ingress-nginx 部署使用

来源：cnblogs　　作者：不用去猜。　　时间：2022/1/2 18:58:58　　对本文有异议

安装部署 nginx-ingress-controller

输入下面网址：选择版本

https://github.com/kubernetes/ingress-nginx/blob/nginx-0.30.0/deploy/static/mandatory.yaml

vim mandatory.yaml  #新建一个yaml文件直接复制粘贴  ps: vim 编辑器 需要 set paste  防止格式错误
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官网提示(0.30版本）：!!! tip If you are using a Kubernetes version previous to 1.14, you need to change kubernetes.io/os to beta.kubernetes.io/os at line 217 of mandatory.yaml, see Labels details. #如果你的k8s集群版本低于1.14，需要

把第217 行的 kubernetes.io/os 替换成 beta.kubernetes.io/os

kubectl   version    查看集群版本
Client Version: version.Info{Major:"1", Minor:"13", GitVersion:"v1.13.3", GitCommit:"721bfa751924da8d1680787490c54b9179b1fed0", GitTreeState:"clean", BuildDate:"2019-02-01T20:08:12Z", GoVersion:"go1.11.5", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"13", GitVersion:"v1.13.3", GitCommit:"721bfa751924da8d1680787490c54b9179b1fed0", GitTreeState:"clean", BuildDate:"2019-02-01T20:00:57Z", GoVersion:"go1.11.5", Compiler:"gc", Platform:"linux/amd64"}
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214       terminationGracePeriodSeconds: 300
215       serviceAccountName: nginx-ingress-serviceaccount
216       nodeSelector:
217         beta.kubernetes.io/os: linux
218       containers:
219         - name: nginx-ingress-controller
:set nu

修改完创建资源

[root@localhost ~/test/ingress]# kubectl apply -f mandatory.yaml 
namespace/ingress-nginx created
configmap/nginx-configuration created
configmap/tcp-services created
configmap/udp-services created
serviceaccount/nginx-ingress-serviceaccount created
clusterrole.rbac.authorization.k8s.io/nginx-ingress-clusterrole created
role.rbac.authorization.k8s.io/nginx-ingress-role created
rolebinding.rbac.authorization.k8s.io/nginx-ingress-role-nisa-binding created
clusterrolebinding.rbac.authorization.k8s.io/nginx-ingress-clusterrole-nisa-binding created
deployment.apps/nginx-ingress-controller created
limitrange/ingress-nginx created
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查看控制器Pod  已经正常运行
[root@localhost ~/test/ingress]# kubectl get pods -n ingress-nginx
NAME                                       READY   STATUS    RESTARTS   AGE
nginx-ingress-controller-97547988b-jh9q4   1/1     Running   0          3m32s
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创建个service 集群外访问

[root@localhost ~/test/ingress]# vim service-nodeport.yaml 
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apiVersion: v1
kind: Service
metadata:
  name: ingress-nginx
  namespace: ingress-nginx
spec:
  type: NodePort
  ports:
  - name: http
    port: 80
    targetPort: 80
    protocol: TCP
    nodePort: 30080
  - name: https
    port: 443
    targetPort: 443
    protocol: TCP
    nodePort: 30443
  selector:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx
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kubectl apply  -f  service-nodeport.yaml    
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创建一组应用pod和对应的service

[root@localhost ~/test/ingress/tomcat]# vim deploy-tomcat.yaml 
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apiVersion: v1
kind: Service
metadata:
  name: tomcat
  namespace: default
spec:
  selector:
    app: tomcat
    release: canary
  ports:
  - name: http
    port: 80
    targetPort: 8080
 # - name: ajp
  #  port: 8009
   # targetPort: 8009
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---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: tomcat-deploy
spec:
  replicas: 3
  selector:
    matchLabels:
      app: tomcat
release: canary
  template:
    metadata:
      labels:
        app: tomcat
        release: canary
    spec:
      containers:
      - name: tomcat
        image: tomcat:7-alpine
        ports:
        - name: httpd
          containerPort: 8080
    #    - name: ajp
     #     containerPort: 8009 
                                 
kubectl apply -f deploy-tomcat.yaml

配置 ingress 规则

[root@localhost ~/test/ingress/tomcat]# vim tomcat.yaml 
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apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-tomcat
  namespace: default
  annotations:
    kubernets.io/ingress.class: "nginx"
spec:
  rules:
  - host: tomcat.luoluo.com
    http:
      paths:
      - path:
        backend:
          serviceName: tomcat
          servicePort: 8080
          
          
kubectl apply -f tomcat.yaml 
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浏览器输入 tomcat.luoluo.com:30080 验证 #测试需要修改宿主机 C:\Windows\System32\drivers\etc 下 HOSTS文件映射

对tomcat服务添加httpds服务

创建私有证书及secret

openssl genrsa -out tls.key 2048
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[root@localhost ~/test/ingress/tomcat]# openssl req -new -x509 -key tls.key -out tls.crt -subj /C=CN/ST=Beijing/L=Beijing/O=DevOps/CN=tomcat.luoluo.com  #注意域名要和服务的域名一致 
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kubectl create secret tls tomcat-ingress-secret --cert=tls.crt --key=tls.key #创建secret
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将证书应用至tomcat服务中

[root@localhost ~/test/ingress/tomcat]# vim ingress-tomcat-tls.yaml 
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apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-tomcat-tls
  namespace: default
  annotations:
    kubernets.io/ingress.class: "nginx"
spec:
  tls:
  - hosts:
    - tomcat.luoluo.com        #与secret证书的域名需要保持一致
    secretName: tomcat-ingress-secret   #secret证书的名称
  rules:
  - host: tomcat.luoluo.com
    https:
      paths:
      - path:
        backend:
          serviceName: tomcat
          servicePort: 8080
~                                                                                                                                     
~                                                                                              
kubectl apply -f ingress-tomcat-tls.yaml    
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