Yes. Put a proxy to hold the solr instances on your server, and simply point solrj to that proxy which has autofailover abilities already built in and you will instantly drop down the server list of one fails to respond.
> On Oct 8, 2021, at 2:44 AM, HU Dong <itechb...@gmail.com> wrote: > > Hi, > > We're facing similar situations. If "run multiple fully independent > clusters" is the recommended solution, is there any recommended way to do > disaster recovery during query time? > > In our production environment, we're using solrj as the client. What comes > to my mind is declaring two client instances, each with one solrcloud > cluster configured. During search, try the first client and fallback to the > second if it fails. Is there any better way? > >> On Wed, Sep 15, 2021 at 7:25 PM Eric Pugh <ep...@opensourceconnections.com> >> wrote: >> >> I don’t think that Solr really provides (yet!) a great solution across >> datacenter. I lean towards, if you want to run in multiple datacenters, >> just run multiple fully independent clusters, and feed them from a common >> queue. That way, if something bad happens in one area, you don’t have the >> other area trying to connect/communicate across a barrier. >> >> >> >>> On Sep 15, 2021, at 6:02 AM, Christian Pfarr <z0lt...@pm.me.INVALID> >> wrote: >>> >>> You can use autoscaling Feature to achieve this. We currently use it for >> balancing nodes within a Datacenter, but should also work with different AZ >> by providing a system property. >>> >>> >>> >> https://solr.apache.org/guide/8_7/solrcloud-autoscaling-policy-preferences.html#place-replicas-based-on-a-system-property >> < >> https://solr.apache.org/guide/8_7/solrcloud-autoscaling-policy-preferences.html#place-replicas-based-on-a-system-property >>> >>> >>> >>> combine 3 AZ rules with 33% each . >>> >>> >>> >> https://solr.apache.org/guide/8_7/solrcloud-autoscaling-policy-preferences.html#multiple-percentage-rules >> < >> https://solr.apache.org/guide/8_7/solrcloud-autoscaling-policy-preferences.html#multiple-percentage-rules >>> >>> >>> >>> Not totally sure if it works that way, but you can give it a try. >>> >>> >>> Regards, >>> >>> Christian >>> >>> >>> >>> >>> -------- Original-Nachricht -------- >>> Am 15. Sept. 2021, 07:44, Walter Underwood schrieb: >>> >>> You need three data centers. We split our Zookeeper ensemble across >> three AWS availability zones. >>> >>> sunder >>> >>> Sent from my iPad >>> >>>> On Sep 14, 2021, at 10:28 PM, HariBabu kuruva < >> hari2708.kur...@gmail.com> wrote: >>>> >>>> Hi All, >>>> >>>> We have Solr cloud running on 10 nodes with Zookeeper running on 5 >> nodes. >>>> They are running across 2 data centers. >>>> >>>> As part of high availability we would like to run solr so that it >> should >>>> sustain even if one data center goes down. >>>> >>>> How can we achieve this approach as we need to maintain the Quorum >> rule for >>>> Zookeepers. >>>> >>>> Please advise >>>> >>>> -- >>>> >>>> Thanks and Regards, >>>> Hari >>>> Mobile:9790756568 >>> >>> <publickey - EmailAddress(s=z0lt...@pm.me) - 0xF0E154C5.asc> >> >> _______________________ >> Eric Pugh | Founder & CEO | OpenSource Connections, LLC | 434.466.1467 | >> http://www.opensourceconnections.com < >> http://www.opensourceconnections.com/> | My Free/Busy < >> http://tinyurl.com/eric-cal> >> Co-Author: Apache Solr Enterprise Search Server, 3rd Ed < >> https://www.packtpub.com/big-data-and-business-intelligence/apache-solr-enterprise-search-server-third-edition-raw> >> >> This e-mail and all contents, including attachments, is considered to be >> Company Confidential unless explicitly stated otherwise, regardless of >> whether attachments are marked as such. >> >> > > -- > Regards, > Dong
