[MM3-users] Re: log rotation for bounce.log

On 1/22/24 14:50, Quanah Gibson-Mount wrote:

I noticed that our smtp.log and bounce.log files haven't been rotated in years.  I see the reason for smtp.log not being rotated is due to <https://gitlab.com/mailman/mailman/-/issues/931>.  Does this same issue affect bounce.log or is it safe to rotate similar to mailman.log?

Rotating all the logs in Mailman's var/logs/ directory is appropriate. This is the logrotate script I use.

/opt/mailman/mm/var/logs/*.log {
     missingok
     sharedscripts
     su mailman mailman
     postrotate
         if [ -r /opt/mailman/mm/var/master.pid ]; then
             PID=`cat /opt/mailman/mm/var/master.pid`
             kill -s HUP $PID
         fi
         if [ -r /opt/mailman/mm/var/gunicorn.pid ]; then
             PID=`cat /opt/mailman/mm/var/gunicorn.pid`
             kill -s USR1 $PID
         fi
     endscript
}

You will still have the issue #931 in that the smtp.log will rotate, but as it says in that issue, the runners that write smtp.log directly will write to the new generation, but aiosmtpd continues to write to the older log until such time as mailman core is restarted. I'm not sure what will happen if mailman core is not restarted before the log aiosmtpd is writing to is rotated out of existence, but that could be an issue too.

You could avoid this by replacing

         if [ -r /opt/mailman/mm/var/master.pid ]; then
             PID=`cat /opt/mailman/mm/var/master.pid`
             kill -s HUP $PID
         fi

in the above postrotate script with

         if [ -r /opt/mailman/mm/var/master.pid ]; then
             sudo -u mailman /opt/mailman/mm/bin/mailman restart 
&>/dev/null || true
         fi

but there is a potential issue in that if Mailman is delivering list mail when the mailman restart command is issued, some recipients may receive duplicates.

-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan