Running logrotate on /var/log/proxmox-backup

[approximater]

So I've recently discovered an unplugged USB drive will cause PBS to spam IO errors to a log file until it fills the hard drive and borks itself so I figured I would adjust the logrotate settings to include a maxsize directive to logrotate, only I can't seem to find any PBS-specific files in /etc/logrotate.d/. Google's AI insists I could create a job for /var/log/proxmox-backup/tasks/*.log which I find dubious since none of the log files end in .log or even contain the string 'log'. I've seen other people claiming PBS rotates it's own logs but no mention on where to configure this or if it even uses logrotate to do it. For now I've added 'maxsize 100MB' and 'compress' to /etc/logrotate.conf will that be enough? On my system it takes about 39 hours to create a 20GB logfile that fills the log dataset so if logrotate checks every 24 hours I assume this will stave of future disasters.

 

[Impact]

[SOLVED] Post in thread 'Proxmox-backup logs'

Oct 19, 2021

we recently implmented a cleanup of old task logs https://git.proxmox.com/?p=proxmox-backup.git;a=commit;h=0e1edf19b1c3f4e68e1340b340a6c655846ce095
it's not currently packaged, so it may take a bit until you can update to it.

if you really cannot wait, you can manually delete task logs e.g. older than 90 days with

find /var/log/proxmox-backup/tasks -type f  -name 'UPID*' -mtime +90 -delete

(replace the '90' with a value you find appropriate)

if you do not give the '-delete' parameter it gives you a list of files that matched

note that it will no longer work to view...

• dcsapak

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[SOLVED] Post in thread 'Proxmox-backup logs'

May 2, 2022

Any other systems that cause big daemon.log files?

i'd check the content of the log to determine what it fills...

Could you build a command to manually force log rotation for PBS related logs?

we could do that, but there is (since recently) a config to set the (maximum) days to keep logs

proxmox-backup-manager node update --task-log-max-days N

it will keep at least N days of task logs (a bit more actually)

task log rotation for now is triggered daily at midnight
does that help you?

• dcsapak