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Updated: July 2014

mysql_install_db (1)


mysql_install_db - initialize MySQL data directory


mysql_install_db [options]


Misc. Reference Manual Pages                   MYSQL_INSTALL_DB()

     mysql_install_db - initialize MySQL data directory

     mysql_install_db [options]

     mysql_install_db initializes the MySQL data directory and
     creates the system tables that it contains, if they do not
     exist.  mysql_install_db is a shell script and is available
     only on Unix platforms. (As of MySQL 5.6, mysql_install_db
     is a Perl script and can be used on any system with Perl

     To invoke mysql_install_db, use the following syntax:

         shell> mysql_install_db [options]

     Because the MySQL server, mysqld, needs to access the data
     directory when it runs later, you should either run
     mysql_install_db from the same system account that will be
     used for running mysqld or run it as root and use the --user
     option to indicate the user name that mysqld will run as. It
     might be necessary to specify other options such as
     --basedir or --datadir if mysql_install_db does not use the
     correct locations for the installation directory or data
     directory. For example:

         shell> scripts/mysql_install_db --user=mysql \
                  --basedir=/opt/mysql/mysql \

     mysql_install_db needs to invoke mysqld with the --bootstrap
     and --skip-grant-tables options.


         If you have set a custom TMPDIR environment variable
         when performing the installation, and the specified
         directory is not accessible, mysql_install_db may fail.
         If so, unset TMPDIR or set TMPDIR to point to the system
         temporary directory (usually /tmp).

     mysql_install_db supports the following options, which can
     be specified on the command line or in the
     [mysql_install_db] group of an option file. (Options that
     are common to mysqld can also be specified in the [mysqld]
     group.) Other options are passed to mysqld. For information
     about option files, see Section, "Using Option
     Files".  mysql_install_db also supports the options for
     processing option files described at Section,
     "Command-Line Options that Affect Option-File Handling".

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     o   --basedir=path

         The path to the MySQL installation directory.

     o   --datadir=path, --ldata=path

         The path to the MySQL data directory.

     o   --force

         Cause mysql_install_db to run even if DNS does not work.
         Grant table entries that normally use host names will
         use IP addresses.

     o   --rpm

         For internal use. This option is used during the MySQL
         installation process for install operations performed
         using RPM packages.

     o   --skip-name-resolve

         Use IP addresses rather than host names when creating
         grant table entries. This option can be useful if your
         DNS does not work.

     o   --srcdir=path

         For internal use. This option specifies the directory
         under which mysql_install_db looks for support files
         such as the error message file and the file for
         populating the help tables.

     o   --user=user_name

         The system (login) user name to use for running mysqld.
         Files and directories created by mysqld will be owned by
         this user. You must be root to use this option. By
         default, mysqld runs using your current login name and
         files and directories that it creates will be owned by

     o   --verbose

         Verbose mode. Print more information about what the
         program does.

     o   --windows

         For internal use. This option is used for creating
         Windows distributions.

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