kubernetes 容器之间怎么进行网络通信

[fangwenxue]

try:
    _redis_client = Redis('redis')
    print(_redis_client.info())
except Exception as e:
    print(e)

• docker yml

version: "3"
services:
  web:
    build: .
    ports:
      - "8080:8080"
    restart: always

  redis:
    image: redis:5-alpine
    ports:
      - "6379:6379"
    volumes:
      - "/data"
    restart: always

• k8s.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: pytest
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: pytest
    spec:
      containers:
        - name: web
          image: '..'
          ports:
            - containerPort: 8080

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis
spec:
    spec:
      volumes:
        - name: redis-data
      containers:
        - name: redis
          image: redis:5-alpine
          ports:
            - containerPort: 6379
              protocol: TCP
          volumeMounts:
            - name: redis-data
              mountPath: /data
  selector:
    matchLabels:
      app: redis


---

apiVersion: v1
kind: Service
metadata:
  name: web
spec:
  type: NodePort
  ports:
  - name: "web"
    port: 8080
  selector:
    app: pytest

---
apiVersion: v1
kind: Service
metadata:
  name: redis
spec:
  type: NodePort
  ports:
  - name: "redis"
    port: 6379
  selector:
    app: redis

• docker yml 可以连上 redis
• k8s yml 连不上 redis

怎么连上 k8s 的 redis

[qoo2019]

最简单的 nodeport 映射个端口

[zeron889]

这个有两种方式，一个是走 cluster ip 的 svc，和走 nodeport 的主机暴露端口

[julyclyde]

运行 docker 的时候别用 NAT 模式