k8s1.20.15 部署ingress-nginx 与测试

k8s1.20.15 部署ingress-nginx 与测试

k8s1.20.15 部署ingress-nginx 与测试

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标签（空格分隔）： kubernetes系列

一: ingress-nginx的介绍

1. ingress 介绍 Service是基于四层TCP和UDP协议转发的，而Ingress可以基于七层的HTTP和HTTPS协议转发，可以通过域名和路径 来访问服务 Ingress-Nginx github 地址：https://github.com/kubernetes/ingress-nginx Ingress-Nginx 官方网站：https://kubernetes.github.io/ingress-nginx/ 2. k8s 对外暴露方式 K8s集群对外暴露服务的方式目前只有三种： Loadblancer；Nodeport；ingress 前两种熟悉起来比较快，而且使用起来也比较方便，在此就不进行介绍了。 3. ingress由两部分组成： ingress controller：将新加入的Ingress转化成Nginx的配置文件并使之生效 ingress服务：将Nginx的配置抽象成一个Ingress对象，每添加一个新的服务只需写一个新的Ingress的yaml文件即可 其中ingress controller目前主要有两种：基于nginx服务的ingress controller和基于traefik的ingress controller。 而其中traefik的ingress controller，目前支持ingress-nginx的安装

wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.47.0/deploy/static/provider/baremetal/deploy.yaml #修改镜像 vi deploy.yaml #将image的值改为如下值： registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/ingress-nginx-controller:v0.46.0 # 检查安装的结果 kubectl get pod,svc -n ingress-nginx # 最后别忘记把svc暴露的端口要放行

三: ingress-nginx的测试

3.1 测试环境

应用如下yaml，准备好测试环境 vim ingress-test.yaml apiVersion: apps/v1 kind: Deployment metadata: name: hello-server spec: replicas: 2 selector: matchLabels: app: hello-server template: metadata: labels: app: hello-server spec: containers: - name: hello-server image: registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/hello-server ports: - containerPort: 9000 --- apiVersion: apps/v1 kind: Deployment metadata: labels: app: nginx-demo name: nginx-demo spec: replicas: 2 selector: matchLabels: app: nginx-demo template: metadata: labels: app: nginx-demo spec: containers: - image: nginx name: nginx --- apiVersion: v1 kind: Service metadata: labels: app: nginx-demo name: nginx-demo spec: selector: app: nginx-demo ports: - port: 8000 protocol: TCP targetPort: 80 --- apiVersion: v1 kind: Service metadata: labels: app: hello-server name: hello-server spec: selector: app: hello-server ports: - port: 8000 protocol: TCP targetPort: 9000

kubecl apply -f ingress-test.yaml kubectl get pod,svc

3.2 域名访问

apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: ingress-host-bar spec: ingressClassName: nginx rules: - host: "hello.flyfish.com" http: paths: - pathType: Prefix path: "/" backend: service: name: hello-server port: number: 8000 - host: "demo.flyfish.com" http: paths: - pathType: Prefix path: "/" # 把请求会转给下面的服务，下面的服务一定要能处理这个路径，不能处理就是404 backend: service: name: nginx-demo ## java，比如使用路径重写，去掉前缀nginx port: number: 8000

kubectl apply -f ingress-web.yaml kubectl get ing

3.3 路径从写

vim ingress-rewrite.yaml ------ apiVersion: networking.k8s.io/v1 kind: Ingress metadata: annotations: nginx.ingress.kubernetes.io/rewrite-target: /$2 name: ingress-host-bar spec: ingressClassName: nginx rules: - host: "hello.flyfish.com" http: paths: - pathType: Prefix path: "/" backend: service: name: hello-server port: number: 8000 - host: "demo.flyfish.com" http: paths: - pathType: Prefix path: "/nginx(/|$)(.*)" # 把请求会转给下面的服务，下面的服务一定要能处理这个路径，不能处理就是404 backend: service: name: nginx-demo ## java，比如使用路径重写，去掉前缀nginx port: number: 8000 ----- kubectl apply -f ingress-rewrite.yaml curl 流量限制

vim ingress-nginx.yaml ----- apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: ingress-limit-rate annotations: nginx.ingress.kubernetes.io/limit-rps: "1" spec: ingressClassName: nginx rules: - host: "limit.flyfish.com" http: paths: - pathType: Exact path: "/" backend: service: name: nginx-demo port: number: 8000 kubectl apply -f ingress-limit.yaml

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