K
Q

not able to create the rule for the ingress controller

1/27/2022

What am I going wrong in the below query?

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: nginx-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - http:
      paths:
      - path: /nginx
        backend:
          serviceName: nginx
          servicePort: 80

The error I am getting: 

error validating "ingress.yaml": error validating data: [ValidationError(Ingress.spec.rules[0].http.paths[0].backend): unknown field "serviceName" in io.k8s.api.networking.v1.IngressBackend, ValidationError(Ingress.spec.rules[0].http.paths[0].backend): unknown field "servicePort" in io.k8s.api.networking.v1.IngressBackend]; if you choose to ignore these errors, turn validation off with
--validate=false
-- Subhajit Das
kubernetes
kubernetes-ingress

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4 Answers

1/27/2022

Ingress spec has changed since updated to v1. Try:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: nginx-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - http:
      paths:
      - path: /nginx
        pathType: ImplementationSpecific
        backend:
          service:
            name: nginx
            port:
              number: 80
-- gohm'c
Source: StackOverflow
1/27/2022

ServiceName and ServicePort no keywords are available like that in v1 .

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: nginx-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - http:
      paths:
      - path: /nginx
        backend:
          service:
            name: nginx
            port:
              number: 8080
-- Ravindra Bagale
Source: StackOverflow
1/27/2022

service name and service port syntax is incorrect. Follow the below sample

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: minimal-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  ingressClassName: nginx-example
  rules:
  - http:
      paths:
      - path: /testpath
        pathType: Prefix
        backend:
          service:
            name: test
            port:
              number: 80
-- P Ekambaram
Source: StackOverflow
2/11/2022

According to this documentation you need to change ServiceName and ServicePort.

Each HTTP rule contains (...) a list of paths (for example, /testpath), each of which has an associated backend defined with a service.name and a service.port.name or service.port.number. Both the host and path must match the content of an incoming request before the load balancer directs traffic to the referenced Service.

Here is your yaml file with corrections:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: nginx-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - http:
      paths:
      - path: /nginx
        backend:
          service:
            name: nginx
            port:
              number: 8080
-- kkopczak
Source: StackOverflow