Too many failed tasks in the Background tasks

Symptoms

There are old tasks in the “Monitoring and logs” - “Background tasks” section that ended more than 24 hours ago with the status “Error running task”.

Causes

PID files of failed tasks were not removed automatically.

Solution

To clear the list of background tasks from failed ones you have to delete their PID files.

PID files are stored in “/usr/local/mgr5/var/run/” in subdirectories named after their queue name. PID file name consists of a script name and a task identifier.

For example, task’s PID file from queue named “backup2” with the script name “backup2” and the identifier “isptest” will be stored in “/usr/local/mgr5/var/run/backup2/backup2.isptest”:

root@example:~# ls -la /usr/local/mgr5/var/run/backup2/
total 24 
drwxr-xr-x  2 root root 4096 Jun  5 06:01 .
drwxr-xr-x 24 root root 4096 Jun  5 22:59 ..
-rw-r-----  1 root root  240 Jun  5 03:02 backup2.isptest
-rw-r-----  1 root root  254 Jun  5 03:05 backup2.isqptestik.com
-rw-------  1 root root  263 May 22 09:01 backup2.manual_isptest
-rw-r-----  1 root root  229 Feb  8 02:42 backup2.www-root
-rw-r-----  1 root root    0 Jun  5 06:01 .state