On Thu, Dec 11, 2008 at 00:21, Daniel DeFreez <[email protected]> wrote: > Hello all, > > I've been playing with heartbeat 2 for a few weeks and have a good handle on > most of the basics, but I am having trouble with some of the subtleties. I'm > trying to prevent a resource from from returning to its preferred node until > resources that are co-located with it have SUCCESSFULLY started - it appears > to be returning during the process of starting these resources.
You need rsc_order constraints. These control how resources start/stop relative to each other. > > I have a two-node cluster with a clone filesystem resource (OCFS2) and /two/ > ip addresses. The two ips weakly prefer to run on separate nodes on the > cluster (for DNS round-robin purposes). I have set a colocation constraint > requiring that the ip resource only be allowed to run where an instance the > ocfs2 clone is (eventually this will be a web cluster). > > When, say, node2 goes down, the ip address correctly fails over to node1. > However, when I bring node 2 back up OCFS often fails to mount without > rebooting (a separate issue). The problem is that the ip address will > temporarily failback to its preferred location for about 10-15 seconds while > ocfs is trying to mount, then will return to its less preferred node when > ocfs actually fails. > > Is there some way to prevent this behavior without setting stickiness such > that I have to manually failback the ip? I want the ip to return to node2, > but only AFTER any colocated resources have successfully started. > > I tried using an order constraint, but that just had the effect of stopping > the ip resource while ocfs was attempting to mount. > > Thanks in advance! > > Here is my cib: > > <cib generated="true" admin_epoch="0" have_quorum="true" ignore_dtd="false" > num_peers="2" cib_feature_revision="1.3" crm_feature_set="2.0" > ccm_transition="83" dc_uuid="b2bef128-5b51-4a72-a807-48297385a8a6" > epoch="383" num_updates="39"> > <configuration> > <crm_config> > <cluster_property_set id="cib-bootstrap-options"> > <attributes> > <nvpair id="cib-bootstrap-options-dc-version" name="dc-version" > value="2.1.3-node: a3184d5240c6e7032aef9cce6e5b7752ded544b3"/> > <nvpair id="cib-bootstrap-options-default-resource-stickiness" > name="default-resource-stickiness" value="1"/> > </attributes> > </cluster_property_set> > <cluster_property_set id="cibbootstrap"> > <attributes> > <nvpair id="cibbootstrap-01" name="transition_idle_timeout" > value="60"/> > <nvpair id="cibbootstrap-02" name="default_resource_stickiness" > value="1"/> > <nvpair id="cibbootstrap-03" > name="default_resource_failure_stickiness" value="-500"/> > <nvpair id="cibbootstrap-04" name="stonith_enabled" value="false"/> > <nvpair id="cibbootstrap-05" name="stonith_action" value="reboot"/> > <nvpair id="cibbootstrap-06" name="symmetric_cluster" > value="true"/> > <nvpair id="cibbootstrap-07" name="no_quorum_policy" value="stop"/> > <nvpair id="cibbootstrap-08" name="stop_orphan_resources" > value="true"/> > <nvpair id="cibbootstrap-09" name="stop_orphan_actions" > value="true"/> > <nvpair id="cibbootstrap-10" name="is_managed_default" > value="true"/> > </attributes> > </cluster_property_set> > </crm_config> > <nodes> > <node id="c5583448-853e-419c-bca9-eb52e8b64c79" uname="atweb01v" > type="normal"/> > <node id="b2bef128-5b51-4a72-a807-48297385a8a6" uname="atweb02v" > type="normal"/> > </nodes> > <resources> > <clone id="ClusterStorage" notify="true" globally_unique="false"> > <instance_attributes id="ClusterStorage"> > <attributes> > <nvpair id="ClusterStorage-01" name="clone_node_max" value="1"/> > <nvpair id="ClusterStorage-02" name="target_role" > value="started"/> > </attributes> > </instance_attributes> > <primitive id="OCFS2" class="ocf" type="Filesystem" > provider="heartbeat"> > <operations> > <op name="monitor" interval="20s" timeout="60s" prereq="nothing" > id="OCFS2-op-01"/> > </operations> > <instance_attributes id="OCFS2"> > <attributes> > <nvpair id="OCFS2-01" name="device" value="/dev/sdb"/> > <nvpair id="OCFS2-02" name="directory" value="/mnt/ocfs2"/> > <nvpair id="OCFS2-03" name="fstype" value="ocfs2"/> > <nvpair id="OCFS2:1_target_role" name="target_role" > value="started"/> > </attributes> > </instance_attributes> > </primitive> > </clone> > <primitive id="ip1" class="ocf" type="IPaddr2" provider="heartbeat"> > <instance_attributes id="0f3f4fc2-354f-42c4-aca9-adfe2a4392a6"> > <attributes> > <nvpair name="ip" value="140.211.89.16" > id="c68ae67b-7860-4309-a478-2c705ab2366b"/> > <nvpair name="nic" value="eth0" > id="f6db2b92-492e-442e-b084-68cc97ab7b46"/> > <nvpair name="cidr_netmask" value="24" > id="cc49f493-8e8c-48f0-bfc5-a24af7071b2c"/> > </attributes> > </instance_attributes> > <operations> > <op id="97f01f09-5322-40c1-a719-bf8b02c312fa" name="monitor" > interval="10s" timeout="20s" start_delay="5s" on_fail="restart"/> > </operations> > </primitive> > <primitive id="ip2" class="ocf" type="IPaddr2" provider="heartbeat"> > <instance_attributes id="74652121-2b53-4d3d-901e-28a2d898a7bc"> > <attributes> > <nvpair name="ip" value="140.211.89.17" > id="bda42825-7e28-4318-99a0-197d2f5216f0"/> > <nvpair name="nic" value="eth0" > id="55cb0faa-c05f-4a52-b1c2-fdfffb09cb12"/> > <nvpair name="cidr_netmask" value="24" > id="74420629-9086-4967-8a29-63b9dfde94a1"/> > </attributes> > </instance_attributes> > <operations> > <op id="47e5eaa3-9472-42cc-942a-f9f1d80f3443" name="monitor" > interval="10s" timeout="20s" start_delay="5s"/> > </operations> > </primitive> > </resources> > <constraints> > <rsc_colocation id="colo_ip1" from="ip1" to="ClusterStorage" > score="INFINITY"/> > <rsc_colocation id="colo_ip2" from="ip2" to="ClusterStorage" > score="INFINITY"/> > <rsc_location id="loc_ip1" rsc="ip1"> > <rule id="pref_ip1" score="100"> > <expression attribute="#uname" operation="eq" value="atweb01v" > id="88ce033e-90fc-4e46-959b-15d198ba0273"/> > </rule> > </rsc_location> > <rsc_location id="loc_ip2" rsc="ip2"> > <rule id="pref_ip2" score="100"> > <expression attribute="#uname" operation="eq" value="atweb02v" > id="876c2018-842a-41c7-8d5e-b16a66c60ea7"/> > </rule> > </rsc_location> > </constraints> > </configuration> > > > > > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems > 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