duplicate metrics in destination controller

[siggy]

What is the issue?

The destination controller logs:

failed to register Prometheus gauge Desc{fqName: \"job_cache_size\", help: \"Number of items in the client-go job cache\", constLabels: {cluster=\"local\"}, variableLabels: {}}: duplicate metrics collector registration attempted

How can it be reproduced?

with edge-24.6.1:

linkerd install --crds | kubectl apply -f -
linkerd install | kubectl apply -f -
kubectl -n linkerd logs deploy/linkerd-destination -c destination

Logs, error output, etc

$ kubectl -n linkerd logs deploy/linkerd-destination -c destination
time="2024-06-12T15:28:18Z" level=info msg="running version edge-24.6.1"
time="2024-06-12T15:28:18Z" level=info msg="starting admin server on :9996"
time="2024-06-12T15:28:18Z" level=info msg="Using default opaque ports: map[25:{} 587:{} 3306:{} 4444:{} 5432:{} 6379:{} 9300:{} 11211:{}]"
time="2024-06-12T15:28:18Z" level=warning msg="failed to register Prometheus gauge Desc{fqName: \"job_cache_size\", help: \"Number of items in the client-go job cache\", constLabels: {cluster=\"local\"}, variableLabels: {}}: duplicate metrics collector registration attempted"
time="2024-06-12T15:28:18Z" level=info msg="waiting for caches to sync"

output of linkerd check -o short

$ linkerd check -o short
Status check results are √

Environment

$ kind version
kind v0.22.0 go1.20.13 linux/amd64

Possible solution

No response

Additional context

No response

Would you like to work on fixing this bug?

maybe