lucene-solr-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Otis Gospodnetic <otis.gospodne...@gmail.com>
Subject Re: Minimum HA Setup with SolrCloud
Date Thu, 06 Dec 2012 21:39:44 GMT
1 is the minimum :)
2 makes no sense.
3 must be the most common number in the zoo.

Otis
--
Performance Monitoring - http://sematext.com/spm/index.html
Search Analytics - http://sematext.com/search-analytics/index.html




On Thu, Dec 6, 2012 at 9:46 AM, Jack Krupansky <jack@basetechnology.com>wrote:

> "but if those same machines are running zookeeper, you need 3."
>
> And one of those 3 can go down? I thought 3 was the minimum number of
> zookeepers.
>
> -- Jack Krupansky
>
> -----Original Message----- From: Mark Miller
> Sent: Thursday, December 06, 2012 9:30 AM
> To: solr-user@lucene.apache.org
> Subject: Re: Minimum HA Setup with SolrCloud
>
>
> It depends on if you are running embedded zk or an external zk ensemble.
>
> One leader and a replica is all you need for Solr to allow on machine to
> go down - but if those same machines are running zookeeper, you need 3.
>
> You could also run zookeeper on one external machine and then it would be
> fine if you lost one solr node - but if you the one external zk node went
> down you would lose the ability to do updates until it was brought back up.
>
> - Mark
>
> On Dec 6, 2012, at 2:46 AM, Thomas Heigl <thomas@umschalt.com> wrote:
>
>  Hey all,
>>
>> I'm in the process of migrating a single Solr 4.0 instace to a SolrCloud
>> setup for availability reasons.
>>
>> After studying the wiki page for SolrCloud I'm not sure what the absolute
>> minimum setup is that would allow for one machine to go down.
>>
>> Would it be enough to have one shard with one leader and one replica?
>> Could
>> this setup tolerate one of the instances going down? Or do I need three
>> instance because Zookeeper needs a quorum of instances?
>>
>> Cheers,
>>
>> Thomas
>>
>
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message