amazee.io CentOS 7 Dockerfile with mariadb installed, based on amazeeio/centos:7 Docker Image.
This Dockerfile is intended to be used as an base for any mariadb needs within amazee.io. It follows the awesome work already happening in the official mariadb docker image just with some adaptions for amazeeio and of course running on centos.
- MariaDB is installed via https://downloads.mariadb.org/mariadb/repositories
- It is shipped with a complete empty
/var/lib/mysql(during installation mysql is actually started and therefore some things filled in/var/lib/mysql, but we remove it right afterwards for consistency) - the docker-entrypoint file is also based on the official mariadb one and can setup a new Server, Database, User when container is started the first time and
/var/lib/mysqlis empty
This image is prepared to be used on amazee.io which leverages OpenShift. There are therefore some things already done:
- Folder permissions are automatically adapted with
fix-permissionsso this image will work with a random user and therefore also on OpenShift. - all files within
/etc/my.cnf.d/are parsed through envplate with an container-endpoint.
The included mariadb config contains sane values that will make the usage of maradbeasier. See server.cnf for all of it.
If you don't like any of these configs, you have two possibilities:
- If they are changeable via environment variables, use them (prefeered version, see list of environment variables below).
- Create your own
server.cnfconfig and overwrite the provided one with your own configuration.
Environment variables are meant to do common behavior changes of nginx. If you need more then these it is best to replace the nginx.conf file all together.
| Environment Variable | Default | Description |
|---|---|---|
MARIADB_INNODB_BUFFER_POOL_SIZE |
256M |
InnoDB buffer pool size in bytes. The primary value to adjust on a database server with entirely/primarily XtraDB/InnoDB tables, can be set up to 80% of the total memory in these environments. More at mariadb.com |