api: restart: always image: netapi ports: - "5000:5000" environment: - TZ=Asia/Shanghai depends_on: - mysql networks: s2_net: ipv4_address: 172.66.9.5在 api 的 depends_on 设置 mysql ,表示 api 依赖 mysql ,只有当 mysql 启动后,api 才会启动。但很可惜,这里的 mysql 启动指的是 mysql 的容器是否启动了,而不是 mysql 的服务是否启动。所以,这种配置只能控制容器的启动顺序,并不能解决问题。
2.api 服务的 depends_on 监听这个检查,只有当 mysql 服务正常启动后,api 才会启动。
// 堆代码 duidaima.com version: "3" networks: s2_net: driver: bridge ipam: driver: default config: - subnet: 172.66.9.0/24 services: mysql: restart: always image: mysql/mysql-server:latest ports: - "3306:3306" environment: - TZ=Asia/Shanghai - MYSQL_ROOT_PASSWORD=123456 healthcheck: test: ["CMD", "mysqladmin" ,"ping", "-h", "localhost", "-u", "root", "--password=123456"] interval: 3s timeout: 5s retries: 3 start_period: 5s command: mysqld --character-set-server=utf8mb4 --collation-server=utf8mb4_general_ci --default-authentication-plugin=mysql_native_password networks: s2_net: ipv4_address: 172.66.9.2 api: restart: always image: netapi ports: - "5000:5000" environment: - TZ=Asia/Shanghai depends_on: mysql: condition: service_healthy networks: s2_net: ipv4_address: 172.66.9.5mysql 服务中添加 healthcheck 属性,子属性解释如下:
docker-compose -v安装 docker-compose 可以使用下面命令:
curl -L https://github.com/docker/compose/releases/download/1.28.0/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose sudo chmod +x /usr/local/bin/docker-compose升级到 1.28.0 后,执行 docker-compose 的命令时可能会出现错误,错误提示如下:
[29250] Error loading Python lib '/tmp/_MEIYmY20a/libpython3.9.so.1.0': dlopen: /lib64/libc.so.6: version `GLIBC_2.28' not found (required by /tmp/_MEIYmY20a/libpython3.9.so.1.0)按照提示 google 下,会有很多方式解决,或者直接参考这个链接:https://blog.csdn.net/wangying202/article/details/113178159。