CassandraCluster Status

You can request kubernetes Object cassandracluster representing the Cassandra cluster to retrieve information about it's status :

$ kubectl describe cassandracluster cassandra
...
status:
   Cassandra Node Status:
     cassandra-demo-dc1-rack1-0:
      Host Id:  ca716bef-dc68-427d-be27-b4eeede1e072
      Node Ip:  10.100.150.51
     cassandra-demo-dc1-rack1-1:
      Host Id:  3528d662-e4a8-4fb6-88f6-3f21056df7ea
      Node Ip:  10.100.150.39
     cassandra-demo-dc1-rack1-2:
      Host Id:  a1d1e7fa-8073-408c-94c1-e3678013f90f
      Node Ip:  10.100.150.38
     cassandra-demo-dc1-rack2-0:
      Host Id:  83ea3410-db00-47fe-9051-e9f877ce5e63
      Node Ip:  10.100.150.111
     cassandra-demo-dc1-rack2-1:
      Host Id:  200bf115-5caf-4218-8e84-e804296c5026
      Node Ip:  10.100.150.108
     cassandra-demo-dc1-rack2-2:
      Host Id:  27ee7414-a695-4744-bf39-41db9d23ddb2
      Node Ip:  10.100.150.110
  cassandraRackStatus:
    dc1-rack1:
      cassandraLastAction:
        Name: ScaleUp
        endTime: 2018-07-12T14:10:28Z
        startTime: 2018-07-12T14:09:34Z
        status: Done
      phase: Running
      podLastOperation:
        Name: cleanup
        endTime: 2018-07-12T14:07:35Z
        podsOK:
        - cassandra-demo-dc1-rack1-0
        - cassandra-demo-dc1-rack1-1
        - cassandra-demo-dc1-rack1-2
        startTime: 2018-07-12T14:06:22Z
        status: Done
    dc1-rack2:
      cassandraLastAction:
        Name: ScaleUp
        endTime: 2018-07-12T14:10:58Z
        startTime: 2018-07-12T14:10:28Z
        status: Done
      phase: Running
      podLastOperation:
        Name: cleanup
        endTime: 2018-07-12T14:08:16Z
        podsOK:
        - cassandra-demo-dc1-rack2-0
        - cassandra-demo-dc1-rack2-1
        - cassandra-demo-dc1-rack2-2
        startTime: 2018-07-12T14:08:09Z
        status: Done
  lastClusterAction: ScaleUp
  lastClusterActionStatus: Done        
...
  phase: Running
  seedlist:
  - cassandra-demo-dc1-rack1-0.cassandra-demo-dc1-rack1.cassandra-demo.svc.kaas-prod-priv-sph

The CassandraCluster prints out it's whole status.

seedlist: it is the Cassandra SEED List used in the Cluster.
Phase : it's the global state for the cassandra cluster which can have different values :
- Initialization, we just launched a new cluster, and waiting for its requested state
- Running, the cluster is running normally
- Pending, the number of Nodes requested has changed, waiting for reconciliation
lastClusterAction Is the Last Action at the Cluster level
lastClusterActionStatus Is the Last Action Status at the Cluster level
CassandraNodeStatus: represents a map of (hostId, Ip Node) couple for each Pod in the Cluster
- ${Cassandra node pod's name}
  - HostId: the cassandra node's hostId
  - IpNode: the cassandra node's ip
CassandraRackStatus represents a map of statuses for each of the Cassandra Racks in the Cluster
- ${Cassandra DC-Rack Name}
  - Cassandra Last Action: it's an action which is ongoing on the Cassandra cluster :
    - Name: name of the Action
      - UpdateConfigMap a new ConfigMap has been submitted to the cluster
      - UpdateDockerImage a new Docker Image has been submitted to the cluster
      - UpdateSeedList a new SeedList must be deployed on the cluster
      - UpdateResources CassKop must apply new resources values for it's statefulsets
      - RollingRestart CassKop performs a rollingrestart on the target statefulset
      - ScaleUp a scale Up has been requested
      - ScaleDown a scale Down has been requested.
      - UpdateStatefulset a change has been submitted to the statefulset, but CassKop doesn't know exactly which one.
    - Status: status of the Action
      - Configuring: Only used for UpdateSeedList, we need to synchronise all statefulset with this operation before starting it
      - ToDo: an action is scheduled
      - Ongoing: an action is ongoing, see Start Time
      - Continue: the action may be continuing (used for ScaleDown)
      - Done: the action is Done, see End Time
    - Start Time: time of start of the operation
    - End Time: time of end of the operation
  - Pod Last Operation: it's an operation done at Pod Level
    - Name: Name of the Operation
      - decommissioning: a nodetool decommissioning must be performed on a pod
      - cleanup: a nodetool cleanup must be performed on a pod
      - rebuild: a nodetool rebuild must be performed on a pod
      - upgradesstables: a nodetool upgradesstables must be performed on a pod
    - Status:
      - Manual: an operation is recommended to be scheduled by a human
      - ToDo: an operation is scheduled
      - Ongoing: an operation is ongoing, see start time
      - Done: an operation is done, see end time
    - Pods: list of Pods on which the operation is ongoing
    - PodsOK: list of Pods on which the operation is done
    - PodsKO: list of Pods on which the operation has not been completed correctly
    - Start Time: time of start for an operation
    - End Time: time of end for an operation

When Status=Done for each Rack, then there is no specific action ongoing on the cluster and the lastClusterActionStatus will turn also to Done.