Apache Cassandra™ 1.2


The GossipingPropertyFileSnitch defines a local node's data center and rack; it uses gossip for propagating this information to other nodes. The conf/cassandra-rackdc.properties file defines the default data center and rack used by this snitch:

dc =DC1
 rack =RAC1

The location of the conf directory depends on the type of installation; see Locations of the configuration files or DataStax Enterprise File Locations.

To migrate from the PropertyFileSnitch to the GossipingPropertyFileSnitch, update one node at a time to allow gossip time to propagate. The PropertyFileSnitch is used as a fallback when cassandra-topologies.properties is present.