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MYSQL_INSTALL_DB()                                          MYSQL_INSTALL_DB()



NAME
       mysql_install_db - initialize MySQL data directory

SYNOPSIS
       mysql_install_db [options]

DESCRIPTION
       mysql_install_db initializes the MySQL data directory and creates the system tables that it contains, if they
       do not exist. It also initializes the system tablespace and related data structures needed to manage InnoDB
       tables. As of MySQL 5.6.8, mysql_install_db is a Perl script and can be used on any system with Perl installed.
       Before 5.6.8, it is a shell script and is available only on Unix platforms.

       As of MySQL 5.6.8, on Unix platforms, mysql_install_db creates a default option file named my.cnf in the base
       installation directory. This file is created from a template included in the distribution package named
       my-default.cnf. You can find the template in or under the base installation directory. When started using
       mysqld_safe, the server uses my.cnf file by default. If my.cnf already exists, mysql_install_db assumes it to
       be in use and writes a new file named my-new.cnf instead.

       With one exception, the settings in the default option file are commented and have no effect. The exception is
       that the file sets the sql_mode system variable to NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES. This setting
       produces a server configuration that results in errors rather than warnings for bad data in operations that
       modify transactional tables. See Section 5.1.7, "Server SQL Modes".

       To invoke mysql_install_db, use the following syntax:

           shell> mysql_install_db [options]

       Because the MySQL server, mysqld, must 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
       specify 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


           Note
           After mysql_install_db sets up the InnoDB system tablespace, changes to some tablespace characteristics
           require setting up a whole new instance. This includes the file name of the first file in the system
           tablespace and the number of undo logs. If you do not want to use the default values, make sure that the
           settings for the innodb_data_file_path and innodb_log_file_size configuration parameters are in place in
           the MySQL configuration file before running mysql_install_db. Also make sure to specify as necessary other
           parameters that affect the creation and location of InnoDB files, such as innodb_data_home_dir and
           innodb_log_group_home_dir.

           If those options are in your configuration file but that file is not in a location that MySQL reads by
           default, specify the file location using the --defaults-extra-file option when you run mysql_install_db.

           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 used by MySQL programs,
       see Section 4.2.6, "Using Option Files".

       ?   --help

           Display a help message and exit.

       ?   --basedir=dir_name

           The path to the MySQL installation directory.

       ?   --builddir=dir_name

           For use with --srcdir and out-of-source builds. Set this to the location of the directory where the built
           files reside.

       ?   --cross-bootstrap

           For internal use. This option is used for building system tables on one host intended for another.

       ?   --datadir=dir_name

           The path to the MySQL data directory. Beginning with MySQL 5.6.8, mysql_install_db is more strict about the
           option value. Only the last component of the path name is created if it does not exist; the parent
           directory must already exist or an error occurs.

       ?   --defaults-extra-file=file_name

           Read this option file after the global option file but (on Unix) before the user option file. If the file
           does not exist or is otherwise inaccessible, an error occurs.  file_name is interpreted relative to the
           current directory if given as a relative path name rather than a full path name.

       ?   --defaults-file=file_name

           Use only the given option file. If the file does not exist or is otherwise inaccessible, an error occurs.
           file_name is interpreted relative to the current directory if given as a relative path name rather than a
           full path name.

       ?   --force

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

       ?   --keep-my-cnf

           Tell mysql_install_db to preserve any existing my.cnf file and not create a new default my.cnf file. This
           option was added in MySQL 5.6.20.

       ?   --ldata=dir_name

           A synonym for --datadir.

       ?   --no-defaults

           Do not read any option files. If program startup fails due to reading unknown options from an option file,
           --no-defaults can be used to prevent them from being read.

       ?   --random-passwords

           On Unix platforms, this option provides for more secure MySQL installation. Invoking mysql_install_db with
           --random-passwords causes it to perform the following actions in addition to its normal operation:

           ?   The installation process creates a random password, assigns it to the initial MySQL root accounts, and
               sets the "password expired" flag for those accounts.

           ?   The initial random root password is written to the .mysql_secret file in the directory named by the
               HOME environment variable. Depending on operating system, using a command such as sudo may cause the
               value of HOME to refer to the home directory of the root system user.

               If .mysql_secret already exists, the new password information is appended to it. Each password entry
               includes a timestamp so that in the event of multiple install operations it is possible to determine
               the password associated with each one.

               .mysql_secret is created with mode 600 to be accessible only to the system user for whom it is created.

           ?   No anonymous-user MySQL accounts are created.

           As a result of these actions, it is necessary after installation to start the server, connect as root using
           the password written to the .mysql_secret file, and specify a new root password. Until this is done, root
           cannot do anything else. This must be done for each root account you intend to use. To change the password,
           you can use the SET PASSWORD statement (for example, with the mysql client). You can also use mysqladmin or
           mysql_secure_installation.

           New RPM install operations (not upgrades) invoke mysql_install_db with the --random-passwords option.
           (Install operations using RPMs for Unbreakable Linux Network are unaffected because they do not use
           mysql_install_db.)

           As of MySQL 5.6.9, new Solaris PKG install operations (not upgrades) invoke mysql_install_db with the
           --random-passwords option.

           For install operations using a binary .tar.gz distribution or a source distribution, you can invoke
           mysql_install_db with the --random-passwords option manually to make your MySQL installation more secure.
           This is recommended, particularly for sites with sensitive data.

           This option was added in MySQL 5.6.8.

       ?   --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=dir_name

           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 the system root user 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
       Copyright (C) 1997, 2016, Oracle and/or its affiliates. All rights reserved.

       This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU
       General Public License as published by the Free Software Foundation; version 2 of the License.

       This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
       the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
       for more details.

       You should have received a copy of the GNU General Public License along with the program; if not, write to the
       Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see
       http://www.gnu.org/licenses/.


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/).



                                                            MYSQL_INSTALL_DB()