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condition was removed compose spec in versions 3.0 to 3.8 but is now back! Using version of the compose spec v3.9, you can use condition as an option in long syntax form of depends_on.

I use docker compose to start MySQL and Java Web projects, The startup of JavaWeb needs to rely on MySQL to create complete data, so I use healthcheck

But there is a problem with the healthcheck of mysql, this is my docker-compose

# docker-compose.yml
version: "3.9"  

services:

  mysql:
    build:
      context: ./mysql
    command: [
        'mysqld',
        '--character-set-server=utf8mb4',
        '--collation-server=utf8mb4_unicode_ci',
        '--default-time-zone=+8:00',
        '--lower-case-table-names=1'
    ]
    ports:
      - "3306:3306"
    environment:
      MYSQL_DATABASE: fuba-db
      MYSQL_ROOT_PASSWORD: fb123456
    healthcheck:
      test: "mysql -uroot -p$$MYSQL_ROOT_PASSWORD  -e 'SELECT * FROM factor_header' fuba-db "
      interval: 1s
      timeout: 3s
      retries: 3

  redis:
    build:
      ......

  nginx:
    build:
      ......

  fubaquant:
    build:
      context: ./webapps
    ports:
      - "8080:8080"
    volumes:
      - /mnt/java/jar:/home/ruoyi  #jar包
    depends_on:
      mysql:
        condition: service_healthy
      redis:
        condition: service_started

The statement in error is:

test: "mysql -uroot -p$$MYSQL_ROOT_PASSWORD  -e 'SELECT * FROM factor_header' fuba-db "

The console outputs :

pro-mysql-1      | 2022-04-07T08:16:54.203710Z 1 [Warning] root@localhost is created with an empty password ! Please consider switching off the --initialize-insecure option.
container for service "mysql" is unhealthy

Since fubaquant depends_on mysql healthcheck, fubaquant is not started either

The health check log of the mysql container is:

I checked th healthcheck log of mysql and it's also healthy

thanks for any help

Answers

I configured health check to only allow 3 retries, 1 second intervals. While compose is starting java, mysql service has not reached the healthy state within this 3s delay, so compose stops and report this error. It's work after I increased the number of retries