1. ingress
Ingress 公开了从集群外部到集群内 services 的HTTP和HTTPS路由。 流量路由由 Ingress 资源上定义的规则控制。
internet
|
[ Ingress ]
--|-----|--
[ Services ]
参考网站:https://kubernetes.io/zh/docs/concepts/services-networking/ingress/
2.部署ingress-nginx
部署参考:https://github.com/kubernetes/ingress-nginx/blob/master/docs/deploy/index.md
如果镜像拉不下来换成 阿里云的源即可
ingress-nginx-controller 替换成 阿里云的源:registry.cn-hangzhou.aliyuncs.com/google_containers/nginx-ingress-controller
3. 部署Service
apiVersion: v1
kind: Service
metadata:
name: ingress-nginx
namespace: ingress-nginx
spec:
externalIPs:
- 192.168.0.200
- 192.168.0.201
ports:
- name: http
port: 80
targetPort: 80
protocol: TCP
- name: https
port: 443
targetPort: 443
protocol: TCP
selector:
app.kubernetes.io/name: ingress-nginx
selector不要写错了,这里的selector 针对v0.28.0 yaml 中的deployment,为了方便先用 externalIPs 来访问。
4. 部署一个ingress,用户访问
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: simple-fanout-example
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /home/$2
spec:
rules:
- http:
paths:
- path: /java(/|$)(.*)
backend:
serviceName: spring-boot-demo-svc
servicePort: 8080
访问 192.168.0.200/java/index 即可实现访问 spring-boot-demo-svc:8080/home/index
假如我现在有三个胖服务:
- service1 -> service1:8080/api/xxx
- service2 ->service2:8080/api/xxx
- service3 ->service3:8080/api/xxx
那么我的ingress即可配置为
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: simple-fanout-example
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /api/$2
spec:
rules:
- http:
paths:
- path: /service1(/|$)(.*)
backend:
serviceName: service1
servicePort: 80
service2、3同理,
访问即为:192.168.0.200/service1/values -> service1/api/values