<div dir="ltr"><div dir="ltr">I did set up POC for Nagios Core on CentOS 7 using drbd+pagemaker for LAN and WAN H.A.</div><div dir="ltr"><br><div>for LAN HA, ie, fail-over Nagios monitoring service with-in same Data Center is doable.</div><div>ocf-agent script for pacemaker was written already. </div><div><a href="https://github.com/ClusterLabs/resource-agents/blob/c36b1e8431e576f3428788b3e645fb53ff75c1fa/heartbeat/nagios">https://github.com/ClusterLabs/resource-agents/blob/c36b1e8431e576f3428788b3e645fb53ff75c1fa/heartbeat/nagios</a> </div><div><br></div><div>But in the end I did not use it since my Nagios core is in vmware farm as a VM which use vcenter's HA to provide hardware level fail-over.</div><div><br></div><div>for WAN HA(fail-over Nagios service over WAN) , I ran into drbd bandwidth issue (10ms ping time) which require proprietary drbd-proxy solution but I didn't pursue further. </div><div><br></div><div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jan 24, 2019 at 11:48 AM Devin Vance <<a href="mailto:devin@linbit.com">devin@linbit.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">On 1/15/19 5:16 AM, Kaushal Shriyan wrote:<br>
> <br>
> On Thu, Dec 27, 2018 at 10:49 PM Kaushal Shriyan <br>
> <<a href="mailto:kaushalshriyan@gmail.com" target="_blank">kaushalshriyan@gmail.com</a> <mailto:<a href="mailto:kaushalshriyan@gmail.com" target="_blank">kaushalshriyan@gmail.com</a>>> wrote:<br>
> <br>
> Hi,<br>
> <br>
> I will appreciate if anyone has done hot/cold setups with DRBD for<br>
> Nagios<br>
> Core(<a href="https://www.nagios.org/downloads/nagios-core/thanks/?skip=1&product_download=nagioscore-source" rel="noreferrer" target="_blank">https://www.nagios.org/downloads/nagios-core/thanks/?skip=1&product_download=nagioscore-source</a>)<br>
> as part of high availability feature. For example if the primary<br>
> node goes down then the secondary node takes care of the Monitoring<br>
> and alert notifications<br>
> <br>
<br>
It has been a year or so since I've done it, but yes it is doable.<br>
<br>
A colleague of mine wrote a guide regarding it. This guide is for the <br>
licensed "XI" version, but the instructions should still apply to the <br>
"Core" version. You can find it here: <a href="https://downloads.linbit.com/" rel="noreferrer" target="_blank">https://downloads.linbit.com/</a> <br>
(titled HA Nagios XI v5 Cluster on RHEL7)<br>
<br>
Personally, I prefer to just run the Nagios system in a VM and make that <br>
VM managed by a Pacemaker cluster for HA.<br>
<br>
Best,<br>
Devin<br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature">T.J. Yang</div>