[Pacemaker] Corosync 1.4.7: zombie (defunct)

Mon Jan 5 18:23:59 EST 2015

Yeah, I can imagine 1.1.6 behaving like this.
I'd highly recommend 1.1.12

> On 5 Jan 2015, at 5:14 pm, Sergey Arlashin <sergeyarl.maillist at gmail.com> wrote:
> 
> Pacemaker 1.1.6
> 
> It runs on Ubuntu 12.04 LTS 64bit. 
> 
> Linux lb-node1 3.11.0-23-generic #40~precise1-Ubuntu SMP Wed Jun 4 22:06:36 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
> 
> --
> Best regards,
> Sergey Arlashin
> 
> 
> On Jan 5, 2015, at 7:59 AM, Andrew Beekhof <andrew at beekhof.net> wrote:
> 
>> pacemaker version?  it looks familiar but it depends on the version number.
>> 
>>> On 29 Dec 2014, at 10:24 pm, Sergey Arlashin <sergeyarl.maillist at gmail.com> wrote:
>>> 
>>> Hi!
>>> Recently I've noticed that one of my nodes had OFFLINE status in 'crm status' output. But it actually was not. I could ssh on this node. I could get 'crm status' from that node's console. After some time it became online. It happened several times without any obvious reason with other nodes. 
>>> 
>>> Still no error of fatal messages in logs. The only warning messages I could get from corosync.log were the following:
>>> 
>>> Dec 29 10:56:34 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1346 -> 0.233.1347 not applied to 0.233.1354: current "num_updates" is greater than required
>>> Dec 29 10:56:34 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1347 -> 0.233.1348 not applied to 0.233.1354: current "num_updates" is greater than required
>>> Dec 29 10:56:34 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1348 -> 0.233.1349 not applied to 0.233.1354: current "num_updates" is greater than required
>>> Dec 29 10:56:34 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1349 -> 0.233.1350 not applied to 0.233.1354: current "num_updates" is greater than required
>>> Dec 29 10:56:34 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1350 -> 0.233.1351 not applied to 0.233.1354: current "num_updates" is greater than required
>>> Dec 29 10:56:34 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1351 -> 0.233.1352 not applied to 0.233.1354: current "num_updates" is greater than required
>>> Dec 29 10:56:34 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1352 -> 0.233.1353 not applied to 0.233.1354: current "num_updates" is greater than required
>>> Dec 29 10:56:34 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1353 -> 0.233.1354 not applied to 0.233.1354: current "num_updates" is greater than required
>>> Dec 29 10:56:34 lb-node2 attrd: [2240]: WARN: attrd_cib_callback: Update 491 for last-failure-Cachier=1419729443 failed: Application of an update diff failed
>>> Dec 29 10:56:34 lb-node2 attrd: [2240]: WARN: attrd_cib_callback: Update 494 for fail-count-Cachier=1 failed: Application of an update diff failed
>>> Dec 29 10:56:34 lb-node2 attrd: [2240]: WARN: attrd_cib_callback: Update 497 for probe_complete=true failed: Application of an update diff failed
>>> Dec 29 10:56:34 lb-node2 attrd: [2240]: WARN: attrd_cib_callback: Update 500 for last-failure-Cachier=1419729443 failed: Application of an update diff failed
>>> Dec 29 10:56:34 lb-node2 attrd: [2240]: WARN: attrd_cib_callback: Update 503 for fail-count-Cachier=1 failed: Application of an update diff failed
>>> Dec 29 10:56:37 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1338 -> 0.233.1339 not applied to 0.233.1382: current "num_updates" is greater than required
>>> Dec 29 10:56:37 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1339 -> 0.233.1340 not applied to 0.233.1382: current "num_updates" is greater than required
>>> Dec 29 10:56:37 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1340 -> 0.233.1341 not applied to 0.233.1382: current "num_updates" is greater than required
>>> Dec 29 10:56:37 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1341 -> 0.233.1342 not applied to 0.233.1382: current "num_updates" is greater than required
>>> Dec 29 10:56:37 lb-node2 cib: [2238]: WARN: cib_process_diff: Diff 0.233.1342 -> 0.233.1343 not applied to 0.233.1382: current "num_updates" is greater than required
>>> 
>>> After exploring corosync processes with ps I found out that on all my nodes there are zombie corosync procs like:
>>> 
>>> root     13892  0.0  0.0      0     0 ?        Z    Dec26   0:04 [corosync] <defunct>
>>> root     21793  0.0  0.0      0     0 ?        Z    Dec26   0:00 [corosync] <defunct>
>>> root     27009  1.3  1.0 714292 10784 ?        Ssl  Dec18 223:38 /usr/sbin/corosync
>>> 
>>> Is it ok to have zombie corosync procs on nodes? Or does it suggest that something wrong is going on ? 
>>> 
>>> Thanks in advance
>>> 
>>> --
>>> Best regards,
>>> Sergey Arlashin
>>> 
>>> 
>>> 
>>> 
>>> 
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>> 
>> 
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> 
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