Tamir Sagi created FLINK-31047:
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Summary: Support Topology spread constrains when HA is enabled.
Key: FLINK-31047
URL: https://issues.apache.org/jira/browse/FLINK-31047
Project: Flink
Issue Type: Improvement
Components: Kubernetes Operator
Affects Versions: kubernetes-operator-1.4.0
Reporter: Tamir Sagi
In case HA is enabled, it should be possible to define topology spread
constrains to make sure the replicas are deployed on different nodes/zones
Add the following to flink-operator.yaml template under containers clause
[https://github.com/apache/flink-kubernetes-operator/blob/main/helm/flink-kubernetes-operator/templates/flink-operator.yaml#L64]
topologySpreadConstraints:
- maxSkew: 1
topologyKey: topology.kubernetes.io/zone
whenUnsatisfiable: DoNotSchedule
we can also add label selector to it.
Reference:
[https://kubernetes.io/docs/concepts/scheduling-eviction/topology-spread-constraints/]
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