Re: Datacenter decommissioning on Cassandra 4.1.4

2024-04-22 Thread Sebastian Marsching
Recently, I successfully used the following procedure when decommissioning a datacenter: 1. Reduced the replication factor for this DC to zero for all keyspaces except the system_auth keyspace. For that keyspace, I reduced the RF to one. 2. Decommissioned all nodes except one in the DC using th

Re: Datacenter decommissioning on Cassandra 4.1.4

2024-04-22 Thread Alain Rodriguez via user
Hi Michalis, It's been a while since I removed a DC for the last time, but I see there is now a protection to avoid accidentally leaving a DC without auth capability. This was introduced in C* 4.1 through CASSANDRA-17478 ( https://issues.apache.org/jira/browse/CASSANDRA-17478). The process of dr