在 Kubernetes v1.0 版本, Service 是 “4層”(TCP/UDP over IP)概念。 在 Kubernetes v1.1 版本,新增了 Ingress API(beta 版),用來表示 “7層”(HTTP)服務
資料信息 【可實現7層代理】
Ingress-Nginx github 地址:https://github.com/kubernetes/ingress-nginx
Ingress-Nginx 官方網站:https://kubernetes.github.io/ingress-nginx/
部署 Ingress-Nginx
下載Ingress-Nginx 文件
wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/nginx-0.28.0/deploy/static/mandatory.yaml
運行配置文件
chmod -R 777 /var/lib/docker
給docker權限,不然會出現問題。
我遇見這個問題,鏈接,你們可以參考一下
kubectl get pod -n ingress-nginx
下載ingress-nginx暴露端口配置文件
wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/nginx-0.28.0/deploy/static/provider/baremetal/service-nodeport.yaml
kubectl apply -f service-nodeport.yaml
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: www.heian.com
http:
paths:
- path: /
backend:
serviceName: nginx-svc
servicePort: 80
實驗
deployment1.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: deployment1
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: svc-1
spec:
ports:
- port: 80
targetPort: 80
protocol: TCP
selector:
name: nginx
deployment2.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: deployment2
spec:
replicas: 2
template:
metadata:
labels:
name: nginx2
spec:
containers:
- name: nginx2
image: wangyanglinux/myapp:v1
imagePullPolicy: IfNotPresent
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: svc-2
spec:
ports:
- port: 80
targetPort: 80
protocol: TCP
selector:
name: nginx2
ingress-nginx
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: ingress1
spec:
rules:
- host: www.heian.com
http:
paths:
- path: /
backend:
serviceName: svc-1
servicePort: 80
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: ingress2
spec:
rules:
- host: www2.heian.com
http:
paths:
- path: /
backend:
serviceName: svc-2
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/rewritetarget | 必須重定向流量的目標URI | 串 |
nginx.ingress.kubernetes.io/sslredirect |
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/forcessl-redirect | 即使Ingress未啓用TLS,也強制重定向到HTTPS |
布爾 |
nginx.ingress.kubernetes.io/approot | 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/useregex | 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