[Pacemaker] Question about cluster start-up in a 2 node cluster with a node offline.

[Andreas Kurz]

Hello,

On 02/10/2012 07:45 PM, James FLatten wrote:
> On 02/09/2012 09:36 AM, Andreas Kurz wrote:
> 
>     No, this is not a correct behavior ... but for more ... not enough
>     information.
> 
> Andreas-
> 
> Thanks for looking at this. 
> 
> Here is the version information:
> 
>     pacemaker-libs-1.1.6-3.el6.x86_64
>     pacemaker-1.1.6-3.el6.x86_64
>     pacemaker-cluster-libs-1.1.6-3.el6.x86_64
>     pacemaker-cli-1.1.6-3.el6.x86_64
>     drbd-pacemaker-8.4.1-1.el6.x86_64
>     corosync-1.4.1-4.el6.x86_64
>     corosynclib-1.4.1-4.el6.x86_64
> 
> Here is the configuration:
> 
>     node nodea \
>         attributes standby="off"
>     node nodeb \
>         attributes standby="off"
>     primitive ClusterIP ocf:heartbeat:IPaddr2 \
>         params ip="192.168.1.3" cidr_netmask="32" \
>         op monitor interval="30s"
>     primitive datafs ocf:heartbeat:Filesystem \
>         params device="/dev/drbd0" directory="/data" fstype="ext3" \
>         meta target-role="Started"
>     primitive drbd0 ocf:linbit:drbd \
>         params drbd_resource="drbd0" \
>         op monitor interval="60s"

Try to use two monitor ops for your drbds, be sure to use different
intervals per role e.g.:

	op monitor role="Master" interval="30s"
	op monitor role="Slave"  interval="31s"

>     primitive drbd1 ocf:linbit:drbd \
>         params drbd_resource="drbd1" \
>         op monitor interval="60s"
>     primitive httpd ocf:heartbeat:apache \
>         params configfile="/etc/httpd/conf/httpd.conf" \
>         op monitor interval="1min"
>     primitive ipmi-fencing stonith:fence_ipmilan \
>         params pcmk_host_list="nodea nodeb" ipaddr="xxx.xxx.xxx.xxx"
>     login="xxxxxxx" passwd="xxxxxxx" lanplus="1" timeout="4" auth="md5" \
>         op monitor interval="60s"

just do be sure ... you also have an ipmi fencing device capable of
fencing more than one node? ... like the blade center mentioned in
"cluster from scratch"?

Regards,
Andreas

-- 
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>     primitive patchfs ocf:heartbeat:Filesystem \
>         params device="/dev/drbd1" directory="/patch" fstype="ext3" \
>         meta target-role="Started"
>     group web datafs patchfs ClusterIP httpd
>     ms drbd0clone drbd0 \
>         meta master-max="1" master-node-max="1" clone-max="2"
>     clone-node-max="1" notify="true"
>     ms drbd1clone drbd1 \
>         meta master-max="1" master-node-max="1" clone-max="2"
>     clone-node-max="1" notify="true"
>     clone fencing ipmi-fencing
>     colocation datafs-with-drbd0 inf: web drbd0clone:Master
>     colocation patchfs-with-drbd1 inf: web drbd1clone:Master
>     order datafs-after-drbd0 inf: drbd0clone:promote web:start
>     order patchfs-after-drbd1 inf: drbd1clone:promote web:start
>     property $id="cib-bootstrap-options" \
>         dc-version="1.1.6-3.el6-a02c0f19a00c1eb2527ad38f146ebc0834814558" \
>         cluster-infrastructure="openais" \
>         expected-quorum-votes="2" \
>         stonith-enabled="true" \
>         no-quorum-policy="ignore" \
>         last-lrm-refresh="1328556424"
>     rsc_defaults $id="rsc-options" \
>         resource-stickiness="100"
> 
> Attached is the log file from the time the system started up on the b
> node until the services finished coming online.
> 
> Thanks!
> Davin
> 
> 
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