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I need to upgrade our redis cluster(s) from v3.2.12 to latest (v6). What would be the easiest route for upgrading?

We run Redis as well as Sentinel on each node.

3 node cluster -> 1 master, 2 slaves

Thank you very much

jacoblom
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1 Answers1

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The upgrade is pretty standard. i would suggest to upgrade in this order.

  1. First upgrade the sentinel nodes which are currently are slaves/replica nodes.
  2. After upgrade is completed, it will sync from master node, note that a node can sync from version 3 to version 6 node but not vice-versa.( You can't go back to earlier version)
  3. Use sentinel to Failover to upgraded node.
  4. Upgrade the old master node.
Rohit Kumar
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  • Dont we have to change the redis.conf file too? I see `slaveof` in Redis version 3 but in Redis version 6 I see `replicaof`. – user557657 Oct 19 '22 at 17:56