SSL certificate errors
At some sites you might get a SSL server certificate error during the git clone operation, like
error: SSL certificate problem, verify that the CA cert is OK. Details:
This indicates that you don't have the proper certificate authority (CA) files installed on your computer. Possible solutions:
- The easiest way out is to tell git to ignore the SSL verification with
git config --global http.sslVerify false
- Set the environment variable GIT_SSL_NO_VERIFY=true.
- But the best solution is to just actually install the correct certificate authority files.
There are some older analyzer programs included in MIDAS that use PAW/HBOOK. MIDAS will try to build these programs if you have the CERNLIB environment variable set. This may cause errors trying to build mana.cxx, like
gcc -Dextname -DHAVE_HBOOK -c -g -O2 -Wall -Wno-strict-aliasing -Wuninitialized -Iinclude -Idrivers -I../mxml -I./mscb -DHAVE_FTPLIB -D_LARGEFILE64_SOURCE -DHAVE_ROOT -pthread -m64 -I/usr/local/packages/root-5.32/include/root -DHAVE_ZLIB -DHAVE_MSCB -DOS_LINUX -fPIC -Wno-unused-function -o linux/lib/hmana.o src/mana.cxx src/mana.cxx: In function 'INT book_ntuples()': src/mana.cxx:791: error: invalid conversion from 'const void*' to 'void*'
Unless you care about this functionality, the easiest solution is to unset the environment variable CERNLIB before compiling.
How to recover from a corrupted ODB
- Stop your front-ends, mlogger, mhttpd, etc.
- Remove the shared memory associated to ODB buffer. Find the shared memory segment by doing
ls -l /dev/shm
then remove the segment that will be something like /dev/shm/*_test_ODB_SHM
- Move the old ODB
cd online mv .ODB.SHM .ODB.SHM.BAD
- Restart ODB with larger size
odbedit -s 100000000
- Reload the last saved ODB dump you have (see save and reload the ODB). These dumps are typically called something like 'online/history/*.xml'.
So from odbedit you do something like
odbedit> load history/run00071.xml
- OK, now your ODB should be fixed.