question In Production Level HA Cluster Do we need dedicated servers for JournalNodes and zookepers ? in Archives of Support Questions (Read Only)

In Production Level HA Cluster Do we need dedicated servers for JournalNodes and zookepers ?

dumindatharanga — Mon, 08 Feb 2016 13:43:45 GMT

In Production Level HA Cluster Do we need dedicated servers for JournalNodes and zookepers ? what are the recommendation ?

Re: In Production Level HA Cluster Do we need dedicated servers for JournalNodes and zookepers ?

divakarreddy_a — Mon, 08 Feb 2016 13:52:42 GMT

not really required . we can installed ZK on any master nodes and JN on any data nodes.

Re: In Production Level HA Cluster Do we need dedicated servers for JournalNodes and zookepers ?

rahulpathak109 — Mon, 08 Feb 2016 14:02:07 GMT

@Duminda Jayasuriya

My understanding is it is always a good idea to have separate server for JournalNodes and zookeepers in production environment with HA. Also for cost-effectiveness JournalNodes and zookeepers can be co-hosted. Co-hosing comes with the prize of downtime of all services which are co-hosted.

Both zookeeper and JournalNodes are quorum based system. Co-hosting them with master nodes will give only 2 nodes, rest of the nodes should be hosted on separate machines.

Re: In Production Level HA Cluster Do we need dedicated servers for JournalNodes and zookepers ?

aervits — Mon, 08 Feb 2016 21:11:12 GMT

Zk should have access to dedicated disk but aside from that you can colocated them with master services. The minimum quorum requirement is 3 nodes. @Duminda Jayasuriya

Re: In Production Level HA Cluster Do we need dedicated servers for JournalNodes and zookepers ?

amcbarnett — Mon, 19 Aug 2019 09:35:57 GMT

In addition to putting them on Master Nodes co-located to other resources, the Zookeeper and Journal should be on JBODs... see diagram

Re: In Production Level HA Cluster Do we need dedicated servers for JournalNodes and zookepers ?

dumindatharanga — Tue, 09 Feb 2016 13:32:31 GMT

Thanks understood.