标签：image http 变化 方便 das pat ports nta ase
参考文档：http://traefik.cn/
ingress:
使用nginx作为前端负载均衡，通过ingress controller不断的和kubernetes api交互，实时获取后端service，pod等的变化，然后动态更新nginx配置，并刷新使配置生效，达到服务发现的目的。
traefik:
traefik本身设计的就能够实时跟kubernetes api交互，感知后端service，pod等的变化，自动更新配置并重载。
traefik更快速方便，同时支持更多的特性，使反向代理，负载均衡更直接更高效
下载traefik需要用到的chart [root@k8s-master ~]# git clone https://github.com/helm/charts.git 修改traefik使用宿主机网络 [root@k8s-master ~]# vim charts/stable/traefik/templates/deployment.yaml hostNetwork: true 配置dashboard [root@k8s-master ~]# cd charts/stable/ [root@k8s-master stable]# vim traefik/traefik.yaml serviceType: NodePort replicas: 1 resources: limits: cpu: 500m memory: 512Mi dashboard: enabled: true domain: traefik.test.com service: nodePorts: http: 30080 https: 30443 rbac: enabled: true metrics: prometheus: enabled: true 部署 [root@k8s-master stable]# helm install ./traefik --name traefik --namespace kube-system -f traefik/traefik.yaml [root@k8s-master ~]# kubectl get pod -n kube-system -o wide |grep traefik traefik-74df464495-w288l 0/1 Running 0 7s 192.168.0.123 k8s-node01 <none> <none>
[root@k8s-node01 ~]# netstat -tnlp |grep traefik
tcp6 0 0 :::8080 :::* LISTEN 110720/traefik
tcp6 0 0 :::8880 :::* LISTEN 110720/traefik
tcp6 0 0 :::80 :::* LISTEN 110720/traefi
部署应用
[root@k8s-master demo]# cat deploy.yaml apiVersion: apps/v1 kind: Deployment metadata: name: myapp-backend-pod namespace: default spec: replicas: 3 selector: matchLabels: app: myapp release: canary template: metadata: labels: app: myapp release: canary spec: containers: - name: myapp image: ikubernetes/myapp:v2 ports: - name: http containerPort: 80 [root@k8s-master demo]# cat service.yaml apiVersion: v1 kind: Service metadata: name: myapp namespace: default spec: selector: app: myapp release: canary ports: - name: http targetPort: 80 port: 80 [root@k8s-master demo]# kubectl apply -f . deployment.apps/myapp-backend-pod created service/myapp created [root@k8s-master demo]# kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE kubernetes ClusterIP 10.1.0.1 <none> 443/TCP 46h myapp ClusterIP 10.1.125.169 <none> 80/TCP 43s [root@k8s-master demo]# curl 10.1.125.169 Hello MyApp | Version: v2 | <a href="hostname.html">Pod Name</a>
配置ingress规则使集群外部访问
[root@k8s-master demo]# cat ingress.yaml apiVersion: extensions/v1beta1 kind: Ingress metadata: name: hello-ingress annotations: kubernetes.io/ingress.class: traefik spec: rules: - host: hello.test.com http: paths: - path: / backend: serviceName: myapp servicePort: 80 [root@k8s-master demo]# kubectl apply -f ingress.yaml ingress.extensions/hello-ingress created
traefik的Dashboard
一个简单的Dashboard, 可以看当前的路由规则，和转发的结果统计。
标签：image http 变化 方便 das pat ports nta ase
原文地址：https://www.cnblogs.com/yuezhimi/p/11098473.html
