• cassandra-topologies.properties file
  • Example

    cassandra-topologies.properties file

    PropertyFileSnitch snitch option uses the cassandra-topologies.properties configuration file to determine which datacenters and racks cluster nodes belong to. If other snitches are used, the cassandra-rackdc.properties must be used. The snitch determines network topology (proximity by rack and datacenter) so that requests are routed efficiently and allows the database to distribute replicas evenly. Include every node in the cluster in the properties file, defining your datacenter names as in the keyspace definition. The datacenter and rack names are case-sensitive. cassandra-topologies.properties file must be copied identically to every node in the cluster.

    Example

    This example uses three datacenters:
    1. # datacenter One175.56.12.105=DC1:RAC1175.50.13.200=DC1:RAC1175.54.35.197=DC1:RAC1120.53.24.101=DC1:RAC2120.55.16.200=DC1:RAC2120.57.102.103=DC1:RAC2# datacenter Two110.56.12.120=DC2:RAC1110.50.13.201=DC2:RAC1110.54.35.184=DC2:RAC150.33.23.120=DC2:RAC250.45.14.220=DC2:RAC250.17.10.203=DC2:RAC2# datacenter Three172.106.12.120=DC3:RAC1172.106.12.121=DC3:RAC1172.106.12.122=DC3:RAC1# default for unknown nodesdefault =DC3:RAC1