fix

docker-compose.iot-business.yml

 version: '3.9'
 services:
+  mysql:
+    image: mysql:8.0.26
+    container_name: mysql
+    command:
+    # MySQL8的密码验证方式默认是 caching_sha2_password，但是很多的连接工具还不支持该方式
+    # 就需要手动设置下mysql的密码认证方式为以前的 mysql_native_password 方式
+      --default-authentication-plugin=mysql_native_password
+      --character-set-server=utf8mb4
+      --collation-server=utf8mb4_general_ci
+      --lower-case-table-names=1 # 设置表名大小写不敏感
+    # docker的重启策略：在容器退出时总是重启容器，但是不考虑在Docker守护进程启动时就已经停止了的容器
+    restart: always
+    environment:
+      MYSQL_ROOT_PASSWORD: huansi@V3 # root用户的密码
+      MYSQL_USER: huansi # 创建新用户
+      MYSQL_PASSWORD: huansi.net # 新用户的密码
+      TZ: Asia/Shanghai
+    ports:
+      - 3306:3306
+    volumes:
+      - ./mysql/data:/var/lib/mysql
+      - ./mysql/conf:/etc/mysql/conf.d
+      - ./mysql/logs:/logs 
   iot-job: 
     image: registry.cn-hangzhou.aliyuncs.com/hsyl_iot/xxl-job:v3
     restart: always
     ports:
       - "8099:8080"
     environment:
-      PARAMS: "--spring.datasource.url=jdbc:mysql://192.168.4.18:3306/iot_job?Unicode=true&characterEncoding=UTF-8&useSSL=false --spring.datasource.username=root --spring.datasource.password=huansi@V3"    
+      PARAMS: "--spring.datasource.url=jdbc:mysql://mysql:3306/iot_job?Unicode=true&characterEncoding=UTF-8&useSSL=false --spring.datasource.username=root --spring.datasource.password=huansi@V3"    
     
   iot-dbapi:
     image: registry.cn-hangzhou.aliyuncs.com/hsyl_iot/db-api:v3
@@ -15,7 +38,7 @@ services:
       - "8523:8523"
       - "8525:8525"
     environment:
-      - DB_URL=jdbc:mysql://192.168.4.18:3306/iot_dbapi?useSSL=false&characterEncoding=UTF-8&serverTimezone=GMT%2B8
+      - DB_URL=jdbc:mysql://mysql:3306/iot_dbapi?useSSL=false&characterEncoding=UTF-8&serverTimezone=GMT%2B8
       - DB_USERNAME=root
       - DB_PASSWORD=huansi@V3
       - DB_DRIVER=com.mysql.cj.jdbc.Driver