operator-framework/operator-sdk

`WATCH_NAMESPACE` environment variable doesn't work for the Helm Operator

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gschlueter-jaconi commented

Bug Report

What did you do?

Cloned the operator-sdk repo and tried out the example in testdata/helm/memcached-operator in a local cluster with the WATCH_NAMESPACE environment variable set to default:

  1. Check out the repo and go to the example dir:
git clone git@github.com:operator-framework/operator-sdk.git
cd operator-sdk/testdata/helm/memcached-operator
  1. Create the cluster:
kind create cluster --image kindest/node:v1.28.0
  1. Start the operator with the env variable set:
WATCH_NAMESPACE=default make install run
  1. Create a memcached instance (in the default namespace):
kubectl apply -k config/samples
  1. Observe the operator log:
/usr/local/bin/kustomize build config/crd | kubectl apply -f -
customresourcedefinition.apiextensions.k8s.io/memcacheds.cache.example.com created
/usr/local/bin/helm-operator run
{"level":"info","ts":"2024-07-04T12:42:14+02:00","logger":"cmd","msg":"Version","Go Version":"go1.21.11","GOOS":"darwin","GOARCH":"amd64","helm-operator":"v1.35.0","commit":"e95abdbd5ccb7ca0fd586e0c6f578e491b0a025b"}
{"level":"info","ts":"2024-07-04T12:42:14+02:00","logger":"cmd","msg":"Watching namespaces","namespaces":["default"]}
{"level":"info","ts":"2024-07-04T12:42:14+02:00","logger":"helm.controller","msg":"Watching resource","apiVersion":"cache.example.com/v1alpha1","kind":"Memcached","reconcilePeriod":"1m0s"}
{"level":"info","ts":"2024-07-04T12:42:14+02:00","msg":"starting server","kind":"health probe","addr":"[::]:8081"}
{"level":"info","ts":"2024-07-04T12:42:14+02:00","logger":"controller-runtime.metrics","msg":"Starting metrics server"}
{"level":"info","ts":"2024-07-04T12:42:14+02:00","logger":"controller-runtime.metrics","msg":"Serving metrics server","bindAddress":":8080","secure":false}
{"level":"info","ts":"2024-07-04T12:42:14+02:00","msg":"Starting EventSource","controller":"memcached-controller","source":"kind source: *unstructured.Unstructured"}
{"level":"info","ts":"2024-07-04T12:42:14+02:00","msg":"Starting Controller","controller":"memcached-controller"}
{"level":"info","ts":"2024-07-04T12:42:14+02:00","msg":"Starting workers","controller":"memcached-controller","worker count":16}

What did you expect to see?

A Memcached StatefulSet should be created. It works as expected when I omit the WATCH_NAMESPACE variable.

What did you see instead? Under which circumstances?

Nothing happens and the log shows no entry after the startup.

Environment

Operator type:

/language helm

Kubernetes cluster type:

vanilla (Kind)

$ operator-sdk version

operator-sdk version: "v1.35.0", commit: "e95abdbd5ccb7ca0fd586e0c6f578e491b0a025b", kubernetes version: "v1.28.0", go version: "go1.21.11", GOOS: "darwin", GOARCH: "amd64"

$ go version (if language is Go)

$ kubectl version

Client Version: v1.29.2
Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
Server Version: v1.28.0

Possible Solution

Additional context