ingress部署

比眉伴天荒 2022-03-25 08:13 315阅读 0赞

### 1. ingress的部署方 ###

官方简介在[https://github.com/kubernetes/ingress-nginx/blob/master/docs/deploy/index.md][https_github.com_kubernetes_ingress-nginx_blob_master_docs_deploy_index.md]，

执行如下命令：

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/mandatory.yaml

执行如下代码检查部署情况

kubectl get pods --all-namespaces -l app.kubernetes.io/name=ingress-nginx --watch

安装完成后，执行如下命令检查ingress版本号

POD_NAMESPACE=ingress-nginx
    POD_NAME=$(kubectl get pods -n $POD_NAMESPACE -l app.kubernetes.io/name=ingress-nginx -o jsonpath='{.items[0].metadata.name}')
    kubectl exec -it $POD_NAME -n $POD_NAMESPACE -- /nginx-ingress-controller --version

之后在[https://github.com/kubernetes/ingress-nginx/releases][https_github.com_kubernetes_ingress-nginx_releases]下载对应版本的代码

### 2. 启动ingress pod： ###

进入ingress-nginx-nginx-0.22.0/deploy目录，执行kubectl create -f mandatory.yaml

### 3. 建立映射规则： ###

创建映射文件ingress-echoheaders.yaml，其中需要根据映射的服务修改name、serviceName、servicePort，服务可以通过kubectl get svc --all-namespaces查询

apiVersion: extensions/v1beta1
    kind: Ingress
    metadata:
      name: ingress-echoheaders
      annotations:
        # use the shared ingress-nginx
        kubernetes.io/ingress.class: "nginx"
    spec:
      rules:
      - host: echoheaders.test.com
        http:
          paths:
          - path: /
            backend:
              serviceName: echoheaders
              servicePort: 80

执行kubectl create -f  ingress-echoheaders.yaml

执行kubectl get ingresses.extensions即可检查到映射关系

### 4. 创建ingress服务： ###

进入ingress-nginx-nginx-0.21.0/deploy/provider/baremetal，修改service-nodeport.yaml文件，加入externalIPs，并设置为需要指定的虚拟ip，注意此IP应与node处于同一网段，并且没有被占用

apiVersion: v1
    kind: Service
    metadata:
      name: ingress-nginx
      namespace: ingress-nginx
      labels:
        app.kubernetes.io/name: ingress-nginx
        app.kubernetes.io/part-of: ingress-nginx
    spec:
      externalIPs:
      - 10.66.66.66
      type: NodePort
      ports:
        - name: http
          port: 80
          targetPort: 80
          protocol: TCP
        - name: https
          port: 443
          targetPort: 443
          protocol: TCP
      selector:
        app.kubernetes.io/name: ingress-nginx
        app.kubernetes.io/part-of: ingress-nginx

5. ingress搭建完成如下所示：

[root@node33 ~]# kubectl get svc -n ingress-nginx          
    NAME            TYPE       CLUSTER-IP      EXTERNAL-IP      PORT(S)                      AGE
    ingress-nginx   NodePort   10.233.10.206   10.66.66.66   80:32361/TCP,443:30510/TCP   81m
    [root@node33 ~]# kubectl get ingresses.extensions
    NAME                  HOSTS                   ADDRESS          PORTS   AGE
    ingress-echoheaders   echoheaders.test.com   10.66.66.66   80      3d3h

最后在同网段的任意一台服务器上，对/etc/hosts文件进行修改，增加

10.66.66.66                echoheaders.test.com

执行curl  echoheaders.test.com即可看到效果

[https_github.com_kubernetes_ingress-nginx_blob_master_docs_deploy_index.md]: https://github.com/kubernetes/ingress-nginx/blob/master/docs/deploy/index.md
[https_github.com_kubernetes_ingress-nginx_releases]: https://github.com/kubernetes/ingress-nginx/releases