如何解决入口获得503反馈
我想配置入口以使用我的域名。
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: app-ingress
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$2
spec:
tls:
- hosts:
- example.com
secretName: app-tls
rules:
- host: example.com
http:
paths:
- path: /my-api1(/|$)(.*)
backend:
serviceName: app1
servicePort: 80
- path: /my-api2
backend:
serviceName: app2
servicePort: 80
---
apiVersion: v1
kind: Service
metadata:
name: my-api
spec:
selector:
app: my-api
ports:
- name: app1
port: 3000
targetPort: 80
- name: app2
port: 4000
targetPort: 80
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: user-api
spec:
selector:
matchLabels:
app: user-api
template:
metadata:
labels:
app: user-api
spec:
hostNetwork: true
dnsPolicy: ClusterFirstWithHostNet
containers:
- name: app1
image: XXX
ports:
- name: app1
containerPort: 3000
- name: app2
image: XXX
ports:
- name: app2
containerPort: 4000
我可以通过serverIP：3000（例如172.16.111.211:3000/my-api1）访问app1服务。但是在远程，它总是返回503状态代码（curl https://example.com/my-api1）。
# kubectl describe ingress app-ingress
Name: app-ingress
Namespace: default
Address: serverIP
Default backend: default-http-backend:80 (<error: endpoints "default-http-backend" not found>)
TLS:
app-tls terminates example.com
Rules:
Host Path Backends
---- ---- --------
example.com
/my-api1(/|$)(.*) app1:80 (<error: endpoints "app1" not found>)
/my-api2 app2:80 (<error: endpoints "app2" not found>)
解决方法
- 第一件事是您的服务名称不匹配，您创建了一个名为my-api的服务，但在入口处将其称为app1和app2，这是不可用的。
- 第二个错误是您的部署和服务之间的选择器标签不匹配。使用标签user-api创建但在服务选择器中创建的部署被称为my-api。
- 如果两个应用程序都需要80端口，则必须创建两个不同的服务并在入口中引用。
以下应满足您的要求。
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: app-ingress
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$2
spec:
tls:
- hosts:
- example.com
secretName: app-tls
rules:
- host: example.com
http:
paths:
- path: /my-api1(/|$)(.*)
backend:
serviceName: app1
servicePort: 80
- path: /my-api2
backend:
serviceName: app2
servicePort: 80
---
apiVersion: v1
kind: Service
metadata:
name: app1
spec:
selector:
app: user-api
ports:
- name: app1
port: 3000
targetPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: app2
spec:
selector:
app: user-api
ports:
- name: app2
port: 4000
targetPort: 80
----
apiVersion: apps/v1
kind: Deployment
metadata:
name: user-api
spec:
selector:
matchLabels:
app: user-api
template:
metadata:
labels:
app: user-api
spec:
hostNetwork: true
dnsPolicy: ClusterFirstWithHostNet
containers:
- name: app1
image: XXX
ports:
- name: app1
containerPort: 3000
- name: app2
image: XXX
ports:
- name: app2
containerPort: 4000
您在port和targetPort上犯了一个错误。
应该是：
apiVersion: v1
kind: Service
metadata:
name: my-api
spec:
selector:
app: my-api
ports:
- name: app1
port: 3000
targetPort: 3000
- name: app2
port: 4000
targetPort: 4000
---
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: app-ingress
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$2
spec:
tls:
- hosts:
- example.com
secretName: app-tls
rules:
- host: example.com
http:
paths:
- path: /my-api1(/|$)(.*)
backend:
serviceName: my-api
servicePort: app1
- path: /my-api2
backend:
serviceName: my-api
servicePort: app2
-
port用于公开服务端口 -
targetPort定位到容器暴露端口
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