From Gentoo Wiki
Jump to:navigation Jump to:search

MariaDB is an enhanced, drop-in MySQL replacement.

In Gentoo, dev-db/mariadb is the default package for items that depend on virtual/mysql.


USE flags

USE flags for dev-db/mariadb An enhanced, drop-in replacement for MySQL

backup Build mariadb-backup which supports SST and hot backup of InnoDB, Aria and MyISAM including compression and encryption
bindist Flag to enable or disable options for prebuilt (GRP) packages (eg. due to licensing issues)
columnstore Build the ColumnStore storage engine
cracklib Support for cracklib strong password checking
debug Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see
extraengine Add support for alternative storage engines (Archive, CSV, Blackhole, Federated(X), Partition)
galera Enables galera replication
innodb-lz4 Enables lz4 compression methods for InnoDB/XtraDB
innodb-lzo Enables lzo compression methods for InnoDB/XtraDB
innodb-snappy Enables snappy compression methods for InnoDB/XtraDB using app-arch/snappy
jdbc Enable the CONNECT engine to access foreign databases via JDBC
jemalloc Use dev-libs/jemalloc for memory management
kerberos Add kerberos support
latin1 Use LATIN1 encoding instead of UTF8
mroonga Add support for the Mroonga engine for interfacing with the Groonga text search
numa Enable NUMA support using sys-process/numactl (NUMA kernel support is also required)
odbc Add ODBC Support (Open DataBase Connectivity)
oqgraph Add support for the Open Query GRAPH engine
pam Enable the optional PAM authentication plugin for the server
perl Add optional support/bindings for the Perl language
profiling Add support for statement profiling (requires USE=community).
rocksdb Add support for RocksDB; a key/value, LSM database optimized for flash storage
s3 Build the S3 storage engine
selinux !!internal use only!! Security Enhanced Linux support, this must be set by the selinux profile or breakage will occur
server Build the server program
sphinx Add suport for the sphinx full-text search engine
sst-mariabackup Add tools needed to support the mariabackup SST method
sst-rsync Add tools needed to support the rsync SST method
static !!do not set this during bootstrap!! Causes binaries to be statically linked instead of dynamically
systemd Enable use of systemd-specific libraries and features like socket activation or session tracking
systemtap Build support for profiling and tracing using dev-debug/systemtap
tcmalloc Use the dev-util/google-perftools libraries to replace the malloc() implementation with a possibly faster one
test Install upstream testsuites for end use.
xml Add support for XML files
yassl Enable SSL connections and crypto functions using the bundled yaSSL


Install dev-db/mariadb:

root #emerge --ask dev-db/mariadb

Preliminary configuration

Gentoo MariaDB package maintainers will help you set up MariaDB through the configuration option in the ebuild.

root #emerge --config dev-db/mariadb

The configuration will create a database, set proper permissions, and assist you in creating a secure root password (this is for the MariaDB root account, which is not related to the Linux root account).

When configuring MariaDB on a system with 'localhost' as its hostname, the "Your machine must NOT be named localhost" error is produced. The following steps will allow configuration by changing the hostname.

In the event MariaDB configuration fails due to 'localhost' as hostname, update the system hostname variable to a name other than 'localhost' in /etc/conf.d/hostname:

root #sed -i 's/localhost/larry/g' /etc/conf.d/hostname

Restart the hostname service:

root #rc-service hostname restart

Then, run the configuration command:

root #emerge --config dev-db/mariadb



To have MariaDB start automatically at boot, add it to the default runlevel:

root #rc-update add mysql default

If MariaDB is ready to start, then start the service:

root #rc-service mysql start


  • With MariaDB < 10.1
root #systemctl enable mysqld.service
  • With MariaDB >= 10.1.8
root #systemctl enable mariadb.service
MariaDB 10.1.8 includes a unit named mariadb.service that uses notify instead of a script to check if the system is alive.


In-database configuration

When the database is set up and running, connect to MariaDB using the mysql client application.

user $mysql -u root -p -h localhost
Enter root password: 
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 86415
Server version: 5.5.32-MariaDB-log Source distribution

Copyright (c) 2000, 2013, Oracle, Monty Program Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]>

Custom options

Beginning with MariaDB 10.2, the configuration file my.cnf, includes a single directive to include /etc/mysql/mariadb.d and all files located within. Gentoo includes a file for server settings and one for client settings. Create your own files in this directory and they will be added together in alphabetical order. The base configuration accepts almost all the defaults and only tweaks paths. Tune your server to your liking.


Compiling against

Beginning with MariaDB 10.2, a new LGPL client library is included.

With MariaDB 10.2.8, the server and client headers were separated. This causes compilation errors in some programs which previously relied on server features.


One example is MYSQL_SERVER_VERSION. A quick fix can be:


Ultimately, MYSQL_SERVER_VERSION should be removed and the MYSQL_VERSION_ID integer be used in it's place for version identification.

See also

  • MySQL/Startup_Guide — outlines basic instructions for users on setting up and using MySQL on Linux.
  • PostgreSQL — a free and open source relational database management system (RDBMS).

External resources