When installed, the Provisioner PXE Server initiates the following daily automated maintenance tasks:

•Database cleanup (at 12:05 a.m.)

•Database backup (at 1:05 a.m.)

•Provisioner PXE Server restart (at 3:05 a.m.) during which the Provisioner PXE Server is unavailable for a few seconds

 

The following instructions are intended for users with a working knowledge of cron and crontab settings and syntax:

 

## List cron
# crontab -l
PATH=/usr/bin:/bin:/usr/sbin:/sbin
 
## clean up LBMP postgres database at 5 minutes after midnight daily
5 0 * * * vacuumdb linminbmp -U postgres
 
## check for LBMP postgres database backup at five minutes after 1 AM daily
5 1 * * * /usr/local/linmin/lbmpPostgresBackup.sh 2>&1 > /usr/local/linmin/pgDBbkup/lbmpBkup.log
 
## restart LinMin provisioning services at 5 minutes after 3 AM daily
5 3 * * * /usr/local/linmin/linmin-services.sh restart 2>&1 > /usr/local/linmin/LBMPcronRestart.log
 
## dump cron to a file
# crontab -l > crontab_{uniquetag1}.txt
 
## copy cron dump file
# cp crontab_{uniquetag1}.txt crontab_{uniquetag2}.txt
 
## edit cron dump file and make changes
# nano crontab{uniquetag2}.txt
 
## implement changed cron dump file
# crontab -u root crontab{uniquetag2}.txt
 
## list changed crontab
# crontab -l
PATH=/usr/bin:/bin:/usr/sbin:/sbin

 

Note: retaining the two .txt files provides a record of the changes and an easy means to back out the changes.