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Chapter 31. Configuring node agent load affinity

You can schedule the node agent pods on specific nodes by using the spec.podConfig.nodeSelector object of the DataProtectionApplication (DPA) custom resource (CR).

See the following example in which you can schedule the node agent pods on nodes with the label label.io/role: cpu-1 and other-label.io/other-role: cpu-2. 

...
spec:
  configuration:
    nodeAgent:
      enable: true
      uploaderType: kopia
      podConfig:
        nodeSelector:
          label.io/role: cpu-1
          other-label.io/other-role: cpu-2
        ...
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You can add more restrictions on the node agent pods scheduling by using the nodeagent.loadAffinity object in the DPA spec.

Prerequisites

  • You must be logged in as a user with cluster-admin privileges.
  • You have installed the OADP Operator.
  • You have configured the DPA CR.

Procedure

  • Configure the DPA spec nodegent.loadAffinity object as shown in the following example.

    In the example, you ensure that the node agent pods are scheduled only on nodes with the label label.io/role: cpu-1 and the label label.io/hostname matching with either node1 or node2. 

    ...
spec:
  configuration:
    nodeAgent:
      enable: true
      loadAffinity:
        - nodeSelector:
            matchLabels:
              label.io/role: cpu-1
            matchExpressions:
              - key: label.io/hostname
                operator: In
                values:
                  - node1
                  - node2
                  ...
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    where:

    loadAffinity
    Specifies the loadAffinity object by adding the matchLabels and matchExpressions objects.
    matchExpressions
    Specifies the matchExpressions object to add restrictions on the node agent pods scheduling.
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