Configuring multi-zone support

You configure multi-zone support by setting the nodeAffinity parameter.

About this task

In a multi-zone environment, you might want to ensure that all the pods of an Operational Decision Manager service are deployed on nodes in a specific zone. This way, you can organize and optimize access to the underlying resources, like storage and database, by region. For more information about the benefits of Kubernetes zones, see Running in multiple zones External link opens a new window or tab .

Procedure

To deploy all Operational Decision Manager pods into a specific zone of the cluster, add the following customization to your Helm chart.

For example, to deploy on the eu-west-3b zone:


customization:
  nodeAffinity:
  - key: topology.kubernetes.io/zone
    operator: In
    values:
      - eu-west-3b

All the pods are scheduled to run on nodes located in the eu-west-3b zone.

You can also configure node affinity at the service level.

For example, to deploy all the pods into the eu-west-3b zone, except the Decision Center pods that you want to deploy to the eu-west-3c zone, use the following configuration:


decisionCenter:
  nodeAffinity:
  - key: topology.kubernetes.io/zone
    operator: In
    values:
      - eu-west-3c 
customization:
  nodeAffinity:
  - key: topology.kubernetes.io/zone
    operator: In
    values:
      - eu-west-3b