Revision as of 17:47, 20 March 2024

About Ubuntu

AAA

Ubuntu version

lsb_release -a
uname -a

Ubuntu installer

updated for Ububtu LTS 20.04.01, 22.04.1

download the latest Ubuntu LTS desktop installer iso image
dd the image to a USB key
power down, disconnect all disks (all HDDs, all SSDs, all M.2)
connect the SSD to be used as system disk
if system will use mirrored SSDs (using ZFS mirror), leave second SSD disconnected, we will activate it later
power up
boot from USB key in legacy mode or UEFI mode (select this in the BIOS boot menu - F8 for ASUS, F11 for Supermicro)
follow the instruction:
"try ubuntu or install ubuntu" - choose "install"
select language - accept default
"updates and other software" - accept default settings ("normal install")
"installation type" - select "advanced features" and "experimental: use ZFS"
accept partition choice
"where are you?" - select "Vancouver" (PST time zone)
"who are you?" - leave all fields blank, except "username" set to "wheel", "password" set to the root password. hostname will be set later after configuring the network
installation runs in a few minutes, when finished, reboot
login as user wheel
answer annouying questions:
"livepatch" - say "next"
"help improve" - select "do not send", say "next"
"privacy" - leave "location" as "off", say "next"
"ready to go", say "done"
right-click on the desktop, say "open in terminal", a shell will open
say "sudo /bin/bash", enter the root password, you now have the root shell
run nm-connection-editor to configure the network. use netmask 255.255.224.0, gateway 142.90.100.18, DNS 142.90.100.19, search path "triumf.ca"
after network is up (can ping ladd00), continue with post-installation steps below

Install instructions

prepare

apt update
apt upgrade

install ssh

apt install ssh

install git/scripts

apt -y install git
mkdir ~root/git
cd ~root/git
git clone https://daq00.triumf.ca/~olchansk/git/scripts.git
cd scripts
git pull

configure hostname

vi /etc/hostname

disable swap

ubuntu installer creates a 2 GB swap partition, not useful on 32-64 GB machine, disable it:

vi /etc/fstab ### comment out the "swap" line

maybe reboot

this is a good point to reboot the machine to boot the latest kernel and to set the correct hostname

install etckeeper

keep contents of /etc in a git repository:

apt -y install etckeeper

set timezone

timedatectl list-timezones | grep -i vancouver
timedatectl set-timezone America/Vancouver

install time synchronization

apt -y install chrony
#echo server time1.triumf.ca iburst >> /etc/chrony/chrony.conf
#echo server time2.triumf.ca iburst >> /etc/chrony/chrony.conf
#echo server time3.triumf.ca iburst >> /etc/chrony/chrony.conf
cd ~/git/scripts
git pull
cd ~
cp ~/git/scripts/etc/triumf.sources /etc/chrony/sources.d/
systemctl disable systemd-timesyncd.service
systemctl stop systemd-timesyncd.service
systemctl disable ntp
systemctl stop ntp
systemctl enable chrony
systemctl restart chrony
chronyc sources
chronyc tracking

NOTE1: if time1, time2, time3 are already listed in /etc/crony/chrony.conf, please remove them and restart chrony.

NOTE2: if time1, time2, time3 are not listed in "chronyc tracking" or if they are not selected by "chronyc tracking", check that /etc/crony/chrony.conf contains "sourcedir /etc/chrony/sources.d". old versions of this file may not have it.

NOTE3: read https://chrony-project.org/faq.html#_should_i_prefer_chrony_over_timesyncd_if_i_do_not_need_to_run_a_server

reenable systemd-timesyncd

ONLY IF CHRONY DOES NOT WORK

To configure systemd-timesyncd, set "NTP=" in /etc/systemd/timesyncd.conf

apt remove chrony
cat /etc/systemd/timesyncd.conf
systemctl enable systemd-timesyncd.service
systemctl restart systemd-timesyncd.service
systemctl status systemd-timesyncd.service
timedatectl status
timedatectl timesync-status

enable outgoing email (debian 11)

this is different from ubuntu 20. it uses /etc/mailname and it hardwires the hostname into main.cf.

enable outgoing email

we have an unusual email configuration. outgoing email should work to deliver error messages, notices, etc. incoming email is disabled, we do not receive email for local users.

this causes problems with TRIUMF smtp server. if our message cannot be delivered (wrong email address or receipient computer is turned off), TRIUMF smtp server will generate a delivery failure notification email and try to send it to the "from" address of the failed message. but the "from" address does not receive any email, so another delivery failure notification email is generated and an attempt to deliver it. which again fails, rinse and repeat.

as solution, kray created a special rule, email from scrap.triumf.ca does not generate delivery failure notices. failed messages sit in the queue for 5 days, then they are deleted. (K.O. - confirmed with kray 3jan2024).

to make this work we use the msmtp MTA package.

cd ~
apt -y remove postfix
apt -y purge postfix # remove old config files
apt -y install mailutils msmtp msmtp-mta # say "no" to apparmor support
apt -y install bsd-mailx
cd ~/git/scripts/etc
git pull
/bin/cp -fv aliases /etc/aliases
/bin/cp -fv msmtprc /etc/msmtprc
/bin/rm -vf ~root/.forward
/bin/rm -vf /etc/mailname
Mail root
Subject: test
test
^D
CC: <CR>

enable outgoing email (postfix)

THIS IS OBSOLETE!!!

TRIUMF: use smtp.triumf.ca
CERN: use cernmx.cern.ch

apt install postfix ### select "satellite system", enter full hostname "xxx.triumf.ca", enter "smtp.triumf.ca"
apt install mailutils
dpkg-reconfigure postfix ### (if postfix already installed)

echo olchansk@triumf.ca lindner@triumf.ca bsmith@triumf.ca >> ~root/.forward
mailx root
test
^D

enable ping for all users (debian 11)

Without this tweak, Debian will report "operation not permitted" if a user tries to ping somewhere.

echo 'net.ipv4.ping_group_range = 0 1000' > /etc/sysctl.d/99-ping.conf

disable apparmor

On NFS-Root network booted machines!

If "man man" returns "permission denied" and syslog reports apparmor "sendmsg DENIED" errors, disable apparmor. This is supposedly fixed in kernel 6.0 and later (to be confirmed), see https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1784499

Disable apparmor, see https://ubuntu.com/server/docs/security-apparmor

This takes effect after a reboot.

systemctl stop apparmor.service
systemctl disable apparmor.service

install missing packages

(apt eats terminal input, even the "yes |" trick does not quite work, repeat the following commands until they report that everything is installed)

yes | apt -y install ssh tcsh ethtool ncat rsync strace net-tools sysstat smartmontools lm-sensors traceroute time minicom screen git lsof debsums tmux iptables
yes | apt -y install lsb-release
yes | apt -y install flex bison
yes | apt -y install neofetch
yes | apt -y install snmp snmp-mibs-downloader
yes | apt -y install git subversion g++ gfortran cmake doxygen
yes | apt -y install curl libcurl4 libcurl4-openssl-dev
yes | apt -y install mariadb-client ### mysql client
yes | apt -y install libz-dev libzstd-dev sqlite3 libsqlite3-dev unixodbc-dev
yes | apt -y install libssl-dev
yes | apt -y install emacs xemacs21 joe
yes | apt -y install gnuplot dos2unix
yes | apt -y install mutt bsd-mailx # email clients
yes | apt -y install liblz4-tool pbzip2
yes | apt -y install libc6-dev-i386 # otherwise no /usr/include/sys/types.h
yes | apt -y install libreadline-dev
yes | apt -y install ubuntu-mate-themes
yes | apt -y install libmotif-dev libxmu-dev
yes | apt -y install libusb-dev libusb-1.0-0-dev
yes | apt -y install i2c-tools libi2c-dev libi2c0
yes | apt -y install xfig gsfonts-x11 gsfonts-other # install fonts for xfig
yes | apt -y install libjson-perl
yes | apt -y install libgsl-dev # additional GNU Scientific Library
yes | apt -y install qt5-default # Qt development
yes | apt -y install python3-full python3-dev python3-dbg python3-pip ### for pyROOT
yes | apt -y install imagemagick imagemagick-common ckeditor # for elog
yes | apt -y install libjpeg-dev libjpeg-progs libjpeg-tools
yes | apt -y install linux-tools-common linux-tools-generic # cpupower frequency-info
yes | apt -y install rdesktop remmina remmina-plugin"*" # requested by POL
yes | apt -y install nlohmann-json3-dev # required to build MIDAS with ROOT 6.30 on Ubuntu-22
yes | apt -y install dpkg-dev cmake g++ gcc binutils libx11-dev libxpm-dev libxft-dev libxext-dev python3 libssl-dev libafterimage0 # from https://root.cern/install/dependencies/
yes | apt -y install apt install gfortran libpcre3-dev xlibmesa-glu-dev libglew-dev libftgl-dev libmysqlclient-dev libfftw3-dev libcfitsio-dev graphviz-dev libavahi-compat-libdnssd-dev libldap2-dev python3-dev python3-numpy libxml2-dev libkrb5-dev libgsl0-dev qtwebengine5-dev nlohmann-json3-dev # from https://root.cern/install/dependencies/

Ubuntu LTS 20.04:

yes | apt -y install linux-image-generic-hwe-20.04 linux-tools-virtual-hwe-20.04 # enable linux 5.11 series kernel

Ubuntu LTS 22.04:

apt -y install linux-generic-hwe-22.04 # enable linux 6.2.0 series kernel

disable swap (debian 11)

on 64 GB RAM machines swap is not useful
on machines booted from network (NFS-ROOT), swap does not work
on machines running from flash (RPi, etc), flash is too slow for useful swap
swap configured by linux installers invariably has wrong size and is not useful

systemctl disable dphys-swapfile
systemctl stop dphys-swapfile
dphys-swapfile uninstall

configure DNS

cd ~/git/scripts
git pull
mkdir /etc/systemd/resolved.conf.d
cp etc/resolved-triumf.conf /etc/systemd/resolved.conf.d/
systemctl restart systemd-resolved
resolvectl
#systemd-analyze cat-config systemd/resolved.conf

install ganglia

apt -y install ganglia-monitor
cd ~root/git/scripts/ganglia
git pull
make install
./ganglia-all.perl

install gonodeinfo

go to https://bitbucket.org/dd1/gonodeinfo follow instructions:

yes | apt-get -y install golang
mkdir ~/git
cd ~/git
#git clone https://bitbucket.org/dd1/gonodeinfo.git
git clone https://daq00.triumf.ca/~olchansk/git/gonodeinfo.git
cd gonodeinfo
git pull
make
make install # install gonodeinfo agent
cd ~ # this is important

edit /etc/gonodeinfo.conf
change "Description", "Location", "User" and "Administrator" as appropriate (or delete them)
change "Servers" to read: Servers: daq00.triumf.ca:8601
run "gonodeinfo -v"
if error is "connection refused". go to the nodeinfo server to add this client to the access control list:
on the gonodeinfo server: run /opt/gonodeinfo/gonodereceive.exe -a daq13
try gonodeinfo again, there should be no error
on the gonodeinfo server: run gonodereport, look at the web pages, the new machine should be listed now

install fonts for EPICS

apt install xfonts-100dpi xfonts-75dpi
restart Xorg (i.e. "killall Xorg", this will log you out from the console)
xlsfonts | grep -i helvetica ### should show fonts with different sizes, not just size 0 (scalable)

install libz.so.1 for CentOS compatibility

KO - confirm which versions on quartus need this.

yes | apt-get -y install zlib1g
yes | apt-get -y install zlib1g:i386 libc6:i386 libgcc1:i386 gcc-6-base:i386

install libpng12.so.0 for Quartus compatibility

(does not work anymore!!!)

wget http://ftp.ca.debian.org/debian/pool/main/libp/libpng/libpng12-0_1.2.50-2+deb8u2_amd64.deb
dpkg --install libpng12-0_1.2.50-2+deb8u2_amd64.deb

install libpng12.so.0 for Quartus 13.0sp1

wget https://daq00.triumf.ca/~olchansk/linux/libpng12.so.0
wget https://daq00.triumf.ca/~olchansk/linux/libpng12.so.0.50.0
/bin/cp -pv libpng12.so.0 libpng12.so.0.50.0 /lib/x86_64-linux-gnu/

install packages for Xilinx

ubuntu LTS 22.04 vivado 2020.1

apt install autoconf libtool
apt install libtinfo5
apt install texinfo
apt install zlib1g:i386

install packages for building ROOT

apt -y install libx11-dev libxpm-dev libxft-dev libxext-dev libpng-dev libjpeg-dev xlibmesa-glu-dev libxml2-dev libgsl-dev cmake

install 32-bit libraries for PHYSICA

these instructions are for running 32-bit physica executable built for SL6 on ubuntu LTS 20.04

install physica sources (cannot build, do not have g77)

cd ~/packages
git clone https://bitbucket.org/ttriumfdaq/physica.git

install 32-bit libraries using ubuntu package manager:

apt install lib32z1 # libz.so

copy 32-bit SL6 shared libraries to /lib32

root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libX11.so.6 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libgd.so.2 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libpng12.so.0 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libreadline.so.6 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libncurses.so.5 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libg2c.so.0 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libxcb.so.1 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libXpm.so.4 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libjpeg.so.62 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libfontconfig.so.1 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libfreetype.so.6 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libtinfo.so.5 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libXau.so.6 /lib32/
root@trinatdaq:~# cp /daq/daqstore/olchansk/daq/physica-SL6/libexpat.so.1 /lib32/

ldd should report:

trinatdaq:trinat> ldd /usr/local/physica/physica.exe
	linux-gate.so.1 (0xf7fa2000)
	libX11.so.6 => /lib32/libX11.so.6 (0xf7e43000)
	libgd.so.2 => /lib32/libgd.so.2 (0xf7dfe000)
	libpng12.so.0 => /lib32/libpng12.so.0 (0xf7dd6000)
	libz.so.1 => /lib32/libz.so.1 (0xf7db8000)
	libreadline.so.6 => /lib32/libreadline.so.6 (0xf7d7e000)
	libncurses.so.5 => /lib32/libncurses.so.5 (0xf7d5b000)
	libg2c.so.0 => /lib32/libg2c.so.0 (0xf7d3d000)
	libm.so.6 => /lib32/libm.so.6 (0xf7c39000)
	libgcc_s.so.1 => /lib32/libgcc_s.so.1 (0xf7c1a000)
	libc.so.6 => /lib32/libc.so.6 (0xf7a2f000)
	libxcb.so.1 => /lib32/libxcb.so.1 (0xf7a05000)
	libdl.so.2 => /lib32/libdl.so.2 (0xf79ff000)
	libXpm.so.4 => /lib32/libXpm.so.4 (0xf79ee000)
	libjpeg.so.62 => /lib32/libjpeg.so.62 (0xf7997000)
	libfontconfig.so.1 => /lib32/libfontconfig.so.1 (0xf7962000)
	libfreetype.so.6 => /lib32/libfreetype.so.6 (0xf78c9000)
	libtinfo.so.5 => /lib32/libtinfo.so.5 (0xf78b0000)
	/lib/ld-linux.so.2 (0xf7fa4000)
	libXau.so.6 => /lib32/libXau.so.6 (0xf78ad000)
	libexpat.so.1 => /lib32/libexpat.so.1 (0xf7885000)
trinatdaq:trinat>

set login environment:

setenv TRIUMF_FONTS $HOME/packages/physica/fonts
setenv PHYSICA_DIR $HOME/packages/physica
alias physica $PHYSICA_DIR/physica-SL6-32

test:

cd ~/packages/physica
physica
@rangauss.pcm

install lightdm

unlike the default gdm login manager, lightdm shows the machine hostname and does not require an extra mouse click to swicth from screen saver to login mode.

apt -y install lightdm
# select lightdm

install desktop environments

note: default display manager and default desktop are deficient, please do not skip this step.

note: if apt asks to choose the display manager, select "lightdm"

note: KO - I recommend the "MATE" desktop.

note: you will have to cut-and-paste this several times because "apt" eats commands, even with "-y" and even piped from "yes".

# install MATE desktop
DEBIAN_FRONTEND=noninteractive apt -y install ubuntu-mate-core ubuntu-mate-desktop ubuntu-mate-themes
# install Cinnamon desktop
DEBIAN_FRONTEND=noninteractive apt -y install cinnamon
# install KDE desktop
DEBIAN_FRONTEND=noninteractive apt -y install kubuntu-desktop
# install Lxqt desktop
DEBIAN_FRONTEND=noninteractive apt -y install lxqt
# install Xfce4 desktop
DEBIAN_FRONTEND=noninteractive apt -y install xfce4

install ROOT

Please install ROOT per instructions at https://root.cern.ch.

NOTE1: The ROOT package available from Ubuntu repositories is severely out of date and cannot be used with MIDAS and ROOTANA. ### DO NOT DO THIS! apt-get install root-system

NOTE2: as of 2017-Jan-09, ROOT binary kits for Ubuntu do not work (use GCC 5 instead of GCC6), build from source instead.

Install x2go

KO - is this still needed? does it cause any security problems?

x2go instructions, thanks to Art O.

add-apt-repository ppa:x2go/stable
apt-get update
apt-get install x2goserver x2goserver-xsession

enable root login from ladd00/daq00

ssh localhost
CTRL-C
/bin/cp ~root/git/scripts/etc/authorized_keys ~root/.ssh/

disable ssh access from outside of TRIUMF

to stop ssh login spam, disable ssh access from outside of TRIUMF. this can be done by requesting a firewall block through the helpdesk or by local firewall rule:

echo iptables -I INPUT ! -s 142.90.0.0/255.255.0.0 -p tcp --dport 22 -j REJECT >> /etc/rc.local
/etc/rc.local

install smart-status

ln -s ~/git/scripts/smart-status/smart-status.perl ~root/

enable boot menu and boot messages

This will enable the grub menu (with a 10 sec timeout) and replace black screen with exciting linux boot messages.

emacs -nw /etc/default/grub

GRUB_DEFAULT=0
#GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
#GRUB_CMDLINE_LINUX_DEFAULT="vga=769 video=640x480"
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX=""
#GRUB_GFXMODE=640x480

update grub config:

grub-mkconfig -o /boot/grub/grub.cfg

reboot

this completes installation of the base system.

following sections modify basic ubuntu to fix known problems and to enable special stuff.

Enable automatic updates

apt install unattended-upgrades
cd ~/git/scripts
git pull
/bin/cp -v etc/99apt-conf-ko /etc/apt/apt.conf.d/
apt-config dump | grep Unattended

Following is obsolete:

emacs -nw /etc/apt/apt.conf.d/50unattended-upgrades
- uncomment in Allowed-Origins "-security" and "-updates"
- add in Allowed-Origins: "Google LLC:stable";
- uncomment/add: "Unattended-Upgrade::Mail "root";
emacs -nw /etc/apt/apt.conf.d/10periodic

APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Download-Upgradeable-Packages "1";
APT::Periodic::AutocleanInterval "7";
APT::Periodic::Unattended-Upgrade "1";

test: unattended-upgrade --dry-run -v

NOTE: update-on-shutdown is disabled.

NOTE: there is no update-on-boot, but:

NOTE: if machine was off for a long time, the systemd update timer would have expired and it will fire soon after reboot, causing an automatic update run. this is unwanted, and there is no fix or workaround for it. K.O. June-2023.

Fix bpool is full (obsolete)

THIS IS CAUSED BY OBSOLETE PACKAGE zsys. PLEASE: apt remove zsys

!!! only if ROOT on ZFS !!!

There is an error in the zsys package that causes bpool to run out of space, see #Ubuntu zsys for more details.

To fix:

cd ~/git/scripts
git pull
cp etc/zsys.conf /etc/
zsysctl service reload
zsysctl service gc
zpool list bpool
zfs list bpool
df /boot

IPMI instructions

IPMI is the board management hardware on Supermicro and other server motherboards. This includes hardware sensors - fan rotation speed, temperatures and power supply voltages.

apt-get install ipmitool
systemctl enable ipmievd
systemctl restart ipmievd

Run:

ipmitool sel list ### event list
ipmitool sel elist ### event list
ipmitool sel clear ### clear event list (if it becomes full)
ipmitool sensor ### report hardware sensors

move /home/wheel

note: this MUST be done if ZFS root and NIS/autofs with /home.

Default location of wheel's home directory will collide with autofs /home, it has to be moved, for example to /wheel.

# logout from the wheel user
# go to another computer
ssh root@daqubuntuxxx
zfs list | grep wheel ### identify zfs name wheel_xxxxxx
zfs set mountpoint=/wheel rpool/USERDATA/wheel_hm8fzh
emacs -nw /etc/passwd ### change wheel's home directory from /home/wheel to /wheel
su - wheel ### check that user wheel still works

This will break wheel's ability to run snap programs, such as firefox, install chrome as listed below.

enable NIS (ubuntu 22.04, debian 11)

apt -y install rpcbind nis
echo DAQ-NIS >> /etc/defaultdomain
echo ypserver daq00.triumf.ca >> /etc/yp.conf
systemctl enable ypbind.service
systemctl restart ypbind.service
systemctl status ypbind.service
ypwhich -m

enable ypserv:

sed -i s/NISSERVER=false/NISSERVER=slave/ /etc/default/nis
/usr/lib/yp/ypinit -s daq00
echo ypserver localhost >> /etc/yp.conf
sed -i "s/ypserver .*/ypserver localhost/" /etc/yp.conf
systemctl enable ypserv
systemctl restart ypserv
systemctl restart ypbind

edit /etc/nsswitch.conf to read:

# begin get data from nis
passwd: files nis
group: files nis
shadow: files nis
automount:  files nis
netgroup: files nis
# end get data from nis

enable hourly update of nis maps:

mkdir ~root/git
cd ~root/git
git clone http://daq00.triumf.ca/~olchansk/git/scripts.git
cd ~/git/scripts/etc
git pull
ln -s $PWD/ypxfr-cron-hourly /etc/cron.hourly

If this is a new machine, then on the master NIS node (daq00), add this new node to /etc/netgroup, and update NIS maps (cd /var/yp; make)

enable NIS (ubuntu 20.04)

apt-get -y install portmap nis ### will ask for NIS domain (DAQ-NIS)
dpkg-reconfigure nis ### reconfigure if already installed
ypwhich -m
edit /etc/default/nis
- set "NISSERVER=slave"
- Ubuntu LTS 20.04, check that "YPBINDARGS=" is blank, remove "-no-dbus" if it is there
#edit /etc/yp.conf, comment-out everything, add "domain DAQ-NIS server localhost"
edit /etc/yp.conf, comment-out everything, add "ypserver localhost"
/usr/lib/yp/ypinit -s daq00
systemctl enable nis
systemctl restart nis
ypwhich
ypwhich -m
ypcat -k passwd
vi /etc/nsswitch.conf ### add the automount line, modify the passwd, group and shadow lines to read this:

# begin get data from nis
passwd: files nis
group: files nis
shadow: files nis
automount:  files nis
netgroup: files nis
# end get data from nis

enable hourly update of NIS maps

mkdir ~root/git
cd ~root/git
git clone https://daq00.triumf.ca/~olchansk/git/scripts.git
cd ~/git/scripts/etc
git pull
ln -s $PWD/ypxfr-cron-hourly /etc/cron.hourly

### NOT NEEDED sudo vi /etc/idmapd.conf ### add line: "Domain = triumf.ca"

enable autofs

apt -y install autofs
systemctl enable autofs
systemctl restart autofs
ls -l /home/olchansk ### test autofs, check file owner is correct

enable NFS server

apt install nfs-kernel-server
#edit /etc/exports
systemctl enable nfs-server
systemctl restart nfs-server

NIS master

notes for setting up the NIS master

wheel user

"wheel" is the default administrative user. We do not want it's password exported to NIS (encrypted password hash is world visible) and we do not want it's home directory exported to NFS (~wheel/.ssh is world visible and potentially writable: anybody can change ~wheel/.ssh/authorized_keys).

move wheel's home directory from /home/wheel to /wheel (see special section about this)
change wheel's UID and GID from 1000 to a value below MINUID in /var/yp/Makefile

coherent uids

we do not want system accounts defined in /etc/passwd of the NIS master to be included in the NIS map "passwd". this causes trouble on NIS clients where newly installed packages fail to create local system users because same user already exists in NIS.

This is controlled by MINUID in /var/yp/Makefile.

Historical TRIUMF uids start from around 200, but several clusters do not have any historic TRIUMF uids below 500 and MINUID is set to:

DAQ-NIS: MINUID=200
ISAC-NIS: MINUID=500
TITAN-NIS: MINUID=500
MUSR-NIS: MINUID=500
TIG-NIS: MINUID=500 (100 on SL6 mother8pi)

Ubuntu 20 has two programs to create users:

adduser - creates new users with UID 1000 and up as specified in /etc/adduser.conf. No problems here.
adduser --system - creates new system users with UID 100 and up as specified in /etc/adduser.conf. No problems here.
useradd - creates new users with UID 1000 and up as specified in /etc/login.defs. No problems here.
useradd --system - creates new system users with UID 999 and down (read "man useradd", section at the end about SYS_UID_MAX). This collides with NIS MINUID, these system users will be included in the NIS map and cause trouble.

This problem cannot be fixed, SYS_UID_MIN, SYS_UID_MAX and UID_MIN in /etc/login.defs do not seem to have any effect on UIDs chosen by "useradd --system". (tested on Ubuntu LTS 20.04).

So far only these system accounts seem to be affected by this:

systemd-coredump
ganglia

To fix:

run "sort -r -n -t: -k3 /etc/passwd" to identify the last unused system user uid (range 100..200)
run "sort -r -n -t: -k3 /etc/group" to identify the last unused system user gid (range 100.200)
systemd-coredump: manually change UID and GID (package systemd-coredump is usually not installed)
ganglia: same thing, then change ownership on all ganglia files.

Also read systemd author's opinion on system vs user UIDs: https://github.com/systemd/systemd/issues/4850#issuecomment-265698275

Fix systemd-logind NIS breakage

!!! THIS IS NOT NEEDED FOR UBUNTU LTS 20.04 !!!

there is a delay in ssh logins for normal users. "ssh -v" shows the delay is after "pledge...". this fix removes the delay.

systemd developers think that we should not use NIS and made sure there are problems if we do. To give them credit, they do offer a workaround. Read this: https://github.com/poettering/systemd/commit/695fe4078f0df6564a1be1c4a6a9e8a640d23b67

mkdir /etc/systemd/system/systemd-logind.service.d
echo -e "[Service]\nIPAddressDeny=\n" > /etc/systemd/system/systemd-logind.service.d/local.conf
systemctl daemon-reload
systemctl cat systemd-logind.service

Fix systemd-udevd NIS breakage

see same problem as above with udev getting stuck. ubuntu lts 20.04.

mkdir /etc/systemd/system/systemd-udevd.service.d
echo -e "[Service]\nIPAddressDeny=\n" > /etc/systemd/system/systemd-udevd.service.d/local.conf
systemctl daemon-reload
systemctl cat systemd-udevd.service

Configure USB device permissions

Configure USB device permissions for user access to USB-serial devices, Altera USB Blaster, etc.

create file /etc/udev/rules.d/99-usb-chmod.rules with this contents:

emacs -nw /etc/udev/rules.d/99-usb-chmod.rules
ACTION=="add", SUBSYSTEM=="usbmisc", RUN+="/bin/chmod a+wr $env{DEVNAME}" 
ACTION=="add", SUBSYSTEM=="usb_device", RUN+="/bin/chmod a+wr /dev/%c"
ACTION=="add", SUBSYSTEM=="usb_device", RUN+="/bin/chmod a+wr /proc/%c"
ACTION=="add", ENV{DEVTYPE}=="usb_device", RUN+="/bin/chmod a+wr $env{DEVNAME}"
ACTION=="add", ENV{DEVTYPE}=="usb_device", RUN+="/bin/chmod a+wr $env{DEVICE}"
ACTION=="add", ENV{PHYSDEVBUS}=="usb-serial", RUN+="/bin/chmod a+wr $env{DEVNAME}"
ACTION=="add", ENV{DEVPATH}=="/class/tty/ttyS*", RUN+="/bin/chmod a+wr $env{DEVNAME}"
ACTION=="add", SUBSYSTEM=="tty", DEVPATH=="*ttyUSB*", RUN+="/bin/chmod a+rw $env{DEVNAME}"
ACTION=="add", SUBSYSTEM=="tty", DEVPATH=="*ttyACM*", RUN+="/bin/chmod a+rw $env{DEVNAME}"
ACTION=="add", SUBSYSTEM=="tty", DEVPATH=="*ttyS*", RUN+="/bin/chmod a+rw $env{DEVNAME}"
ACTION=="add", DEVPATH=="*video*", RUN+="/bin/chmod a+rw $env{DEVNAME}"

reload udev rules: udevadm control --reload-rules
apply new permissions: udevadm trigger --action=add
watch udev activity: udevadm monitor -p

Configure lightdm display manager

enable it

echo lightdm | dpkg-reconfigure -fteletype lightdm
systemctl disable gdm
systemctl disable sddm
systemctl enable lightdm

make the MATE desktop as default

cd ~root/git/scripts/
git pull
/bin/cp -v etc/lightdm_default_mate.conf /etc/lightdm/lightdm.conf.d/

enable login by NIS users

/bin/cp -v etc/lightdm_enable_nis_login.conf /etc/lightdm/lightdm.conf.d/

restart lightdm

systemctl stop gdm
systemctl restart lightdm

Install libpng12.so.0

Quartus 16 needs libpng12:

wget http://mirrors.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1_amd64.deb
dpkg --install libpng12-0_1.2.54-1ubuntu1_amd64.deb

Install google-chrome

wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
dpkg -i google-chrome-stable_current_amd64.deb

confirm autoupdate is enabled, observe dl.google.com is present in the list of repositories:

apt update
...
Get:5 https://dl.google.com/linux/chrome/deb stable/main amd64 Packages [1,094 B]
...

FOLLOWING IS OBSOLETE:

Instructions from here: https://www.ubuntuupdates.org/ppa/google_chrome?dist=stable

wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-tmp.list'
apt update
apt install google-chrome-stable
/bin/rm -f /etc/apt/sources.list.d/google-tmp.list

Install amanda client

ONLY ONE MACHINES THAT HOST HOME DIRECTORIES

apt install amanda-client
edit /etc/amandahosts

amanda.triumf.ca amanda amdump

check permissions on /etc/amandahosts:

root@daq00:/var/log/amanda# ls -l /etc/amandahosts
-rw------- 1 backup backup 49 Jan 27 10:48 /etc/amandahosts

fix if needed: chown backup.backup /etc/amandahosts; chmod a= /etc/amandahosts; chmod u=wr /etc/amandahosts
edit /etc/amanda-security.conf, add this line:

runtar:gnutar_path=/usr/bin/tar

On the amanda machine:

in amanda disklist, use dump type "bsdtcp-comp-user-tar"
su - amanda and run amcheck -c daily daq00

-bash-4.1$ amcheck -c daily daq00

Amanda Backup Client Hosts Check
--------------------------------
Client check: 1 host checked in 0.092 seconds.  0 problems found.

(brought to you by Amanda 3.3.7p1.git.685ff76d)

Enable rc.local

For reasons unknown, Ubuntu LTS 20.04 does not enable /etc/rc.local. Do this:

cd ~/git/scripts
git pull
cp -n -v etc/rc.local /etc/
chmod a+rx /etc/rc.local
cp etc/rc-local.service /etc/systemd/system/
systemctl daemon-reload
systemctl enable rc-local
systemctl start rc-local
systemctl status rc-local

Remove unwanted packages

apt remove zsys # broken, do not use
apt remove sddm # login manager
apt remove avahi-daemon avahi-autoipd # not sure what it does, observed using 100% CPU
apt remove modemmanager # probes all serial ports to see if it's a modem

Disable unwanted services

systemctl disable mpd
systemctl disable snapd
systemctl disable ModemManager
systemctl --global mask tracker-extract-3.service
systemctl --global mask tracker-miner-fs-3.service
systemctl daemon-reload

Disable sleep and suspend

note: we see some computers randomly shutdown or go to sleep, log files indicates the "sleep" or "suspend" button was pushed by user, but no such buttons actually exist. this is the fix for this:

systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target systemd-suspend.service systemd-hybrid-sleep.service

Enable crontab @reboot for MIDAS

startup scripts have a bug - cron @reboot entries for normal users can run before autofs is ready, so if the home directory is on autofs/NFS, it cannot be accessed and the cron job fails. If MIDAS is supposed to be started by cron @reboot, it will not start (there *will* be an error message in /var/log/cron).

mkdir /etc/systemd/system/cron.service.d
echo -e "[Unit]\nAfter=ypbind.service autofs.service\n" > /etc/systemd/system/cron.service.d/local.conf
systemctl daemon-reload
systemctl cat cron.service

Explore the systemd dependency tree using "systemctl list-dependencies" maybe with "--all".

Visualize the exact boot sequence from previous boot: "systemd-analyze plot > xxx.svg", look at the svg file using a web browser.

Crontab entry to start midas: (install in the midas user crontab, not root crontab)

su - midasuser
crontab -l
#@reboot /bin/bash -l -c "/home/trinat/bin/start-daq-applications"
#@reboot /bin/tcsh -c "/home/trinat/bin/start-daq-applications"

Install apache httpd proxy for midas and elog

This will configure the HTTPS/SSL certificate using "certbot" and "letsencrypt" and configure an HTTPS web server using apache2.

First, configure apache2:

execute these commands:

apt -y install apache2
cd /etc/apache2

create new file conf-available/ssl-daq14.conf # use actual hostname instead of daq14

SSLSessionCache         shmcb:/run/httpd/sslcache(512000)
SSLSessionCacheTimeout  300
SSLRandomSeed startup file:/dev/urandom  256
SSLRandomSeed connect builtin
SSLCryptoDevice builtin

create new file sites-available/daq14-ssl.conf # use actual hostname instead of daq14

<IfModule mod_ssl.c>
    <VirtualHost *:443>
        ServerName daq14.triumf.ca
        DocumentRoot /var/www/html
        ErrorLog /var/log/apache2/daq14.log
        SSLEngine on
        # note SSLProtocol, SSLCipherSuite and some other settings are overwritten by /etc/letsencrypt/options-ssl-apache.conf
        SSLProtocol all -SSLv2 -SSLv3 -TLSv1 -TLSv1.1
        SSLCipherSuite HIGH:MEDIUM:!aNULL:!MD5:!SEED:!IDEA:!RC4
        ## use port specified in elogd.cfg
        #ProxyPass /elog/ http://localhost:8082/ retry=1 
        ## use mhttpd port
        #ProxyPass /      http://localhost:8080/ retry=1 
        Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains"
        <Location />
            SSLRequireSSL
            AuthType Basic
            AuthName "DAQ password protected site"
            Require valid-user
            # create password file: touch /etc/apache2/htpasswd
            # to add new user or change password: htpasswd /etc/apache2/htpasswd username
            AuthUserFile /etc/apache2/htpasswd
        </Location>
    </VirtualHost>
</IfModule>

stop apache2 from listening on port 80: edit /etc/apache2/ports.conf, comment-out the line "Listen 80"
stop apache2 from listening on port 80: edit /etc/apache2/ports.conf, comment-out the line "Listen 80"
enable ssl module
enable new configurations

a2enmod ssl
a2enmod headers
a2enmod proxy
a2enmod proxy_http
a2enconf ssl-daq14
a2ensite daq14-ssl

disable default ssl sites

a2dissite 000-default-le-ssl
a2dissite 000-default
ls -l /etc/apache2/sites-enabled/ ### should show only daq14-ssl.conf

check that there are no syntax problems

apache2ctl configtest

enable and start apache2:

systemctl enable apache2
systemctl restart apache2
systemctl status apache2

apache2 may fail to start, look in /var/log/apache2/error.log and /var/log/apache2/daq14.log
if it says "Failed to configure ... certificate", proceed to the step for setting certbot.
try to access https://daq14.triumf.ca
- you should see a complaint about self-signed certificate
- you should see a request for password (do not login yet)
- if you get "connection refused", HTTPS port 443 may need to be enabled in the local firewall, look at documentation for ufw.

Second, configure certbot:

(Note: as of 2018-01-18 certbot requires use of http port 80 to get the initial https certificate, renewal can continue to use the https port 443)

(Note: as of 2019-01-?? certbot requires use of port 80 for renewals)

(Note: unsurprisingly, this requires outside access to connect with letsencrypt, so won't work if PC is only accessible from on-site network)

check that port 80 is not used by anything:
netstat -an | grep LISTEN | grep ^tcp | grep 80
lsof -P | grep -i tcp | grep LISTEN | grep 80
if lsof reports that apache2 is listening on port 80, follow the apache2 instructions above (remove "listen 80" from apache2.conf

install certbot (if necessary open tcp port 80 in the firewall, see documentation for ufw):

apt install certbot python3-certbot-apache
certbot certonly --standalone --installer apache

then answer questions:
"activate HTTPS for daq14.triumf.ca" - say ok
"enter email address" - enter your own email address
"please read terms..." - read the terms and say "agree"
it will take a few moments...
"congratulations..." - say ok.

certbot install --apache --cert-name daq14.triumf.ca

then answer questions:
"choose redirect..." - say "1" (no redirect)
look inside /etc/apache2/sites-enabled/daq14-ssl.conf to see that SSLCertificateFile & co point to certbot certificates in

/etc/letsencrypt/live/daq14.triumf.ca/

to check current renewal and to update the certbot config file in /etc/letsencrypt/renewal, run this:

certbot renew --standalone --installer apache --force-renewal

NOTE: this certificate will expire in 3 months, automatic renewal should work with current version of certbot

Third, activate password protection:

as shown in the config file above, create password file and initial user: (replace "midas" with specific username)

touch /etc/apache2/htpasswd
htpasswd /etc/apache2/htpasswd midas

restart apache2

systemctl restart apache2
systemctl status apache2

From here:

enable proxy for MIDAS mhttpd - uncomment redirect in the config file above
enable proxy for ELOG - ditto

a2enmod proxy
a2enmod proxy_http
apache2ctl configtest
systemctl restart apache2

try accessing MIDAS https://daq14.triumf.ca/ (make sure mhttpd is running)
if it's not working, check odb setting FIXME!
try accessing ELog https://daq14.triumf.ca/elog/ (make sure elogd is running)
if it's not working, check elogd.cfg file and make sure

SSL                  = 0

NOTE: if certbot fails with errors about 'module' object has no attribute 'pyopenssl', try this: pip install requests==2.6.0

Enable elog PDF preview

see https://stackoverflow.com/questions/52998331/imagemagick-security-policy-pdf-blocking-conversion

xemacs -nw /etc/ImageMagick-6/policy.xml
remove this section at the end:

<!-- disable ghostscript format types -->
<policy domain="coder" rights="none" pattern="PS" />
<policy domain="coder" rights="none" pattern="PS2" />
<policy domain="coder" rights="none" pattern="PS3" />
<policy domain="coder" rights="none" pattern="EPS" />
<policy domain="coder" rights="none" pattern="PDF" />
<policy domain="coder" rights="none" pattern="XPS" />

Install Jupyter notebook

From https://jupyter.org/install
apt install python3-pip
pip install jupyterlab
pip install notebook
~/.local/bin/jupyter notebook
watch the http://localhost:8888 URL that it printed
say "no" to offer to start firefox (it will not work!)
URL is: http://localhost:8888/tree?token=xxx
from the machine where you are running the web browser (i.e. google-chrome), run (replace trinat@trinatdaq with the username and machine name where you started jupyter)
open a new shell and run: ssh -v trinat@trinatdaq -L 8888:localhost:8888
in the web browser, open http://localhost:8888
this gives us the login page
in the password or token entry field, put the token from the "tree?token=xxx" above (printed by jupyter on startup)
push button "login"
jupyter page should open with the list of files in the trinat home directory
congratulate Brian with full success

Install ZFS quota report

If there are any ZFS volumes, install script to report disk and quota usage

cd ~/git/scripts/quotareport
git pull
mkdir /var/www/html/zfsquotareport
cp -pv ~/git/scripts/quotareport/sorttable.js /var/www/html/zfsquotareport/
ln -s $PWD/zfsquotareport.perl /etc/cron.daily/
touch /etc/crontab

If httpd is configured to redirect "/" to MIDAS mhttpd:

add following to /etc/apache2/sites-enabled/xxx-ssl.conf in front of "ProxyPass / ..."
run "systemctl reload apache2"

## do not proxy zfs quota report directory 
ProxyPass /zfsquotareport/ !

Install PHP

apt install php libapache2-mod-php
systemctl restart apache2
create /var/www/html/info.php

<?php 
 
phpinfo();

open https://daq00.triumf.ca/info.php

Configure TRIUMF printers

systemctl stop cups
systemctl disable cups
echo "ServerName printers.triumf.ca" > /etc/cups/client.conf
lpstat -a

Enable core dumps

By default, Ubuntu LTS 20.04 installs the apport package which disabled core dumps from user applications. (google it up!). It is not meant to do this and documentation claims that it is not installed and not enabled by default. Oh, well...

apt remove apport
apt autoremove ### will remove apport-symptoms and a few other packages

After this, core dumps are written to file "core" in the current directory. See /proc/sys/kernel/core_pattern and /proc/sys/kernel/core_uses_pid.

Enable core dump file names to include process id, add following to /etc/rc.local

echo 1 > /proc/sys/kernel/core_uses_pid

Enable debugger

By default, Ubuntu LTS 20.04 does not permit debugger to attach and debug already running programs. To enable it, add following to /etc/rc.local

echo 0 > /proc/sys/kernel/yama/ptrace_scope

Disable Ubuntu Pro nag

If "apt upgrade" requests Ubuntu Pro or esm-apps, disable the nag:

/bin/rm /etc/apt/apt.conf.d/20apt-esm-hook.conf

Update packages

apt-get update # update package list
apt-get dist-upgrade # install updated packages and update "kept back" packages
apt-get autoremove # remove packages that apt thinks should be removed

Finish installation

Congratulations. There is nothing more to do!

reboot

shutdown -r now

Install ZFS

!!! after installing all the packages, after updating the system, after updating the linux kernel, after rebooting into latest kernel !!!

apt-get install zfsutils-linux

Follow generic ZFS instructions: ZFS

Update to new version of Ubuntu

vi /etc/update-manager/release-upgrades # set "Prompt=normal"
do-release-upgrade

Update Ubuntu LTS 20.04 to LTS 22.04:

apt remove zsys

daqubuntu

# reboot to clear out all updates
# vi /etc/update-manager/release-upgrades # set "Prompt=normal"
# do-release-upgrade -c
Checking for a new Ubuntu release
New release '22.04 LTS' available.
Run 'do-release-upgrade' to upgrade to it.
# do-release-upgrade
...
say yes...
...
login.defs, say "Y" (erase local changes, use packaged version)
/etc/systemd/resolved.conf, say "Y" (same as above)
firefox snap, say yes
unable to reach snap store, say "skip"
/etc/gmond.conf, say "Y"
/var/yp/Makefile, say "install the package maintainer's version"
/etc/ypserv.conf, same thing
/etc/ypserv.securenets, same thing
/etc/default/nis, same thing
/etc/speech-dispatcher/modules/mary-generic.conf, same thing
/etc/apt/apt.conf.d/50unattended-upgrades, same thing
...
278 packages are going to be removed, say yes
...
restart required, say yes
...
no ping... yes ping...
...
ssh daqubuntu, ok
apt update, fail, DNS does not work, "host security.ubuntu.com" does not resolve.
fix resolver per https://daq00.triumf.ca/DaqWiki/index.php/Ubuntu#Disable_NetworkManager
apt update, apt upgrade now works, 0 packages to update
NIS does not work.

midm9a

login.defs
firefox snap
gmond.conf
ypserv
/etc/default/nis
unattended-upgrades
amanda-security.conf
remove obsolete (no)
reboot
configure dns
reenable nis

daq17

firefox snap
imagemagick policy.xml
gmond.conf
chrony.conf
/var/yp/Makefile
ypserv.conf
ypserv.securenets
/etc/default/nis
50unattended-upgrades

daq00

per https://serverpilot.io/docs/how-to-upgrade-ubuntu-20.04-to-22.04/

do-release-upgrade -f DistUpgradeViewNonInteractive

if it exists "too soon" without doing anything, run it without "-f xxx", most likely it does not like something about this machine. in case of daq00 it did not like how the EFI partitions were mounted. after fixing it, non-interactive upgrade was successful.

isdaq08

prepare

cd ~/git/scripts
git pull
cd ~
apt -y install debsums

check for modified config files that make upgrade unhappy, deal with all files reported by debsums.

root@isdaq08:~# debsums -ce
/etc/ganglia/gmond.conf
/etc/yp.conf
/etc/apt/apt.conf.d/10periodic
root@isdaq08:~#

restore original /etc/apt/apt.conf.d/10periodic

APT::Periodic::Update-Package-Lists "1"; 
APT::Periodic::Download-Upgradeable-Packages "0"; 
APT::Periodic::AutocleanInterval "0";

apt remove ganglia-monitor
apt remove nis
"debsums -ce" is now empty

Run the upgrade:

do-release-upgrade -f DistUpgradeViewNonInteractive

Post upgrade:

configure DNS
apt -y install linux-generic-hwe-22.04
/bin/cp -v ~/git/scripts/etc/99apt-conf-ko /etc/apt/apt.conf.d/ # restore nightly updates
/bin/rm /etc/apt/apt.conf.d/20apt-esm-hook.conf # remove the ubuntu-pro nag
install missing packages
restore ganglia
restore nis
check zpool status, may need zpool upgrade
reboot

Upgrade to new version of Debian

https://www.debian.org/releases/bookworm/amd64/release-notes/ch-upgrading.en.html

32-bit VME processor Debian 11 to 12

cd git/scripts; git pull; cd ~
apt update
apt upgrade
edit /etc/apt/sources.list

deb http://deb.debian.org/debian/ bookworm main
#deb http://deb.debian.org/debian/ bullseye main
#deb-src http://deb.debian.org/debian/ bullseye main

apt update
apt upgrade --without-new-pkgs
apt full-upgrade
apt list '~c'; apt purge '~c' # purge left-over config files [residual-config]
reboot

Ubuntu package manager

apt-get install xxx # install package xxx
apt-get update
apt-get upgrade
apt-get dist-upgrade
apt-get autoremove # remove automatically installed packages required by a removed package
apt-get remove xxx # remove package xxx
apt-cache search . # list all available packages
apt-cache show "." | grep ^Package # list al available packages
apt-cache madison root-system # show all available versions of package root-system
apt list # list all installed packages
dpkg --listfiles libpng16-16 # list all files from this package
apt list --installed # list all installed packages
dpkg -S /bin/bash # what package provides this file?
dpkg -L bash # what files provided by this package?
debsums -ce # show modified config files
apt-config dump # show apt configuration

Ubuntu zsys

NOTE: DO NOT USE ZSYS, see https://github.com/ubuntu/zsys/issues/218 and https://github.com/ubuntu/zsys/issues/230

manual removal of old snapshots

zsysctl show
zsysctl state remove xy69ye -s
zsysctl state remove xy69ye
zsysctl state remove xy69ye -u wheel

apt remove zsys

NOTE: old zsys snapshots must be cleaned manually, "zsysctl state remove xxx --system" is broken and does not remove user data snapshots

manages system snapshots
documentation: https://github.com/ubuntu/zsys
documentation: (go to next article via link "newer" at the bottom) https://didrocks.fr/2020/05/21/zfs-focus-on-ubuntu-20.04-lts-whats-new/
ubuntu 20.04 bug, too many snapshots cause /boot to become full and updates fail. https://github.com/ubuntu/zsys/issues/155
solution: use custom /etc/zsys.conf, limit number of snapshots to 10, see trinatdaq:/etc/zsys.conf
zsys commands:

update-grub # list of all snapshots, errors if some snapshots are broken
zsysctl state remove lnc0k7 --system # remove snapshot
xemacs -nw /etc/zsys.conf; zsysctl service reload; zsysctl service gc # cause gc to run with new settings in zsys.conf
zfs list -r -t snapshot -o name,used,referenced,creation bpool/BOOT # list snapshots
zsysctl show # show snapshots

Ubuntu cloning

to clone a ubuntu image:

cd /nfsroot/lxcpet
emacs -nw etc/hostname ### change hostname
emacs -nw etc/mailname ### change hostname (debian 11)
emacs -nw etc/defaultdomain ### change the NIS domainname
emacs -nw etc/yp.conf ### change the NIS server
cp -pvf ../lxcpet-SL610/etc/ssh/*key* etc/ssh/ ### preserve the ssh keys
emacs -nw opt/gonodeinfo/gonodeinfo.conf ### update information
emacs -nw root/.ssh/authorized_keys ### update root ssh keys

Ubuntu boot loader

boot from ZFS

use UEFI boot with syslinux, see here: https://daq.triumf.ca/DaqWiki/index.php/SLinstall#Configure_UEFI_boot
apt install zfs-initramfs
update-initramfs -v -u
ZFS structure:

root@daq00:~# zfs list
NAME                                               USED  AVAIL     REFER  MOUNTPOINT
rpool                                              147G  1.62T       96K  /
rpool/ROOT                                        17.8G  1.62T       96K  none
rpool/ROOT/ubuntu_00aaaa                          17.8G  1.62T     6.22G  /

copy OS image to rpool/ROOT/ubuntu_00aaaa
zfs set mountpoint=/ rpool
zfs set mountpoint=none rpool/ROOT
zfs set mountpoint=/ rpool/ROOT/ubuntu_00aaaa
zfs get all | grep mountpoint

rpool                     mountpoint            /                      local
rpool/ROOT                mountpoint            none                   local
rpool/ROOT/ubuntu_00aaaa  mountpoint            /                      local

in linux kernel command line (syslinux.cfg), set "root=" to "root=ZFS=rpool/ROOT/ubuntu_00aaaa"

boot from ZFS mirror

setup the EFI partitions

assuming /dev/sdb is already setup for EFI boot, setup /dev/sda the same way:
partition the second boot disk same as first boot disk:

root@grsnis01:~# gdisk -l /dev/sdb
Found valid GPT with protective MBR; using GPT.
Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048         1050623   512.0 MiB   EF00  EFI system partition
   2         1050624      3907029134   1.8 TiB     8300  Linux filesystem
root@grsnis01:~#

mkfs.msdos /dev/sdX1
create mount points

mkdir /boot/efi-sda
mkdir /boot/efi-sdb

add to /etc/fstab

/dev/sda1 /boot/efi-sda       vfat    umask=0022,fmask=0022,dmask=0022,nofail      0       1 
/dev/sdb1 /boot/efi-sdb       vfat    umask=0022,fmask=0022,dmask=0022,nofail      0       1

mount -a
df | grep boot

root@grsnis01:~# df | grep boot
/dev/sdb1                    523248    98100     425148  19% /boot/efi-sdb
/dev/sda1                    523248        4     523244   1% /boot/efi-sda

copy boot files to new boot disk
cd /boot/efi-sdX; rsync -av . /boot/efi-sdY
set BIOS to boot from "UEFI Hard drive", disable legacy boot (except for booting from USB key in legacy mode)
if using UEFI boot syslinux per these instructions, linux kernel update has to be done manually:
run ~/git/scripts/etc/update_efi_mirror.perl, follow instructions that it prints.

setup zfs partitions

use partitions compatible with Ubuntu "install on ZFS"

gdisk "o" to create new GPT partition table
gdisk "n" +512M ef00 to create EFI partition
gdisk "n" +2G 8200 to create linux swap partition (not used)
gdisk "n" +2G BE00 to create ZFS bpool partition
gdisk "n" xxx BF00 create ZFS rpool partition

# gdisk -l /dev/sda
Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048         1050623   512.0 MiB   EF00  EFI System Partition
   2         1050624         5244927   2.0 GiB     8200  
   3         5244928         9439231   2.0 GiB     BE00  
   4         9439232       234441614   107.3 GiB   BF00  
root@midm9a:~#

setup zfs mirror

see here: https://daq.triumf.ca/DaqWiki/index.php/ZFS#Convert_pool_from_single_to_mirror

root@grsnis01:~# ls -l /dev/disk/by-id/ata*part2
lrwxrwxrwx 1 root root 10 Feb 19 16:47 /dev/disk/by-id/ata-WDC_WDS200T2B0A-00SM50_205007801081-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 Feb 19 16:47 /dev/disk/by-id/ata-WDC_WDS200T2B0A-00SM50_205007801101-part2 -> ../../sdb2

root@grsnis01:~# zpool status
  pool: rpool
 state: ONLINE
  scan: none requested
config:

        NAME                                             STATE     READ WRITE CKSUM
        rpool                                            ONLINE       0     0     0
          ata-WDC_WDS200T2B0A-00SM50_205007801101-part2  ONLINE       0     0     0

errors: No known data errors

root@grsnis01:~# zpool attach rpool ata-WDC_WDS200T2B0A-00SM50_205007801101-part2 /dev/disk/by-id/ata-WDC_WDS200T2B0A-00SM50_205007801081-part2

root@grsnis01:~# zpool status
  pool: rpool
 state: ONLINE
status: One or more devices is currently being resilvered.  The pool will
        continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
  scan: resilver in progress since Fri Feb 19 16:54:39 2021
        12.6G scanned at 3.16G/s, 1.02G issued at 262M/s, 12.6G total
        1.02G resilvered, 8.09% done, 0 days 00:00:45 to go
config:

        NAME                                               STATE     READ WRITE CKSUM
        rpool                                              ONLINE       0     0     0
          mirror-0                                         ONLINE       0     0     0
            ata-WDC_WDS200T2B0A-00SM50_205007801101-part2  ONLINE       0     0     0
            ata-WDC_WDS200T2B0A-00SM50_205007801081-part2  ONLINE       0     0     0  (resilvering)

errors: No known data errors

wait

root@grsnis01:~# zpool status
  pool: rpool
 state: ONLINE
  scan: resilvered 12.7G in 0 days 00:00:40 with 0 errors on Fri Feb 19 16:55:19 2021
config:

        NAME                                               STATE     READ WRITE CKSUM
        rpool                                              ONLINE       0     0     0
          mirror-0                                         ONLINE       0     0     0
            ata-WDC_WDS200T2B0A-00SM50_205007801101-part2  ONLINE       0     0     0
            ata-WDC_WDS200T2B0A-00SM50_205007801081-part2  ONLINE       0     0     0

errors: No known data errors

maintenance commands

update-initramfs -v -u
grub-install /dev/sda

Convert from single to dual mirrored ZFS SSD

Assuming Ubuntu LTS 22.04 with "instal on ZFS" option, we will add a second SSD, configure ZFS to use both SSDs in mirrored configuration and setup grub to boot from either SSD. This is intended to create a full redundant system where failure of either SSD does not break the system.

identify first SSD

root@midm9b:~# ./smart-status.perl 
        Disk                    model               serial     temperature  realloc  pending   uncorr  CRC err     RRER Errors     Link
    /dev/sda  WD Blue SA510 2.5 250GB         22243Z803769              24        .        ?        ?        .        ?        .      6.0
root@midm9b:~#

connect second SSD of identical size

root@midm9b:~# ./smart-status.perl 
        Disk                    model               serial     temperature  realloc  pending   uncorr  CRC err     RRER   Errors     Link
    /dev/sda  WD Blue SA510 2.5 250GB         22243Z803769              24        .        ?        ?        .        ?        .      6.0
    /dev/sdb  WD Blue SA510 2.5 250GB         22243Z803852              25        .        ?        ?        .        ?        .      6.0
root@midm9b:~#

if second SSD is not autodetected, reboot
Clone partition table automatically

If both SSDs are identical size, use this simpler method of duplicating the partition table:

root@midm9b:~# sfdisk -d /dev/sda > part_table
root@midm9b:~# grep -v ^label-id part_table | sed -e 's/, *uuid=[0-9A-F-]*//' | sfdisk /dev/sdb

The grep and sed in the second command are there to prevent disk ID and partition IDs from being cloned. Alternatively the part_table file can be edited manually to remove the label-id line and the uuid entries from the individual partitions.

Clone partition table manually (e.g. for different size disks)
list partition table of first SSD:

root@midm9b:~# fdisk -l /dev/sda
Disk /dev/sda: 232.89 GiB, 250059350016 bytes, 488397168 sectors
Disk model: WD Blue SA510 2.
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 951A4174-B4C6-400D-99F5-BE9B5627FA8E

Device       Start       End   Sectors   Size Type
/dev/sda1     2048   1050623   1048576   512M EFI System
/dev/sda2  1050624   5244927   4194304     2G Linux swap
/dev/sda3  5244928   9439231   4194304     2G Solaris boot
/dev/sda4  9439232 488397134 478957903 228.4G Solaris root
root@midm9b:~#

create identical partitions on second SSD, use sector numbers from above.

root@midm9b:~# gdisk /dev/sdb
GPT fdisk (gdisk) version 1.0.8

Partition table scan:
  MBR: not present
  BSD: not present
  APM: not present
  GPT: not present

Creating new GPT entries in memory.

Command (? for help): n
Partition number (1-128, default 1): 
First sector (34-488397134, default = 2048) or {+-}size{KMGTP}: 
Last sector (2048-488397134, default = 488397134) or {+-}size{KMGTP}: 1050623
Current type is 8300 (Linux filesystem)
Hex code or GUID (L to show codes, Enter = 8300): ef00
Changed type of partition to 'EFI system partition'

Command (? for help): n
Partition number (2-128, default 2): 
First sector (34-488397134, default = 1050624) or {+-}size{KMGTP}: 
Last sector (1050624-488397134, default = 488397134) or {+-}size{KMGTP}: 5244927
Current type is 8300 (Linux filesystem)
Hex code or GUID (L to show codes, Enter = 8300): 8200
Changed type of partition to 'Linux swap'

Command (? for help): n
Partition number (3-128, default 3): 
First sector (34-488397134, default = 5244928) or {+-}size{KMGTP}: 
Last sector (5244928-488397134, default = 488397134) or {+-}size{KMGTP}: 9439231
Current type is 8300 (Linux filesystem)
Hex code or GUID (L to show codes, Enter = 8300): be00
Changed type of partition to 'Solaris boot'

Command (? for help): n
Partition number (4-128, default 4): 
First sector (34-488397134, default = 9439232) or {+-}size{KMGTP}: 
Last sector (9439232-488397134, default = 488397134) or {+-}size{KMGTP}: 
Current type is 8300 (Linux filesystem)
Hex code or GUID (L to show codes, Enter = 8300): bf00
Changed type of partition to 'Solaris root'

Command (? for help): w

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!

Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/sdb.
The operation has completed successfully.
root@midm9b:~# fdisk -l /dev/sda /dev/sdb
Disk /dev/sda: 232.89 GiB, 250059350016 bytes, 488397168 sectors
Disk model: WD Blue SA510 2.
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 951A4174-B4C6-400D-99F5-BE9B5627FA8E

Device       Start       End   Sectors   Size Type
/dev/sda1     2048   1050623   1048576   512M EFI System
/dev/sda2  1050624   5244927   4194304     2G Linux swap
/dev/sda3  5244928   9439231   4194304     2G Solaris boot
/dev/sda4  9439232 488397134 478957903 228.4G Solaris root


Disk /dev/sdb: 232.89 GiB, 250059350016 bytes, 488397168 sectors
Disk model: WD Blue SA510 2.
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: EB251739-30C6-422F-A505-5887B5A0B603

Device       Start       End   Sectors   Size Type
/dev/sdb1     2048   1050623   1048576   512M EFI System
/dev/sdb2  1050624   5244927   4194304     2G Linux swap
/dev/sdb3  5244928   9439231   4194304     2G Solaris boot
/dev/sdb4  9439232 488397134 478957903 228.4G Solaris root
root@midm9b:~#

identify second SSD partitions

root@midm9b:~# ls -l /dev/disk/by-id/ata*part3
lrwxrwxrwx 1 root root 10 Jan 20 18:37 /dev/disk/by-id/ata-WD_Blue_SA510_2.5_250GB_22243Z803769-part3 -> ../../sda3
lrwxrwxrwx 1 root root 10 Jan 20 19:34 /dev/disk/by-id/ata-WD_Blue_SA510_2.5_250GB_22243Z803852-part3 -> ../../sdb3
root@midm9b:~# ls -l /dev/disk/by-id/ata*part4
lrwxrwxrwx 1 root root 10 Jan 20 18:37 /dev/disk/by-id/ata-WD_Blue_SA510_2.5_250GB_22243Z803769-part4 -> ../../sda4
lrwxrwxrwx 1 root root 10 Jan 20 19:34 /dev/disk/by-id/ata-WD_Blue_SA510_2.5_250GB_22243Z803852-part4 -> ../../sdb4

convert bpool from single disk to mirrored disk:

root@midm9b:~# zpool status
  pool: bpool
 state: ONLINE
config:

	NAME                                    STATE     READ WRITE CKSUM
	bpool                                   ONLINE       0     0     0
	  99e03dc0-7d4d-f24b-8fa1-f042b9f135db  ONLINE       0     0     0

errors: No known data errors

  pool: rpool
 state: ONLINE
config:

	NAME                                    STATE     READ WRITE CKSUM
	rpool                                   ONLINE       0     0     0
	  f6fd54f8-3af7-b943-ae3d-a4e480537fb9  ONLINE       0     0     0

errors: No known data errors
root@midm9b:~# zpool attach bpool 99e03dc0-7d4d-f24b-8fa1-f042b9f135db /dev/disk/by-id/ata-WD_Blue_SA510_2.5_250GB_22243Z803852-part3
root@midm9b:~# zpool status bpool
  pool: bpool
 state: ONLINE
  scan: resilvered 247M in 00:00:00 with 0 errors on Fri Jan 20 19:39:40 2023
config:

	NAME                                                STATE     READ WRITE CKSUM
	bpool                                               ONLINE       0     0     0
	  mirror-0                                          ONLINE       0     0     0
	    99e03dc0-7d4d-f24b-8fa1-f042b9f135db            ONLINE       0     0     0
	    ata-WD_Blue_SA510_2.5_250GB_22243Z803852-part3  ONLINE       0     0     0

errors: No known data errors

convert rpool

root@midm9b:~# ls -l /dev/disk/by-id/ata*part4
lrwxrwxrwx 1 root root 10 Jan 20 18:37 /dev/disk/by-id/ata-WD_Blue_SA510_2.5_250GB_22243Z803769-part4 -> ../../sda4
lrwxrwxrwx 1 root root 10 Jan 20 19:34 /dev/disk/by-id/ata-WD_Blue_SA510_2.5_250GB_22243Z803852-part4 -> ../../sdb4
root@midm9b:~# zpool attach rpool f6fd54f8-3af7-b943-ae3d-a4e480537fb9 /dev/disk/by-id/ata-WD_Blue_SA510_2.5_250GB_22243Z803852-part4
root@midm9b:~# zpool status rpool
  pool: rpool
 state: ONLINE
status: One or more devices is currently being resilvered.  The pool will
	continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
  scan: resilver in progress since Fri Jan 20 19:40:45 2023
	5.83G scanned at 664M/s, 2.92M issued at 332K/s, 9.11G total
	0B resilvered, 0.03% done, no estimated completion time
config:

	NAME                                                STATE     READ WRITE CKSUM
	rpool                                               ONLINE       0     0     0
	  mirror-0                                          ONLINE       0     0     0
	    f6fd54f8-3af7-b943-ae3d-a4e480537fb9            ONLINE       0     0     0
	    ata-WD_Blue_SA510_2.5_250GB_22243Z803852-part4  ONLINE       0     0     0

errors: No known data errors
root@midm9b:~#

wait for resilver to complete

root@midm9b:~# zpool status
  pool: bpool
 state: ONLINE
  scan: resilvered 247M in 00:00:00 with 0 errors on Fri Jan 20 19:39:40 2023
config:

	NAME                                                STATE     READ WRITE CKSUM
	bpool                                               ONLINE       0     0     0
	  mirror-0                                          ONLINE       0     0     0
	    99e03dc0-7d4d-f24b-8fa1-f042b9f135db            ONLINE       0     0     0
	    ata-WD_Blue_SA510_2.5_250GB_22243Z803852-part3  ONLINE       0     0     0

errors: No known data errors

  pool: rpool
 state: ONLINE
  scan: resilvered 9.65G in 00:00:36 with 0 errors on Fri Jan 20 19:41:21 2023
config:

	NAME                                                STATE     READ WRITE CKSUM
	rpool                                               ONLINE       0     0     0
	  mirror-0                                          ONLINE       0     0     0
	    f6fd54f8-3af7-b943-ae3d-a4e480537fb9            ONLINE       0     0     0
	    ata-WD_Blue_SA510_2.5_250GB_22243Z803852-part4  ONLINE       0     0     0

errors: No known data errors

enable booting from second SSD: (instead of /dev/sda1, /dev/sdb1, use UUID=xxx)

root@midm9b:~# mkfs.msdos /dev/sdb1
root@midm9b:~# mkdir /boot/efi-sda
root@midm9b:~# mkdir /boot/efi-sdb
root@midm9b:~# echo "/dev/sda1 /boot/efi-sda       vfat    umask=0022,fmask=0022,dmask=0022,nofail      0       1" >> /etc/fstab
root@midm9b:~# echo "/dev/sdb1 /boot/efi-sdb       vfat    umask=0022,fmask=0022,dmask=0022,nofail      0       1" >> /etc/fstab
root@midm9b:~# mount -a
root@midm9b:~# df -kl
Filesystem                                       1K-blocks    Used Available Use% Mounted on
...
/dev/sda1                                           523244   13720    509524   3% /boot/efi
/dev/sdb1                                           523244       4    523240   1% /boot/efi-sdb
...
root@midm9b:~# rsync -av /boot/efi/ /boot/efi-sdb/
sending incremental file list
EFI/
...
root@midm9b:~# ls -l /boot/efi-sda
total 8
drwxr-xr-x 4 root root 4096 Jan 19 23:26 EFI
drwxr-xr-x 5 root root 4096 Jan 19 23:26 grub
root@midm9b:~# ls -l /boot/efi-sdb
total 8
drwxr-xr-x 4 root root 4096 Jan 19 23:26 EFI
drwxr-xr-x 5 root root 4096 Jan 19 23:26 grub
root@midm9b:~#

setup script to update grub on second SSD, it must be run manually after every kernel update

root@midm9b:~# ln -s ~/git/scripts/etc/update_efi_grub.perl ~/
root@midm9b:~# ~/update_efi_grub.perl -u
EFI dir: /boot/efi-sda
/boot/efi-sda: update grub: rsync  -av --delete-after --modify-window=2 /boot/efi/grub/ /boot/efi-sda/grub
building file list ... done

sent 5,313 bytes  received 11 bytes  10,648.00 bytes/sec
total size is 7,944,644  speedup is 1,492.23
/boot/efi-sda: update efi:  rsync  -av --delete-after --modify-window=2 /boot/efi/EFI/  /boot/efi-sda/EFI
building file list ... done

sent 216 bytes  received 11 bytes  454.00 bytes/sec
total size is 5,452,378  speedup is 24,019.29
EFI dir: /boot/efi-sdb
/boot/efi-sdb: update grub: rsync  -av --delete-after --modify-window=2 /boot/efi/grub/ /boot/efi-sdb/grub
building file list ... done

sent 5,313 bytes  received 11 bytes  10,648.00 bytes/sec
total size is 7,944,644  speedup is 1,492.23
/boot/efi-sdb: update efi:  rsync  -av --delete-after --modify-window=2 /boot/efi/EFI/  /boot/efi-sdb/EFI
building file list ... done

sent 216 bytes  received 11 bytes  454.00 bytes/sec
total size is 5,452,378  speedup is 24,019.29
root@midm9b:~#

Disable NetworkManager

NOTE: THIS IS BROKEN IN UBUNTU LTS 22.04

NetworkManager is useful for configuring dynamic network interfaces, i.e. laptops that often move between networks, or connect to multiple choice of wifi networks, etc.

For machines with statically configured network interfaces, NetworkManager is not necessary.

As it has been observed to become confused and observed to malfunction when network links go up and down (it keeps unnecessarily reconfiguring the ip address, etc), it can be usefuil to disable it.

list all network interfaces

# /bin/ls -1 /sys/class/net/
enp0s31f6
lo

edit /etc/network/interfaces:

rename enp0s31f6=eth0
auto eth0
iface eth0 inet static
   address 142.90.120.94/19
   gateway 142.90.100.18

statically configure systemd-resolved
- create /etc/systemd/resolved.conf.d/resolved.conf with this contents:

[Resolve]
DNS=142.90.100.19
Domains=triumf.ca

- systemctl restart systemd-resolved
- resolvectl
- systemd-analyze cat-config systemd/resolved.conf
disable NetworkManager

systemctl disable NetworkManager

reboot

Configure ECC memory

Configure EDAC

apt install edac-utils

Intel i3-2120

root@musr00:~# edac-ctl --mainboard
edac-ctl: mainboard: Supermicro X9SCL/X9SCM
root@musr00:~# edac-ctl --status
edac-ctl: drivers not loaded.

Intel E-2236

root@daq00:~# edac-ctl --mainboard
edac-ctl: mainboard: Supermicro X11SCM-F
root@daq00:~# edac-ctl --status
edac-ctl: drivers are loaded.
root@daq00:~# edac-util 
edac-util: No errors to report.
root@daq00:~# edac-util -s
edac-util: EDAC drivers are loaded. 1 MC detected

check edac sysfs files (Intel)

root@daq00:~# ls -l /sys/devices/system/edac/mc/mc0
total 0
-r--r--r-- 1 root root 4096 Jan 25 15:10 ce_count
-r--r--r-- 1 root root 4096 Jan 25 15:10 ce_noinfo_count
-r--r--r-- 1 root root 4096 Jan 25 15:10 max_location
-r--r--r-- 1 root root 4096 Jan 25 15:10 mc_name
drwxr-xr-x 2 root root    0 Jan 25 15:10 power
drwxr-xr-x 3 root root    0 Jan 25 15:10 rank0
drwxr-xr-x 3 root root    0 Jan 25 15:10 rank1
drwxr-xr-x 3 root root    0 Jan 25 15:10 rank2
drwxr-xr-x 3 root root    0 Jan 25 15:10 rank3
drwxr-xr-x 3 root root    0 Jan 25 15:10 rank4
drwxr-xr-x 3 root root    0 Jan 25 15:10 rank5
drwxr-xr-x 3 root root    0 Jan 25 15:10 rank6
drwxr-xr-x 3 root root    0 Jan 25 15:10 rank7
--w------- 1 root root 4096 Jan 25 15:10 reset_counters
-r--r--r-- 1 root root 4096 Jan 25 15:10 seconds_since_reset
-r--r--r-- 1 root root 4096 Jan 25 15:10 size_mb
-r--r--r-- 1 root root 4096 Jan 25 15:10 ue_count
-r--r--r-- 1 root root 4096 Jan 25 15:10 ue_noinfo_count
-rw-r--r-- 1 root root 4096 Jan 25 15:10 uevent
root@daq00:~#

Intel E3-1270 v6

root@wheel-SYS-5019S-M:~/git/scripts# edac-ctl --mainboard
edac-ctl: mainboard: Supermicro X11SSH-F
root@wheel-SYS-5019S-M:~/git/scripts# edac-ctl --status
edac-ctl: drivers are loaded.
root@grsnis01:~# edac-util
edac-util: No errors to report.
root@grsnis01:~# edac-util -s
edac-util: EDAC drivers are loaded. 1 MC detected
root@grsnis01:~# ls -l /sys/devices/system/edac/mc/mc0
total 0
-r--r--r-- 1 root root 4096 Feb 19 12:35 ce_count
-r--r--r-- 1 root root 4096 Feb 19 12:35 ce_noinfo_count
-r--r--r-- 1 root root 4096 Feb 19 12:35 max_location
-r--r--r-- 1 root root 4096 Feb 19 12:35 mc_name
drwxr-xr-x 2 root root    0 Feb 19 12:35 power
drwxr-xr-x 3 root root    0 Feb 19 12:35 rank0
drwxr-xr-x 3 root root    0 Feb 19 12:35 rank1
drwxr-xr-x 3 root root    0 Feb 19 12:35 rank2
drwxr-xr-x 3 root root    0 Feb 19 12:35 rank3
drwxr-xr-x 3 root root    0 Feb 19 12:35 rank4
drwxr-xr-x 3 root root    0 Feb 19 12:35 rank5
drwxr-xr-x 3 root root    0 Feb 19 12:35 rank6
drwxr-xr-x 3 root root    0 Feb 19 12:35 rank7
--w------- 1 root root 4096 Feb 19 12:35 reset_counters
-r--r--r-- 1 root root 4096 Feb 19 12:35 seconds_since_reset
-r--r--r-- 1 root root 4096 Feb 19 12:35 size_mb
-r--r--r-- 1 root root 4096 Feb 19 12:35 ue_count
-r--r--r-- 1 root root 4096 Feb 19 12:35 ue_noinfo_count
-rw-r--r-- 1 root root 4096 Feb 19 12:35 uevent
root@grsnis01:~#

Intel E3-1245 v6

[root@alphagdaq ~]# edac-ctl --mainboard
edac-ctl: mainboard: Supermicro X11SSH-F
[root@alphagdaq ~]# edac-ctl --mainboard
edac-ctl: mainboard: Supermicro X11SSH-F
[root@alphagdaq ~]# edac-ctl --status
edac-ctl: drivers are loaded.
[root@alphagdaq ~]# edac-util
edac-util: No errors to report.
[root@alphagdaq ~]# edac-util -s
edac-util: EDAC drivers are loaded. 1 MC detected
[root@alphagdaq ~]# ras-mc-ctl --layout
          +-----------------------------------------------+
          |                      mc0                      |
          |  csrow0   |  csrow1   |  csrow2   |  csrow3   |
----------+-----------------------------------------------+
channel1: |  8192 MB  |  8192 MB  |  8192 MB  |  8192 MB  |
channel0: |  8192 MB  |  8192 MB  |  8192 MB  |  8192 MB  |
----------+-----------------------------------------------+
[root@alphagdaq ~]# ras-mc-ctl --error-count
Label               	CE	UE
mc#0csrow#3channel#0	0	0
mc#0csrow#2channel#1	0	0
mc#0csrow#3channel#1	0	0
mc#0csrow#0channel#0	0	0
mc#0csrow#1channel#1	0	0
mc#0csrow#0channel#1	0	0
mc#0csrow#1channel#0	0	0
mc#0csrow#2channel#0	0	0
[root@alphagdaq ~]# ras-mc-ctl --mainboard
ras-mc-ctl: mainboard: Supermicro model X11SSH-F
[root@alphagdaq ~]# ras-mc-ctl --summary
DBD::SQLite::db prepare failed: no such table: mc_event at /usr/sbin/ras-mc-ctl line 1129.
Can't call method "execute" on an undefined value at /usr/sbin/ras-mc-ctl line 1130.
[root@alphagdaq ~]#

AMD 3700X

(memory is non-ECC)

root@daq13:~# edac-ctl --mainboard
edac-ctl: mainboard: ASUSTeK COMPUTER INC. ROG STRIX B550-E GAMING
root@daq13:~# 
root@daq13:~# 
root@daq13:~# edac-ctl --status
edac-ctl: drivers not loaded.
root@daq13:~# edac-util 
edac-util: Error: No memory controller data found.
root@daq13:~# edac-util -s
edac-util: EDAC drivers loaded. No memory controllers found
root@daq13:~# ls -l /sys/devices/system/edac/mc
total 0
drwxr-xr-x 2 root root    0 Jan 25 15:26 power
lrwxrwxrwx 1 root root    0 Jan 21 16:16 subsystem -> ../../../../bus/edac
-rw-r--r-- 1 root root 4096 Jan 21 16:16 uevent

(memory is ECC)

root@trinatdaq:~# edac-ctl --mainboard
edac-ctl: mainboard: ASUSTeK COMPUTER INC. ROG STRIX B550-E GAMING
root@trinatdaq:~# edac-ctl --status
edac-ctl: drivers are loaded.
root@trinatdaq:~# edac-util 
edac-util: No errors to report.
root@trinatdaq:~# edac-util -s
edac-util: EDAC drivers are loaded. 1 MC detected
root@trinatdaq:~# ls -l /sys/devices/system/edac/mc
total 0
drwxr-xr-x 7 root root    0 Dec 15 13:04 mc0
drwxr-xr-x 2 root root    0 Dec 15 13:04 power
lrwxrwxrwx 1 root root    0 Dec 13 18:31 subsystem -> ../../../../bus/edac
-rw-r--r-- 1 root root 4096 Dec 13 18:31 uevent
root@trinatdaq:~# ls -l /sys/devices/system/edac/mc/mc0
total 0
-r--r--r-- 1 root root 4096 Dec 15 13:04 ce_count
-r--r--r-- 1 root root 4096 Dec 15 13:04 ce_noinfo_count
-r--r--r-- 1 root root 4096 Dec 15 13:04 max_location
-r--r--r-- 1 root root 4096 Dec 15 13:04 mc_name
drwxr-xr-x 2 root root    0 Dec 15 13:04 power
drwxr-xr-x 3 root root    0 Dec 15 13:04 rank4
drwxr-xr-x 3 root root    0 Dec 15 13:04 rank5
drwxr-xr-x 3 root root    0 Dec 15 13:04 rank6
drwxr-xr-x 3 root root    0 Dec 15 13:04 rank7
--w------- 1 root root 4096 Dec 15 13:04 reset_counters
-rw-r--r-- 1 root root 4096 Dec 15 13:04 sdram_scrub_rate
-r--r--r-- 1 root root 4096 Dec 15 13:04 seconds_since_reset
-r--r--r-- 1 root root 4096 Dec 15 13:04 size_mb
-r--r--r-- 1 root root 4096 Dec 15 13:04 ue_count
-r--r--r-- 1 root root 4096 Dec 15 13:04 ue_noinfo_count
-rw-r--r-- 1 root root 4096 Dec 15 13:04 uevent
root@trinatdaq:~#

AMD 5000G

no linux driver for AMD 5000-series "G" CPU
no mention of ECC in the BIOS settings
unclear status of ECC support in AMD documentation (sais only "pro" "G" CPUs have ECC)
unclear status of ECC support in ASUS documentation (web page out of date)

AMD 5600X

root@daq17:~# edac-ctl --mainboard
edac-ctl: mainboard: ASUSTeK COMPUTER INC. ROG STRIX B550-XE GAMING WIFI
root@daq17:~# edac-ctl --status
edac-ctl: drivers are loaded.
root@daq17:~# edac-util
edac-util: No errors to report.
root@daq17:~# edac-util -s
edac-util: EDAC drivers are loaded. 1 MC detected
root@daq17:~# ls -l /sys/devices/system/edac/mc
total 0
drwxr-xr-x 7 root root    0 Aug 19 19:27 mc0
drwxr-xr-x 2 root root    0 Aug 19 19:27 power
lrwxrwxrwx 1 root root    0 May 10 10:11 subsystem -> ../../../../bus/edac
-rw-r--r-- 1 root root 4096 May 10 10:11 uevent
root@daq17:~# ls -l /sys/devices/system/edac/mc/mc0
total 0
-r--r--r-- 1 root root 4096 Aug 19 19:27 ce_count
-r--r--r-- 1 root root 4096 Aug 19 19:27 ce_noinfo_count
-r--r--r-- 1 root root 4096 Aug 19 19:27 max_location
-r--r--r-- 1 root root 4096 Aug 19 19:27 mc_name
drwxr-xr-x 2 root root    0 Aug 19 19:27 power
drwxr-xr-x 3 root root    0 Aug 19 19:27 rank4
drwxr-xr-x 3 root root    0 Aug 19 19:27 rank5
drwxr-xr-x 3 root root    0 Aug 19 19:27 rank6
drwxr-xr-x 3 root root    0 Aug 19 19:27 rank7
--w------- 1 root root 4096 Aug 19 19:27 reset_counters
-rw-r--r-- 1 root root 4096 Aug 19 19:27 sdram_scrub_rate
-r--r--r-- 1 root root 4096 Aug 19 19:27 seconds_since_reset
-r--r--r-- 1 root root 4096 Aug 19 19:27 size_mb
-r--r--r-- 1 root root 4096 Aug 19 19:27 ue_count
-r--r--r-- 1 root root 4096 Aug 19 19:27 ue_noinfo_count
-rw-r--r-- 1 root root 4096 Aug 19 19:27 uevent
root@daq17:~#

AMD 3955WX

root@alphasuperdaq:~/git/scripts/quotareport# edac-ctl --mainboard
edac-ctl: mainboard: ASUSTeK COMPUTER INC. Pro WS WRX80E-SAGE SE WIFI
root@alphasuperdaq:~/git/scripts/quotareport# edac-ctl --status
edac-ctl: drivers are loaded.
root@alphasuperdaq:~/git/scripts/quotareport# edac-util 
edac-util: No errors to report.
root@alphasuperdaq:~/git/scripts/quotareport# edac-util -s
edac-util: EDAC drivers are loaded. 1 MC detected
root@alphasuperdaq:~/git/scripts/quotareport# ls -l /sys/devices/system/edac/mc
total 0
drwxr-xr-x 19 root root    0 Dez 12 04:48 mc0
drwxr-xr-x  2 root root    0 Dez 12 04:48 power
lrwxrwxrwx  1 root root    0 Dez  9 05:31 subsystem -> ../../../../bus/edac
-rw-r--r--  1 root root 4096 Dez  9 05:31 uevent
root@alphasuperdaq:~/git/scripts/quotareport# 
root@alphasuperdaq:~# ls -l /sys/devices/system/edac/mc/mc0
total 0
-r--r--r-- 1 root root 4096 Feb 28 22:19 ce_count
-r--r--r-- 1 root root 4096 Feb 28 22:19 ce_noinfo_count
-r--r--r-- 1 root root 4096 Feb 28 22:19 max_location
-r--r--r-- 1 root root 4096 Feb 28 22:19 mc_name
drwxr-xr-x 2 root root    0 Dez 12 04:48 power
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank0
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank1
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank10
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank11
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank12
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank13
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank14
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank15
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank2
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank3
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank4
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank5
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank6
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank7
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank8
drwxr-xr-x 3 root root    0 Dez 12 04:48 rank9
--w------- 1 root root 4096 Feb 28 22:19 reset_counters
-rw-r--r-- 1 root root 4096 Feb 28 22:19 sdram_scrub_rate
-r--r--r-- 1 root root 4096 Feb 28 22:19 seconds_since_reset
-r--r--r-- 1 root root 4096 Feb 28 22:19 size_mb
-r--r--r-- 1 root root 4096 Feb 28 22:19 ue_count
-r--r--r-- 1 root root 4096 Feb 28 22:19 ue_noinfo_count
-rw-r--r-- 1 root root 4096 Feb 28 22:19 uevent
root@alphasuperdaq:~# 
root@alphasuperdaq:~# ras-mc-ctl --layout
Use of uninitialized value $max_pos[3] in modulus (%) at /usr/sbin/ras-mc-ctl line 868.
Use of uninitialized value $d in numeric ge (>=) at /usr/sbin/ras-mc-ctl line 869.
Use of uninitialized value $d in sprintf at /usr/sbin/ras-mc-ctl line 872.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
Use of uninitialized value $pos[3] in join or string at /usr/sbin/ras-mc-ctl line 791.
    +-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    |                                                                                              mc0                                                                                              |
    |                                            csrow0                                             |                                            csrow1                                             |
    | channel0  | channel1  | channel2  | channel3  | channel4  | channel5  | channel6  | channel7  | channel0  | channel1  | channel2  | channel3  | channel4  | channel5  | channel6  | channel7  |
----+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

0: |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |     0 MB  |
----+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
root@alphasuperdaq:~# ras-mc-ctl --error-count
Label               	CE	UE
mc#0csrow#0channel#2	0	0
mc#0csrow#1channel#7	0	0
mc#0csrow#0channel#3	0	0
mc#0csrow#1channel#4	0	0
mc#0csrow#1channel#2	0	0
mc#0csrow#0channel#7	0	0
mc#0csrow#1channel#3	0	0
mc#0csrow#0channel#4	0	0
mc#0csrow#1channel#1	0	0
mc#0csrow#1channel#0	0	0
mc#0csrow#1channel#5	0	0
mc#0csrow#0channel#6	0	0
mc#0csrow#0channel#1	0	0
mc#0csrow#0channel#5	0	0
mc#0csrow#0channel#0	0	0
mc#0csrow#1channel#6	0	0
root@alphasuperdaq:~# ras-mc-ctl --mainboard
ras-mc-ctl: mainboard: ASUSTeK COMPUTER INC. model Pro WS WRX80E-SAGE SE WIFI
root@alphasuperdaq:~# ras-mc-ctl --summary
No Memory errors.

No PCIe AER errors.

No Extlog errors.

DBD::SQLite::db prepare failed: no such table: devlink_event at /usr/sbin/ras-mc-ctl line 1181.
Can't call method "execute" on an undefined value at /usr/sbin/ras-mc-ctl line 1182.
root@alphasuperdaq:~#

Configure rasdaemon

apt install rasdaemon

systemctl enable rasdaemon
systemctl restart rasdaemon
systemctl status rasdaemon

● rasdaemon.service - RAS daemon to log the RAS events
     Loaded: loaded (/lib/systemd/system/rasdaemon.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2021-01-25 15:16:37 PST; 3min 5s ago
   Main PID: 2477175 (rasdaemon)
      Tasks: 1 (limit: 76958)
     Memory: 17.1M
     CGroup: /system.slice/rasdaemon.service
             └─2477175 /usr/sbin/rasdaemon -f -r

Jan 25 15:16:37 daq00.triumf.ca rasdaemon[2477175]: rasdaemon: ras:extlog_mem_event event enabled
Jan 25 15:16:37 daq00.triumf.ca rasdaemon[2477175]: rasdaemon: Enabled event ras:extlog_mem_event
Jan 25 15:16:37 daq00.triumf.ca rasdaemon[2477175]: ras:extlog_mem_event event enabled
Jan 25 15:16:37 daq00.triumf.ca rasdaemon[2477175]: rasdaemon: Listening to events for cpus 0 to 11
Jan 25 15:16:37 daq00.triumf.ca rasdaemon[2477175]: Enabled event ras:extlog_mem_event
Jan 25 15:16:37 daq00.triumf.ca rasdaemon[2477175]: rasdaemon: Recording mc_event events
Jan 25 15:16:37 daq00.triumf.ca rasdaemon[2477175]: rasdaemon: Recording aer_event events
Jan 25 15:16:37 daq00.triumf.ca rasdaemon[2477175]: rasdaemon: Recording extlog_event events
Jan 25 15:16:37 daq00.triumf.ca rasdaemon[2477175]: rasdaemon: Recording mce_record events
Jan 25 15:16:37 daq00.triumf.ca rasdaemon[2477175]: rasdaemon: Recording arm_event events

Get reports

Intel 2x32GB ECC DIMMs

root@daq00:~# ras-mc-ctl --layout
          +-------------------------+
          |           mc0           |
          |   csrow0   |   csrow1   |
----------+-------------------------+
channel1: |  16384 MB  |  16384 MB  |
channel0: |  16384 MB  |  16384 MB  |
----------+-------------------------+
root@daq00:~# ras-mc-ctl --error-count
Label                   CE      UE
mc#0csrow#1channel#1    0       0
mc#0csrow#1channel#0    0       0
mc#0csrow#0channel#0    0       0
mc#0csrow#0channel#1    0       0
root@daq00:~#

Intel 4x16GB ECC DIMMs

root@daq00:~# ras-mc-ctl --error-count
Label                   CE      UE
mc#0csrow#0channel#1    0       0
mc#0csrow#2channel#0    0       0
mc#0csrow#0channel#0    0       0
mc#0csrow#2channel#1    0       0
mc#0csrow#1channel#0    0       0
mc#0csrow#1channel#1    0       0
mc#0csrow#3channel#0    0       0
mc#0csrow#3channel#1    0       0
root@daq00:~# 
root@daq00:~# ras-mc-ctl --layout
          +-----------------------+
          |          mc0          |
          |  csrow0   |  csrow1   |
----------+-----------------------+
channel1: |  8192 MB  |  8192 MB  |
channel0: |  8192 MB  |  8192 MB  |
----------+-----------------------+
root@daq00:~# 
root@daq00:~# 
root@daq00:~# 
root@daq00:~# ras-mc-ctl --print-labels
ras-mc-ctl: Error: No dimm labels for Supermicro model X11SCM-F
root@daq00:~# ras-mc-ctl --mainboard
ras-mc-ctl: mainboard: Supermicro model X11SCM-F
root@daq00:~# ras-mc-ctl --summary
No Memory errors.

No PCIe AER errors.

No Extlog errors.

DBD::SQLite::db prepare failed: no such table: devlink_event at /usr/sbin/ras-mc-ctl line 1181.
Can't call method "execute" on an undefined value at /usr/sbin/ras-mc-ctl line 1182.
root@daq00:~#

note: ubuntu LTS 22.04 DBD::SQLite::db error is not there.

sensors

ASUS P9X79 WS

https://www.asus.com/supportonly/P9X79%20WS/HelpDesk_Manual/
BIOS version 4802
modprobe nct6775
modprobe coretemp

root@daq14:~# sensors
coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +35.0°C  (high = +82.0°C, crit = +100.0°C)
Core 0:        +29.0°C  (high = +82.0°C, crit = +100.0°C)
Core 1:        +24.0°C  (high = +82.0°C, crit = +100.0°C)
Core 2:        +35.0°C  (high = +82.0°C, crit = +100.0°C)
Core 3:        +32.0°C  (high = +82.0°C, crit = +100.0°C)

nouveau-pci-0200
Adapter: PCI adapter
GPU core:    900.00 mV (min =  +0.85 V, max =  +1.00 V)
temp1:        +39.0°C  (high = +95.0°C, hyst =  +3.0°C)
                       (crit = +105.0°C, hyst =  +5.0°C)
                       (emerg = +135.0°C, hyst =  +5.0°C)

nct6776-isa-0290
Adapter: ISA adapter
Vcore:           1.04 V  (min =  +0.00 V, max =  +1.74 V)
in1:             1.01 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
AVCC:            3.33 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
+3.3V:           3.33 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in4:             1.01 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in5:             2.04 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in6:           904.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
3VSB:            3.41 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
Vbat:            3.30 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
fan1:          1265 RPM  (min =    0 RPM)
fan2:          1909 RPM  (min =    0 RPM)
fan3:             0 RPM  (min =    0 RPM)
fan4:             0 RPM  (min =    0 RPM)
fan5:             0 RPM  (min =    0 RPM)
SYSTIN:         +34.0°C  (high =  +0.0°C, hyst =  +0.0°C)  ALARM  sensor = thermistor
CPUTIN:         +58.0°C  (high = +80.0°C, hyst = +75.0°C)  sensor = thermal diode
AUXTIN:         +31.5°C  (high = +80.0°C, hyst = +75.0°C)  sensor = thermistor
PECI Agent 0:   +31.0°C  (high = +80.0°C, hyst = +75.0°C)
                         (crit = +96.0°C)
PCH_CHIP_TEMP:   +0.0°C  
PCH_CPU_TEMP:    +0.0°C  
PCH_MCH_TEMP:    +0.0°C  
intrusion0:    ALARM
intrusion1:    ALARM
beep_enable:   disabled

root@daq14:~#

ASUS TUF GAMING B550M-PLUS WIFI II

BIOS 2803, 2806
echo modprobe nct6775 >> /etc/rc.local

root@midm9a:~# sensors
nct6798-isa-0290
Adapter: ISA adapter
in0:                      488.00 mV (min =  +0.00 V, max =  +1.74 V)
in1:                        1.02 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in2:                        3.41 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in3:                        3.38 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in4:                        1.01 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in5:                        1.01 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in6:                      208.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in7:                        3.41 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in8:                        3.33 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in9:                        1.82 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in10:                       1.01 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in11:                       1.01 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in12:                       1.03 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in13:                       1.01 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in14:                       1.02 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
fan1:                        0 RPM  (min =    0 RPM)
fan2:                      760 RPM  (min =    0 RPM)
fan3:                        0 RPM  (min =    0 RPM)
fan7:                     1264 RPM  (min =    0 RPM)
SYSTIN:                    +25.0°C  (high = +80.0°C, hyst = +75.0°C)  sensor = thermistor
CPUTIN:                    +22.5°C  (high = +80.0°C, hyst = +75.0°C)  sensor = thermistor
AUXTIN0:                   +95.0°C    sensor = thermistor
AUXTIN1:                   +25.0°C    sensor = thermistor
AUXTIN2:                   +25.0°C    sensor = thermistor
AUXTIN3:                   +25.0°C    sensor = thermistor
PECI Agent 0 Calibration:  +23.5°C  
PCH_CHIP_CPU_MAX_TEMP:      +0.0°C  
PCH_CHIP_TEMP:              +0.0°C  
PCH_CPU_TEMP:               +0.0°C  
TSI0_TEMP:                 +32.4°C  
intrusion0:               ALARM
intrusion1:               ALARM
beep_enable:              disabled

amdgpu-pci-0800
Adapter: PCI adapter
vddgfx:        1.45 V  
vddnb:       993.00 mV 
edge:         +28.0°C  
PPT:          20.00 W  

k10temp-pci-00c3
Adapter: PCI adapter
Tctl:         +33.4°C  

root@midm9a:~#

ASUS ASUS ROG STRIX B550-XE GAMING WIFI

BIOS 2423, 2604
echo modprobe nct6775 >> /etc/rc.local

root@daq13:~# sensors
nct6798-isa-0290
Adapter: ISA adapter
in0:                      344.00 mV (min =  +0.00 V, max =  +1.74 V)
in1:                      992.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in2:                        3.41 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in3:                        3.39 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in4:                        1.02 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in5:                      960.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in6:                      216.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in7:                        3.41 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in8:                        3.30 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in9:                        1.81 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in10:                     960.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in11:                     960.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in12:                       1.03 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in13:                     280.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in14:                     208.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
fan1:                      845 RPM  (min =    0 RPM)
fan2:                      998 RPM  (min =    0 RPM)
fan3:                        0 RPM  (min =    0 RPM)
fan4:                        0 RPM  (min =    0 RPM)
fan5:                        0 RPM  (min =    0 RPM)
SYSTIN:                    +28.0°C  (high = +80.0°C, hyst = +75.0°C)  sensor = thermistor
CPUTIN:                    +27.5°C  (high = +80.0°C, hyst = +75.0°C)  sensor = thermistor
AUXTIN0:                   +94.0°C    sensor = thermistor
AUXTIN1:                   +28.0°C    sensor = thermistor
AUXTIN2:                   +28.0°C    sensor = thermistor
AUXTIN3:                   +97.0°C    sensor = thermistor
PECI Agent 0 Calibration:  +27.5°C  
PCH_CHIP_CPU_MAX_TEMP:      +0.0°C  
PCH_CHIP_TEMP:              +0.0°C  
PCH_CPU_TEMP:               +0.0°C  
TSI0_TEMP:                 +33.6°C  
intrusion0:               ALARM
intrusion1:               ALARM
beep_enable:              disabled

amdgpu-pci-0600
Adapter: PCI adapter
vddgfx:        1.45 V  
vddnb:       999.00 mV 
edge:         +29.0°C  
PPT:          14.00 W  

iwlwifi_1-virtual-0
Adapter: Virtual device
temp1:        +30.0°C  

k10temp-pci-00c3
Adapter: PCI adapter
Tctl:         +33.9°C  

root@daq13:~#

ASUS ASUS ROG STRIX B550-E GAMING

bios 2803
echo modprobe jc42 >> /etc/rc.local
echo modprobe nct6775 >> /etc/rc.local

root@daq17:~# sensors
jc42-i2c-1-1b
Adapter: SMBus PIIX4 adapter port 0 at 0b00
temp1:        +25.0°C  (low  =  +0.0°C)                  ALARM (HIGH, CRIT)
                       (high =  +0.0°C, hyst =  +0.0°C)
                       (crit =  +0.0°C, hyst =  +0.0°C)

iwlwifi_1-virtual-0
Adapter: Virtual device
temp1:        +28.0°C  

nouveau-pci-0800
Adapter: PCI adapter
GPU core:    900.00 mV (min =  +0.85 V, max =  +1.00 V)
temp1:        +34.0°C  (high = +95.0°C, hyst =  +3.0°C)
                       (crit = +105.0°C, hyst =  +5.0°C)
                       (emerg = +135.0°C, hyst =  +5.0°C)

nct6798-isa-0290
Adapter: ISA adapter
in0:                      288.00 mV (min =  +0.00 V, max =  +1.74 V)
in1:                        1.02 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in2:                        3.36 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in3:                        3.38 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in4:                        1.02 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in5:                        1.06 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in6:                      224.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in7:                        3.36 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in8:                        3.31 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in9:                        1.79 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in10:                       1.06 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in11:                       1.06 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in12:                       1.02 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in13:                     280.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in14:                     208.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
fan1:                      843 RPM  (min =    0 RPM)
fan2:                      629 RPM  (min =    0 RPM)
fan3:                      746 RPM  (min =    0 RPM)
fan4:                        0 RPM  (min =    0 RPM)
fan5:                        0 RPM  (min =    0 RPM)
SYSTIN:                    +22.0°C  (high = +80.0°C, hyst = +75.0°C)  sensor = thermistor
CPUTIN:                    +25.0°C  (high = +80.0°C, hyst = +75.0°C)  sensor = thermistor
AUXTIN0:                   +93.0°C    sensor = thermistor
AUXTIN1:                   +22.0°C    sensor = thermistor
AUXTIN2:                   +22.0°C    sensor = thermistor
AUXTIN3:                   +96.0°C    sensor = thermistor
PECI Agent 0 Calibration:  +25.5°C  
PCH_CHIP_CPU_MAX_TEMP:      +0.0°C  
PCH_CHIP_TEMP:              +0.0°C  
PCH_CPU_TEMP:               +0.0°C  
TSI0_TEMP:                 +27.6°C  
intrusion0:               ALARM
intrusion1:               ALARM
beep_enable:              disabled

jc42-i2c-1-1a
Adapter: SMBus PIIX4 adapter port 0 at 0b00
temp1:        +23.2°C  (low  =  +0.0°C)                  ALARM (HIGH, CRIT)
                       (high =  +0.0°C, hyst =  +0.0°C)
                       (crit =  +0.0°C, hyst =  +0.0°C)

asusec-isa-0000
Adapter: ISA adapter
CPU_Opt:        0 RPM
Chipset:      +34.0°C  
CPU:          +25.0°C  
Motherboard:  +22.0°C  
T_Sensor:     -40.0°C  
VRM:          +31.0°C  

k10temp-pci-00c3
Adapter: PCI adapter
Tctl:         +28.0°C  
Tccd1:        +27.5°C  

root@daq17:~#

ASUS PRIME B650-PLUS

BIOS 1811
echo modprobe nct6775 >> /etc/rc.local

root@dsdaqgw:~# sensors
amdgpu-pci-0b00
Adapter: PCI adapter
vddgfx:      930.00 mV 
vddnb:         1.19 V  
edge:         +38.0°C  
PPT:          25.10 W  

nct6799-isa-0290
Adapter: ISA adapter
in0:                      920.00 mV (min =  +0.00 V, max =  +1.74 V)
in1:                        1.02 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in2:                        3.39 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in3:                        3.38 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in4:                        1.02 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in5:                        1.04 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in6:                      320.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in7:                        3.39 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in8:                        3.28 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in9:                        3.38 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in10:                       1.28 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in11:                       1.10 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in12:                       1.04 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in13:                     416.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in14:                     328.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
fan1:                        0 RPM  (min =    0 RPM)
fan2:                     1253 RPM  (min =    0 RPM)
fan3:                        0 RPM  (min =    0 RPM)
fan4:                        0 RPM  (min =    0 RPM)
fan5:                        0 RPM  (min =    0 RPM)
fan7:                        0 RPM  (min =    0 RPM)
SYSTIN:                    +33.0°C  (high = +80.0°C, hyst = +75.0°C)  sensor = thermistor
CPUTIN:                    +35.5°C  (high = +80.0°C, hyst = +75.0°C)  sensor = thermistor
AUXTIN0:                   +78.0°C    sensor = thermistor
AUXTIN1:                   +11.0°C    sensor = thermistor
AUXTIN2:                   +20.0°C    sensor = thermistor
AUXTIN3:                   +82.0°C    sensor = thermistor
PECI Agent 0 Calibration:  +35.5°C  
PCH_CHIP_CPU_MAX_TEMP:      +0.0°C  
PCH_CHIP_TEMP:              +0.0°C  
PCH_CPU_TEMP:               +0.0°C  
TSI0_TEMP:                 +42.6°C  
intrusion0:               ALARM
intrusion1:               OK
beep_enable:              disabled

k10temp-pci-00c3
Adapter: PCI adapter
Tctl:         +42.6°C  
Tccd1:        +36.4°C  

root@dsdaqgw:~#

Enable CPU turbo mode

Intel CPU has a nominal CPU frequency (i.e. 3.4GHz) and a turbo-boost CPU frequency (i.e. 4.0GHz). Here we will enable this turbo-boost mode.
Find out CPU capability

root@daq01:~# lscpu | grep Hz
Model name:                      Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
CPU MHz:                         3965.803
CPU max MHz:                     4000.0000
CPU min MHz:                     800.0000
root@daq01:~#

Look up this CPU in the Intel ARK database - google for the CPU model name, i.e.

https://ark.intel.com/content/www/us/en/ark/products/88196/intel-core-i7-6700-processor-8m-cache-up-to-4-00-ghz.html

Find current frequency settings:

root@daq01:~# cpupower frequency-info
analyzing CPU 0:
  driver: intel_pstate
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency:  Cannot determine or is not supported.
  hardware limits: 800 MHz - 4.00 GHz
  available cpufreq governors: performance powersave
  current policy: frequency should be within 800 MHz and 4.00 GHz.
                  The governor "powersave" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 2.72 GHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
root@daq01:~#

Note the following:
- current governor is "powersave"
- "performance" governor is available
- "boost state support" is supported and active.
Confirm CPU frequency governor:

root@daq01:~# cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
root@daq01:~#

Change governor to "performance":

root@daq01:~# cpupower frequency-set --governor performance
Setting cpu: 0
Setting cpu: 1
Setting cpu: 2
Setting cpu: 3
Setting cpu: 4
Setting cpu: 5
Setting cpu: 6
Setting cpu: 7
root@daq01:~# cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
performance
performance
performance
performance
performance
performance
performance
performance
root@daq01:~# cpupower frequency-info
analyzing CPU 0:
  driver: intel_pstate
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency:  Cannot determine or is not supported.
  hardware limits: 800 MHz - 4.00 GHz
  available cpufreq governors: performance powersave
  current policy: frequency should be within 800 MHz and 4.00 GHz.
                  The governor "performance" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 3.93 GHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes

monitor CPU frequency:

root@daq01:~# cpupower monitor
    | Nehalem                   || Mperf              || Idle_Stats                                     
 CPU| C3   | C6   | PC3  | PC6   || C0   | Cx   | Freq  || POLL | C1   | C1E  | C3   | C6   | C7s  | C8    
   0|  0.00|  0.00|  0.00|  0.00|| 88.80| 11.20|  3973||  0.00|  0.00|  0.01|  0.02|  0.31|  0.00|  4.25
   4|  0.00|  0.00|  0.00|  0.00||  4.70| 95.30|  3945||  0.00|  0.00|  0.00|  0.00|  0.00|  0.00| 95.03
   1|  0.73|  3.70|  0.00|  0.00||  4.52| 95.48|  3864||  0.00|  0.01|  1.19|  0.44|  2.82|  0.00| 90.23
   5|  0.73|  3.70|  0.00|  0.00||  0.37| 99.63|  3807||  0.00|  0.00|  0.03|  0.09|  1.70|  0.00| 97.64
   2|  2.28| 12.86|  0.00|  0.00||  1.41| 98.59|  3829||  0.00|  0.86|  3.17|  0.46|  7.70|  0.00| 85.87
   6|  2.28| 12.86|  0.00|  0.00||  2.88| 97.12|  3856||  0.00|  0.11|  4.56|  2.15| 10.31|  0.00| 78.99
   3|  1.33|  4.81|  0.00|  0.00||  0.99| 99.01|  3804||  0.00|  0.49|  0.79|  0.01|  1.03|  0.00| 96.12
   7|  1.34|  4.81|  0.00|  0.00||  1.26| 98.74|  3818||  0.00|  0.01|  2.32|  0.47|  5.02|  0.00| 90.06
root@daq01:~#

check that the CPU is not overheating:

root@daq01:~# sensors
coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +51.0°C  (high = +84.0°C, crit = +100.0°C)
Core 0:        +51.0°C  (high = +84.0°C, crit = +100.0°C)
Core 1:        +38.0°C  (high = +84.0°C, crit = +100.0°C)
Core 2:        +34.0°C  (high = +84.0°C, crit = +100.0°C)
Core 3:        +32.0°C  (high = +84.0°C, crit = +100.0°C)

congratulations, we are running at 4 GHz now!

Setup ubuntu as gateway to private network

Steps to do

!!! UPDATED 16feb2024 Ubuntu-22.04.03 !!!

assign network numbers to the private network, i.e. 192.168.1.x, 192.168.2.x, etc
(on the gateway machine, each private network interface has to have a different network number)
(each network interface can have multiple networks attached, via VLANs or via eth0:0, eth0:1 constructs)
assign IP addresses on the private network, save them in /etc/hosts i.e. "hvps 192.168.1.10"
(for simplicity, assign 192.168.1.1 to the gateway machine itself)
(IP addresses 192.168.1.0 and 192.168.1.255 are "special", do not use them)
setup DNS server (dnsmasq) to serve contents of /etc/hosts via DNS (otherwise, many programs will see inconsistent name to IP address mapping)
setup DHCP server (dnsmasq) to give out the IP addresses
setup TFTP server (dnsmasq), pxelinux and NFS for diskless booting
setup time server (chronyd) to provide common time to all devices
setup NAT so machines on private network can access the internet (to get OS updates, etc)
setup NIS and NFS so machines on the private network can use common home directories
setup rsync backup of machines on the private network

setup hosts

edit /etc/hosts

192.168.1.101 dsfe01
... and so forth

setup dns and dhcp

!!! updated 16feb2024 for Ubuntu 22.04.3 !!!

!!! note: stock systemd-resolved remains, is configured to forward queries to dnsmasq, configured to forward queries to TRIUMF DNS !!!

!!! note: per authors of systemd, bare hostnames are not permitted, a DNS domain name must always be used. DNS domain name "dsdaq" is used in this example !!!

apt install dnsmasq
ensure dnsmasq starts after all interfaces are up (Ubuntu-22)

mkdir /etc/systemd/system/dnsmasq.service.d
echo -e "[Unit]\nAfter=network-online.target\n" > /etc/systemd/system/dnsmasq.service.d/local.conf

edit /etc/dnsmasq.conf

# /etc/dnsmasq.conf
# DNS settings 
#port=0 # disable DNS function 
port=53 # enable DNS function 
bind-interfaces # do not collide with systemd-resolved, we use 127.0.0.1:53, they use 127.0.0.53:53 
domain-needed 
bogus-priv 
no-resolv 
#log-queries # log DNS quesries 
 
# TRIUMF DNS settings 
 
server=142.90.100.19 
expand-hosts 
domain=dsdaq 
local=/dsdaq/ 
localmx # do not forward MX queries to TRIUMF 

# DHCP settings 
interface=enp1s0f0 # VX network 192.168.0.x 
#interface=missing  # FEP and TSP network 192.168.1.x 
interface=enp1s0f1 # controls network 192.168.2.x 
#dhcp-range=192.168.1.50,192.168.1.150,infinite 
dhcp-range=192.168.0.0,static 
dhcp-range=192.168.2.0,static 
log-dhcp # log DHCP queries 
#quiet-dhcp 
dhcp-ignore=tag:!known 
#dhcp-boot=pxelinux.0 
 
dhcp-option=option:dns-server,192.168.0.248 
dhcp-option=option:ntp-server,192.168.0.248 
 
# TFTP settings 
 
enable-tftp 
tftp-root=/tftpboot

#mkdir /tftpboot ### per tftp-root (if no ZFS)
zfs create -o mountpoint=/tftpboot rpool/tftpboot ### (if root is ZFS)
create resolved-dsdaq.conf with main IP address of dnsmasq

[Resolve]
DNS=192.168.0.248
Domains=dsdaq triumf.ca

mkdir -p /etc/systemd/resolved.conf.d/
/bin/rm -f /etc/systemd/resolved.conf.d/*.conf
cp resolved-dsdaq.conf /etc/systemd/resolved.conf.d/
systemctl stop systemd-resolved.service
systemctl disable systemd-resolved.service
systemctl enable dnsmasq
systemctl restart dnsmasq
try to "ping" or "host" some names from /etc/hosts, it should work
try to ping daq00, daq00.triumf.ca, all should work
resolved-dsdaq.conf goes into /etc/systemd/resolved.conf.d/ of all machines on the private network
if not using systemd-resolved, edit /etc/resolv.conf

setup chronyd

enable ntp server:
disable systemd-timesyncd, configure and enable chronyd per instructions above
create dsdaq.conf

# chrony config for dsdaq server

#allow 192.168.0.0
#allow 192.168.1.0
#allow 192.168.2.0
allow all

# end

cp dsdaq.conf /etc/chrony/conf.d/
systemctl restart chronyd
chronyc tracking ### wait until time is synchronized (a few seconds)
create dsdaq.sources # use hostname or IP address of chronyd server

# Put this file in /etc/chrony/sources.d
# systemctl restart chrony
# chronyc sources
# chronyc tracking
server dsdaqgw iburst prefer
# end

dsdaq.sources goes to /etc/chrony/sources.d of all machines on the private network

setup diskless network booting

setup pxelinux for legacy pxe boot

add bits in dnsmasq.conf

dhcp-host=ac:1f:6b:9e:7f:4a,dsfe01,infinite
dhcp-boot=pxelinux.0
dhcp-option=17,"192.168.0.251:/nfsroot/%s,vers=3"

setup pxelinux for Ubuntu-18

cd ~
wget https://www.kernel.org/pub/linux/utils/boot/syslinux/4.xx/syslinux-4.03.tar.bz2
tar xjvf syslinux-4.03.tar.bz2
cd syslinux-4.03
cp -pv ./core/pxelinux.0 ./com32/hdt/hdt.c32 ./memdisk/memdisk ./com32/menu/menu.c32 /zssd/tftpboot/

cd /zssd/tftpboot

wget http://ladd00.triumf.ca/tftpboot/memtest86+-4.20.iso.zip
wget http://ladd00.triumf.ca/tftpboot/memtest86+-5.01.iso.gz
wget http://ladd00.triumf.ca/tftpboot/modules.alias
wget http://ladd00.triumf.ca/tftpboot/modules.pcimap
wget http://ladd00.triumf.ca/tftpboot/pci.ids

mkdir pxelinux.cfg
emacs -nw pxelinux.cfg/default

default menu.c32
prompt 0

menu title Welcome to the DSVSLICE PXE boot menu

timeout 50

label hdt
  kernel hdt.c32

label memtest86+-5.01 
  kernel memdisk iso initrd=memtest86+-5.01.iso.gz 

label memtest86+-4.20
  kernel memdisk iso initrd=memtest86+-4.20.iso.zip

label vmlinuz-5.3.0-26-generic
  menu default
  kernel vmlinuz-5.3.0-26-generic
  append initrd=initrd.img-5.3.0-26-generic boot=nfs root=/dev/nfs netboot=nfs nfsroot=192.168.1.1:/zssd/nfsroot/dsfe01 toram ip=dhcp panic=60 BOOTIF=enp1s0f0

#end

setup pxelinux for efi pxe boot

https://c-nergy.be/blog/?p=13808
add dnsmasq.conf bits. note: root-path does not actually work, it is hardwired pxelinux.cfg/default file.

# uefi pxe

dhcp-boot=tag:uefipxe,uefi/syslinux.efi
dhcp-option-force=tag:fe01,option:root-path,192.168.0.248:/nfsroot/fe01

# VX network 192.168.0.x

dhcp-host=40:a6:b7:c1:d9:c5,fe01,infinite,set:uefipxe,set:fe01

apt install syslinux pxelinux syslinux-common syslinux-efi syslinux-utils

mkdir /tftpboot/uefi
cp /usr/lib/SYSLINUX.EFI/efi64/syslinux.efi /tftpboot/uefi/
cp /usr/lib/syslinux/modules/efi64/ldlinux.e64 /tftpboot/uefi/
cp /usr/lib/syslinux/modules/efi64/menu.c32 /tftpboot/uefi/
cp /usr/lib/syslinux/modules/efi64/hdt.c32 /tftpboot/uefi/
cp /usr/lib/syslinux/modules/efi64/libutil.c32 /tftpboot/uefi/
cp /usr/lib/syslinux/modules/efi64/libmenu.c32 /tftpboot/uefi/
cp /usr/lib/syslinux/modules/efi64/libcom32.c32 /tftpboot/uefi/
cp /usr/lib/syslinux/modules/efi64/libgpl.c32 /tftpboot/uefi/

try to boot, it should bomb with "cannot load pxelinux.cfg/default"
mkdir /tftpboot/uefi/pxelinux.cfg
create /tftpboot/uefi/pxelinux.cfg/default, note nfsroot path is hardwired, note "http:" is used to load vmlinuz and initrd files (because tftp is super slow)

default menu.c32
prompt 0

menu title Welcome to the DSDAQGW UEFI PXE boot menu

timeout 50

label vmlinuz-6.5.0-17-generic
  kernel http://192.168.0.248:8088/uefi/vmlinuz-6.5.0-17-generic
  append initrd=http://192.168.0.248:8088/uefi/initrd.img-6.5.0-17-generic boot=nfs root=/dev/nfs netboot=nfs nfsroot=auto rw ip=dhcp panic=60

# append initrd=http://192.168.0.248:8088/uefi/initrd.img-6.5.0-17-generic boot=nfs root=/dev/nfs netboot=nfs nfsroot=192.168.0.248:/nfsroot/fe01 rw ip=dhcp panic=60

#  append initrd=initrd.img-6.5.0-17-generic boot=nfs root=/dev/nfs netboot=nfs nfsroot=192.168.0.248:/nfsroot/fe01 rw ip=dhcp panic=60
#  append initrd=initrd.img-6.5.0-17-generic boot=nfs root=/dev/nfs netboot=nfs nfsroot=auto ip=dhcp rw panic=60

#end

try to boot, it will bomb with "cannot load http://...."
install mini_httpd on port 8088, see https://acme.com/software/mini_httpd/

apt install mini-httpd
emacs -nw /etc/default/mini-httpd # set "START=1"
emacs -nw /etc/mini-httpd.conf # set "host=192.168.0.248", "port=8088", "data_dir=/tftpboot"
mkdir /etc/systemd/system/mini-httpd.service.d
echo -e "[Unit]\nAfter=network-online.target\n" > /etc/systemd/system/mini-httpd.service.d/local.conf
systemctl enable mini-httpd
systemctl restart mini-httpd
systemctl status mini-httpd
wget http://192.168.0.248:8088/uefi/syslinux.efi
tail -100 /var/log/mini_httpd.log

fix initramfs bug for "nfsroot=auto", otherwise, "nfsroot=" has to be different for each machine and you have to have separate pxelinux config files for each machine
- emacs -nw /usr/lib/initramfs-tools/etc/dhcp/dhclient-enter-hooks.d/config
- add "echo ROOTPATH=..." if it is missing (Ubuntu LTS 22.04)

                echo "ROOTSERVER='${new_routers%% *}'" 
                echo "ROOTPATH='$new_root_path'" 
                echo "HOSTNAME='$new_host_name'"

- regenerate initramfs (be careful you generate it for the right kernel!)
- see https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/2054482

mkinitramfs 6.5.0-18-generic

copy linux kernel and initrd

cp /boot/vmlinuz-6.5.0-18-generic /tftpboot/uefi/
cp /boot/initrd.img-6.5.0-18-generic /tftpboot/uefi/
chmod a+r /tftpboot/uefi/*

try to boot, should bomb with messages about "trying to mount root filesystem"
tail /var/log/syslog

Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 available DHCP subnet: 192.168.0.0/255.255.255.0
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 vendor class: PXEClient:Arch:00007:UNDI:003016
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 DHCPDISCOVER(enp1s0f0) 40:a6:b7:c1:d9:c5 
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 tags: uefipxe, fe01, known, enp1s0f0
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 DHCPOFFER(enp1s0f0) 192.168.0.110 40:a6:b7:c1:d9:c5 
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 1:netmask, 2:time-offset, 3:router, 4, 5, 
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 6:dns-server, 12:hostname, 13:boot-file-size, 
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 15:domain-name, 17:root-path, 18:extension-path, 
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 22:max-datagram-reassembly, 23:default-ttl, 
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 28:broadcast, 40:nis-domain, 41:nis-server, 
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 42:ntp-server, 43:vendor-encap, 50:requested-address, 
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 51:lease-time, 54:server-identifier, 58:T1, 
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 59:T2, 60:vendor-class, 66:tftp-server, 67:bootfile-name, 
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 97:client-machine-id, 128, 129, 130, 131, 
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 132, 133, 134, 135
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 next server: 192.168.0.248
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 broadcast response
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  1 option: 53 message-type  2
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option: 54 server-identifier  192.168.0.248
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option: 51 lease-time  infinite
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size: 18 option: 67 bootfile-name  uefi/syslinux.efi
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option:  1 netmask  255.255.255.0
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option: 28 broadcast  192.168.0.255
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option:  3 router  192.168.0.248
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  5 option: 15 domain-name  dsdaq
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option: 12 hostname  fe01
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size: 27 option: 17 root-path  192.168.0.248:/nfsroot/fe01
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option: 42 ntp-server  192.168.0.248
Feb 16 20:43:02 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option:  6 dns-server  192.168.0.248
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 available DHCP subnet: 192.168.0.0/255.255.255.0
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 vendor class: PXEClient:Arch:00007:UNDI:003016
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 DHCPREQUEST(enp1s0f0) 192.168.0.110 40:a6:b7:c1:d9:c5 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 tags: uefipxe, fe01, known, enp1s0f0
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 DHCPACK(enp1s0f0) 192.168.0.110 40:a6:b7:c1:d9:c5 fe01
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 1:netmask, 2:time-offset, 3:router, 4, 5, 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 6:dns-server, 12:hostname, 13:boot-file-size, 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 15:domain-name, 17:root-path, 18:extension-path, 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 22:max-datagram-reassembly, 23:default-ttl, 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 28:broadcast, 40:nis-domain, 41:nis-server, 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 42:ntp-server, 43:vendor-encap, 50:requested-address, 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 51:lease-time, 54:server-identifier, 58:T1, 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 59:T2, 60:vendor-class, 66:tftp-server, 67:bootfile-name, 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 97:client-machine-id, 128, 129, 130, 131, 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 requested options: 132, 133, 134, 135
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 next server: 192.168.0.248
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 broadcast response
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  1 option: 53 message-type  5
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option: 54 server-identifier  192.168.0.248
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option: 51 lease-time  infinite
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size: 18 option: 67 bootfile-name  uefi/syslinux.efi
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option:  1 netmask  255.255.255.0
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option: 28 broadcast  192.168.0.255
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option:  3 router  192.168.0.248
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  5 option: 15 domain-name  dsdaq
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option: 12 hostname  fe01
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size: 27 option: 17 root-path  192.168.0.248:/nfsroot/fe01
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option: 42 ntp-server  192.168.0.248
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065885 sent size:  4 option:  6 dns-server  192.168.0.248
Feb 16 20:43:05 dsdaqgw dnsmasq-tftp[3629416]: error 8 User aborted the transfer received from 192.168.0.110
Feb 16 20:43:05 dsdaqgw dnsmasq-tftp[3629416]: sent /tftpboot/uefi/syslinux.efi to 192.168.0.110
Feb 16 20:43:05 dsdaqgw dnsmasq-tftp[3629416]: sent /tftpboot/uefi/syslinux.efi to 192.168.0.110
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 available DHCP subnet: 192.168.0.0/255.255.255.0
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 DHCPDISCOVER(enp1s0f0) 40:a6:b7:c1:d9:c5 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 tags: uefipxe, fe01, known, enp1s0f0
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 DHCPOFFER(enp1s0f0) 192.168.0.110 40:a6:b7:c1:d9:c5 
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 requested options: 1:netmask, 3:router, 6:dns-server
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 bootfile name: uefi/syslinux.efi
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 next server: 192.168.0.248
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 broadcast response
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  1 option: 53 message-type  2
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option: 54 server-identifier  192.168.0.248
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option: 51 lease-time  infinite
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option:  1 netmask  255.255.255.0
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option: 28 broadcast  192.168.0.255
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option:  3 router  192.168.0.248
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size: 27 option: 17 root-path  192.168.0.248:/nfsroot/fe01
Feb 16 20:43:05 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option:  6 dns-server  192.168.0.248
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 available DHCP subnet: 192.168.0.0/255.255.255.0
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 DHCPREQUEST(enp1s0f0) 192.168.0.110 40:a6:b7:c1:d9:c5 
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 tags: uefipxe, fe01, known, enp1s0f0
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 DHCPACK(enp1s0f0) 192.168.0.110 40:a6:b7:c1:d9:c5 fe01
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 requested options: 1:netmask, 3:router, 6:dns-server
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 bootfile name: uefi/syslinux.efi
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 next server: 192.168.0.248
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 broadcast response
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  1 option: 53 message-type  5
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option: 54 server-identifier  192.168.0.248
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option: 51 lease-time  infinite
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option:  1 netmask  255.255.255.0
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option: 28 broadcast  192.168.0.255
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option:  3 router  192.168.0.248
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size: 27 option: 17 root-path  192.168.0.248:/nfsroot/fe01
Feb 16 20:43:09 dsdaqgw dnsmasq-dhcp[3629416]: 2348065887 sent size:  4 option:  6 dns-server  192.168.0.248
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: sent /tftpboot/uefi/ldlinux.e64 to 192.168.0.110
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: file /tftpboot/uefi/pxelinux.cfg/01-40-a6-b7-c1-d9-c5 not found
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: file /tftpboot/uefi/pxelinux.cfg/C0A8006E not found
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: file /tftpboot/uefi/pxelinux.cfg/C0A8006 not found
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: file /tftpboot/uefi/pxelinux.cfg/C0A800 not found
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: file /tftpboot/uefi/pxelinux.cfg/C0A80 not found
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: file /tftpboot/uefi/pxelinux.cfg/C0A8 not found
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: file /tftpboot/uefi/pxelinux.cfg/C0A not found
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: file /tftpboot/uefi/pxelinux.cfg/C0 not found
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: file /tftpboot/uefi/pxelinux.cfg/C not found
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: sent /tftpboot/uefi/pxelinux.cfg/default to 192.168.0.110
Feb 16 20:43:09 dsdaqgw dnsmasq-tftp[3629416]: sent /tftpboot/uefi/menu.c32 to 192.168.0.110
Feb 16 20:43:10 dsdaqgw dnsmasq-tftp[3629416]: sent /tftpboot/uefi/libutil.c32 to 192.168.0.110
Feb 16 20:43:10 dsdaqgw dnsmasq-tftp[3629416]: sent /tftpboot/uefi/pxelinux.cfg/default to 192.168.0.110
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 available DHCP subnet: 192.168.0.0/255.255.255.0
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 client provides name: dsdaqgw.triumf.ca
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 DHCPDISCOVER(enp1s0f0) 40:a6:b7:c1:d9:c5 
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 tags: uefipxe, fe01, known, enp1s0f0
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 DHCPOFFER(enp1s0f0) 192.168.0.110 40:a6:b7:c1:d9:c5 
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 requested options: 1:netmask, 28:broadcast, 2:time-offset, 3:router, 
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 requested options: 15:domain-name, 6:dns-server, 119:domain-search, 
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 requested options: 12:hostname, 44:netbios-ns, 47:netbios-scope, 
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 requested options: 26:mtu, 121:classless-static-route, 42:ntp-server
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 bootfile name: uefi/syslinux.efi
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 next server: 192.168.0.248
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  1 option: 53 message-type  2
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option: 54 server-identifier  192.168.0.248
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option: 51 lease-time  infinite
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option:  1 netmask  255.255.255.0
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option: 28 broadcast  192.168.0.255
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option:  3 router  192.168.0.248
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  5 option: 15 domain-name  dsdaq
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size: 27 option: 17 root-path  192.168.0.248:/nfsroot/fe01
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option: 42 ntp-server  192.168.0.248
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option:  6 dns-server  192.168.0.248
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 available DHCP subnet: 192.168.0.0/255.255.255.0
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 client provides name: dsdaqgw.triumf.ca
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 DHCPREQUEST(enp1s0f0) 192.168.0.110 40:a6:b7:c1:d9:c5 
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 tags: uefipxe, fe01, known, enp1s0f0
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 DHCPACK(enp1s0f0) 192.168.0.110 40:a6:b7:c1:d9:c5 fe01
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 requested options: 1:netmask, 28:broadcast, 2:time-offset, 3:router, 
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 requested options: 15:domain-name, 6:dns-server, 119:domain-search, 
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 requested options: 12:hostname, 44:netbios-ns, 47:netbios-scope, 
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 requested options: 26:mtu, 121:classless-static-route, 42:ntp-server
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 bootfile name: uefi/syslinux.efi
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 next server: 192.168.0.248
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  1 option: 53 message-type  5
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option: 54 server-identifier  192.168.0.248
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option: 51 lease-time  infinite
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option:  1 netmask  255.255.255.0
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option: 28 broadcast  192.168.0.255
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option:  3 router  192.168.0.248
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  5 option: 15 domain-name  dsdaq
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option: 12 hostname  fe01
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size: 27 option: 17 root-path  192.168.0.248:/nfsroot/fe01
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option: 42 ntp-server  192.168.0.248
Feb 16 20:44:54 dsdaqgw dnsmasq-dhcp[3629416]: 3693523458 sent size:  4 option:  6 dns-server  192.168.0.248
Feb 16 20:44:54 dsdaqgw rpc.mountd[3350210]: authenticated mount request from 192.168.0.110:981 for /nfsroot/fe01 (/nfsroot/fe01)
Feb 16 20:45:07 dsdaqgw rpc.mountd[3350210]: authenticated unmount request from 192.168.0.110:859 for /nfsroot/fe01/tmp/autoDY4k5u (/nfsroot/fe01)

tail /var/log/mini_httpd.log

192.168.0.110 - - [16/Feb/2024:20:43:15 -0800] "GET /uefi/vmlinuz-6.5.0-17-generic HTTP/1.0" 200 14227944 "" "Syslinux/6.04"
192.168.0.110 - - [16/Feb/2024:20:43:24 -0800] "GET /uefi/initrd.img-6.5.0-17-generic HTTP/1.0" 200 137824833 "" "Syslinux/6.04"

setup efi http boot

https://documentation.suse.com/sles/15-SP2/html/SLES-all/cha-deployment-prep-uefi-httpboot.html

setup linux kernel

copy the kernel files

cd /boot
rsync -av config* initrd* System.map* vmlinuz* /tftpboot/

cd /tftpboot
chmod a+r *

setup nfs

apt-get install nfs-kernel-server
emacs -nw /etc/exports

/nfsroot/dsfe01 dsfe01(rw,no_root_squash,async,no_subtree_check)

enable services

systemctl enable nfs-server
systemctl enable nfs-mountd
systemctl enable nfs-idmapd
systemctl restart nfs-server
systemctl restart nfs-mountd
systemctl restart nfs-idmapd

after editing /etc/exports, run

exportfs -av

setup userland

!!! ubuntu-18 version !!!

zfs create rpool/nfsroot
zfs set dedup=verify rpool/nfsroot ### enable deduplication to save disk space because most linux images have mostly identical files
clone ubuntu

mkdir /nfsroot/dsfe01
cd /
rsync -avx . /nfsroot/dsfe01

edit config files:
cd /nfsroot/dsfe01
emacs -nw etc/hostname ### change to dsfe01
emacs -nw etc/mailname ### change to dsfe01
emacs -nw etc/yp.conf ### change daq00.triumf.ca to musr00.triumf.ca
emacs -nw etc/defaultdomain ### change to MUSR-NIS
cp -pvf ../lxcpet-SL610/etc/ssh/*key* etc/ssh/ ### preserve the ssh keys
emacs -nw opt/gonodeinfo/gonodeinfo.conf ### update information
emacs -nw root/.ssh/authorized_keys ### update root ssh keys
emacs -nw etc/fstab ### add this

192.168.1.1:/nfsroot/dsfe01 / nfs defaults,nolock 0 0

emacs -nw etc/chrony/chrony.conf
- comment-out all "pool" and "server" entries
- add entry "server 192.168.1.1 iburst"

After dsfe01 is booted:

disable services:

systemctl disable apache2
systemctl disable dnsmasq
systemctl disable zfs-import-cache

To setup additional machines, clone dsfe01 instead of cloning the gateway machine

Allow manpages to be viewed

If / is mounted over NFS, man will report a permission error. Fix it with:

ln -s /etc/apparmor.d/usr.bin.man /etc/apparmor.d/disable/
apparmor_parser -R /etc/apparmor.d/usr.bin.man

setup shared home directory

on the gateway machine

define netgroups
emacs -nw /etc/netgroup

dsfe (dsfe01,,) (dsfe02,,)

emacs -nw /etc/nsswitch.conf ### edit the netgroup line to read:

netgroup: files

export the home directories:
emacs -nw /etc/exports ### add this:

/zssd/home1 @dsfe(rw,no_root_squash,async,no_subtree_check)

exportfs -rc

on the frontend machine

mkdir /home
emacs -nw /etc/fstab ### add this:

192.168.1.1:/zssd/home1 /home nfs defaults 0 0

mount -a

setup NAT

NAT allows machines on the private network to connect to the internet: https://en.wikipedia.org/wiki/Network_address_translation

In these examples:

replace "eno1" with name of the outgoing interface (the one connected to the TRIUMF network).
replace "enp11s0" with name of the private network interface (192.168.1.x network)

emacs -nw /etc/rc.local ### add this:

# /etc/rc.local

# enable NAT

/sbin/iptables -t nat -A POSTROUTING -o eno1 -j MASQUERADE
iptables -L -v

# uncomment following lines if machine has prohibitive FORWARD rules:
#/sbin/iptables -I FORWARD -i eno1 -o enp11s0 -m state --state RELATED,ESTABLISHED -j ACCEPT
#/sbin/iptables -I FORWARD -i enp11s0 -o eno1 -j ACCEPT
#iptables -L -v

iptables -L -v
sysctl -w net.ipv4.ip_forward=1
#sysctl -a | grep forward

sh /etc/firewall-rfc1918.sh

# end

emacs -nw /etc/firewall-rfc1918.sh

# firewall-rfc1918.sh

# prevent RFC1918 private network IP addresses from
# going in and out from our uplink.

ETH=eno1

iptables -F in-rfc1918
iptables -N in-rfc1918
iptables -A in-rfc1918 --dst 10.0.0.0/8      -j REJECT
iptables -A in-rfc1918 --dst 172.16.0.0/12   -j REJECT
iptables -A in-rfc1918 --dst 192.168.0.0/16  -j REJECT

iptables -D INPUT -j in-rfc1918 -i $ETH
iptables -D INPUT -j in-rfc1918 -i $ETH
iptables -I INPUT -j in-rfc1918 -i $ETH

iptables -F out-rfc1918
iptables -N out-rfc1918
iptables -A out-rfc1918 --dst 10.0.0.0/8      -j REJECT
iptables -A out-rfc1918 --dst 172.16.0.0/12   -j REJECT
iptables -A out-rfc1918 --dst 192.168.0.0/16  -j REJECT

iptables -D OUTPUT -j out-rfc1918 -o $ETH
iptables -D OUTPUT -j out-rfc1918 -o $ETH
iptables -I OUTPUT -j out-rfc1918 -o $ETH

iptables -D FORWARD -j out-rfc1918 -o $ETH 
iptables -D FORWARD -j out-rfc1918 -o $ETH 
iptables -I FORWARD -j out-rfc1918 -o $ETH 

# allow TRIUMF-SECURE network

iptables -I in-rfc1918 -s 10.90.0.0/255.255.0.0 -j ACCEPT 
iptables -I out-rfc1918 -d 10.90.0.0/255.255.0.0 -j ACCEPT 

# show configuration

iptables -L -v

#end

KVM

apt install cpu-checker

root@daq13:~# kvm-ok 
INFO: /dev/kvm exists
KVM acceleration can be used
root@daq13:~# 

(if not, shutdown, go into BIOS settings, enable CPU virtualization)

apt install virtinst ### will install many packages
apt install libvirt-clients libvirt-daemon-system-systemd libvirt-daemon qemu qemu-kvm libvirt-daemon-system virtinst bridge-utils

root@daq13:/home1/wheel# virsh list --all
 Id   Name           State
------------------------------
 1    ubuntu-guest   running

apt install virt-manager

virt-install --name ubuntu-guest --os-variant ubuntu20.04 --vcpus 2 --ram 2048 --location /daq/daqstore/olchansk/linux/Ubuntu/ubuntu-20.04.3-desktop-amd64.iso --network bridge=virbr0,model=virtio --graphics none --extra-args='console=ttyS0,115200n8 serial'

virtual machine will start, boot, etc
to get out of it, CTRL + Shift followed by ]

ssh wheel@daq13
virt-manager

run virt-install again, omit "--graphics none", open graphics console from virt-manager, it booted into ubuntu installer desktop

virt-install --name test10 --os-variant centos6.10 --vcpus 2 --ram 2048 --import --filesystem /kvm_ladd00,/ --network bridge=virbr0,model=virtio --boot kernel=/kvm_ladd00/boot/vmlinuz-2.6.32-754.35.1.el6.x86_64,initrd=/kvm_ladd00/boot/initramfs-2.6.32-754.35.1.el6.x86_64.img,kernel_args="root=/dev/sda console=ttyS0,115200n8 serial" --graphics none

virt-install --name test14 --os-variant centos6.10 --vcpus 2 --ram 2048 --import --disk /tmp/xxx/ladd00.img,bus=sata --network bridge=virbr0,model=virtio --boot kernel=/kvm_ladd00/boot/vmlinuz-2.6.32-754.35.1.el6.x86_64,initrd=/kvm_ladd00/boot/initramfs-2.6.32-754.35.1.el6.x86_64.img,kernel_args="root=/dev/sda console=ttyS0,115200n8 serial rdshell" --graphics none --check path_in_use=off

build image

dd if=/dev/zero of=/tmp/xxx/ladd00.img bs=1024M count=20
mkfs.ext3 /tmp/xxx/ladd00.img ### ext4 fails to mount by SL6 kernel, "unknown ext4 options"
cd /kvm_ladd00/
mount -o loop /tmp/xxx/ladd00.img /mnt/tmp
rsync -av . /mnt/tmp/ --delete
umount /mnt/tmp

on the guest, configure network: /etc/rc.local

#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local

ifconfig eth2 192.168.122.2
route add -net 0.0.0.0 gw 192.168.122.1
ifconfig -a
netstat -rn

# end

ARM cross-compiler

NOTE!!!

THIS IS NOT AN AARCH64 (arm64) CROSSCOMPILER!