CODEWITHSUNDEEP
dockerdocker-composedockerfile
Radu Olteanu
Radu Olteanu

Reputation: 443

How to run a docker image only after another active image finished a task?

I have the following configuration:

services:
  db:
    image: mysql:5.6
    command: --default-authentication-plugin=mysql_native_password --sql-mode=""
    volumes:
      - ./schema:/docker-entrypoint-initdb.d
    ports:
      - 3309:3306
    environment:
      MYSQL_ROOT_PASSWORD: test
      MYSQL_DATABASE: test    

  migration-tool:
        depends_on:
          - db
        build:
            context: ../MigrationTool.MigrationTool/
            dockerfile: Dockerfile.migrate

The db service executes some long running inserts into the database but migration-tool service will also want to create a database(with inserts) on the db service image, this will cause some exceptions into the migration-tool service, precisely, the mysql db image refuses the connection from the migraton-tool image. Everything works fine, only after the db service inserts are done, but this operation usually takes a few minutes.

I need a way to control the start of the 2nd image(migration-tool) only after all the inserts are done in the 1st image. Or maybe there's a better solution to the described scenario. Thanks.

Upvotes: 1

Views: 556

Answers (1)

Ron van der Heijden
Ron van der Heijden

Reputation: 15080

You can create a healthcheck, for example:

healthcheck:
  test: ["CMD", "mysqladmin" ,"ping", "-h", "localhost"]
  interval: 1m30s
  timeout: 10s
  retries: 3
  start_period: 40s

Upvotes: 1

Related Questions