[Pacemaker] pacemaker + corosync + clvm in ubuntu

Fri Mar 22 14:00:58 UTC 2013

Hello Angel

I'm using debian, i don't know if the result on ubuntu is the same, try

apt-file search dlm_controld.pcmk

Result should be:
dlm-pcmk: /usr/sbin/dlm_controld.pcmk

2013/3/22 Angel L. Mateo <amateo at um.es>

> Hello,
>
>         I'm trying to configure a cluster based in pacemaker and corosync
> in two ubuntu precise servers. The cluster is for an active/standby
> pop/imap server with a shared storage accesed through fibrechannel.
>
>         In order to avoid concurrent access to this shared storage, I need
> clvm (maybe I'm wrong), so I'm trying to configure it. According to
> different guides and howtos I have found I have configured a DLM and clvm
> resource:
>
> root at myotis51:/etc/cluster# crm configure show
> node myotis51
> node myotis52
> primitive clvm ocf:lvm2:clvmd \
>         params daemon_timeout="30" \
>         meta target-role="Started"
> primitive dlm ocf:pacemaker:controld \
>         meta target-role="Started"
> group dlm-clvm dlm clvm
> clone dlm-clvm-clone dlm-clvm \
>         meta interleave="true" ordered="true"
> property $id="cib-bootstrap-options" \
>         dc-version="1.1.6-**9971ebba4494012a93c03b40a2c58e**c0eb60f50c" \
>         cluster-infrastructure="cman" \
>         expected-quorum-votes="2" \
>         stonith-enabled="false" \
>         no-quorum-policy="ignore" \
>         last-lrm-refresh="1363957949"
> rsc_defaults $id="rsc-options" \
>         resource-stickiness="100"
>
>         With this configuration, resources are not launched, I think
> because DLM is failing because it's trying to launch dlm_controld.pcmk
> which is not installed in my system
>
> Mar 22 13:52:57 myotis51 pengine: [2989]: notice: LogActions: Start dlm:0
>       (myotis51)
> Mar 22 13:52:57 myotis51 pengine: [2989]: notice: LogActions: Leave dlm:1
>       (Stopped)
> Mar 22 13:52:57 myotis51 crmd: [2990]: info: te_rsc_command: Initiating
> action 4: monitor dlm:0_monitor_0 on myotis51 (local)
> Mar 22 13:52:57 myotis51 crmd: [2990]: info: do_lrm_rsc_op: Performing
> key=4:0:7:71fa2334-a3f3-4c01-**a000-7e702a32d0e2 op=dlm:0_monitor_0 )
> Mar 22 13:52:57 myotis51 lrmd: [2987]: info: rsc:dlm:0 probe[2] (pid 3050)
> Mar 22 13:52:57 myotis51 controld[3050]: ERROR: Setup problem: couldn't
> find command: dlm_controld.pcmk
> Mar 22 13:52:57 myotis51 lrmd: [2987]: info: operation monitor[2] on dlm:0
> for client 2990: pid 3050 exited with return code 5
> Mar 22 13:52:57 myotis51 crmd: [2990]: info: process_lrm_event: LRM
> operation dlm:0_monitor_0 (call=2, rc=5, cib-update=27, confirmed=true) not
> installed
> Mar 22 13:52:57 myotis51 crmd: [2990]: WARN: status_from_rc: Action 4
> (dlm:0_monitor_0) on myotis51 failed (target: 7 vs. rc: 5): Error
> Mar 22 13:52:57 myotis51 crmd: [2990]: info: abort_transition_graph:
> match_graph_event:277 - Triggered transition abort (complete=0,
> tag=lrm_rsc_op, id=dlm:0_last_failure_0, magic=0:5;4:0:7:71fa2334-a3f3-**4c01-a000-7e702a32d0e2,
> cib=0.32.14) : Event failed
> Mar 22 13:52:57 myotis51 crmd: [2990]: info: match_graph_event: Action
> dlm:0_monitor_0 (4) confirmed on myotis51 (rc=4)
> Mar 22 13:52:57 myotis51 pengine: [2989]: notice: unpack_rsc_op: Hard
> error - dlm:0_last_failure_0 failed with rc=5: Preventing dlm-clvm-clone
> from re-starting on myotis51
> Mar 22 13:52:57 myotis51 pengine: [2989]: notice: LogActions: Leave dlm:0
>       (Stopped)
> Mar 22 13:52:57 myotis51 pengine: [2989]: notice: LogActions: Leave dlm:1
>       (Stopped)
>
>         The problem with this is that I can't find any dlm_controld.pcmk
> binary for ubuntu. Any idea on how to fix this?
>
>         The closest command I have found is dlm_controld provided with
> cman packages, but then I have to replace corosync with cman. Doing this is
> not a big problem for me. The fact is that I'm newbie in HA and the use of
> corosync instead of cman is because this is the one documented with
> pacemaker (http://clusterlabs.org/doc/**en-US/Pacemaker/1.1-plugin/**
> html/Clusters_from_Scratch/**index.html<http://clusterlabs.org/doc/en-US/Pacemaker/1.1-plugin/html/Clusters_from_Scratch/index.html>
> ).
>
>         Is it corosync supposed to be better (or more open or more
> standard based) than cman? In case corosync is more recommended, then what
> is the solution for the dlm problem?
>
>         Thanks in advanced.
>
> --
> Angel L. Mateo Martínez
> Sección de Telemática
> Área de Tecnologías de la Información
> y las Comunicaciones Aplicadas (ATICA)
> http://www.um.es/atica
> Tfo: 868889150
> Fax: 868888337
>
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-- 
esta es mi vida e me la vivo hasta que dios quiera
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