[Gluster-devel] [Gluster-infra] rebal-all-nodes-migrate.t always fails now

[Yaniv Kaul]

What was the result of this investigation? I suspect seeing the same issue
on builder209[1].
Y.

[1] https://build.gluster.org/job/centos7-regression/6302/consoleFull

On Fri, Apr 5, 2019 at 5:40 PM Michael Scherer <mscherer at redhat.com> wrote:

> Le vendredi 05 avril 2019 à 16:55 +0530, Nithya Balachandran a écrit :
> > On Fri, 5 Apr 2019 at 12:16, Michael Scherer <mscherer at redhat.com>
> > wrote:
> >
> > > Le jeudi 04 avril 2019 à 18:24 +0200, Michael Scherer a écrit :
> > > > Le jeudi 04 avril 2019 à 19:10 +0300, Yaniv Kaul a écrit :
> > > > > I'm not convinced this is solved. Just had what I believe is a
> > > > > similar
> > > > > failure:
> > > > >
> > > > > *00:12:02.532* A dependency job for rpc-statd.service failed.
> > > > > See
> > > > > 'journalctl -xe' for details.*00:12:02.532* mount.nfs:
> > > > > rpc.statd is
> > > > > not running but is required for remote locking.*00:12:02.532*
> > > > > mount.nfs: Either use '-o nolock' to keep locks local, or start
> > > > > statd.*00:12:02.532* mount.nfs: an incorrect mount option was
> > > > > specified
> > > > >
> > > > > (of course, it can always be my patch!)
> > > > >
> > > > > https://build.gluster.org/job/centos7-regression/5384/console
> > > >
> > > > same issue, different builder (206). I will check them all, as
> > > > the
> > > > issue is more widespread than I expected (or it did popup since
> > > > last
> > > > time I checked).
> > >
> > > Deepshika did notice that the issue came back on one server
> > > (builder202) after a reboot, so the rpcbind issue is not related to
> > > the
> > > network initscript one, so the RCA continue.
> > >
> > > We are looking for another workaround involving fiddling with the
> > > socket (until we find why it do use ipv6 at boot, but not after,
> > > when
> > > ipv6 is disabled).
> > >
> >
> > Could this be relevant?
> > https://access.redhat.com/solutions/2798411
>
> Good catch.
>
> So, we already do that, Nigel took care of that (after 2 days of
> research). But I didn't knew the exact symptoms, and decided to double
> check just in case.
>
> And... there is no sysctl.conf in the initrd. Running dracut -v -f do
> not change anything.
>
> Running "dracut -v -f -H" take care of that (and this fix the problem),
> but:
> - our ansible script already run that
> - -H is hostonly, which is already the default on EL7 according to the
> doc.
>
> However, if dracut-config-generic is installed, it doesn't build a
> hostonly initrd, and so do not include the sysctl.conf file (who break
> rpcbnd, who break the test suite).
>
> And for some reason, it is installed the image in ec2 (likely default),
> but not by default on the builders.
>
> So what happen is that after a kernel upgrade, dracut rebuild a generic
> initrd instead of a hostonly one, who break things. And kernel was
> likely upgraded recently (and upgrade happen nightly (for some value of
> "night"), so we didn't see that earlier, nor with a fresh system.
>
>
> So now, we have several solution:
> - be explicit on using hostonly in dracut, so this doesn't happen again
> (or not for this reason)
>
> - disable ipv6 in rpcbind in a cleaner way (to be tested)
>
> - get the test suite work with ip v6
>
> In the long term, I also want to monitor the processes, but for that, I
> need a VPN between the nagios server and ec2, and that project got
> blocked by several issues (like EC2 not support ecdsa keys, and we use
> that for ansible, so we have to come back to RSA for full automated
> deployment, and openvon requires to use certificates, so I need a newer
> python openssl for doing what I want, and RHEL 7 is too old, etc, etc).
>
> As the weekend approach for me, I just rebuilt the initrd for the time
> being. I guess forcing hostonly is the safest fix for now, but this
> will be for monday.
> --
> Michael Scherer
> Sysadmin, Community Infrastructure and Platform, OSAS
>
>
>
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