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From Walter Underwood <>
Subject Re: High Availability with two nodes
Date Tue, 26 Feb 2019 15:14:10 GMT
Solr Cloud automatically choose a leader and a follower.

I am not a fan of cold standby hosts, because you don’t really know whether they work. You
have two hosts, so keep them both hot, put a load balancer in front of them, and send all
the traffic to both of them all the time. If one fails, you are still up.

Walter Underwood  (my blog)

> On Feb 26, 2019, at 1:39 AM, Andreas Mock <> wrote:
> Hi all,
> currently we are looking at Apache Solr as a solution
> for searching. One important component is high availability.
> I digged around finding out that HA is built in via
> SolrCloud which means I have to install ZooKeeper in 
> a production environment which needs at least three
> nodes.
> So, now to my problem. I haven't found any documents
> showing a way to get a two node cluster simply for
> HA (active/passive).
> Is there a recommended way or are there any solutions
> out there showing a scenario with Solr Single Server
> combined e.g. DRBD and Pacemaker?
> Any hints and pointers are very welcome.
> Thank you in advance
> Andreas 

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