Hi all we are currently running an imply cluster, with 3 masters & query nodes, and 12 data nodes.
I see the following upgrade instructions, which are for zero downtime.
Which calls for this order:
My concern is since we are running the supervisor scripts it is difficult to only upgrade the historicals, followed by overlords etc…
seeing that we have so many nodes, and processes, I was wondering if there is a simpler way to upgrade, perhaps with with downtime?
i.e. could we not stop all our existing nodes, then deploy the new versions to all nodes, and start them up?
or what if we stopped all ingestion processes, then upgraded all the historical nodes 1 at time, then the master nodes, then the query nodes?
would this be ‘safe’?