[Samba] Issues with log rotation

[Viktor Trojanovic]

Thanks Louis! The bug issue thread was an interesting read. Like the OP,
I'm also using Ubuntu Minimal images for my LXD containers and for some not
entirely clear reason, the Ubuntu maintainers decided not to fix the bug
for the LTS Minimal Release. Luckily, the solution is rather simple, a
single word needs to be renamed in /etc/logrotate.conf, i.e. "su root
syslog" to "su root adm".

So, all solved, it seems!

On Wed, 1 Sept 2021 at 12:00, L.P.H. van Belle <belle at bazuin.nl> wrote:

> and read :
>
> https://roybongers.nl/2018/12/31/lxc-error-running-non-shared-postrotate-script-for-var-log-syslog-of-var-log-syslog/
>
>
> ;-)
>
> ------------------------------
> *Van:* Viktor Trojanovic [mailto:viktor at troja.ch]
> *Verzonden:* woensdag 1 september 2021 11:56
> *Aan:* L.P.H. van Belle
> *CC:* samba at lists.samba.org
> *Onderwerp:* Re: [Samba] Issues with log rotation
>
> Hi Louis,
>
> Thanks for the quick response.
>
> Yes, that's on Bionic. What's more, it's in a container (lxc, privileged,
> works fine otherwise).
>
> I just tried to run the command, it gives me back:
>
> root at DC1:~#  sudo logrotate -d /etc/logrotate.conf
> reading config file /etc/logrotate.conf
> error: /etc/logrotate.conf:7 unknown group 'syslog'
> removing last 0 log configs
>
> Clearly, something is misconfigured here (although I never touched it,
> that came as default). I'll try to figure out what and report back.
>
> Thanks for the hint Louis!
>
> Vic
>
> On Wed, 1 Sept 2021 at 11:21, L.P.H. van Belle via samba <
> samba at lists.samba.org> wrote:
>
>> Hai,
>>
>> This is on Bionic i think? That should not be a samba thing..
>> I had a look at my logrotate. Thats exactly the same as yours.
>> On my debian and ubuntu servers.
>>
>> Only, i dont have these 2 in my smb.conf,
>> > log level = 1
>> > max log size = 10000
>>
>> Only difference as far i can tell. Not that it "should" matter.
>> But i seen failing logrotates also, just not in samba.
>>
>> What to you see if you run :
>> logrotate -d /etc/logrotate.conf
>> Or
>> logrotate -d -f /etc/logrotate.conf
>> -d debug
>> -f force
>>
>>
>>
>> Greetz,
>>
>> Louis
>>
>>
>> > -----Oorspronkelijk bericht-----
>> > Van: samba [mailto:samba-bounces at lists.samba.org] Namens
>> > Viktor Trojanovic via samba
>> > Verzonden: woensdag 1 september 2021 11:06
>> > Aan: samba
>> > Onderwerp: [Samba] Issues with log rotation
>> >
>> > Hi,
>> >
>> > On one of my systems running Samba 4.10.18-Ubuntu (by Louis) logs in
>> > /var/log/samba are not being rotated which leads to the log
>> > folder getting
>> > too big and bringing down the system.
>> >
>> > I'm not sure what's going wrong here. In /etc/samba/smb.conf, I have
>> >
>> > log level = 1
>> > max log size = 10000
>> >
>> > I don't have any reference to the log file as I assume that's only
>> > necessary when deviating from the default. Clearly, log files in
>> > /var/log/samba are being generated even in the absence of this entry.
>> >
>> > On my Ubuntu system, there is further a logrotate entry for Samba in
>> > /etc/logrotate.d/samba with the following content:
>> >
>> > /var/log/samba/log.smbd {
>> >         weekly
>> >         missingok
>> >         rotate 7
>> >         postrotate
>> >                 [ ! -x /usr/bin/smbcontrol ] || [ ! -f
>> > /var/run/samba/smbd.pid ] || /usr/bin/smbcontrol smbd reload-config
>> >         endscript
>> >         compress
>> >         delaycompress
>> >         notifempty
>> > }
>> >
>> > /var/log/samba/log.nmbd {
>> >         weekly
>> >         missingok
>> >         rotate 7
>> >         postrotate
>> >                 [ ! -x /usr/bin/smbcontrol ] || [ ! -f
>> > /var/run/samba/nmbd.pid ] || /usr/bin/smbcontrol nmbd reload-config
>> >         endscript
>> >         compress
>> >         delaycompress
>> >         notifempty
>> > }
>> >
>> > /var/log/samba/log.samba {
>> >         weekly
>> >         missingok
>> >         rotate 7
>> >         postrotate
>> >                 if [ -d /run/systemd/system ] && command systemctl
>> > >/dev/null 2>&1 && systemctl is-active --quiet samba-ad-dc; then
>> >                         systemctl kill --kill-who all --signal=SIGHUP
>> > samba-ad-dc
>> >                 elif [ -f /var/run/samba/samba.pid ]; then
>> >                         # This only sends to main pid, See #803924
>> >                         kill -HUP `cat /var/run/samba/samba.pid`
>> >                 fi
>> >         endscript
>> >         compress
>> >         delaycompress
>> >         notifempty
>> > }
>> >
>> > I'm not sure how this fits together with the entries in
>> > smb.conf and if one
>> > depends on the other. But my understanding is that
>> > /var/log/samba/log.samba
>> > should be rotated weekly and that only 7 files should be kept.
>> >
>> > Anyway, clearly neither one nor the other is working as
>> > log.samba is just
>> > growing and growing and there is not a single .old file for log.samba.
>> >
>> > Any advice on how to mitigate this situation?
>> >
>> > Thanks,
>> > Vic
>> > --
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>> >
>> >
>>
>>
>> --
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>