<div dir="ltr"><div>Hi, Citron.</div><div><br></div><div>Based on your description, it sounds like some resources **might** be moving from node 1 to node 2, failing on node 2, and then moving back to node 1. If that's what's happening (and even if it's not), then it's probably smart to set some resource stickiness as a resource default. The below command sets a resource stickiness score of 1.<br></div><div><br></div><div> # pcs resource defaults resource-stickiness=1<br></div><div><br></div><div>Also note that the "default-resource-stickiness" cluster property is deprecated and should not be used.</div><div><br></div><div>Finally, an explicit default resource stickiness score of 0 can interfere with the placement of cloned resource instances. If you don't want any stickiness, then it's better to leave stickiness unset. That way, primitives will have a stickiness of 0, but clone instances will have a stickiness of 1.<br></div><div><br></div><div>If adding stickiness does not resolve the issue, can you share your cluster configuration and some logs that show the issue happening? Off the top of my head I'm not sure why resources would start and stop on node 2 without moving away from node1, unless they're clone instances that are starting and then failing a monitor operation on node 2.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Aug 26, 2020 at 8:42 AM Citron Vert <<a href="mailto:citron_vert@hotmail.com">citron_vert@hotmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Hello,<br>
I am contacting you because I have a problem with my cluster and I
cannot find (nor understand) any information that can help me.</p>
<p>I have a 2 nodes cluster (pacemaker, corosync, pcs) installed on
CentOS 7 with a set of configuration.<br>
Everything seems to works fine, but here is what happens:</p>
<ul>
<li>Node1 and Node2 are running well with Node1 as primary<br>
</li>
<li>I reboot Node2 wich is passive (no changes on Node1)</li>
<li>Node2 comes back in the cluster as passive<br>
</li>
<li>corosync logs shows resources getting started then stopped on
Node2</li>
<li>"crm_mon" command shows some ressources on Node1 getting
restarted <br>
</li>
</ul>
<p>I don't understand how it should work.<br>
If a node comes back, and becomes passive (since Node1 is running
primary), there is no reason for the resources to be started then
stopped on the new passive node ?<br>
</p>
<p>One of my resources becomes unstable because it gets started and
then stoped too quickly on Node2, wich seems to make it restart on
Node1 without a failover.</p>
<p>I tried several things and solution proposed by different sites
and forums but without success.</p>
<p><br>
</p>
<p>Is there a way so that the node, which joins the cluster as
passive, does not start its own resources ?</p>
<p><br>
</p>
<p>thanks in advance</p>
<p><br>
</p>
<p>Here are some information just in case :</p>
<div style="color:rgb(212,212,212);background-color:rgb(30,30,30);font-family:Consolas,"Courier New",monospace;font-weight:normal;font-size:14px;line-height:19px;white-space:pre-wrap"><div><span style="color:rgb(212,212,212)">$ rpm -qa | grep -E </span><span style="color:rgb(206,145,120)">"corosync|pacemaker|pcs"</span></div><div><span style="color:rgb(212,212,212)"> corosync-2.4.5-4.el7.x86_64</span></div><div><span style="color:rgb(212,212,212)"> pacemaker-cli-1.1.21-4.el7.x86_64</span></div><div><span style="color:rgb(212,212,212)"> pacemaker-1.1.21-4.el7.x86_64</span></div><div><span style="color:rgb(212,212,212)"> pcs-0.9.168-4.el7.centos.x86_64</span></div><div><span style="color:rgb(212,212,212)"> corosynclib-2.4.5-4.el7.x86_64</span></div><div><span style="color:rgb(212,212,212)"> pacemaker-libs-1.1.21-4.el7.x86_64</span></div><div><span style="color:rgb(212,212,212)"> pacemaker-cluster-libs-1.1.21-4.el7.x86_64</span></div></div>
<p><br>
</p>
<div style="color:rgb(212,212,212);background-color:rgb(30,30,30);font-family:Consolas,"Courier New",monospace;font-weight:normal;font-size:14px;line-height:19px;white-space:pre-wrap"><div><span style="color:rgb(212,212,212)"> <nvpair id=</span><span style="color:rgb(206,145,120)">"cib-bootstrap-options-stonith-enabled"</span><span style="color:rgb(212,212,212)"> name=</span><span style="color:rgb(206,145,120)">"stonith-enabled"</span><span style="color:rgb(212,212,212)"> value=</span><span style="color:rgb(206,145,120)">"false"</span><span style="color:rgb(212,212,212)">/></span></div><div><span style="color:rgb(212,212,212)"> <nvpair id=</span><span style="color:rgb(206,145,120)">"cib-bootstrap-options-no-quorum-policy"</span><span style="color:rgb(212,212,212)"> name=</span><span style="color:rgb(206,145,120)">"no-quorum-policy"</span><span style="color:rgb(212,212,212)"> value=</span><span style="color:rgb(206,145,120)">"ignore"</span><span style="color:rgb(212,212,212)">/></span></div><div><span style="color:rgb(212,212,212)"> <nvpair id=</span><span style="color:rgb(206,145,120)">"cib-bootstrap-options-dc-deadtime"</span><span style="color:rgb(212,212,212)"> name=</span><span style="color:rgb(206,145,120)">"dc-deadtime"</span><span style="color:rgb(212,212,212)"> value=</span><span style="color:rgb(206,145,120)">"120s"</span><span style="color:rgb(212,212,212)">/></span></div><div><span style="color:rgb(212,212,212)"> <nvpair id=</span><span style="color:rgb(206,145,120)">"cib-bootstrap-options-have-watchdog"</span><span style="color:rgb(212,212,212)"> name=</span><span style="color:rgb(206,145,120)">"have-watchdog"</span><span style="color:rgb(212,212,212)"> value=</span><span style="color:rgb(206,145,120)">"false"</span><span style="color:rgb(212,212,212)">/></span></div><div><span style="color:rgb(212,212,212)"> <nvpair id=</span><span style="color:rgb(206,145,120)">"cib-bootstrap-options-dc-version"</span><span style="color:rgb(212,212,212)"> name=</span><span style="color:rgb(206,145,120)">"dc-version"</span><span style="color:rgb(212,212,212)"> value=</span><span style="color:rgb(206,145,120)">"1.1.21-4.el7-f14e36fd43"</span><span style="color:rgb(212,212,212)">/></span></div><div><span style="color:rgb(212,212,212)"> <nvpair id=</span><span style="color:rgb(206,145,120)">"cib-bootstrap-options-cluster-infrastructure"</span><span style="color:rgb(212,212,212)"> name=</span><span style="color:rgb(206,145,120)">"cluster-infrastructure"</span><span style="color:rgb(212,212,212)"> value=</span><span style="color:rgb(206,145,120)">"corosync"</span><span style="color:rgb(212,212,212)">/></span></div><div><span style="color:rgb(212,212,212)"> <nvpair id=</span><span style="color:rgb(206,145,120)">"cib-bootstrap-options-cluster-name"</span><span style="color:rgb(212,212,212)"> name=</span><span style="color:rgb(206,145,120)">"cluster-name"</span><span style="color:rgb(212,212,212)"> value=</span><span style="color:rgb(206,145,120)">"CLUSTER"</span><span style="color:rgb(212,212,212)">/></span></div><div><span style="color:rgb(212,212,212)"> <nvpair id=</span><span style="color:rgb(206,145,120)">"cib-bootstrap-options-last-lrm-refresh"</span><span style="color:rgb(212,212,212)"> name=</span><span style="color:rgb(206,145,120)">"last-lrm-refresh"</span><span style="color:rgb(212,212,212)"> value=</span><span style="color:rgb(206,145,120)">"1598446314"</span><span style="color:rgb(212,212,212)">/></span></div><div><span style="color:rgb(212,212,212)"> <nvpair id=</span><span style="color:rgb(206,145,120)">"cib-bootstrap-options-default-resource-stickiness"</span><span style="color:rgb(212,212,212)"> name=</span><span style="color:rgb(206,145,120)">"default-resource-stickiness"</span><span style="color:rgb(212,212,212)"> value=</span><span style="color:rgb(206,145,120)">"0"</span><span style="color:rgb(212,212,212)">/></span></div></div>
<p><br>
</p>
<p><br>
</p>
<p><br>
</p>
</div>
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</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div>Regards,<br><br></div>Reid Wahl, RHCA<br></div><div>Software Maintenance Engineer, Red Hat<br></div>CEE - Platform Support Delivery - ClusterHA</div></div></div></div></div></div></div></div></div></div></div></div></div></div>