[ClusterLabs] Pending Fencing Actions shown in pcs status

Steffen Vinther Sørensen svinther at gmail.com
Thu Jan 7 03:49:34 EST 2021


Hi Reid,

I was under the impression that 'pcs config' was the CIB in a more
friendly format. Here is the 'pcs cluster cib' as requested

/Steffen

On Thu, Jan 7, 2021 at 9:39 AM Reid Wahl <nwahl at redhat.com> wrote:
>
> Hi, Steffen. Those attachments don't contain the CIB. They contain the `pcs config` output. You can get the cib with `pcs cluster cib > $(hostname).cib.xml`.
>
> Granted, it's possible that this fence action information wouldn't be in the CIB at all. It might be stored in fencer memory.
>
> On Thu, Jan 7, 2021 at 12:26 AM <renayama19661014 at ybb.ne.jp> wrote:
>>
>> Hi Steffen,
>>
>> > Here CIB settings attached (pcs config show) for all 3 of my nodes
>> > (all 3 seems 100% identical), node03 is the DC.
>>
>>
>> Thank you for the attachment.
>>
>> What is the scenario when this situation occurs?
>> In what steps did the problem appear when fencing was performed (or failed)?
>>
>>
>> Best Regards,
>> Hideo Yamauchi.
>>
>>
>> ----- Original Message -----
>> > From: Steffen Vinther Sørensen <svinther at gmail.com>
>> > To: renayama19661014 at ybb.ne.jp; Cluster Labs - All topics related to open-source clustering welcomed <users at clusterlabs.org>
>> > Cc:
>> > Date: 2021/1/7, Thu 17:05
>> > Subject: Re: [ClusterLabs] Pending Fencing Actions shown in pcs status
>> >
>> > Hi Hideo,
>> >
>> > Here CIB settings attached (pcs config show) for all 3 of my nodes
>> > (all 3 seems 100% identical), node03 is the DC.
>> >
>> > Regards
>> > Steffen
>> >
>> > On Thu, Jan 7, 2021 at 8:06 AM <renayama19661014 at ybb.ne.jp> wrote:
>> >>
>> >>  Hi Steffen,
>> >>  Hi Reid,
>> >>
>> >>  I also checked the Centos source rpm and it seems to include a fix for the
>> > problem.
>> >>
>> >>  As Steffen suggested, if you share your CIB settings, I might know
>> > something.
>> >>
>> >>  If this issue is the same as the fix, the display will only be displayed on
>> > the DC node and will not affect the operation.
>> >>  The pending actions shown will remain for a long time, but will not have a
>> > negative impact on the cluster.
>> >>
>> >>  Best Regards,
>> >>  Hideo Yamauchi.
>> >>
>> >>
>> >>  ----- Original Message -----
>> >>  > From: Reid Wahl <nwahl at redhat.com>
>> >>  > To: Cluster Labs - All topics related to open-source clustering
>> > welcomed <users at clusterlabs.org>
>> >>  > Cc:
>> >>  > Date: 2021/1/7, Thu 15:58
>> >>  > Subject: Re: [ClusterLabs] Pending Fencing Actions shown in pcs status
>> >>  >
>> >>  > It's supposedly fixed in that version.
>> >>  >   - https://bugzilla.redhat.com/show_bug.cgi?id=1787749
>> >>  >   - https://access.redhat.com/solutions/4713471
>> >>  >
>> >>  > So you may be hitting a different issue (unless there's a bug in
>> > the
>> >>  > pcmk 1.1 backport of the fix).
>> >>  >
>> >>  > I may be a little bit out of my area of knowledge here, but can you
>> >>  > share the CIBs from nodes 1 and 3? Maybe Hideo, Klaus, or Ken has some
>> >>  > insight.
>> >>  >
>> >>  > On Wed, Jan 6, 2021 at 10:53 PM Steffen Vinther Sørensen
>> >>  > <svinther at gmail.com> wrote:
>> >>  >>
>> >>  >>  Hi Hideo,
>> >>  >>
>> >>  >>  If the fix is not going to make it into the CentOS7 pacemaker
>> > version,
>> >>  >>  I guess the stable approach to take advantage of it is to build
>> > the
>> >>  >>  cluster on another OS than CentOS7 ? A little late for that in
>> > this
>> >>  >>  case though :)
>> >>  >>
>> >>  >>  Regards
>> >>  >>  Steffen
>> >>  >>
>> >>  >>
>> >>  >>
>> >>  >>
>> >>  >>  On Thu, Jan 7, 2021 at 7:27 AM <renayama19661014 at ybb.ne.jp>
>> > wrote:
>> >>  >>  >
>> >>  >>  > Hi Steffen,
>> >>  >>  >
>> >>  >>  > The fix pointed out by Reid is affecting it.
>> >>  >>  >
>> >>  >>  > Since the fencing action requested by the DC node exists
>> > only in the
>> >>  > DC node, such an event occurs.
>> >>  >>  > You will need to take advantage of the modified pacemaker to
>> > resolve
>> >>  > the issue.
>> >>  >>  >
>> >>  >>  > Best Regards,
>> >>  >>  > Hideo Yamauchi.
>> >>  >>  >
>> >>  >>  >
>> >>  >>  >
>> >>  >>  > ----- Original Message -----
>> >>  >>  > > From: Reid Wahl <nwahl at redhat.com>
>> >>  >>  > > To: Cluster Labs - All topics related to open-source
>> > clustering
>> >>  > welcomed <users at clusterlabs.org>
>> >>  >>  > > Cc:
>> >>  >>  > > Date: 2021/1/7, Thu 15:07
>> >>  >>  > > Subject: Re: [ClusterLabs] Pending Fencing Actions
>> > shown in pcs
>> >>  > status
>> >>  >>  > >
>> >>  >>  > > Hi, Steffen. Are your cluster nodes all running the
>> > same
>> >>  > Pacemaker
>> >>  >>  > > versions? This looks like Bug 5401[1], which is fixed
>> > by upstream
>> >>  >>  > > commit df71a07[2]. I'm a little bit confused about
>> > why it
>> >>  > only shows
>> >>  >>  > > up on one out of three nodes though.
>> >>  >>  > >
>> >>  >>  > > [1] https://bugs.clusterlabs.org/show_bug.cgi?id=5401
>> >>  >>  > > [2]
>> > https://github.com/ClusterLabs/pacemaker/commit/df71a07
>> >>  >>  > >
>> >>  >>  > > On Tue, Jan 5, 2021 at 8:31 AM Steffen Vinther Sørensen
>> >>  >>  > > <svinther at gmail.com> wrote:
>> >>  >>  > >>
>> >>  >>  > >>  Hello
>> >>  >>  > >>
>> >>  >>  > >>  node 1 is showing this in 'pcs status'
>> >>  >>  > >>
>> >>  >>  > >>  Pending Fencing Actions:
>> >>  >>  > >>  * reboot of kvm03-node02.avigol-gcs.dk pending:
>> >>  > client=crmd.37819,
>> >>  >>  > >>  origin=kvm03-node03.avigol-gcs.dk
>> >>  >>  > >>
>> >>  >>  > >>  node 2 and node 3 outputs no such thing (node 3 is
>> > DC)
>> >>  >>  > >>
>> >>  >>  > >>  Google is not much help, how to investigate this
>> > further and
>> >>  > get rid
>> >>  >>  > >>  of such terrifying status message ?
>> >>  >>  > >>
>> >>  >>  > >>  Regards
>> >>  >>  > >>  Steffen
>> >>  >>  > >>  _______________________________________________
>> >>  >>  > >>  Manage your subscription:
>> >>  >>  > >>
>> > https://lists.clusterlabs.org/mailman/listinfo/users
>> >>  >>  > >>
>> >>  >>  > >>  ClusterLabs home: https://www.clusterlabs.org/
>> >>  >>  > >>
>> >>  >>  > >
>> >>  >>  > >
>> >>  >>  > > --
>> >>  >>  > > Regards,
>> >>  >>  > >
>> >>  >>  > > Reid Wahl, RHCA
>> >>  >>  > > Senior Software Maintenance Engineer, Red Hat
>> >>  >>  > > CEE - Platform Support Delivery - ClusterHA
>> >>  >>  > >
>> >>  >>  > > _______________________________________________
>> >>  >>  > > Manage your subscription:
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>> >>  >>  >
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>> >>  >
>> >>  >
>> >>  >
>> >>  > --
>> >>  > Regards,
>> >>  >
>> >>  > Reid Wahl, RHCA
>> >>  > Senior Software Maintenance Engineer, Red Hat
>> >>  > CEE - Platform Support Delivery - ClusterHA
>> >>  >
>> >>  > _______________________________________________
>> >>  > Manage your subscription:
>> >>  > https://lists.clusterlabs.org/mailman/listinfo/users
>> >>  >
>> >>  > ClusterLabs home: https://www.clusterlabs.org/
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>
>
>
> --
> Regards,
>
> Reid Wahl, RHCA
> Senior Software Maintenance Engineer, Red Hat
> CEE - Platform Support Delivery - ClusterHA
> _______________________________________________
> Manage your subscription:
> https://lists.clusterlabs.org/mailman/listinfo/users
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> ClusterLabs home: https://www.clusterlabs.org/
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