[Samba] Does CTDB run under LXC containers?

[Ralph Böhme]

On Tue, Aug 04, 2015 at 08:05:12PM +0200, Michael Adam wrote:
> On 2015-08-04 at 19:27 +0200, Ralph Böhme wrote:
> > Hi Peter,
> > 
> > On Tue, Aug 04, 2015 at 10:11:56AM -0700, Peter Steele wrote:
> > > We're transitioning from a VM based environment to one that uses LXC based
> > > containers running under CentOS 7. CTDB runs fine under our CentOS 7 VMs.
> > > The same packages running under LXC however seem to have issues:
> > > 
> > > # systemctl start ctdb.service
> > > Job for ctdb.service failed. See 'systemctl status ctdb.service' and
> > > 'journalctl -xn' for details.
> > > 
> > > # systemctl status ctdb.service
> > > ctdb.service - CTDB
> > >    Loaded: loaded (/usr/lib/systemd/system/ctdb.service; disabled)
> > >    Active: failed (Result: exit-code) since Tue 2015-08-04 10:09:06 PDT; 5s
> > > ago
> > >   Process: 9023 ExecStart=/usr/sbin/ctdbd_wrapper /run/ctdb/ctdbd.pid start
> > > (code=exited, status=1/FAILURE)
> > > 
> > > Aug 04 10:09:04 pws-01 ctdbd[9031]: CTDB starting on node
> > > Aug 04 10:09:04 pws-01 ctdbd[9032]: Starting CTDBD (Version 2.5.4) as PID:
> > > 9032
> > > Aug 04 10:09:04 pws-01 ctdbd[9032]: Created PID file /run/ctdb/ctdbd.pid
> > > Aug 04 10:09:04 pws-01 ctdbd[9032]: Unable to set scheduler to SCHED_FIFO
> > > (Operation not permitted)
> > 
> > your container is dopping sys_nice cap, fix the container config.
> 
> Indeed, to make it more concrete, uncomment "lxc.cap.drop = sys_nice"
> (or so) in /var/lib/lxc/<container>/config.
> 
> And more caps may occur.
> 
> > On my Fedora LXC host
> 
> Fedora host? -- interesting. :-)

actually a Fedora vbox on my Macbook. :)))

Cheerio!
-Ralph

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