[systemd-devel] Log output is incomplete or unavailable

[Reindl Harald]

Am 20.02.2017 um 22:00 schrieb Patrick B:
> I'm running Ubuntu 16.04.01 Server and just realised some log files are
> not being created.
>
> Such as:
>
>
>     /var/log/kern.log
>     /var/log/postgresql/postgresql.log


this is really not a upstream question- maybe your distribution just 
don#t install anytruing else than journald like Fedora does and then 
your are responsible at your own to install rsyslog and configure it proper

> service postgresql status
>
>     Warning: Journal has been rotated since unit was started. Log output
>     is incomplete or unavailable.
>
>
>     root at master01:/var/log# ls -la postgresql/postgresql-9.2-main.log
>
>     -rw-r--r-- 1 postgres postgres 0 Feb 20 20:12
>     postgresql/postgresql-9.2-main.log
>
>
> Thinks I've tried:
>
>   * the command journalctl --verify returns all PASS.
>   * systemctl restart systemd-journald.service <-- did not solve the
>     problem.

that might be a very bad idea - journald is one of that services which 
are not capable restarts (or at least where not so long ago since i 
stopped to do so on Fedora)

>   * /etc/systemd/journald.conf <-- all default

journald rotates - please look at the manpages

> Any ideas? I can't restart postgres process... It is a production server

you don't need to restar the service but you *really* should consult a 
Ubuntu forum because how your system is configured has not much to do 
with systemd upstream - maybe the service did not output anything to 
jouranl/stdout/stderr for a longer time and after some time "Journal has 
been rotated since unit was started" is just normal