Disable Tungsten Fabric analytics services

Available since MOSK 23.3 TechPreview

By default, analytics services are part of basic setups for Tungsten Fabric deployments. To obtain a more lightweight setup, you can disable these services through the custom resource of the Tungsten Fabric Operator.

Warning

Disabling of the Tungsten Fabric analytics services requires restart of the data plane services for existing environments and must be planned in advance. While calculating the maintenance window for this operation, take into account the deletion of the analytics DaemonSets and automatic restart of the tf-config, tf-control, and tf-webui pods.

To disable Tungsten Fabric analytics services:

1. Open the TFOperator custom resource for editing:

   API v2 Available since MOSK 24.1

   kubectl -n tf edit tfoperators.tf.mirantis.com openstack-tf
   

   API v1alpha1 Removed in MOSK 25.1

   kubectl -n tf edit tfoperators.operator.tf.mirantis.com openstack-tf
   

2. Disable Tungsten Fabric analytics services in the TFOperator custom resource:

   API v2 Available since MOSK 24.1

   spec:
     services:
       analytics:
         enabled: false
   

   API v1alpha1 Removed in MOSK 25.1

   spec:
     settings:
       disableTFAnalytics: true
   

3. Clean up the Kubernetes resources. To free up the space that has been used by Cassandra, ZooKeeper, and Kafka analytics storage, manually delete the related PVC:

   kubectl -n tf delete pvc -l app=cassandracluster,cassandracluster=tf-cassandra-analytics
   kubectl -n tf delete pvc -l app=tf-zookeeper-nal
   kubectl -n tf delete pvc -l app=tf-kafka
   

4. Remove the tfanalytics=enabled and tfanalyticsdb=enabled labels from nodes, as they are not required by the Tungsten Fabric Operator anymore.

5. Manually restart the vRouter pods:

   Note

   To avoid network disruption, restart the vRouter pods in chunks.

   kubectl -n tf get pod -l app=tf-vrouter-agent
   kubectl -n tf delete pod <POD_NAME>
   

6. Delete terminated nodes from the Tungsten Fabric configuration through the Tungsten Fabric web UI:

   Caution

   With disabled Tungsten Fabric analytics, the Tungsten Fabric web UI may not work properly.

   1. Log in to the Tungsten Fabric web UI.

   2. On Configure > Infrastructure > Nodes > Analytics Nodes, delete all terminated analytics nodes.

   3. On Configure > Infrastructure > Nodes > Database Analytics Nodes, delete all terminated database analytics nodes.

7. Depending on the MOSK version, proceed accordingly:

   MOSK 24.1

   Disable monitoring of the Tungsten Fabric analytics services in StackLight by setting the following parameter in StackLight values of the Cluster object to false:

   tungstenFabricMonitoring:
     analyticsEnabled: false
   

   When done, the monitoring of the Tungsten Fabric analytics components will become disabled and Kafka alerts along with the Kafka dashboard will disappear from StackLight.

   Since MOSK 24.2

   The tungstenFabricMonitoring.analyticsEnabled setting is automatically configured based on the state of the Tungsten Fabric analytics services, which are enabled or disabled.

   However, you can still override this setting. If set manually, the configuration overrides the default behavior and does not reflect the actual state of Tungsten Fabric analytics.

Now, with the Tungsten Fabric analytics services successfully disabled, you have optimized resource utilization and system performance. While these services are deactivated, related alerts may still be present in StackLight. However, do not consider such alerts as indicative of the actual status of the analytics services.