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Upgrade KUDO Cassandra

This guide explains how to upgrade a running KUDO Cassandra instance to a newer version of KUDO Cassandra.

Pre-conditions

  • KUDO Cassandra instance running
  • KUDO CLI installed

Steps

Preparation

1. Set the shell variables

The examples below assume that the instance and namespace names are stored in the following shell variables. With this assumptions met, you should be able to copy-paste the commands easily.

instance_name=cassandra
namespace_name=default
destination_version=1.0.0

2. Verify that the variables are set correctly

kubectl get instance $instance_name -n $namespace_name
echo About to upgrade to $destination_version

Example output:

NAME        AGE
cassandra   16h
About to upgrade to 1.0.0

3. Verify the state of the KUDO Cassandra instance

kubectl kudo plan status --instance=$instance_name -n $namespace_name

In the output note if:

  • the current Operator-Version matches your expectation, and
  • deploy plan is COMPLETE

Example output:

Plan(s) for "cassandra" in namespace "default":
.
└── cassandra (Operator-Version: "cassandra-1.0.0" Active-Plan: "deploy")
    └── Plan deploy (serial strategy) [COMPLETE]
        └── Phase nodes (parallel strategy) [COMPLETE]
            └── Step node [COMPLETE]

Upgrade

kubectl kudo upgrade cassandra -n $namespace_name --instance=$instance_name --operator-version=$destination_version

Example output:

operatorversion.kudo.dev/v1beta1/cassandra-1.0.0 created
instance.kudo.dev/v1beta1/cassandra updated

Verification

Check the plan status:

kubectl kudo plan status --instance=$instance_name -n $namespace_name

Expected output should show:

  • deploy plan either IN_PROGRESS or COMPLETE, and
  • the Operator-Version to match the destination version.
Plan(s) for "cassandra" in namespace "default":
.
└── cassandra (Operator-Version: "cassandra-1.0.0" Active-Plan: "deploy")
    └── Plan deploy (serial strategy) [IN_PROGRESS]
        └── Phase nodes (parallel strategy) [IN_PROGRESS]
            └── Step node [IN_PROGRESS]

Once the pods are ready (passing readiness and liveness checks), the plan should change to COMPLETE.