CODEWITHSUNDEEP
kubernetes
Jared
Jared

Reputation: 880

injecting controller's information into containers in k8s

downwardAPI could be used to inject pod's information into containers.

That could be done as below,

  volumes:
    - name: stinfo
          downwardAPI:
            items:
              - path: "annotations"
                fieldRef:
                  fieldPath: metadata.annotations
              - path: "labels"
                fieldRef:
                  fieldPath: metadata.labels

Now I want to inject controllers' information into containers, how could I do that?

For example, I want to know how many replicas there is for deployment/statefulset.

Any advice?

Thx.

Upvotes: 0

Views: 29

Answers (1)

Radek 'Goblin' Pieczonka
Radek 'Goblin' Pieczonka

Reputation: 22884

The information you look for is dynamic so to get that you should use service account bound to your pod (for RBAC make sure it is attached and can read what you need) and make a direct API call to get current value.

Upvotes: 1

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