Upgraded some 10 routers last night without reboot. After a few hours, four of the units failed with one or more services stopped.
Found following in the system/general log
2021-09-22T23:46:58 configctl[19087] event @ 1632347211.39 msg:
.
approx 7000 identical lines within 1 second
.
2021-09-22T23:46:58 configctl[19087] event @ 1632347211.39 msg:
2021-09-22T23:46:58 kernel pid 34492 (unbound), jid 0, uid 59, was killed: out of swap space
Unbound was stopped in three units, unspecified python process in one and syslog-ng in one.
Just restarted the failed processes and everlything looks good after 1 hour.
On my box, a configctl job was at 100% the whole time until reboot. Seems that a reboot is needed for this update.
I updated to 21.7.3 yesterday. Same here, suricata and unbound were killed with lots of out-of-swapspace messsages. I could manually restart them.
Will try the reboot now.
Ben