[Pacemaker] No resource failback with no stickiness - why ?

[Andreas Kurz]

Hello,

On 02/18/2012 03:15 PM, Sébastien ROHAUT wrote:
> Hi,
> 
> I'm using Pacemaker 1.1.6 and corosync 1.4.2 under Fedora Core 16, using
> default rpms from repositories.
> 
> I'm trying to get a working Pacemaker cluster and I'm testing it by
> creating the "cluster from cratch configuration" from
> http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf.
> <http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf>
> 
> I already worked with pacemaker 1.0.x two years ago, and it worked well
> (with the older documentation).
> 
> I'm encountering a problem. I added my IPAddr resource and tried
> failvover/failback. So I stop my first node, and my resource moves to
> node2. After a minute I restart node1, but my resource doesn't come
> back, my resource stays on node2.

Without any constraints the cluster is free to move/locate resources
wherever it likes ... base policy is to balance all resources evenly
over available nodes ... you only have one resource -- cluster decides
to leave it as it is.

> 
> As explained page 49, my resource should go back to node1. I didn't
> apply any stickiness value to my resource or in rsc_default. Did the
> behavior changed in this release ?
> 
> How to make it working ?

Define a location constraint, preferring node1.

Regards,
Andreas

-- 
Need help with Pacemaker?
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> 
> Thanks for your help.
> 
> S. ROHAUT
> 
> ptest result :
> # ptest -sL
> Allocation scores:
> native_color: apacheIP allocation score on node1: 0
> native_color: apacheIP allocation score on node2: 0
> 
> 
> Here is my actual conf :
> # crm configure show
> node node1
> node node2
> primitive apacheIP ocf:heartbeat:IPaddr \
>         params ip="192.168.1.80" cidr_netmask="32" nic="eth0" \
>         op monitor interval="30s" \
>         meta target-role="Started"
> property $id="cib-bootstrap-options" \
>         dc-version="1.1.6-4.fc16-89678d4947c5bd466e2f31acd58ea4e1edb854d5" \
>         cluster-infrastructure="openais" \
>         expected-quorum-votes="2" \
>         stonith-enabled="false" \
>         no-quorum-policy="ignore"
> 
> In XML :
> # crm configure show xml
> <?xml version="1.0" ?>
> <cib admin_epoch="0" cib-last-written="Sat Feb 18 13:10:33 2012"
> crm_feature_set="3.0.5" dc-uuid="node1" epoch="34" have-quorum="1"
> num_updates="87" update-client="cibadmin" update-origin="node1"
> validate-with="pacemaker-1.2">
>   <configuration>
>     <crm_config>
>       <cluster_property_set id="cib-bootstrap-options">
>         <nvpair id="cib-bootstrap-options-dc-version" name="dc-version"
> value="1.1.6-4.fc16-89678d4947c5bd466e2f31acd58ea4e1edb854d5"/>
>         <nvpair id="cib-bootstrap-options-cluster-infrastructure"
> name="cluster-infrastructure" value="openais"/>
>         <nvpair id="cib-bootstrap-options-expected-quorum-votes"
> name="expected-quorum-votes" value="2"/>
>         <nvpair id="cib-bootstrap-options-stonith-enabled"
> name="stonith-enabled" value="false"/>
>         <nvpair id="cib-bootstrap-options-no-quorum-policy"
> name="no-quorum-policy" value="ignore"/>
>       </cluster_property_set>
>     </crm_config>
>     <nodes>
>       <node id="node1" type="normal" uname="node1"/>
>       <node id="node2" type="normal" uname="node2"/>
>     </nodes>
>     <resources>
>       <primitive class="ocf" id="apacheIP" provider="heartbeat"
> type="IPaddr">
>         <instance_attributes id="apacheIP-instance_attributes">
>           <nvpair id="apacheIP-instance_attributes-ip" name="ip"
> value="192.168.1.80"/>
>           <nvpair id="apacheIP-instance_attributes-cidr_netmask"
> name="cidr_netmask" value="32"/>
>           <nvpair id="apacheIP-instance_attributes-nic" name="nic"
> value="eth0"/>
>         </instance_attributes>
>         <operations>
>           <op id="apacheIP-monitor-30s" interval="30s" name="monitor"/>
>         </operations>
>         <meta_attributes id="apacheIP-meta_attributes">
>           <nvpair id="apacheIP-meta_attributes-target-role"
> name="target-role" value="Started"/>
>         </meta_attributes>
>       </primitive>
>     </resources>
>     <constraints/>
>   </configuration>
> </cib>
> 
> 
> 
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> 
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