Marinus Klasen

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December 31, 2021

docker-compose, mysql:5.7 and configuration files.

Marinus Klasen

In another blog post, I wrote about solving an issue with io_setup(). The issue was resolved by disabling native AIO in the configuration files.

The database service in docker compose

  db:
    image: mysql:5.7
    volumes:
      - "./path/to/my.cnf:/etc/alternatives/my.cnf"

This is as minimalist as it gets. We’re using the mysql:5.7 image. The image automatically loads the configuration file in /etc/alternatives/my.cnf allowing us to make changes in the configuration of mysql.

Example content

[mysqld]
innodb_use_native_aio = 0

Any configuration settings can be added here.

Sample configuration

Oinume published a nice example of a configuration file, which you can find here:

https://gist.github.com/oinume/fc9b72bd8b14ab07e94c

About Marinus Klasen

Marinus has been working in software/web development for more than a decade. Since 2020 his attention shifted on sharing knowledge and developing products and tools for sharing knowledge.

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