Changing the IP address of a node

Changing the IP address of a node.

To change the IP address of a node, simply change the IP of node and then restart DataStax Enterprise (DSE).

cassandra.yaml

The location of the cassandra.yaml file depends on the type of installation:

Package installations
Installer-Services installations

/etc/dse/cassandra/cassandra.yaml

Tarball installations
Installer-No Services installations

installation_location/resources/cassandra/conf/cassandra.yaml

Procedure

  1. Stop DSE.
    Tip: If running DataStax Enterprise as a service, be sure to drainthe node.
  2. Replace the old IP address in the cassandra.yaml with the new one.
  3. If the node is a seed node, update the -seeds parameter in the seed_provider list cassandra.yaml file on all nodes.
  4. If the endpoint_snitch is PropertyFileSnitch, add an entry for the new IP address in the cassandra-topology.properties file on all nodes.
    Note: Do NOT remove the entry for the old IP address.
  5. Update the DNS and the local host IP settings.
  6. Start DSE on the local host.
  7. If the using the PropertyFileSnitch, then perform a rolling restart.