helm安装ingress

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helm安装ingress

​一、安装Helm

# wget https://get.helm.sh/helm-v3.3.4-linux-amd64.tar.gz
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# tart -zxvf helm-v3.3.4-linux-amd64.tar.gz 
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# mv linux-amd64/helm /usr/local/bin/helm
​
# helm version
version.BuildInfo{Version:"v3.3.4", GitCommit:"a61ce5633af99708171414353ed49547cf05013d", GitTreeState:"clean", GoVersion:"go1.14.9"}

　　 

二、下载ingress

# mkdir ingress && cd ingress
# 新建仓库
# helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
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# helm pull ingress ingress-nginx/ingress-nginx
# tar -xf ingress-nginx-3.7.1.tgz && cd ingress-nginx

　　

三、安装ingress

1. 修改values.yaml

 

# 修改controller镜像地址
repository: registry.cn-beijing.aliyuncs.com/dotbalo/controller
​
# dnsPolicy
dnsPolicy: ClusterFirstWithHostNet
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# 使用hostNetwork,即使用宿主机上的端口80 443
hostNetwork: true
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# 使用DaemonSet,将ingress部署在指定节点上
kind: DaemonSet
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# 节点选择，将需要部署的节点打上ingress=true的label
  nodeSelector:
    kubernetes.io/os: linux
    ingress: "true"
    
# 修改type,改为ClusterIP。如果在云环境，有loadbanace可以使用loadbanace
type: ClusterIP
​
# 修改kube-webhook-certgen镜像地址
registry.cn-beijing.aliyuncs.com/dotbalo/kube-webhook-certgen

　　

2. 安装ingress

# 选择节点打label
# kubectl label node node01 ingress=true
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# 创建一个ingress的namespace
# kubectl create ns ingress-nginx
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# 创建ingress
# helm install ingress-nginx -n ingress-nginx
​
# kubectl get pods -n ingress-nginx -owide
NAME                             READY   STATUS    RESTARTS   AGE   IP               NODE     NOMINATED NODE   READINESS GATES
ingress-nginx-controller-mrb2t   1/1     Running   0          15h   192.168.10.243   node01   <none>           <none>
 

　　

四、使用ingress

1. Ingress配置文件

   ingress-example.yaml
   
   apiVersion: networking.k8s.io/v1beta1
   kind: Ingress
   metadata:
     name: example-ingress
     annotations:
       kubernetes.io/ingressClass: "nginx"
   spec:
     rules:
     - host: foo.bar.com
       http:
         paths:
         - path: /
           backend:
             serviceName: nginx-svc
             servicePort: 80
   

   　　

   kubernetes.io/ingressClass: "nginx"：使用ingressClass: "nginx"，告诉ingress实现的配置

   rules： 一个rules可以有多个host

   host : 访问ingress的域名

   path : 类似于nginx的location配置，同一个host可以配置多个path

   backend：描述Service和ServicePort的组合。对ingress匹配主机和路径的HTTP与HTTPS请求将被转发到后端Pod

    

2. 创建一个nginx的Deployment

   apiVersion: v1
   kind: Service
   metadata:
     name: nginx-svc
     labels:
       app: nginx-svc
   spec:
     selector:
       app: nginx
     ports:
     - name: http
       protocol: TCP
       port: 80
       targetPort: 80
   ---
   apiVersion: apps/v1
   kind: Deployment
   metadata:
     annotations:
       deployment.kubernetes.io/revision: "1"
     labels:
       app: nginx
     name: nginx
     namespace: default
   spec:
     progressDeadlineSeconds: 600
     replicas: 2 #副本数
     revisionHistoryLimit: 10 # 历史记录保留的个数
     selector:
       matchLabels:
         app: nginx
     strategy:
       rollingUpdate:
         maxSurge: 25%
         maxUnavailable: 25%
       type: RollingUpdate
     template:
       metadata:
         labels:
           app: nginx
       spec:
         containers:
         - image: nginx:1.15.2
           imagePullPolicy: IfNotPresent
           name: nginx
           terminationMessagePath: /dev/termination-log
           terminationMessagePolicy: File
         restartPolicy: Always
         terminationGracePeriodSeconds: 30
   ​

    

3. 创建

   # kubectl create -f ingress-example.yaml 
   Warning: networking.k8s.io/v1beta1 Ingress is deprecated in v1.19+, unavailable in v1.22+; use networking.k8s.io/v1 Ingress
   ingress.networking.k8s.io/example-ingress created
   

   　　

   查看ingress

   # kubectl get ingress
   Warning: extensions/v1beta1 Ingress is deprecated in v1.14+, unavailable in v1.22+; use networking.k8s.io/v1 Ingress
   NAME              CLASS    HOSTS         ADDRESS         PORTS   AGE
   example-ingress   <none>   foo.bar.com   10.101.32.165   80      107s
   

   　　 

4. 修改本机hosts文件，访问far.bar.com