Find all pods with linkerd sidecars injected in them

[drewwells]

Bug Report

What is the issue?

Linkerd does not use labels for sidecar injection, so it's not possible to sort for pods that have an injected sidecar.

How can it be reproduced?

kubectl get po -A --annotation linkerd.io/inject=enabled This command does not exist, only labels are filterable. kubernetes/kubernetes#18801 (comment)

Possible solution

Migrate to labels

Additional context

#5022 has discussion on other reasons that annotations should not be used for sidecar decisions

[grampelberg]

Here's how you'd do that:

kubectl get deploy \
    -o custom-columns=NAME:.metadata.name,"ANNOTATIONS":".spec.template.metadata.annotations.linkerd\.io/inject"  \
    --no-headers | \
grep enabled

Note: labels would be great, this is just an immediate solution.