Enabling CQL to connect with Cassandra clusters

Available since MOSK 24.1 TechPreview

To streamline and improve the efficiency of communication between clients and the database, Cassandra is transitioning away from the Thrift protocol in favor of the Cassandra Query Language (CQL) protocol. CQL provides a more user-friendly and SQL-like interface for interacting with the database.

With the move towards CQL, the Thrift-based client drivers are no longer actively supported encouraging the users to migrate to CQL-based client drivers to take advantage of new features and improvements in Cassandra.

By default, MOSK uses the Thrift protocol to connect with Cassandra clusters. To enable the CQL protocol, proceed with one of the following options depending on the Tungsten Fabric Operator API version in use.

API v1alpha1

Define the CONFIGDB_CASSANDRA_DRIVER variable for the tf-analytics, tf-config, and tf-control controllers in the TFOperator custom resource:

spec:
  controllers:
    tf-analytics:
      alarm-gen:
        containers:
          - env:
              - name: CONFIGDB_CASSANDRA_DRIVER
                value: cql
            name: alarm-gen
      api:
        containers:
          - env:
              - name: CONFIGDB_CASSANDRA_DRIVER
                value: cql
            name: api
      collector:
        containers:
          - env:
              - name: CONFIGDB_CASSANDRA_DRIVER
                value: cql
            name: collector
      snmp:
        containers:
          - env:
              - name: CONFIGDB_CASSANDRA_DRIVER
                value: cql
            name: snmp
      topology:
        containers:
          - env:
              - name: CONFIGDB_CASSANDRA_DRIVER
                value: cql
            name: topology
    tf-config:
      api:
        containers:
          - env:
              - name: CONFIGDB_CASSANDRA_DRIVER
                value: cql
            name: api
      devicemgr:
        containers:
          - env:
              - name: CONFIGDB_CASSANDRA_DRIVER
                value: cql
            name: devicemgr
      schema:
        containers:
          - env:
              - name: CONFIGDB_CASSANDRA_DRIVER
                value: cql
            name: schema
      svc-monitor:
        containers:
          - env:
              - name: CONFIGDB_CASSANDRA_DRIVER
                value: cql
            name: svc-monitor
    tf-control:
      control:
        containers:
          - env:
              - name: CONFIGDB_CASSANDRA_DRIVER
                value: cql
            name: control
      dns:
        containers:
          - env:
              - name: CONFIGDB_CASSANDRA_DRIVER
                value: cql
            name: dns

API v2 TechPreview Available since MOSK 24.1

Define the cassandraDriver parameter in the devOptions section of the TFOperator custom resource:

spec:
  devOptions:
    cassandraDriver: cql