kubernetes 1.2.5 ingress ssl

0. 环境

1. kubernetes 集群
2. kubectl 客户端

增加ssl的重点在于

• 自定义config文件中定义证书文件
• mount证书和配置文件到pod中
• ingress规则那边增加secret证书到tls traefik 官方文档

1. 准备secret

# 将tls.crt 和 tls.key 上传到服务器上
ls cert/tls.*
cert/tls.crt  cert/tls.key

# 创建secret
kubectl create secret --namespace=kube-system tls dc-chain-secret --key ./cert/tls.key --cert ./cert/tls.crt

注意命名空间要设定为kube-system，不然traefik在kube-system命名空间那边找不到secret

2. 准备rbac

echo '---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: traefik-ingress-controller
rules:
  - apiGroups:
      - ""
    resources:
      - services
      - endpoints
      - secrets
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - extensions
    resources:
      - ingresses
    verbs:
      - get
      - list
      - watch
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: traefik-ingress-controller
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: traefik-ingress-controller
subjects:
- kind: ServiceAccount
  name: traefik-ingress-controller
  namespace: kube-system' > traefik-rbac.yaml

kubectl apply -f traefik-rbac.yaml

3. 准备 configmap

echo 'apiVersion: v1
kind: ConfigMap
metadata:
  name: dc-chain-traefik-conf
  namespace: kube-system
data:
  traefik.toml: |
    # traefik config
    logLevel = "INFO"
    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 = "/ssl/example.com/tls.crt"
          KeyFile = "/ssl/example.com/tls.key"

    [web]
    address = ":8080"

    [kubernetes]
    namespaces = [ "default", "kube-system" ]' > traefik-configmap.yaml

kubectl apply -f traefik-configmap.yaml

3. 准备 deployment 和 service

echo '---
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:
  template:
    metadata:
      labels:
        k8s-app: traefik-ingress-lb
        name: traefik-ingress-lb
    spec:
      serviceAccountName: traefik-ingress-controller
      terminationGracePeriodSeconds: 60
      hostNetwork: true
      volumes:
        - name: dc-chain-secret
          secret:
            secretName: dc-chain-secret
        - name: dc-chain-traefik-conf
          configMap:
            name: dc-chain-traefik-conf
      containers:
      - image: traefik
        name: traefik-ingress-lb
        volumeMounts:
          - mountPath: /config
            name: dc-chain-traefik-conf
          - mountPath: /ssl/example.com
            name: dc-chain-secret
        ports:
        - name: http
          containerPort: 80
          hostPort: 80
        - name: admin
          containerPort: 8080
        - name: https
          containerPort: 443
          hostPort: 443
        securityContext:
          privileged: true
        args:
        - --configfile=/config/traefik.toml
        - -d
        - --api
        - --kubernetes
---
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: http
    - protocol: TCP
      port: 443
      name: https
    - protocol: TCP
      port: 8080
      name: admin
  type: NodePort' > traefik-ds.yaml

kubectl apply -f traefik-ds.yaml

4. 准备 ingress

echo 'apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: dc-chain-service
  annotations:
    kubernetes.io/ingress.class: traefik
spec:
  #tls:
  #  - secretName: dc-chain-secret
  #    hosts:
  #      - example.com
  rules:
  - host: example.com
    http:
      paths:
      - path: /
        backend:
          serviceName: dc-chain-service
          servicePort: 8080' > traefik-ingress.yaml

kubectl apply -f traefik-ingress.yaml