Re: ceph-mon not starting on boot with systemd and Ubuntu 16.04

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To also answer Sage's question: No, this is a fresh Jewel install in a few test VMs. This system was not upgraded.

It was installed 2 hours ago.

> Op 12 mei 2016 om 14:51 schreef Jan Schermer <jan@xxxxxxxxxxx>:
> 
> 
> Can you post the contents of ceph-mon@.service file?
> 

Yes, here you go:

root@charlie:~# cat /lib/systemd/system/ceph-mon@.service 
[Unit]
Description=Ceph cluster monitor daemon

# According to:
#   http://www.freedesktop.org/wiki/Software/systemd/NetworkTarget
# these can be removed once ceph-mon will dynamically change network
# configuration.
After=network-online.target local-fs.target ceph-create-keys@%i.service
Wants=network-online.target local-fs.target ceph-create-keys@%i.service

PartOf=ceph-mon.target

[Service]
LimitNOFILE=1048576
LimitNPROC=1048576
EnvironmentFile=-/etc/default/ceph
Environment=CLUSTER=ceph
ExecStart=/usr/bin/ceph-mon -f --cluster ${CLUSTER} --id %i --setuser ceph --setgroup ceph
ExecReload=/bin/kill -HUP $MAINPID
PrivateDevices=yes
ProtectHome=true
ProtectSystem=full
PrivateTmp=true
TasksMax=infinity
Restart=on-failure
StartLimitInterval=30min
StartLimitBurst=3

[Install]
WantedBy=ceph-mon.target
root@charlie:~#

> what does
> systemctl is-enabled ceph-mon@charlie
> say?
> 

root@charlie:~# systemctl is-enabled ceph-mon@charlie
enabled
root@charlie:~#

> However, this looks like it was just started at a bad moment and died - nothing in logs?
> 

No, I checked the ceph-mon logs in /var/log/ceph. No sign of it even trying to start after boot. In /var/log/syslog there also is not a trace of ceph-mon.

Only the OSD starts.

Wido

> Jan
> 
> 
> > On 12 May 2016, at 14:44, Sage Weil <sage@xxxxxxxxxxxx> wrote:
> > 
> > On Thu, 12 May 2016, Wido den Hollander wrote:
> >> Hi,
> >> 
> >> I am setting up a Jewel cluster in VMs with Ubuntu 16.04.
> >> 
> >> ceph version 10.2.0 (3a9fba20ec743699b69bd0181dd6c54dc01c64b9)
> >> 
> >> After a reboot the Ceph Monitors don't start and I have to do so manually.
> >> 
> >> Three machines, alpha, bravo and charlie all have the same problem.
> >> 
> >> root@charlie:~# systemctl status ceph-mon@charlie
> >> ● ceph-mon@charlie.service - Ceph cluster monitor daemon
> >>   Loaded: loaded (/lib/systemd/system/ceph-mon@.service; enabled; vendor preset: enabled)
> >>   Active: inactive (dead)
> >> root@charlie:~#
> >> 
> >> I can start it and it works
> > 
> > Hmm.. my systemd-fu is weak, but if it's enabled it seems like it shoud 
> > come up.
> > 
> > Was this an upgraded package?  What if you do 'systemctl reenable 
> > ceph-mon@charlie'?
> > 
> > sage
> > 
> > 
> > 
> >> 
> >> root@charlie:~# systemctl start ceph-mon@charlie
> >> root@charlie:~# systemctl status ceph-mon@charlie
> >> ● ceph-mon@charlie.service - Ceph cluster monitor daemon
> >>   Loaded: loaded (/lib/systemd/system/ceph-mon@.service; enabled; vendor preset: enabled)
> >>   Active: active (running) since Thu 2016-05-12 16:08:56 CEST; 1s ago
> >> Main PID: 1368 (ceph-mon)
> >> 
> >> I tried removing the /var/log/ceph/ceph-mon.charlie.log file and reboot to see if the mon was actually invoked, but it wasn't.
> >> 
> >> ceph.target has been started and so is the OSD on the machine. It is just the monitor which hasn't been started.
> >> 
> >> In the syslog I see:
> >> 
> >> May 12 16:11:19 charlie systemd[1]: Starting Ceph object storage daemon...
> >> May 12 16:11:19 charlie systemd[1]: Starting LSB: Start Ceph distributed file system daemons at boot time...
> >> May 12 16:11:19 charlie systemd[1]: Started LSB: Start Ceph distributed file system daemons at boot time.
> >> May 12 16:11:20 charlie systemd[1]: Started Ceph object storage daemon.
> >> May 12 16:11:20 charlie systemd[1]: Started Ceph disk activation: /dev/sdb2.
> >> May 12 16:11:21 charlie systemd[1]: Started Ceph object storage daemon.
> >> May 12 16:11:21 charlie systemd[1]: Started Ceph disk activation: /dev/sdb1.
> >> 
> >> Am I missing something or is this a bug?
> >> 
> >> Wido
> >> _______________________________________________
> >> ceph-users mailing list
> >> ceph-users@xxxxxxxxxxxxxx
> >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> > _______________________________________________
> > ceph-users mailing list
> > ceph-users@xxxxxxxxxxxxxx
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
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