[Pacemaker] Pacemaker warm-up latency

[Andrew Beekhof]

2011/3/30  <cfk at itri.org.tw>:
> Dear all,
>
>
>
> I have a similar question to that on
> http://oss.clusterlabs.org/pipermail/pacemaker/2011-March/009750.html.
>
>
>
> At the moment I start corosync and pacemaker, the monitoring status by
> executing crm_mon is:
>
> *************************************************
>
> ============
>
> Last updated: Wed Mar 30 21:51:49 2011
>
> Stack: openais
>
> Current DC: NONE
>
> 2 Nodes configured, 2 expected votes
>
> 4 Resources configured.
>
> ============
>
>
>
> Node alpha1: OFFLINE
>
> Node alpha2: OFFLINE
>
> *************************************************
>
>
>
> After around 1 min. the monitor status becomes:
>
> *************************************************
>
> ============
>
> Last updated: Wed Mar 30 21:52:54 2011
>
> Stack: openais
>
> Current DC: alpha1 - partition with quorum
>
> Version: 1.0.10-da7075976b5ff0bee71074385f8fd02f296ec8a3
>
> 2 Nodes configured, 2 expected votes
>
> 4 Resources configured.
>
> ============
>
>
>
> Node alpha1: online
>
>         Disk:0  (ocf::linbit:drbd) Master
>
>         ClusterIP       (ocf::heartbeat:IPaddr2) Started
>
>         FS      (ocf::heartbeat:Filesystem) Started
>
>         WebSite (ocf::heartbeat:apache) Started
>
> Node alpha2: online
>
>         Disk:1  (ocf::linbit:drbd) Slave
>
> *************************************************
>
>
>
> My questions are:
>
> 1.       Why does the pacemaker warm-up behavior spend some time? Is it
> controlled by a configuration value?

man crmd <-- dc-deadtime

>
> 2.       At the warm-up time, how can I detect that the node status becomes
> online? Using a shell script to parse crm_mon result periodically until the
> "online" sub-string?

crmadmin -S `uname -n`  <-- look for S_IDLE or S_NOT_DC

>
>
>
> Thanks for your help in advance,.
>
>
>
> Chia-Feng Kang
>
>
>
>
>
>
>
>
>
> 本信件可能包含工研院機密資訊，非指定之收件者，請勿使用或揭露本信件內容，並請銷毀此信件。
> This email may contain confidential information. Please do not use or
> disclose it in any way and delete it if you are not the intended recipient.
> _______________________________________________
> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs:
> http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
>
>