Officially support Kubernetes native sidecars

[komapa]

Community Note

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Is your feature request related to a problem? Please describe.

Yes, very similar to the corresponding vault-k8s ask here: hashicorp/vault-k8s#620

See: https://kubernetes.io/docs/concepts/workloads/pods/sidecar-containers/

Feature Description

Implement annotation globally and/or per Pod where we can tell consul-k8s to inject the consul-dataplane container in initContainers with the restartPolicy: Always. Thinking about it, this is the only thing that needs to be done to have the consul-dataplane run before the main containers and also to NOT block shutdown of Jobs.

Use Case(s)

Solve a whole slew of issues which we have to now manually work around with shutdown delays and startup checks in the main container.

Contributions