Hi, The answer to your question on 'merge Cassandra racks' is, the only safe way to migrate nodes across physical racks is to perform a DC migration. This does not include decommissioning and re-adding nodes. It should be done if the system is stable and do not have other issues.
Talking about unique rack situation, why have you run out of racks ? Are you currently installing each node on a new rack at the moment ? There could be simpler alternatives depending upon your rack/data centre situation. Regards, Anup Shirolkar On Fri, 26 Oct 2018 at 04:52, Ian Spence <ian.spe...@globalrelay.net> wrote: > Environment: Cassandra: 2.2.9, JRE: 1.8.0_74, CentOS 6/7 > > We have two DCs. In DC1 we have 3 RACs and in DC2 we have 6. > > Because we're in a physical environment (not virtual or cloud based), > we've run > short on unique rack space in DC2 and need to fix the layout problems. > > Is it possible to somehow merge Cassandra racks without having to > decommission > the nodes and re-add them to the cluster one by one? Or is that the > correct way to accomplish this? > > Thanks > >
