Linux Commands Examples

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mysql_install_db

initialize MySQL data directory

Synopsis

mysql_install_db [options]


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examples

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  unset TMPDIR




  mysql_install_db --verbose --user=`whoami` \




  --basedir="$(brew
  --prefix mysql)" \




  --datadir=/usr/local/var/mysql
  \
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  mysql_install_db --datadir=$PWD/mariadb
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  UNSET TMPDIR




  mysql_install_db --verbose --user=`whoami` --basedir="$(brew --prefix mysql)" --datadir=/usr/local/var/mysql --tmpdir=/tmp
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  sudo cp `pwd`/conf/my.cnf /etc/




  mysql_install_db --verbose --user=`whoami` --basedir="$(brew --prefix mysql)" --datadir=/usr/local/var/mysql --tmpdir=/tmp

description

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 installed.)

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 \
--datadir=/opt/mysql/mysql/data

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

Note
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 4.2.3.3, “Using Option Files”. mysql_install_db also supports the options for processing option files described at Section 4.2.3.4, “Command-Line Options that Affect Option-File Handling”.

• --basedir=path

The path to the MySQL installation directory.

• --datadir=path, --ldata=path

The path to the MySQL data directory.

• --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.

• --rpm

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

• --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.

• --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.

• --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 you.

• --verbose

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

• --windows

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

copyright

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mysql install db

[options]
see also

For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at http://dev.mysql.com/doc/.


author

Oracle Corporation (http://dev.mysql.com/).

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