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<div style="font-size: 14px; font-family: Calibri, sans-serif;">Hi All -</div>
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<div style="font-size: 14px; font-family: Calibri, sans-serif;">I've implemented a simple two-node cluster with DRBD and a couple of network-based Master/Slave resources.</div>
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<div style="font-size: 14px; font-family: Calibri, sans-serif;">Using the ethmonitor RA, I set up failover whenever the Master/Primary node loses link on the specified ethernet physical device by constraining the Master role only on nodes where the ethmon variable
is "1".</div>
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<div style="font-size: 14px; font-family: Calibri, sans-serif;">Something is going wrong with my colocation constraint, however - if I set up the DRBDFS resource to monitor link on eth1, unplugging eth1 on the Primary node causes a failover as expected - all
Master resources are demoted to "slave" and promoted on the opposite node, and the "normal" DRBDFS moves to the other node as expected.</div>
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<div style="font-size: 14px; font-family: Calibri, sans-serif;">However, if I put the same ethmonitor constraint on the network-based Master/Slave resource, only that specific resource fails over - DRBDFS stays in the same location (though it stops) as do the
other Master/Slave resources.</div>
<div style="font-size: 14px; font-family: Calibri, sans-serif;"><br>
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<div style="font-size: 14px; font-family: Calibri, sans-serif;">This *smells* like a constraints issue to me - does anyone know what I might be doing wrong?</div>
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<div style="font-size: 14px; font-family: Calibri, sans-serif;">PCS before:</div>
<div>
<div><font face="Consolas" style="font-size: 10px;">Cluster name: node1.hostname.com_node2.hostname.com</font></div>
<div><font face="Consolas" style="font-size: 10px;">Stack: corosync</font></div>
<div><font face="Consolas" style="font-size: 10px;">Current DC: node2.hostname.com_0 (version 1.1.16-12.el7_4.4-94ff4df) - partition with quorum</font></div>
<div><font face="Consolas" style="font-size: 10px;">Last updated: Tue Mar 20 16:25:47 2018</font></div>
<div><font face="Consolas" style="font-size: 10px;">Last change: Tue Mar 20 16:00:33 2018 by hacluster via crmd on node2.hostname.com_0</font></div>
<div><font face="Consolas" style="font-size: 10px;"><br>
</font></div>
<div><font face="Consolas" style="font-size: 10px;">2 nodes configured</font></div>
<div><font face="Consolas" style="font-size: 10px;">11 resources configured</font></div>
<div><font face="Consolas" style="font-size: 10px;"><br>
</font></div>
<div><font face="Consolas" style="font-size: 10px;">Online: [ node1.hostname.com_0 node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"><br>
</font></div>
<div><font face="Consolas" style="font-size: 10px;">Full list of resources:</font></div>
<div><font face="Consolas" style="font-size: 10px;"><br>
</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Master/Slave Set: drbd.master [drbd.slave]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Masters: [ node1.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Slaves: [ node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> drbdfs (ocf::heartbeat:Filesystem): Started node1.hostname.com_0</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Master/Slave Set: inside-interface-sameip.master [inside-interface-sameip.slave]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Masters: [ node1.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Slaves: [ node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Master/Slave Set: outside-interface-sameip.master [outside-interface-sameip.slave]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Masters: [ node1.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Slaves: [ node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Clone Set: monitor-eth1-clone [monitor-eth1]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Started: [ node1.hostname.com_0 node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Clone Set: monitor-eth2-clone [monitor-eth2]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Started: [ node1.hostname.com_0 node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"><br>
</font></div>
<div><font face="Consolas" style="font-size: 10px;">Daemon Status:</font></div>
<div><font face="Consolas" style="font-size: 10px;"> corosync: active/enabled</font></div>
<div><font face="Consolas" style="font-size: 10px;"> pacemaker: active/enabled</font></div>
<div><font face="Consolas" style="font-size: 10px;"> pcsd: inactive/disabled</font></div>
</div>
<div style="font-size: 14px; font-family: Calibri, sans-serif;"><br>
</div>
<div style="font-size: 14px; font-family: Calibri, sans-serif;">PCS after:</div>
<div>
<div><font face="Consolas" style="font-size: 10px;">Cluster name: node1.hostname.com_node2.hostname.com</font></div>
<div><font face="Consolas" style="font-size: 10px;">Stack: corosync</font></div>
<div><font face="Consolas" style="font-size: 10px;">Current DC: node2.hostname.com_0 (version 1.1.16-12.el7_4.4-94ff4df) - partition with quorum</font></div>
<div><font face="Consolas" style="font-size: 10px;">Last updated: Tue Mar 20 16:29:40 2018</font></div>
<div><font face="Consolas" style="font-size: 10px;">Last change: Tue Mar 20 16:00:33 2018 by hacluster via crmd on node2.hostname.com_0</font></div>
<div><font face="Consolas" style="font-size: 10px;"><br>
</font></div>
<div><font face="Consolas" style="font-size: 10px;">2 nodes configured</font></div>
<div><font face="Consolas" style="font-size: 10px;">11 resources configured</font></div>
<div><font face="Consolas" style="font-size: 10px;"><br>
</font></div>
<div><font face="Consolas" style="font-size: 10px;">Online: [ node1.hostname.com_0 node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"><br>
</font></div>
<div><font face="Consolas" style="font-size: 10px;">Full list of resources:</font></div>
<div><font face="Consolas" style="font-size: 10px;"><br>
</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Master/Slave Set: drbd.master [drbd.slave]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Masters: [ node1.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Slaves: [ node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> drbdfs (ocf::heartbeat:Filesystem): Stopped</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Master/Slave Set: inside-interface-sameip.master [inside-interface-sameip.slave]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Masters: [ node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Stopped: [ node1.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Master/Slave Set: outside-interface-sameip.master [outside-interface-sameip.slave]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Masters: [ node1.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Slaves: [ node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Clone Set: monitor-eth1-clone [monitor-eth1]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Started: [ node1.hostname.com_0 node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Clone Set: monitor-eth2-clone [monitor-eth2]</font></div>
<div><font face="Consolas" style="font-size: 10px;"> Started: [ node1.hostname.com_0 node2.hostname.com_0 ]</font></div>
<div><font face="Consolas" style="font-size: 10px;"><br>
</font></div>
<div><font face="Consolas" style="font-size: 10px;">Daemon Status:</font></div>
<div><font face="Consolas" style="font-size: 10px;"> corosync: active/enabled</font></div>
<div><font face="Consolas" style="font-size: 10px;"> pacemaker: active/enabled</font></div>
<div><font face="Consolas" style="font-size: 10px;"> pcsd: inactive/disabled</font></div>
</div>
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<div style="font-size: 14px; font-family: Calibri, sans-serif;">This is the "constraints" section of my CIB (full CIB is attached):</div>
<div>
<div><font face="Consolas" style="font-size: 10px;"> <rsc_colocation id="pcs_rsc_colocation_set_drbdfs_set_drbd.master_inside-interface-sameip.master_outside-interface-sameip.master" score="INFINITY"></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_set id="pcs_rsc_set_drbdfs" sequential="false"></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_ref id="drbdfs"/></font></div>
<div><font face="Consolas" style="font-size: 10px;"> </resource_set></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_set id="pcs_rsc_set_drbd.master_inside-interface-sameip.master_outside-interface-sameip.master" role="Master" sequential="false"></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_ref id="drbd.master"/></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_ref id="inside-interface-sameip.master"/></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_ref id="outside-interface-sameip.master"/></font></div>
<div><font face="Consolas" style="font-size: 10px;"> </resource_set></font></div>
<div><font face="Consolas" style="font-size: 10px;"> </rsc_colocation></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <rsc_order id="pcs_rsc_order_set_drbd.master_inside-interface-sameip.master_outside-interface-sameip.master_set_drbdfs" kind="Serialize" symmetrical="false"></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_set action="promote" id="pcs_rsc_set_drbd.master_inside-interface-sameip.master_outside-interface-sameip.master-1" role="Master"></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_ref id="drbd.master"/></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_ref id="inside-interface-sameip.master"/></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_ref id="outside-interface-sameip.master"/></font></div>
<div><font face="Consolas" style="font-size: 10px;"> </resource_set></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_set id="pcs_rsc_set_drbdfs-1"></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <resource_ref id="drbdfs"/></font></div>
<div><font face="Consolas" style="font-size: 10px;"> </resource_set></font></div>
<div><font face="Consolas" style="font-size: 10px;"> </rsc_order></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <rsc_location id="location-inside-interface-sameip.master" rsc="inside-interface-sameip.master"></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <rule id="location-inside-interface-sameip.master-rule" score="-INFINITY"></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <expression attribute="ethmon_result-eth1" id="location-inside-interface-sameip.master-rule-expr" operation="ne" value="1"/></font></div>
<div><font face="Consolas" style="font-size: 10px;"> </rule></font></div>
<div><font face="Consolas" style="font-size: 10px;"> </rsc_location></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <rsc_location id="location-outside-interface-sameip.master" rsc="outside-interface-sameip.master"></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <rule id="location-outside-interface-sameip.master-rule" score="-INFINITY"></font></div>
<div><font face="Consolas" style="font-size: 10px;"> <expression attribute="ethmon_result-eth2" id="location-outside-interface-sameip.master-rule-expr" operation="ne" value="1"/></font></div>
<div><font face="Consolas" style="font-size: 10px;"> </rule></font></div>
<div><font face="Consolas" style="font-size: 10px;"> </rsc_location></font></div>
<div><font face="Consolas" style="font-size: 10px;"> </constraints</font><font face="Calibri,sans-serif" style="font-size: 14px;">></font></div>
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