kubernetes Ingress网络配置说明

默认后端服务镜像： registry.cn-qingdao.aliyuncs.com/kube8s/defaultbackend:1.0
nginx-Ingress-controller服务镜像：registry.cn-qingdao.aliyuncs.com/kube8s/nginx-ingress-controller:0.8.3
测试服务镜像：registry.cn-qingdao.aliyuncs.com/icommon/hello-world:latest

部署Ingress-controlle默认后端服务

1.配置文件

$ cat default-http-backend.yamlapiVersion: v1kind: ReplicationControllermetadata: ?name: default-http-backend ?namespace: kube-systemspec: ?replicas: 1 ?selector: ???k8s-app: default-http-backend ?template: ???metadata: ?????labels: ???????k8s-app: default-http-backend ???spec: ?????terminationGracePeriodSeconds: 60 ?????containers: ?????- name: default-http-backend ???????image: registry.cn-qingdao.aliyuncs.com/kube8s/defaultbackend:1.0 ????????livenessProbe: ?????????httpGet: ???????????path: /healthz ???????????port: 8080 ???????????scheme: HTTP ?????????initialDelaySeconds: 30 ?????????timeoutSeconds: 5 ???????ports: ???????- containerPort: 8080 ???????resources: ?????????limits: ???????????cpu: 10m ???????????memory: 20Mi ?????????requests: ???????????cpu: 10m ???????????memory: 20Mi---apiVersion: v1kind: Servicemetadata: ?name: default-http-backend ?labels: ???k8s-app: default-http-backend ?namespace: kube-systemspec: ?ports: ?- port: 80 ???targetPort: 8080 ?selector: ???k8s-app: default-http-backend

2.启动服务

kubectl create -f default-http-backend.yaml

3.验证

curl http://$pod_ip:8080/healthz

返回OK，说明部署成功
pod_ip，可以使用kubectl describe 获取

部署nginx-Ingress-controller服务

1.配置文件

$ cat ingress-controller.yamlapiVersion: v1kind: ReplicationControllermetadata: ?name: nginx-ingress-controller ?namespace: kube-system ?labels: ???k8s-app: nginx-ingress-lbspec: ?replicas: 1 ?selector: ???k8s-app: nginx-ingress-lb ?template: ???metadata: ?????labels: ???????k8s-app: nginx-ingress-lb ???????name: nginx-ingress-lb ???spec: ?????#跟apiserver通信采用的serviceaccount不是默认的default，需要一个token，serviceaccount文件见下面 ?????serviceAccount: admin-user ?????serviceAccountName: admin-user ?????hostNetwork: true ????#解决端口无法映射问题 ?????terminationGracePeriodSeconds: 60 ?????containers: ?????- image: registry.cn-qingdao.aliyuncs.com/kube8s/nginx-ingress-controller:0.8.3 ???????name: nginx-ingress-lb ???????readinessProbe: ?????????httpGet: ???????????path: /healthz ???????????port: 80 ???????????scheme: HTTP ???????livenessProbe: ?????????httpGet: ???????????path: /healthz ???????????port: 80 ???????????scheme: HTTP ?????????initialDelaySeconds: 10 ?????????timeoutSeconds: 1 ???????env: ?????????- name: POD_NAME ???????????valueFrom: ?????????????fieldRef: ???????????????fieldPath: metadata.name ?????????- name: POD_NAMESPACE ???????????valueFrom: ?????????????fieldRef: ???????????????fieldPath: metadata.namespace ?????????- name: KUBERNETES_MASTER ???????????value: https://192.168.6.110:6443 #kubeapiserver 地址 ???????ports: ???????- containerPort: 80 ?????????hostPort: 80 ???????- containerPort: 443 ?????????hostPort: 443 ???????args: ???????- /nginx-ingress-controller ???????- --default-backend-service=$(POD_NAMESPACE)/default-http-backend

serviceAccount文件

$ cat admin-user.yamlapiVersion: v1kind: ServiceAccountmetadata: ?name: admin-user ?namespace: kube-system---apiVersion: rbac.authorization.k8s.io/v1kind: ClusterRoleBindingmetadata: ?name: admin-userroleRef: ?apiGroup: rbac.authorization.k8s.io ?kind: ClusterRole ?name: cluster-adminsubjects:- kind: ServiceAccount ?name: admin-user ?namespace: kube-system

2.启动服务

kubectl create -f admin-user.yamlkubectl create -f ingress-controller.yaml

3.验证

curl http://$node_ip:8080/healthz

返回OK，说明部署成功

部署hello-world测试服务

1.配置文件

$cat hello-world.yamlapiVersion: extensions/v1beta1kind: Deploymentmetadata: ?name: hello-world spec: ?replicas: 3 ?template: ???metadata: ?????labels: ???????k8s-app: hello-world ????spec: ?????containers: ?????- name: hello-world ????????image: registry.cn-qingdao.aliyuncs.com/icommon/hello-world:latest ---apiVersion: v1kind: Servicemetadata: ?name: hello-world spec: ?type: NodePort ?ports: ?- port: 8080 ???targetPort: 8080 ???????nodePort: 31180 ?selector: ???k8s-app: hello-world

2.启动服务

kubectl create -f hello-world.yaml

3.验证服务

curl http://$node_ip:31180/hello-world/index.jsp

返回以下内容，说明成功部署

<html>
<body>
<h1>Hello World?</h1>
<h2>Hello World!</h2>
</body>
</html>

部署Ingress服务

1.配置文件

$ cat ingress.yamlapiVersion: extensions/v1beta1kind: Ingressmetadata: ?name: hello-ingressspec: ?rules: ????- http: ???????paths: ???????- path: /hello-world/index.jsp ?????????backend: ???????????serviceName: hello-world ???????????servicePort: 8080

2.启动服务

kubectl create -f ingress.yaml

3.验证

curl http://$node_ip/hello-world/index.jsp

返回以下内容，说明成功部署

<html>
<body>
<h1>Hello World?</h1>
<h2>Hello World!</h2>
</body>
</html>

kubernetes Ingress网络配置说明

原文地址：http://blog.51cto.com/2759492/2087931