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).

Where is the cassandra.yaml file?

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

Installation Type Location

Installation Type	Location
Package installations + Installer-Services installations	`/etc/dse/cassandra/cassandra.yaml`
Tarball installations + Installer-No Services installations	`<installation_location>/resources/cassandra/conf/cassandra.yaml`

Package installations + Installer-Services installations

/etc/dse/cassandra/cassandra.yaml

Tarball installations + Installer-No Services installations

<installation_location>/resources/cassandra/conf/cassandra.yaml

Procedure

Stop DSE.

If running DataStax Enterprise as a service, be sure to drain the node.
Replace the old IP address in the cassandra.yaml with the new one.
- listen_address
- broadcast_address
- (Optional if already set) rpc_address
If the node is a seed node, update the -seeds parameter in the seed_provider list cassandra.yaml file on all nodes.
If the endpoint_snitch is PropertyFileSnitch, add an entry for the new IP address in cassandra-topology.properties on all nodes.

Do NOT remove the entry for the old IP address.
Update the DNS and the local host IP settings.
Start DSE on the local host.
If the using the PropertyFileSnitch, then perform a rolling restart.