[Pacemaker] unexpected demote request on master

Andrew Beekhof andrew at beekhof.net
Thu May 22 06:30:35 EDT 2014


On 22 May 2014, at 4:33 pm, K Mehta <kiranmehta1981 at gmail.com> wrote:

> Hi,
>    vsanqa27 is promoted to master and vsanqa28 is slave. Suddently, vsanqa27 is demoted and vsanqa28 is promoted.
> 
> 
> [root at vsanqa28 vsh-mp-05]# rpm -qa | grep pcs; rpm -qa | grep ccs ; rpm -qa | grep pacemaker ; rpm -qa | grep corosync
> pcs-0.9.90-2.el6.centos.2.noarch
> ccs-0.16.2-69.el6_5.1.x86_64
> pacemaker-cli-1.1.8-7.el6.x86_64
> pacemaker-cluster-libs-1.1.8-7.el6.x86_64
> pacemaker-1.1.8-7.el6.x86_64
> pacemaker-libs-1.1.8-7.el6.x86_64
> corosync-1.4.1-15.el6_4.1.x86_64
> corosynclib-1.4.1-15.el6_4.1.x86_64
> 
> [root at vsanqa28 vsh-mp-05]# uname -a
> Linux vsanqa28 2.6.32-358.el6.x86_64 #1 SMP Fri Feb 22 00:31:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
> [root at vsanqa28 vsh-mp-05]# cat /etc/redhat-release
> CentOS release 6.4 (Final)
> [root at vsanqa28 vsh-mp-05]#
> 
> 
> 
> May 13 01:38:06 vsanqa27 crmd[6961]:   notice: process_lrm_event: LRM operation vha-924bf029-93a2-41a0-adcf-f1c1a42956e5_promote_0 (call=704, rc=0, cib-update=412, confirmed=true) ok
> May 13 01:38:06 vsanqa27 crmd[6961]:   notice: process_lrm_event: LRM operation vha-924bf029-93a2-41a0-adcf-f1c1a42956e5_monitor_30000 (call=707, rc=8, cib-update=413, confirmed=false) master
> May 13 01:38:36 vsanqa27 cib[6956]:   notice: cib_process_diff: Diff 0.9967.124 -> 0.9967.125 from vsanqa28 not applied to 0.9967.124: Failed application of an update diff
> May 13 01:38:36 vsanqa27 cib[6956]:   notice: cib_server_process_diff: Not applying diff 0.9967.125 -> 0.9967.126 (sync in progress)
> May 13 01:38:36 vsanqa27 crmd[6961]:   notice: process_lrm_event: LRM operation vha-924bf029-93a2-41a0-adcf-f1c1a42956e5_demote_0 (call=713, rc=0, cib-update=415, confirmed=true) ok   <<<<< Why did this happen ?
> May 13 01:38:36 vsanqa27 crmd[6961]:   notice: process_lrm_event: LRM operation vha-924bf029-93a2-41a0-adcf-f1c1a42956e5_monitor_31000 (call=716, rc=8, cib-update=416, confirmed=false) master
> May 13 01:38:36 vsanqa27 attrd[6959]:   notice: attrd_ais_dispatch: Update relayed from vsanqa28
> May 13 01:38:36 vsanqa27 attrd[6959]:   notice: attrd_trigger_update: Sending flush op to all hosts for: fail-count-vha-924bf029-93a2-41a0-adcf-f1c1a42956e5 (1)
> May 13 01:38:36 vsanqa27 attrd[6959]:   notice: attrd_perform_update: Sent update 6442: fail-count-vha-924bf029-93a2-41a0-adcf-f1c1a42956e5=1
> May 13 01:38:36 vsanqa27 attrd[6959]:   notice: attrd_ais_dispatch: Update relayed from vsanqa28
> May 13 01:38:36 vsanqa27 attrd[6959]:   notice: attrd_trigger_update: Sending flush op to all hosts for: last-failure-vha-924bf029-93a2-41a0-adcf-f1c1a42956e5 (1399970316)
> 
> 
> 
> May 13 01:38:06 vsanqa28 pengine[4310]:   notice: unpack_config: On loss of CCM Quorum: Ignore
> May 13 01:38:06 vsanqa28 pengine[4310]:   notice: LogActions: Promote vha-924bf029-93a2-41a0-adcf-f1c1a42956e5:1#011(Slave -> Master vsanqa27)
> May 13 01:38:06 vsanqa28 pengine[4310]:   notice: process_pe_message: Calculated Transition 223: /var/lib/pacemaker/pengine/pe-input-817.bz2
> May 13 01:38:06 vsanqa28 crmd[4311]:   notice: run_graph: Transition 223 (Complete=4, Pending=0, Fired=0, Skipped=0, Incomplete=0, Source=/var/lib/pacemaker/pengine/pe-input-817.bz2): Complete
> May 13 01:38:06 vsanqa28 crmd[4311]:   notice: do_state_transition: State transition S_TRANSITION_ENGINE -> S_IDLE [ input=I_TE_SUCCESS cause=C_FSA_INTERNAL origin=notify_crmd ]
> May 13 01:38:36 vsanqa28 attrd[4309]:   notice: attrd_trigger_update: Sending flush op to all hosts for: master-vha-924bf029-93a2-41a0-adcf-f1c1a42956e5 (1)
> May 13 01:38:36 vsanqa28 attrd[4309]:   notice: attrd_perform_update: Sent update 3511: master-vha-924bf029-93a2-41a0-adcf-f1c1a42956e5=1
> May 13 01:38:36 vsanqa28 crmd[4311]:   notice: do_state_transition: State transition S_IDLE -> S_POLICY_ENGINE [ input=I_PE_CALC cause=C_FSA_INTERNAL origin=abort_transition_graph ]
> May 13 01:38:36 vsanqa28 pengine[4310]:   notice: unpack_config: On loss of CCM Quorum: Ignore
> May 13 01:38:36 vsanqa28 pengine[4310]:   notice: LogActions: Promote vha-924bf029-93a2-41a0-adcf-f1c1a42956e5:0#011(Slave -> Master vsanqa28)
> May 13 01:38:36 vsanqa28 pengine[4310]:   notice: LogActions: Demote  vha-924bf029-93a2-41a0-adcf-f1c1a42956e5:1#011(Master -> Slave vsanqa27)  <<<<< Why did this happen ?

attach the file mentioned on the next line and we might be able to find out

> May 13 01:38:36 vsanqa28 pengine[4310]:   notice: process_pe_message: Calculated Transition 224: /var/lib/pacemaker/pengine/pe-input-818.bz2
> May 13 01:38:36 vsanqa28 crmd[4311]:   notice: run_graph: Transition 224 (Complete=5, Pending=0, Fired=0, Skipped=4, Incomplete=1, Source=/var/lib/pacemaker/pengine/pe-input-818.bz2): Stopped
> May 13 01:38:36 vsanqa28 pengine[4310]:   notice: unpack_config: On loss of CCM Quorum: Ignore
> May 13 01:38:36 vsanqa28 pengine[4310]:   notice: LogActions: Promote vha-924bf029-93a2-41a0-adcf-f1c1a42956e5:0#011(Slave -> Master vsanqa28)
> May 13 01:38:36 vsanqa28 crmd[4311]:  warning: destroy_action: Cancelling timer for action 14 (src=1629)
> May 13 01:38:36 vsanqa28 pengine[4310]:   notice: process_pe_message: Calculated Transition 225: /var/lib/pacemaker/pengine/pe-input-819.bz2
> May 13 01:38:36 vsanqa28 vgc-vha-config: /usr/bin/vgc-vha-config --promote /dev/vgca0_VHA13
> May 13 01:38:36 vsanqa28 vgc-vha-config: Success
> May 13 01:38:36 vsanqa28 crmd[4311]:  warning: status_from_rc: Action 219 (vha-924bf029-93a2-41a0-adcf-f1c1a42956e5_monitor_31000) on vsanqa27 failed (target: 0 vs. rc: 8): Error
> May 13 01:38:36 vsanqa28 crmd[4311]:  warning: update_failcount: Updating failcount for vha-924bf029-93a2-41a0-adcf-f1c1a42956e5 on vsanqa27 after failed monitor: rc=8 (update=value++, time=1399970316)
> May 13 01:38:36 vsanqa28 crmd[4311]:  warning: update_failcount: Updating failcount for vha-924bf029-93a2-41a
> 
> 
> Regards,
>  Kiran
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