How to fix controller not ready in Kubernetes

KubernetesINTERMEDIATECRITICALUpdated Dec 6, 2025· 110 views

Error when Ingress controller pod not running

Quick fix

Fixes controller not ready

  1. Check pods
  2. Check logs
  3. Verify RBAC
  4. Check resources
  5. Restart
kubernetes — error
# controller not ready
controller not ready

What this error means

Ingress controller down or unhealthy

Typical symptoms

  • no external IP
  • no status
  • pod not running
  • CrashLoopBackOff
  • timeout

Common causes

  1. not deployed
  2. crashing
  3. resources full
  4. RBAC missing
  5. CRD missing
  6. ServiceAccount wrong
  7. network policy

How to fix "controller not ready"

1Check pods

kubectl get pods -n ingress-nginx

2Check logs

kubectl logs -n ingress-nginx

3Verify RBAC

kubectl get clusterrolebinding

4Check resources

kubectl top nodes

5Restart

kubectl delete pod

6Reinstall

helm uninstall then install

Advanced notes

Controller must be running and healthy. Check logs first. Multiple replicas recommended.

Frequently asked questions

What does "controller not ready" mean?
Ingress controller down or unhealthy
How do I fix "controller not ready"?
Error when Ingress controller pod not running
What causes "controller not ready"?
not deployed crashing resources full
Is the "controller not ready" error serious?
Yes. This is a critical-severity error that usually blocks work until it is fixed, but the steps above resolve it.

Official resources & further reading