[root@mbs01 k8s]# kubectl apply -f ingress-tomcat6.yaml
error: error validating “ingress-tomcat6.yaml”: error validating data: [ValidationError(Ingress.spec.rules[0].http.paths[0]): unknown field “serviceName” in io.k8s.api.extensions.v1beta1.HTTPIngressPath, ValidationError(Ingress.spec.rules[0].http.paths[0]): unknown field “servicePort” in io.k8s.api.extensions.v1beta1.HTTPIngressPath, ValidationError(Ingress.spec.rules[0].http.paths[0]): missing required field “backend” in io.k8s.api.extensions.v1beta1.HTTPIngressPath]; if you choose to ignore these errors, turn validation off with --validate=false
[root@mbs01 k8s]# cat ingress-tomcat6.yaml
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: web
spec:
rules:

• host: tomcat6.mbs.com
  http:
  paths:
  - backend:
  serviceName: tomcat6
  servicePort: 80
  [root@mbs01 k8s]# cat ingress-tomcat6.yaml
  apiVersion: extensions/v1beta1
  kind: Ingress
  metadata:
  name: web
  spec:
  rules:
• host: tomcat6.mbs.com
  http:
  paths:
  - backend:
  serviceName: tomcat6
  servicePort: 80
  这个问题的出现在于配置中
  serviceName: tomcat6
  servicePort: 80
  前面删了一个空格导致验证失败了，如下图对比：
  修改前：
  
  修改后：