12、Kubernetes Ingress

資料信息

Ingress-Nginx github 地址：https://github.com/kubernetes/ingress-nginx

Ingress-Nginx 官方網站：https://kubernetes.github.io/ingress-nginx/

Ingress HTTP 代理訪問

deployment、Service、Ingress Yaml 文件

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: nginx-dm
spec:
  replicas: 2
  template:
    metadata:
      labels:
        name: nginx
    spec:
      containers:
      - name: nginx
        image: wangyanglinux/myapp:v1
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 80

apiVersion: v1
kind: Service
metadata:
  name: nginx-svc
spec:
  ports:
  - port: 80
    targetPort: 80
    protocol: TCP
  selector:
    name: nginx

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: nginx-test
spec:
  rules:
  - host: www1.atguigu.com
    http:
      paths:
      - path: /
        backend:
          serviceName: nginx-svc
          servicePort: 80

Ingress HTTPS 代理訪問

創建證書，以及 cert 存儲方式

openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:2048 -keyout tls.key -out tls.crt -subj "/CN=nginxsvc/O=nginxsvc" kubectl create secret tls tls-secret --key tls.key --cert tls.crt

deployment、Service、Ingress Yaml 文件

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: nginx-test
spec:
  tls:
  - hosts:
    - foo.bar.com
    secretName: tls-secret
  rules:
  - host: foo.bar.com
    http:
      paths:
      - path: /
        backend:
          serviceName: nginx-svc
          servicePort: 80

Nginx 進行 BasicAuth

yum -y install httpd
htpasswd -c auth foo
kubectl create secret generic basic-auth --from-file=auth

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-with-auth
  annotations:
    nginx.ingress.kubernetes.io/auth-type: basic
    nginx.ingress.kubernetes.io/auth-secret: basic-auth
    nginx.ingress.kubernetes.io/auth-realm: 'Authentication Required - foo'
spec:
  rules:
  - host: foo2.bar.com
    http:
      paths:
      - path: /
        backend:
          serviceName: nginx-svc
          servicePort: 80

Nginx 進行重寫

名稱	描述	值
nginx.ingress.kubernetes.io/rewrite-target	必須重定向流量的目標URI	串
nginx.ingress.kubernetes.io/ssl-redirect	指示位置部分是否僅可訪問SSL（當Ingress包含證書時默認爲True）	布爾
nginx.ingress.kubernetes.io/force-ssl-redirect	即使Ingress未啓用TLS，也強制重定向到HTTPS	布爾
nginx.ingress.kubernetes.io/app-root	定義Controller必須重定向的應用程序根，如果它在’/'上下文中	串
nginx.ingress.kubernetes.io/use-regex	指示Ingress上定義的路徑是否使用正則表達式	布爾

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: nginx-test
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: http://foo.bar.com:31795/hostname.html
spec:
  rules:
  - host: foo10.bar.com
    http:
      paths:
      - path: /
        backend:
          serviceName: nginx-svc
          servicePort: 80