Hi everyone, with discussion about reducing default vnodes in version 4.0 I would like to ask, what would be optimal procedure to perform reduction of vnodes in existing 3.11.x cluster which was set up with default value 256. Cluster has 2 DC with 5 nodes each and RF=3. There is one more restriction, I could not add more servers, nor to create additional DC, everything is physical. This should be done without downtime.
My idea for such procedure would be for each node: - decommission node - set auto_bootstrap to true and vnodes to 4 - start and wait till node joins cluster - run cleanup on rest of nodes in cluster - run repair on whole cluster (not sure if needed after cleanup) - set auto_bootstrap to false repeat for each node rolling restart of cluster cluster repair Is this sounds right ? My concern is that after decommission, node will start on the same IP which could create some confusion. Regards, Maxim.
