Installation reported during nginx setup failed calling webhook "validate.nginx.ingress.kubernetes.io":

Products

• DX Application Performance Management
• DX Operational Intelligence

Issue/Introduction

Installing version 21.3.using kubernetes V1.19.

for nginx I used the procedure 

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.40.2/deploy/static/provider/baremetal/deploy.yaml

I have the following error:

[create] [ FAILED ] Ingress apmservices-gateway. Failure executing: POST at:
 https://55.15.1.190:6443/apis/extensions/v1beta1/namespaces/dxi/ingresses. 
 Message: Internal error occurred: failed calling webhook "validate.nginx.ingress.kubernetes.io": 
 Post "https://ingress-nginx-controller-admission.ingress-nginx.svc:443/networking/v1beta1/ingresses?timeout=10s": 
 Service Unavailable. Received status: Status(apiVersion=v1, code=500, details=StatusDetails(causes=[StatusCause(field=null,
 message=failed calling webhook "validate.nginx.ingress.kubernetes.io": 
 Post "https://ingress-nginx-controller-admission.ingress-nginx.svc:443/networking/v1beta1/ingresses?timeout=10s":
 Service Unavailable, reason=null, additionalProperties={})], group=null, kind=null, name=null, retryAfterSeconds=null, uid=null, additionalProperties={}),
 kind=Status, message=Internal error occurred: failed calling webhook "validate.nginx.ingress.kubernetes.io": 
 Post "https://ingress-nginx-controller-admission.ingress-nginx.svc:443/networking/v1beta1/ingresses?timeout=10s":
 Service Unavailable, metadata=ListMeta(_continue=null, resourceVersion=null, selfLink=null, additionalProperties={}), 
 reason=InternalError, status=Failure, additionalProperties={}).
 

Environment

Release : 21.3

Component :

Resolution

The solution is to run 
 
kubectl delete -A ValidatingWebhookConfiguration ingress-nginx-admission
 
based on 
 
https://stackoverflow.com/questions/61616203/nginx-ingress-controller-failed-calling-webhook