Hello, With some inspiration from the Cassandra Summit talk from last year, we are trying to setup a cluster with coordinator-only nodes. We setup join_ring=false in env.sh, disabled auth in YAML and the nodes are able to start just fine. However, we're running into a few problems
1] The nodes marked with join_ring=false continue to store data. Why ? 2] We tried Python driver's whitelistedpolicy. But we notice message like below, so we are not able to send queries to all nodes marked as coordinators. We also changed the Scala driver to support whitelisting, but see the same thing. What are we missing ? 3] Is there any way to concretely tell that only coordinator nodes are getting requests from clients ? We don't have OpsCenter. Thanks ! 2017-05-09 20:45:25,060 [DEBUG] cassandra.cluster: [control connection] Removing host not found in peers metadata: <Host: 10.80.10.128> 2017-05-09 20:45:25,060 [INFO] cassandra.cluster: Cassandra host 10.80.10.128 removed 2017-05-09 20:45:25,060 [DEBUG] cassandra.cluster: Removing host 10.80.10.128 2017-05-09 20:45:25,060 [DEBUG] cassandra.cluster: [control connection] Removing host not found in peers metadata: <Host: 10.80.10.127> 2017-05-09 20:45:25,060 [INFO] cassandra.cluster: Cassandra host 10.80.10.127 removed 2017-05-09 20:45:25,060 [DEBUG] cassandra.cluster: Removing host 10.80.10.127 2017-05-09 20:45:25,060 [DEBUG] cassandra.cluster: [control connection] Removing host not found in peers metadata: <Host: 10.80.10.129> 2017-05-09 20:45:25,060 [INFO] cassandra.cluster: Cassandra host 10.80.10.129 removed 2017-05-09 20:45:25,060 [DEBUG] cassandra.cluster: Removing host 10.80.10.129 2017-05-09 20:45:25,060 [DEBUG] cassandra.cluster: [control connection] Finished fetching ring info 2017-05-09 20:45:25,060 [DEBUG] cassandra.cluster: [control connection] Rebuilding token map due to topology changes 2017-05-09 20:45:25,081 [DEBUG] cassandra.metadata: user functions table not found 2017-05-09 20:45:25,081 [DEBUG] cassandra.metadata: user aggregates table not found 2017-05-09 20:45:25,098 [DEBUG] cassandra.cluster: Control connection created 2017-05-09 20:45:25,099 [DEBUG] cassandra.pool: Initializing connection for host 10.80.10.125 2017-05-09 20:45:25,099 [DEBUG] cassandra.pool: Initializing connection for host 10.80.10.126
