maas.log on snapped version is not rotating

[Facundo Ciccioli]

Running maas's snapped version 2.9.0~rc3-9131-g.26dc68728, we noticed an extremely large maas.log file (12Gb at /var/snap/maas/common/log/maas.log).

There's no entry on logrotate.d for such a file, but given what I read on [1] (pretty old) I don't believe that file should even exist. Snaps apparently should rely on the journal for logging purposes.

Found this lines on /var/snap/maas/10666/syslog/rsyslog.conf:

    if $syslogtag contains "maas" then {
      *.* /var/snap/maas/common/log/maas.log
    } else {

[1] https://forum.snapcraft.io/t/best-practice-for-logging/1210

[Alexsander de Souza (alexsander-souza)]

Replacing supervisord with real snap services, which would send all logs to journal and avoid this issue, is in the roadmap.

[Jerzy Husakowski (jhusakowski)]

Improving MAAS log handling in snaps is a roadmap item, we'll mark this ticket as resolved once it's implemented (likely after 3.3). Afterwards, the operators will be able to configure log rotation themselves.

[Jeff Lane  (bladernr)]

Any love for this? Our own MAAS server has a snap and a maas log that is now over 1.5GB in size.