简介

上一篇说明了如何配置运行traefik服务，本篇将会说明如何让traefik支持https请求的转发。

配置traefik-HTTPS

• 用ssl证书创建secret

这里忽略关于如何创建ssl证书的过程，你可以创建新的或使用已有的ssl证书。假设现在已经有ssl.crt,ssl.key文件，并保存在host目录/etc/k8s/ssl/下。
k8s中创建一个secret资源，

[root@kubemaster ssl]kubectl create secret generic traefik-cert --from-file=ssl.crt --from-file=ssl.key -n kube-system
secret "traefik-cert" created

• 创建configmap用于保存traefik的配置

参考traefik/traefik.toml, 创建一个配置文件，放在/etc/k8s/conf/目录下，其内容如下:

[root@kubemaster ssl]cat /etc/k8s/conf/traefik.toml
defaultEntryPoints = ["http","https"]
[entryPoints]
  [entryPoints.http]
  address = ":80"
    [entryPoints.http.redirect]
    entryPoint = "https"
  [entryPoints.https]
  address = ":443"
    [entryPoints.https.tls]
      [[entryPoints.https.tls.certificates]]
      certFile = "/etc/k8s/ssl/ssl.crt"
      keyFile = "/etc/k8s/ssl/ssl.key"

创建configmap:

[root@kubemaster conf]# kubectl create configmap traefik-conf --from-file=traefik.toml -n kube-system
configmap "traefik-conf" created

• 更新traefik服务

我们现在来更新traefik-deployment.yaml文件(建议把原来的文件重命名备份一下)，用以支持https转发, 修改后内容如下：

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: traefik-ingress-controller
  namespace: kube-system
---
kind: DaemonSet
apiVersion: extensions/v1beta1
metadata:
  name: traefik-ingress-controller
  namespace: kube-system
  labels:
    k8s-app: traefik-ingress-lb
spec:
  selector:
    matchLabels:
      k8s-app: traefik-ingress-lb
  template:
    metadata:
      labels:
        k8s-app: traefik-ingress-lb
        name: traefik-ingress-lb
    spec:
      serviceAccountName: traefik-ingress-controller
      terminationGracePeriodSeconds: 60
      hostNetwork: true
      volumes:
      - name: ssl
        secret:
          secretName: traefik-cert
      - name: config
        configMap:
          name: traefik-conf
      containers:
      - image: traefik
        name: traefik-ingress-lb
        volumeMounts:
        - mountPath: "/etc/k8s/ssl/"
          name: "ssl"
        - mountPath: "/etc/k8s/conf/"
          name: "config"
        ports:
        - name: http
          containerPort: 80
        - name: https
          containerPort: 443
        - name: admin
          containerPort: 8080
        args:
        - --configFile=/etc/k8s/conf/traefik.toml
        - --api
        - --kubernetes
        - --logLevel=INFO
---
kind: Service
apiVersion: v1
metadata:
  name: traefik-ingress-service
  namespace: kube-system
spec:
  selector:
    k8s-app: traefik-ingress-lb
  ports:
    - protocol: TCP
      port: 80
      name: web
    - protocol: TCP
      port: 443
      name: https
    - protocol: TCP
      port: 8080
      name: admin
  type: NodePort

更新service相关：

[root@kubemaster k8s]# kubectl apply -f traefik-deployment.yaml
serviceaccount "traefik-ingress-controller" unchanged
daemonset.extensions "traefik-ingress-controller" configured
service "traefik-ingress-service" configured

• 查看ui变化
  
  可以看到此时entry points已支持http/https协议访问。