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<div class="moz-cite-prefix">On 03/13/2019 10:56 AM, Lopez,
Francisco Javier [Global IT] wrote:<br>
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cite="mid:f37ff54f-25be-03b1-bd4f-bf51abdd0f84@solera.com">
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<tt>Hello guys !<br>
<br>
I'm dealing since some time ago with this configuration:<br>
<br>
- Two node cluster.<br>
- Vmware boxes.<br>
- PostgreSql release 10.X: Master/Slave.<br>
<br>
On top of this I've set up Pacemaker/Corosync and RA/PAF.<br>
<br>
Now it's time to play with different fencing scenarios.<br>
I'd like to know from more experienced people about this. Based
on the configuration I have (or similar)<br>
perhaps some of you can tell me, based on your experience, what
kind of fencing sounds more appropriate,<br>
either node or resource level and based on what.<br>
<br>
Any quick reference would help me a lot.<br>
</tt></blockquote>
<br>
<tt>Vmware being your hypervisor you can go<br>
for fence_vmware_rest or fence_vmware_soap<br>
as fence-agents.<br>
<br>
That might depend on your distribution and<br>
which fence-agent-styles are preferred/supported.<br>
<br>
If you don't want fencing talking to your hypervisor<br>
for whatever reason you might think of sparing a<br>
shared disk (outside of your hypervisor or provided<br>
by the hypervisor) and going with sbd (Sbd needs<br>
a shared disk for useful deployments of 2-node clusters.<br>
If you spare more virtual-nodes or deploy qdevice<br>
that gives you 'real quorum' and sbd can be used<br>
without a shared disk.).<br>
As sbd is relying on a watchdog and Vmware doesn't<br>
provide one you would have to go with softdog (software<br>
emulation of a watchdog at least not relying on a<br>
working userland) leaving you with somewhat reduced<br>
reliability of the solution.<br>
<br>
Depending on how your data is stored you might<br>
in addition consider resource-fencing on the storage.<br>
<br>
I'm aware that this doesn't give you an immediate solution<br>
but I hope you'll find a few pointers to be able to<br>
proceed.<br>
<br>
Klaus <br>
</tt>
<blockquote type="cite"
cite="mid:f37ff54f-25be-03b1-bd4f-bf51abdd0f84@solera.com"><tt>
<br>
I reviewed the threads and did not find any specific to this.
I'd like to have this information to better<br>
understand what agents to install and manage.<br>
<br>
Thank you<br>
Javier<br>
<br>
<br>
<br>
</tt>
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