六. k8s--ingress学习笔记

迷南。 2023-08-17 16:33 64阅读 0赞

*  k8s七层代理实现方案
 *  部署安装ingress-nginx
    
     *  部署ingress-Controller
     *  部署ingress-service(nodeport方式)
     *  ingress实验

![1120683-20190906163111785-791132684.png][]

## k8s七层代理实现方案 ##

*  trafik
 *  envoy
 *  nginx

[ingress和service的区别与联系][ingress_service]

## 部署安装ingress-nginx ##

### 部署ingress-Controller ###

mkdir nginx-ingress
    cd nginx-ingress
    wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/nginx-0.25.1/deploy/static/mandatory.yaml
    kubectl apply -f mandatory.yaml
    kubectl get ns
    kubectl get pod -n ingress-nginx

### 部署ingress-service(nodeport方式) ###

wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/baremetal/service-nodeport.yaml

cat service-nodeport.yaml
    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:
      type: NodePort
      ports:
        - name: http
          port: 80
          targetPort: 80
          nodePort: 30080     #指定了nodeport, 好处便于记忆, 坏处可能会端口冲突
          protocol: TCP
        - name: https
          port: 443
          targetPort: 443
          nodePort: 30443     #指定了nodeport, 好处便于记忆, 坏处可能会端口冲突
          protocol: TCP
      selector:
        app.kubernetes.io/name: ingress-nginx
        app.kubernetes.io/part-of: ingress-nginx

kubectl apply -f service-nodeport.yaml
    kubectl get pod -n ingress-nginx
    kubectl get svc -n ingress-nginx

### ingress实验 ###

#### 一. myapp ####

创建deployment以及对应的service

apiVersion: v1
    kind: Service
    metadata:
        name: myapp
        namespace: default
    spec:
        selector:
            app: myapp
            release: canary
        ports:
        - name: http
          targetPort: 80
          port: 80
    ---
    apiVersion: apps/v1
    kind: Deployment
    metadata:
        name: myapp-deploy
        namespace: default
    spec:
        replicas: 2
        selector:
          matchLabels:
            app: myapp
            release: canary
        template:
          metadata:
            labels:
              app: myapp
              release: canary
          spec:
            containers:
            - name: myapp
              image: ikubernetes/myapp:v1
              ports:
              - name: http
                containerPort: 80

创建对应service的ingress规则

apiVersion: extensions/v1beta1
    kind: Ingress
    metadata:
        name: ingress-myapp
        namespace: default
        annotations:
            kubernetes.io/ingress.class: "nginx"
    spec:
        rules:
        - host: myapp.magedu.com
          http:
              paths:
              - path:
                backend:
                    serviceName: myapp
                    servicePort: 80

#### 二. tomcat ####

拉取镜像

docker pull tomcat:8.5.32-jre8-alpine

创建deployment以及对应的service

apiVersion: v1
    kind: Service
    metadata:
        name: tomcat
        namespace: default
    spec:
        selector:
            app: tomcat
            release: canary
        ports:
        - name: http
          targetPort: 8080
          port: 8080
        - name: ajp
          targetPort: 8009
          port: 8009
    ---
    apiVersion: apps/v1
    kind: Deployment
    metadata:
        name: tomcat-deploy
        namespace: default
    spec:
        replicas: 2
        selector:
          matchLabels:
            app: tomcat
            release: canary
        template:
          metadata:
            labels:
              app: tomcat
              release: canary
          spec:
            containers:
            - name: tomcat
              image: tomcat:8.5.32-jre8-alpine
              ports:
              - name: http
                containerPort: 8080
              - name: ajp
                containerPort: 8009

创建对应service的ingress规则

apiVersion: extensions/v1beta1
    kind: Ingress
    metadata:
        name: ingress-tomcat
        namespace: default
        annotations:
            kubernetes.io/ingress.class: "nginx"
    spec:
        rules:
        - host: tomcat.magedu.com
          http:
              paths:
              - path:
                backend:
                    serviceName: tomcat
                    servicePort: 8080

[https://zhuanlan.zhihu.com/p/62623207][https_zhuanlan.zhihu.com_p_62623207]

转载于:https://www.cnblogs.com/peitianwang/p/11475786.html

[1120683-20190906163111785-791132684.png]: /images/20230810/c432ad68a6df4e238eaf61109acdd146.png
[ingress_service]: https://www.jianshu.com/p/189fab1845c5
[https_zhuanlan.zhihu.com_p_62623207]: https://zhuanlan.zhihu.com/p/62623207