<div dir="ltr">Thank you very much for the detailed explanation. We will look for another way to determine master/slave status of this application then.</div><div class="gmail_extra"><br><div class="gmail_quote">On 20 September 2017 at 09:20, Tomas Jelinek <span dir="ltr"><<a href="mailto:tojeline@redhat.com" target="_blank">tojeline@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
<br>
Dne 20.9.2017 v 09:03 Tomas Jelinek napsal(a):<span class=""><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
systemd resources cannot be used as master/slave resources. In order to use a resource as a master/slave, the resource must support promote and demote actions [1], which systemd resources don't.<br>
<br>
# pcs resource create test systemd:postfix<br>
# pcs resource master test<br>
# pcs cluster verify -V<br>
error: native_unpack: Resource test:0 is of type systemd and therefore cannot be used as a master/slave resource<br>
error: create_child_clone: Failed unpacking resource test<br>
error: unpack_resources: Failed unpacking master test-master<br>
Errors found during check: config not valid<br>
<br>
You need to use an ocf resource agent (with promote and demote actions implemented) for your resource for this to work.<br>
<br>
Because the resource cannot be unpacked by pacemaker, it is not shown in the "pcs status" output - pcs doesn't get any info about it from pacemaker. This issue has been already discussed. Pacemaker will provide info when such errors occur so pcs will be able to display it. [2]<br>
<br>
The resource may not be running but it is still defined in the configuration:<br>
# pcs resource --full<br>
Master: test-master<br>
Resource: test (class=systemd type=postfix)<br>
Operations: monitor interval=60 timeout=100 (test-monitor-interval-60)<br>
start interval=0s timeout=100 (test-start-interval-0s)<br>
stop interval=0s timeout=100 (test-stop-interval-0s)<br>
<br>
That's why you get an error that the id already exists.<br>
<br>
<br>
I'm going to file a bug against pcs so it won't be possible to master/slave systemd resources as it is not supported anyway.<br>
</blockquote>
<br>
</span><a href="https://bugzilla.redhat.com/show_bug.cgi?id=1493416" rel="noreferrer" target="_blank">https://bugzilla.redhat.com/sh<wbr>ow_bug.cgi?id=1493416</a><div class="HOEnZb"><div class="h5"><br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Regards,<br>
Tomas<br>
<br>
[1]: <a href="http://clusterlabs.org/doc/en-US/Pacemaker/1.1-pcs/html-single/Pacemaker_Explained/index.html#_requirements_for_multi_state_resource_agents" rel="noreferrer" target="_blank">http://clusterlabs.org/doc/en-<wbr>US/Pacemaker/1.1-pcs/html-sing<wbr>le/Pacemaker_Explained/index.<wbr>html#_requirements_for_multi_<wbr>state_resource_agents</a> <br>
[2]: <a href="https://bugzilla.redhat.com/show_bug.cgi?id=1447951" rel="noreferrer" target="_blank">https://bugzilla.redhat.com/sh<wbr>ow_bug.cgi?id=1447951</a><br>
<br>
<br>
Dne 19.9.2017 v 17:13 Tiemen Ruiten napsal(a):<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello,<br>
<br>
We have a 3-node cluster (CentOS 7.4) with several systemd resources configured. One of them I would like to create as a master/slave resource, so following the RedHat documentation:<br>
<br>
pcs resource create ivr systemd:japp@ivr - works, the service is started on one of the nodes.<br>
pcs resource master ivr-master ivr - doesn't work as expected: the service is stopped and the output of pcs resource show doesn't list it anymore. However, if I try the command again, I get an error saying the resource ivr already exists! I have to delete the resource and recreate it to get the service to run.<br>
<br>
pacemaker-libs-1.1.16-12.el7_4<wbr>.2.x86_64<br>
pacemaker-cluster-libs-1.1.16-<wbr>12.el7_4.2.x86_64<br>
pacemaker-1.1.16-12.el7_4.2.x8<wbr>6_64<br>
pacemaker-cli-1.1.16-12.el7_4.<wbr>2.x86_64<br>
corosynclib-2.4.0-9.el7_4.2.x8<wbr>6_64<br>
corosync-2.4.0-9.el7_4.2.x86_6<wbr>4<br>
<br>
Am I doing something wrong?<br>
<br>
-- <br>
Tiemen Ruiten<br>
Systems Engineer<br>
R&D Media<br>
<br>
<br>
______________________________<wbr>_________________<br>
Users mailing list: <a href="mailto:Users@clusterlabs.org" target="_blank">Users@clusterlabs.org</a><br>
<a href="http://lists.clusterlabs.org/mailman/listinfo/users" rel="noreferrer" target="_blank">http://lists.clusterlabs.org/m<wbr>ailman/listinfo/users</a><br>
<br>
Project Home: <a href="http://www.clusterlabs.org" rel="noreferrer" target="_blank">http://www.clusterlabs.org</a><br>
Getting started: <a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" rel="noreferrer" target="_blank">http://www.clusterlabs.org/doc<wbr>/Cluster_from_Scratch.pdf</a><br>
Bugs: <a href="http://bugs.clusterlabs.org" rel="noreferrer" target="_blank">http://bugs.clusterlabs.org</a><br>
<br>
</blockquote>
<br>
______________________________<wbr>_________________<br>
Users mailing list: <a href="mailto:Users@clusterlabs.org" target="_blank">Users@clusterlabs.org</a><br>
<a href="http://lists.clusterlabs.org/mailman/listinfo/users" rel="noreferrer" target="_blank">http://lists.clusterlabs.org/m<wbr>ailman/listinfo/users</a><br>
<br>
Project Home: <a href="http://www.clusterlabs.org" rel="noreferrer" target="_blank">http://www.clusterlabs.org</a><br>
Getting started: <a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" rel="noreferrer" target="_blank">http://www.clusterlabs.org/doc<wbr>/Cluster_from_Scratch.pdf</a><br>
Bugs: <a href="http://bugs.clusterlabs.org" rel="noreferrer" target="_blank">http://bugs.clusterlabs.org</a><br>
</blockquote>
<br>
______________________________<wbr>_________________<br>
Users mailing list: <a href="mailto:Users@clusterlabs.org" target="_blank">Users@clusterlabs.org</a><br>
<a href="http://lists.clusterlabs.org/mailman/listinfo/users" rel="noreferrer" target="_blank">http://lists.clusterlabs.org/m<wbr>ailman/listinfo/users</a><br>
<br>
Project Home: <a href="http://www.clusterlabs.org" rel="noreferrer" target="_blank">http://www.clusterlabs.org</a><br>
Getting started: <a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" rel="noreferrer" target="_blank">http://www.clusterlabs.org/doc<wbr>/Cluster_from_Scratch.pdf</a><br>
Bugs: <a href="http://bugs.clusterlabs.org" rel="noreferrer" target="_blank">http://bugs.clusterlabs.org</a><br>
</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Tiemen Ruiten<br>Systems Engineer<br>R&D Media<br></div></div>
</div>