[systemd-devel] Antw: Re: Q: Implementing logrotate's postrotate with systemd

[Reindl Harald]

Am 11.06.19 um 15:00 schrieb Ulrich Windl:
>>>> Reindl Harald <h.reindl at thelounge.net> schrieb am 11.06.2019 um 14:30 in
> Nachricht <917331d8-845f-54d5-908c-e6c7d124a3c6 at thelounge.net>:
>>
>> Am 11.06.19 um 13:34 schrieb Ulrich Windl:
>>> I have a forking service (with a PID file) that can reopen the logfile after 
>> receiving SIGHUP. In the past I had implemented "rc{service} rotate" to send 
>> SIGHUP to the daemon as "postrotate" action. After converting (actually being 
>> converted ;-)) to systemd I dropped the LSB script, and wonder which command 
>> to use as "postrotate" action:
>>>
>>> Should I implement a oneshot service (using "systemctl start {service}") 
>> that does depend on the actual service and send a SIGHUP on start, or is 
>> there a more elegent solution?
>>
>> that's what reload is all about
>>
>> [harry at srv-rhsoft:/etc/systemd/system]$ cat named.service | grep Reload
>> ExecReload=/usr/bin/kill -HUP $MAINPID
> 
> The manual page says it's about "configuration reload". I was talking about logfile rotation (my service does not suport configuration reload (other than restart))

frankly it's nothing new or uncommon that services close and re-open
their logfiles by "reload" and that's really not systemd specific,
sysvinit had reload too

it's you turn what happens with "systemctl reload yourservice" becaus
ethere is no default action for that unless "ExecReload" is specified