背景：kubernetes集群traefik ingress实现同一命名空间不同微服务模块的访问
1.安装traefik ingress
cat > traefik-ingress.yaml <<EOF

kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: traefik-ingress-controller
rules:

• apiGroups:
  • ""
    resources:
  • pods
  • services
  • endpoints
  • secrets
    verbs:
  • get
  • list
  • watch
• apiGroups:
  • extensions
    resources:
  • ingresses
    verbs:
  • get
  • list

  • watch

    kind: ClusterRoleBinding
    apiVersion: rbac.authorization.k8s.io/v1
    metadata:
    name: traefik-ingress-controller
    roleRef:
    apiGroup: rbac.authorization.k8s.io
    kind: ClusterRole
    name: traefik-ingress-controller
    subjects:

    • kind: ServiceAccount
      name: traefik-ingress-controller
      namespace: c7n-system

      apiVersion: v1
      kind: ServiceAccount
      metadata:
      name: traefik-ingress-controller
      namespace: c7n-system

      kind: Deployment
      apiVersion: apps/v1beta1
      metadata:
      name: traefik-ingress-controller
      namespace: c7n-system
      labels:
      k8s-app: traefik-ingress-lb
      spec:
      replicas: 1
      selector:
      matchLabels:
      k8s-app: traefik-ingress-lb
      template:
      metadata:
      labels:
      k8s-app: traefik-ingress-lb
      name: traefik-ingress-lb
      spec:
      serviceAccountName: traefik-ingress-controller
      terminationGracePeriodSeconds: 60
      containers:

  • image: traefik:v1.7.4
    imagePullPolicy: IfNotPresent
    name: traefik-ingress-lb
    args:
    • --api
    • --kubernetes

    • --logLevel=INFO

      kind: Service
      apiVersion: v1
      metadata:
      name: traefik-ingress-service
      namespace: c7n-system
      spec:
      selector:
      k8s-app: traefik-ingress-lb
      ports:

    • protocol: TCP
      

      该端口为 traefik ingress-controller的服务端口

      port: 80

      集群hosts文件中设置的 NODE_PORT_RANGE 作为 NodePort的可用范围

      从默认20000~40000之间选一个可用端口，让ingress-controller暴露给外部的访问

      nodePort: 23456
      name: web

    • protocol: TCP
      

      该端口为 traefik 的管理WEB界面

      port: 8080
      name: admin
      type: NodePort
      EOF

2.查看k8s集群配置微服务svc

3.配置raefik ingress后端f服务
cat > traefik-choerodon.yaml <<EOF

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: choerodon-xiongxj
namespace: c7n-system
spec:
rules:

• host: choerodon.maimailoan.cn
  http:
  paths:
  • path: /api-gateway
    backend:
    serviceName: api-gateway
    servicePort: 8080
  • path: /c7n-slaver
    backend:
    serviceName: c7n-slaver
    servicePort: 80
  • path: /chartmuseum-chartmuseum
    backend:
    serviceName: chartmuseum-chartmuseum
    servicePort: 8080
  • path: /choerodon-front
    backend:
    serviceName: choerodon-front
    servicePort: 80
  • path: /config-server
    backend:
    serviceName: config-server
    servicePort: 8010
  • path: /devops-service
    backend:
    serviceName: devops-service
    servicePort: 8060
  • path: /gitlab
    backend:
    serviceName: gitlab
    servicePort: 80
  • path: /harbor
    backend:
    serviceName: harbor-harbor-ui
    servicePort: 80
  • path: /minio
    backend:
    serviceName: minio-svc
    servicePort: 9000
  • path: /xwiki
    backend:
    serviceName: xwiki
    servicePort: 8080
    EOF
    4.查看ingress详情
    

5.访问

原文地址：https://blog.51cto.com/whitehat/2382365