I have a situation where I need to move a server from one DC to another DC. I am using the ProperFileSnitch and my cassandra-topology.properties looks like this.
Server150=CLV:RAC1 Server151=CLV:RAC1 Server152=CLV:RAC1 Server153=DPT:RAC1 Server154=DPT:RAC1 Server155=DPT:RAC1 Server156=DPT:RAC1 Server157=DPT:RAC1 Server158=DPT:RAC1 I need to move Server153 and Server 154 from the DPT DC to the CLV DC. The servers are not going to physically move and the names/IPs will remain the same. Server150=CLV:RAC1 Server151=CLV:RAC1 Server152=CLV:RAC1 Server153=CLV:RAC1 Server154=CLV:RAC1 Server155=DPT:RAC1 Server156=DPT:RAC1 Server157=DPT:RAC1 Server158=DPT:RAC1 What is the best way to do this? Do I just need to change the cassandra-topology.properties and restart the nodes? Do I need to rebalance after? Do I need to decommission the servers one at a time, then re-bootstrap them using the correct DC? Any help would be appreciated. Gene Robichaux Manager, Database Operations 8300 Douglas Avenue I Suite 800 I Dallas, TX 75225 Phone: 214-576-3273
