在 kubernetes 1.8 上部署 ingress

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准备

本文所需代码在这里

先查看集群状态

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$ kubectl get nodes
NAME         STATUS    ROLES     AGE       VERSION
k8s-master   Ready     master    15d       v1.8.4
k8s-node-1   Ready     <none>    15d       v1.8.4
k8s-node-2   Ready     <none>    15d       v1.8.4

ingress 有多种方式

  • deployment 自由调度
  • daemonset 全局调度

官方部署现在是 deployment 方式。在 deployment 自由调度过程中，由于我们需要约束 controller 调度到指定的 node 中，所以需要对 node 进行 label 标签。

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$ kubectl label nodes k8s-node-1 ingress=proxy
node "k8s-node-1" labeled
$ kubectl label nodes k8s-node-2 ingress=proxy
node "k8s-node-2” labeled

$ kubectl get nodes --show-labels
NAME         STATUS    ROLES     AGE       VERSION   LABELS
k8s-master   Ready     master    15d       v1.8.4    beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/hostname=k8s-master,node-role.kubernetes.io/master=
k8s-node-1   Ready     <none>    15d       v1.8.4    beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,ingress=proxy,kubernetes.io/hostname=k8s-node-1
k8s-node-2   Ready     <none>    15d       v1.8.4    beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,ingress=proxy,kubernetes.io/hostname=k8s-node-2

安装

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$ kubectl apply -f namespace.yaml 
$ kubectl apply -f default-backend.yaml 
$ kubectl apply -f configmap.yaml 
$ kubectl apply -f tcp-services-configmap.yaml 
$ kubectl apply -f udp-services-configmap.yaml 
$ kubectl apply -f rbac.yaml 
$ kubectl apply -f with-rbac.yaml

$ kubectl get pods --all-namespaces -l app=ingress-nginx -o wide
NAMESPACE       NAME                                        READY     STATUS    RESTARTS   AGE       IP              NODE
ingress-nginx   nginx-ingress-controller-64f7567b77-dv7cn   1/1       Running   0          6h        172.31.21.148   k8s-node-2
ingress-nginx   nginx-ingress-controller-64f7567b77-zcvkt   1/1       Running   0          6h        172.31.21.147   k8s-node-1

使用

jenkins

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apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: jenkins-ui
spec:
  rules:
  - host: jenkins.idealsoftone.com
    http:
      paths:
      - path: /
        backend:
          serviceName: jenkins-ui
          servicePort: 8080

harbor

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apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: harbor-ui
spec:
  rules:
  - host: hub.idealsoftone.com
    http:
      paths:
      - path: /
        backend:
          serviceName: harbor-ui
          servicePort: 80