[ClusterLabs] Pending Fencing Actions shown in pcs status

renayama19661014 at ybb.ne.jp renayama19661014 at ybb.ne.jp
Thu Jan 7 03:54:25 EST 2021


Hi Steffen,

> Unfortunately not sure about the exact scenario. But I have been doing
> some recent experiments with node standby/unstandby stop/start. This
> to get procedures right for updating node rpms etc.
> 
> Later I noticed the uncomforting "pending fencing actions" status msg.

Okay!

Repeat the standby and unstandby steps in the same way to check.
We will start checking after tomorrow, so I think it will take some time until next week.


Many thanks,
Hideo Yamauchi.



----- Original Message -----
> From: "renayama19661014 at ybb.ne.jp" <renayama19661014 at ybb.ne.jp>
> To: Reid Wahl <nwahl at redhat.com>; Cluster Labs - All topics related to open-source clustering welcomed <users at clusterlabs.org>
> Cc: 
> Date: 2021/1/7, Thu 17:51
> Subject: Re: [ClusterLabs] Pending Fencing Actions shown in pcs status
> 
> Hi Steffen,
> Hi Reid,
> 
> The fencing history is kept inside stonith-ng and is not written to cib.
> However, getting the entire cib and getting it sent will help you to reproduce 
> the problem.
> 
> Best Regards,
> Hideo Yamauchi.
> 
> 
> ----- Original Message -----
>> From: Reid Wahl <nwahl at redhat.com>
>> To: renayama19661014 at ybb.ne.jp; Cluster Labs - All topics related to 
> open-source clustering welcomed <users at clusterlabs.org> 
>> Date: 2021/1/7, Thu 17:39
>> Subject: Re: [ClusterLabs] Pending Fencing Actions shown in pcs status
>> 
>> 
>> 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:
>>>>>   >>  > > 
> https://lists.clusterlabs.org/mailman/listinfo/users 
>>>>>   >>  > >
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> https://www.clusterlabs.org/ 
>>>>>   >>  > >
>>>>>   >>  >
>>>>>   >>  > _______________________________________________
>>>>>   >>  > Manage your subscription:
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> 
>>>>>   >>
>>>>>   >>  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
>> 
>> 
> 
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