ClusterIP服务无法从集群pod内访问

Question

在我的集群UI和USER中有2个部署。这两者都由Cluster IP服务公开。有一个入口使两个服务都可以公开访问。

现在当我执行"kubectl exec -it UI-POD -/bin/sh"然后尝试"ping USER-SERVICE-CLUSTER-IP: port";它不工作。

所有我得到的是没有包返回，即一个失败的消息。

附加.yml文件

apiVersion: apps/v1
kind: Deployment
metadata:
name: user-service-app
labels:
app: user-service-app
spec:
replicas: 1
selector:
matchLabels:
app: user-service-app
template:
metadata:
labels:
app: user-service-app
spec:
containers:
- name: user-service-app
image: <MY-IMAGE-URL>
imagePullPolicy: Always
ports:
- containerPort: 3000
livenessProbe:
httpGet:
path: /ping
port: 3000
readinessProbe:
httpGet:
path: /ping
port: 3000


---
apiVersion: "v1"
kind: "Service"
metadata:
name: "user-service-svc"
namespace: "default"
labels:
app: "user-service-app"
spec:
type: "ClusterIP"
selector:
app: "user-service-app"
ports:
- protocol: "TCP"
port: 80
targetPort: 3000
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: ui-service-app
labels:
app: ui-service-app
spec:
replicas: 1
selector:
matchLabels:
app: ui-service-app
template:
metadata:
labels:
app: ui-service-app
spec:
containers:
- name: ui-service-app
image: <MY-IMAGE-URL>
imagePullPolicy: Always
ports:
- containerPort: 3000
---
apiVersion: "v1"
kind: "Service"
metadata:
name: "ui-service-svc"
namespace: "default"
labels:
app: "ui-service-app"
spec:
type: "ClusterIP"
selector:
app: "ui-service-app"
ports:
- protocol: "TCP"
port: 80
targetPort: 3000


---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: awesome-ingress
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$2
spec:
ingressClassName: nginx
defaultBackend:
service:
name: ui-service-svc
port:
number: 80
rules:
- http:
paths:      
- path: /login
pathType: Prefix
backend:
service:
name: ui-service-svc
port:
number: 80
- path: /user(/|$)(.*)
pathType: Prefix
backend:
service:
name: user-service-svc
port:
number: 80

Answer 1

Ping通过ICMP (Internet Control Message Protocol)数据包进行操作。这不是你服务的对象。您可以在UI pod中尝试curl USER-SERVICE-CLUSTER-IP/ping或curl http://user-service-svc/ping。