k8s如何使用RDS

1把RDS的信息做成configmap

apiVersion: v1
kind: ConfigMap
Metadata:
  name: nacos-cm
data:
  MysqL.host: "阿里云 RDS 内网地址"
  MysqL.db.name: "数据库名"
  MysqL.port: "数据库端口"
  MysqL.user: "数据库用户名"
  MysqL.password: "数据库密码"

2在deployment里定义env并引用这些configmap

可提前把这些代码整理好，目的是为了把MysqL_SERVICE_HOST，MysqL_SERVICE_DB_NAME，MysqL_SERVICE_PORT，MysqL_SERVICE_USER，MysqL_SERVICE_PASSWORD

这些变量给到后台，让后台使用这些变量连接数据库

env:
  - name: MysqL_SERVICE_HOST
    valueFrom:
      configMapKeyRef:
        name: nacos-cm
        key: MysqL.host               
  - name: MysqL_SERVICE_DB_NAME
    valueFrom:
      configMapKeyRef:
        name: nacos-cm
        key: MysqL.db.name
  - name: MysqL_SERVICE_PORT
    valueFrom:
      configMapKeyRef:
        name: nacos-cm
        key: MysqL.port
  - name: MysqL_SERVICE_USER
    valueFrom:
      configMapKeyRef:
        name: nacos-cm
        key: MysqL.user
  - name: MysqL_SERVICE_PASSWORD
    valueFrom:
      configMapKeyRef:
        name: nacos-cm
        key: MysqL.password

 3后台数据库连接示例代码：

url: jdbc:MysqL://${MysqL_SERVER:127.0.0.1}:${MysqL_PORT:3306}/${MysqL_DB_NAME:blogDB}?useUnicode=true&characterEncoding=utf-8&useSSL=false