k8s的ingress使用

ingress

　　可以配置一個入口來提供k8s上service從外部來訪問的url、負載平衡流量、終止SSL和提供基于名稱的虛擬主機。

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配置ingress的yaml：

　　要求域名解析無誤

　　要求service對應的pod正常

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一、test1.domain.com ? -->? service1:8080

apiVersion: extensions/v1beta1
kind: Ingress
metadata:name: test-ingressnamespace: test
spec:rules:- host: test1.domain.comhttp:paths:- backend:serviceName: service1servicePort: 8080path: /

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二、test1.domain.com ? --> ? /aaa ? --> ? service2:8080

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? --> ? /bbb ? --> ? service3:8080

apiVersion: extensions/v1beta1
kind: Ingress
metadata:name: test-ingressnamespace: test
spec:rules:- host: test1.domain.comhttp:paths:- backend:serviceName: service1servicePort: 8080path: /aaa- backend:serviceName: service2servicePort: 8080path: /bbb

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三、test1.domain.com ? -->? service1:8080

　　test2.domain.com ? -->? service4:8080

apiVersion: extensions/v1beta1
kind: Ingress
metadata:name: test-ingressnamespace: test
spec:rules:- host: test1.domain.comhttp:paths:- backend:serviceName: service1servicePort: 8080- host: test2.domain.comhttp:paths:- backend:serviceName: service4servicePort: 8080

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四、test1.domain.com ? -->? service1:8080

　　沒在request中定義主機名(即沒有顯示請求頭)的請求 ? --> ? service5:8080

apiVersion: extensions/v1beta1
kind: Ingress
metadata:name: test-ingressnamespace: test
spec:rules:- host: test1.domain.comhttp:paths:- backend:serviceName: service1servicePort: 8080- http:paths:- backend:serviceName: service5servicePort: 8080

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五、https://test1.domain.com ? -->? service1:8080

apiVersion: extensions/v1beta1
kind: Ingress
metadata:name: test-ingressnamespace: test
spec:rules:- host: test1.domain.comhttp:paths:- backend:serviceName: service1servicePort: 8080tls:- hosts:- test1.domain.comsecretName: domain-tls　　#證書見下

　　證書yaml

apiVersion: v1
data:tls.crt: cert（base64）　　#轉碼見下tls.key: key（base64）
kind: Secret
metadata:name: domain-tlsnamespace: test
type: kubernetes.io/tls

　　base64轉碼

cat fullchain.pem | base64 | tr '\n' ' ' | sed s/[[:space:]]//g   #中間去掉換行和空格
cat privkey.pem | base64 | tr '\n' ' ' | sed s/[[:space:]]//g

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六、nginx中的設置，在ingress是通過annotations來配置的

apiVersion: extensions/v1beta1
kind: Ingress
metadata:name: test-ingressnamespace: testannotations:nginx.ingress.kubernetes.io/proxy-connect-timeout: "600s"nginx.ingress.kubernetes.io/proxy-read-timeout: "600s"nginx.ingress.kubernetes.io/proxy-send-timeout: "600s"
spec:rules:- host: test1.domain.comhttp:paths:- backend:serviceName: service1servicePort: 8080path: /

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詳細ingress鏈接：https://kubernetes.io/docs/concepts/services-networking/ingress/

ingress中annotations的配置選項：https://github.com/kubernetes/ingress-nginx/blob/master/docs/user-guide/nginx-configuration/annotations.md