GossipingPropertyFileSnitch
Automatically updates all nodes using gossip when adding new nodes and is recommended for production.
This snitch is recommended for production. It uses rack and datacenter information for the local node defined in the cassandra-rackdc.properties file and propagates this information to other nodes via gossip.
The configuration for the GossipingPropertyFileSnitch is contained in the cassandra-rackdc.properties file.
Package installations | /etc/cassandra/cassandra-rackdc.properties |
Tarball installations | install_location/conf/cassandra-rackdc.properties |
- Define the datacenter and Rack that include this node. The
default
settings:
dc=DC1 rack=RAC1
Note: datacenter and rack names are case-sensitive. -
To save bandwidth, add the
prefer_local=true
option. This option tells Cassandra to use the local IP address when communication is not across different datacenters.
Migrating from the PropertyFileSnitch to the GossipingPropertyFileSnitch
To allow migration from the PropertyFileSnitch, the GossipingPropertyFileSnitch uses the cassandra-topology.properties file when present. Delete the file after the migration is complete. For more information about migration, see Switching snitches.
GossipingPropertyFileSnitch
always loads
cassandra-topology.properties when that
file is present. Remove the file from each node on any new cluster
or any cluster migrated from the
PropertyFileSnitch
.