Dockerfile to build a MariaDB Server Image.
- Configuration tweaked to use all around settings for general usage - Can be changed
- Can use official Mysql/MariaDB environment variables (MYSQL_USER, MYSQL_PASSWORD, MYSQL_ROOT_PASSWORD)
- Allows for automatically creating multiple databases on container initialization
- Automatic Table/DB Upgrade support if MariaDB version has changed
- Includes MySQL Tuner inside image to optimize your configuration
- Zabbix Monitoring for metrics
Also has the capability of backing up embedded in the container based on the tiredofit/dbbackup image which includes the following features:
-
dump to local filesystem
-
Backup all databases
-
choose to have an MD5 sum after backup for verification
-
delete old backups after specific amount of time
-
choose compression type (none, gz, bz, xz)
-
select how often to run a dump
-
select when to start the first dump, whether time of day or relative to container start time
-
This Container uses a customized Alpine Linux base which includes s6 overlay enabled for PID 1 Init capabilities, zabbix-agent for individual container monitoring, Cron also installed along with other tools (bash,curl, less, logrotate, mariadb-client, nano, vim) for easier management. It also supports sending to external SMTP servers..
Automated builds of the image are available on Docker Hub and is the recommended method of installation.
docker pull tiredofit/mariadb-
The quickest way to get started is using docker-compose. See the examples folder for a working docker-compose.yml that can be modified for development or production use.
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Set various environment variables to understand the capabilities of this image.
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Map persistent storage for access to configuration and data files for backup.
The following directories are used for configuration and can be mapped for persistent storage.
| Directory | Description |
|---|---|
/var/lib/mysql |
MySQL Data Directory |
/etc/mysql/conf.d |
Optional directory to put .cnf files for additional directives |
/backup |
Optional directory for backups |
Along with the Environment Variables from the Base image, below is the complete list of available options that can be used to customize your installation.
| Parameter | Description |
|---|---|
CHARACTER_SET |
Set Default Character Set - Default utf8mb4 |
COLLATION |
Set Default Collation - Default utf8mb4_general_ci |
ROOT_PASS |
Root Password for Instance (e.g. password) |
DB_AUTO_UPGRADE |
If MariaDB has changed from first time image has been used, automatically upgrade DBs and tables to latest versions - TRUE / FALSE - Default: TRUE` |
DB_CONFIGURATION |
Type of Configuration - standard, or default - Default - standard |
DB_NAME |
Optional - Automatically Create Database - Seperate with commas for multiple databases |
DB_USER |
Optional - Automatically Assign Username Priveleges to Database (e.g. mysqluser) |
DB_PASS |
Password for authentication to above database (e.g. password) |
- With regards to
DB_CONFIGURATIONdefault- Means the default my.cnf file from MariaDBstandard- My own settings that I find work for my own DB servers.
This image can also backup databases on a scheduled basis as well. These environment variables are:
| Parameter | Description |
|---|---|
DB_BACKUP |
Enable TRUE or disable FALSE embedded backup routines - Default FALSE |
DB_BACKUP_COMPRESSION |
Use either Gzip GZ, Bzip2 BZ, XZip XZ, or none NONE - Default GZ |
DB_BACKUP_DUMP_FREQ |
How often to do a dump, in minutes. Defaults to 1440 minutes, or once per day. |
DB_BACKUP_DUMP_BEGIN |
What time to do the first dump. Defaults to immediate. Must be in one of two formats |
Absolute HHMM, e.g. 2330 or 0415 |
|
Relative +MM, i.e. how many minutes after starting the container, e.g. +0 (immediate), +10 (in 10 minutes), or +90 in an hour and a half |
|
DB_BACKUP_CLEANUP_TIME |
Value in minutes to delete old backups (only fired when dump freqency fires). 1440 would delete anything above 1 day old. You don't need to set this variable if you want to hold onto everything. |
DB_BACKUP_MD5 |
Generate MD5 Sum in Directory, TRUE or FALSE - Default TRUE |
DB_BACKUP_PARALLEL_COMPRESSION |
Use multiple cores when compressing backups TRUE or FALSE - Default TRUE |
DB_BACKUP_SPLIT_DB |
If using root as username and multiple DBs on system, set to TRUE to create Seperate DB Backups instead of all in one. - Default FALSE |
The following ports are exposed.
| Port | Description |
|---|---|
3306 |
MariaDB Server |
For debugging and maintenance purposes you may want access the containers shell.
docker exec -it (whatever your container name is e.g. mariadb) bashThis image comes with Mysql Tuner. Simply enter inside the container and execute mysql-tuner along with your arguments.
Manual Backups can be perforemd by entering the container and typing backup-now
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