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<p class="MsoNormal"><span lang="EN-GB" style="font-size:10.5pt;color:black">Hello</span><span style="font-size:10.5pt;color:black">,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">Currently I’ve tried to setup a 3 node asymmetric cluster, with the 3th node only being used as a tie breaker.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">monnod01 & monnod02 :<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo1"><![if !supportLists]><span lang="EN-US" style="font-size:10.5pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.5pt;color:black">centos 7.3<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo1"><![if !supportLists]><span lang="EN-US" style="font-size:10.5pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.5pt;color:black">pacemaker-1.1.15-11.el7_3.2.x86_64,
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo1"><![if !supportLists]><span lang="EN-US" style="font-size:10.5pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.5pt;color:black">corosync-2.4.0-4.el7.x86_64<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo1"><![if !supportLists]><span lang="EN-US" style="font-size:10.5pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.5pt;color:black">drbd84-utils-8.9.8-1.el7.elrepo.x86_64<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo1"><![if !supportLists]><span lang="EN-US" style="font-size:10.5pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.5pt;color:black">PostgreSQL 9.4<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">monquor:
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US" style="font-size:10.5pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.5pt;color:black">centos 7.3<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US" style="font-size:10.5pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.5pt;color:black">pacemaker-1.1.15-11.el7_3.2.x86_64<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US" style="font-size:10.5pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.5pt;color:black">corosync-2.4.0-4.el7.x86_64<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US" style="font-size:10.5pt;font-family:Symbol;color:black"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.5pt;color:black">no drbd installed.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">Now I’ve noticed that the master/slave drbd resource only activates the master side and not also the slave side allowing the drbd to actually sync between each other. I’ve setup a
2 node cluster, and there it works without any issue.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">But when I try to do the same, but with a 3th node, and
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black">pcs property set symmetric-cluster=false<o:p></o:p></span></i></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">For some reason it keeps adding the 3the node as a stopped resource in the master slave setup and it doesn’t mention a slave resource.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black">pcs status<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black">Online: [ monnod01 monnod02 monquor ]<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black">Full list of resources:<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black">ClusterIP (ocf::heartbeat:IPaddr2): Started monnod01<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black">Master/Slave Set: drbd-demo-resource-clone [drbd-demo-resource]<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black"> Masters: [ monnod01 ]<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black"> Stopped: [ monquor ]<o:p></o:p></span></i></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">Resource created with the following<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black">pcs -f drbd_cfg resource create drbd-demo-resource ocf:linbit:drbd drbd_resource=drbd-demo op monitor interval=10s<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black">pcs -f drbd_cfg resource master drbd-demo-resource-clone drbd-demo-resource master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true<o:p></o:p></span></i></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">Even though I’ve used location constraints on the master slave resource allowing it only access to the 2 nodes.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black">[root@monnod01 ~]# pcs constraint<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black"> Resource: drbd-demo-resource-clone<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black"> Enabled on: monnod01 (score:INFINITY)<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.5pt;color:black"> Enabled on: monnod02 (score:INFINITY)<o:p></o:p></span></i></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">The actual failover itself works, so it activates the DRBD disk, mounts it and starts up the db service which access the files on this drbd disk.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">But since the slave drbd is never started, it’ll never actually perform the drbd sync between the disks.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">What am I missing to actually make the master/slave resource ignore the 3 node and startup the master and slave resource ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">Does DRBD need to be installed on the 3th node as well ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black">I’ve put the complete output of the commands in the attachment of the mail.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.5pt;color:#4D555B;mso-fareast-language:NL-BE">Met vriendelijke groeten / Meilleures salutations / Best regards</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:NL-BE"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.5pt;color:#2C3034;mso-fareast-language:NL-BE">Kristof Bruyninckx</span></b><span style="font-size:11.5pt;color:#2C3034;mso-fareast-language:NL-BE">
</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:NL-BE"><br>
</span><b><span style="font-size:10.5pt;color:#9BB0B7;mso-fareast-language:NL-BE">System Engineer</span></b><span style="font-size:10.5pt;color:#9BB0B7;mso-fareast-language:NL-BE">
</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:NL-BE"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black;mso-fareast-language:NL-BE"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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