Cruise control: Getting error message - Error processing POST request '/rebalance' due to: 'com.linkedin.kafka.cruisecontrol.exception.KafkaCruiseControlException: java.lang.IllegalArgumentException: Missing hard goals

[Gulnaz2021]

Hi,
With Strimzi operator version 20, I've applied the kafka-rebalance file to my namespace with kafka cluster. And upon describing the kafkarebalance using the command - kubectl describe kafkarebalance my-rebalance -n myproject, getting the below mentioned error:
Message: Error for request: my-cluster-cruise-control.kafka-cruise.svc:9090/kafkacruisecontrol/rebalance?json=true&dryrun=true&verbose=false&skip_hard_goal_check=false&goals=CpuCapacityGoal%2CNetworkInboundCapacityGoal%2CDiskCapacityGoal%2CRackAwareGoal%2CNetworkOutboundCapacityGoal. Server returned: Error processing POST request '/rebalance' due to: 'com.linkedin.kafka.cruisecontrol.exception.KafkaCruiseControlException: java.lang.IllegalArgumentException: Missing hard goals [NetworkInboundCapacityGoal, DiskCapacityGoal, RackAwareGoal, NetworkOutboundCapacityGoal, CpuCapacityGoal, ReplicaCapacityGoal] in the provided goals: [CpuCapacityGoal, NetworkInboundCapacityGoal, DiskCapacityGoal, RackAwareGoal, NetworkOutboundCapacityGoal]. Add skip_hard_goal_check=true parameter to ignore this sanity check.'.

Kafka-rebalance yaml file configuration:
metadata:
name: my-rebalance
labels:
strimzi.io/cluster: my-cluster
spec:
goals:
- CpuCapacityGoal
- NetworkInboundCapacityGoal
- DiskCapacityGoal
- RackAwareGoal
- NetworkOutboundCapacityGoal

And for kafka yaml file, mentioned the cruise control as below.
cruiseControl: {}

Can I please get some help in this regard.
Thanks.

[tomncooper]

You have described a set of custom goals in your KafkaRebalance resource but that list does not contain all the configured (default in this case) hard goals, hence the java.lang.IllegalArgumentException: Missing hard goals error.

As per the Strimzi Cruise Control documentation you must include all configured hard goal in your custom goals.

You can either add the missing hard goals to the goals list in your KafkaRebalance resource or reconfigure (and restart) the CC server with a different set of hard goals (although be aware that will effect all rebalances).

[Gulnaz2021]

Thankyou! That helps!