What causes "ingressClass not found"?

controller missing typo class missing

Is the "ingressClass not found" error serious?

Yes. This is a high-severity error that usually blocks work until it is fixed, but the steps above resolve it.

KubernetesBEGINNERHIGHLast verified Dec 6, 2025· 12 views

Error when Ingress references missing ingressClass

Fixes ingressClass not found

kubernetes — error

$# ingressClass not found
ingressClass not found

Specified ingressClassName does not exist

1List classes

kubectl get ingressclass

2Check className

kubectl get ingress -o yaml

3Install controller

helm install nginx-ingress

4Update className

kubectl patch ingress

Create class

IngressClass is cluster-scoped. Multiple allowed. Controller self-registers.

What does "ingressClass not found" mean?: Specified ingressClassName does not exist
How do I fix "ingressClass not found"?: Error when Ingress references missing ingressClass
What causes "ingressClass not found"?: controller missing typo class missing
Is the "ingressClass not found" error serious?: Yes. This is a high-severity error that usually blocks work until it is fixed, but the steps above resolve it.