Re: [HTCondor-users] Can we backup Central Manager's database and states?

[John M Knoeller <johnkn@xxxxxxxxxxx>]

The HTCondor central manager does not have a database,  The job queue does not reside there, it resides with the condor_schedd process, which we call the Access Point.   A HTCondor pool can have many Access Points and each will have their own job queue.  

You can find the file that holds the job queue by running

condor_config_val SPOOL JOB_QUEUE_LOG

on each Access Point to find the location of the local SPOOL directory and

the explicit location of the transaction log for the job queue (JOB_QUEUE_LOG).   If the configuration for JOB_QUEUE_LOG is not set, then the job queue log will be in the SPOOL directory. it is the file named

job_queue.log

You will want to back up the entire SPOOL directory to save the jobs and their associated temporary files.  you should do this while the condor_schedd process is not running.

To save the jobs, but not the files associated, you can back up just the job_queue.log file. 

-tj

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From: HTCondor-users <htcondor-users-bounces@xxxxxxxxxxx> on behalf of acraft@xxxxxxxxx <acraft@xxxxxxxxx>
Sent: Tuesday, November 16, 2021 1:17 PM
To: htcondor-users@xxxxxxxxxxx <htcondor-users@xxxxxxxxxxx>
Subject: [HTCondor-users] Can we backup Central Manager's database and states?

 

Hello,

I'm planning to use Docker containers to host a Central Manager (CM) service and I have some questions:

1. Does CM keep a database to store it's job queue to make it persistent?

2. If yes, what folders and files should I save to backup CM's database and states?

Thanks in advance!

Aaron