'\" t
.\"     Title: \fBmysql_install_db\fR
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 02/25/2018
.\"    Manual: MySQL Database System
.\"    Source: MySQL 5.5
.\"  Language: English
.\"
.TH "\FBMYSQL_INSTALL_DB\FR" "1" "02/25/2018" "MySQL 5\&.5" "MySQL Database System"
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.SH "NAME"
mysql_install_db \- initialize MySQL data directory
.SH "SYNOPSIS"
.HP \w'\fBmysql_install_db\ [\fR\fB\fIoptions\fR\fR\fB]\fR\ 'u
\fBmysql_install_db [\fR\fB\fIoptions\fR\fR\fB]\fR
.SH "DESCRIPTION"
.PP
\fBmysql_install_db\fR
initializes the MySQL data directory and creates the system tables that it contains, if they do not exist\&.
\fBmysql_install_db\fR
is a shell script and is available only on Unix platforms\&. (As of MySQL 5\&.6,
\fBmysql_install_db\fR
is a Perl script and can be used on any system with Perl installed\&.)
.PP
To invoke
\fBmysql_install_db\fR, use the following syntax:
.sp
.if n \{\
.RS 4
.\}
.nf
shell> \fBmysql_install_db [\fR\fB\fIoptions\fR\fR\fB]\fR
.fi
.if n \{\
.RE
.\}
.PP
Because the MySQL server,
\fBmysqld\fR, must access the data directory when it runs later, you should either run
\fBmysql_install_db\fR
from the same system account that will be used for running
\fBmysqld\fR, or run it as
root
and specify the
\fB\-\-user\fR
option to indicate the user name that
\fBmysqld\fR
will run as\&. It might be necessary to specify other options such as
\fB\-\-basedir\fR
or
\fB\-\-datadir\fR
if
\fBmysql_install_db\fR
does not use the correct locations for the installation directory or data directory\&. For example:
.sp
.if n \{\
.RS 4
.\}
.nf
shell> \fBscripts/mysql_install_db \-\-user=mysql \e\fR
         \fB\-\-basedir=/opt/mysql/mysql \e\fR
         \fB\-\-datadir=/opt/mysql/mysql/data\fR
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.sp
.\}
.RS 4
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
.br
.ps +1
\fBNote\fR
.ps -1
.br
.PP
If you have set a custom
TMPDIR
environment variable when performing the installation, and the specified directory is not accessible,
\fBmysql_install_db\fR
may fail\&. If so, unset
TMPDIR
or set
TMPDIR
to point to the system temporary directory (usually
/tmp)\&.
.sp .5v
.RE
.PP
\fBmysql_install_db\fR
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
\fBmysqld\fR
can also be specified in the
[mysqld]
group\&.) Other options are passed to
\fBmysqld\fR\&. For information about option files used by MySQL programs, see
Section\ \&4.2.6, \(lqUsing Option Files\(rq\&.
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-help\fR
.sp
Display a help message and exit\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-basedir=\fR\fB\fIdir_name\fR\fR
.sp
The path to the MySQL installation directory\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-builddir=\fR\fB\fIdir_name\fR\fR
.sp
For use with
\fB\-\-srcdir\fR
and out\-of\-source builds\&. Set this to the location of the directory where the built files reside\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-cross\-bootstrap\fR
.sp
For internal use\&. This option is used for building system tables on one host intended for another\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-datadir=\fR\fB\fIdir_name\fR\fR
.sp
The path to the MySQL data directory\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-defaults\-extra\-file=\fR\fB\fIfile_name\fR\fR
.sp
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\&.
\fIfile_name\fR
is interpreted relative to the current directory if given as a relative path name rather than a full path name\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-defaults\-file=\fR\fB\fIfile_name\fR\fR
.sp
Use only the given option file\&. If the file does not exist or is otherwise inaccessible, an error occurs\&.
\fIfile_name\fR
is interpreted relative to the current directory if given as a relative path name rather than a full path name\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-force\fR
.sp
Cause
\fBmysql_install_db\fR
to run even if DNS does not work\&. Grant table entries normally created using host names will use IP addresses instead\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-ldata=\fR\fB\fIdir_name\fR\fR
.sp
A synonym for
\fB\-\-datadir\fR\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-no\-defaults\fR
.sp
Do not read any option files\&. If program startup fails due to reading unknown options from an option file,
\fB\-\-no\-defaults\fR
can be used to prevent them from being read\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-rpm\fR
.sp
For internal use\&. This option is used during the MySQL installation process for install operations performed using RPM packages\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-skip\-name\-resolve\fR
.sp
Use IP addresses rather than host names when creating grant table entries\&. This option can be useful if your DNS does not work\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-srcdir=\fR\fB\fIdir_name\fR\fR
.sp
For internal use\&. This option specifies the directory under which
\fBmysql_install_db\fR
looks for support files such as the error message file and the file for populating the help tables\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-user=\fR\fB\fIuser_name\fR\fR
.sp
The system (login) user name to use for running
\fBmysqld\fR\&. Files and directories created by
\fBmysqld\fR
will be owned by this user\&. You must be the system
root
user to use this option\&. By default,
\fBmysqld\fR
runs using your current login name and files and directories that it creates will be owned by you\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-verbose\fR
.sp
Verbose mode\&. Print more information about what the program does\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-windows\fR
.sp
For internal use\&. This option is used for creating Windows distributions\&.
.RE
.SH "COPYRIGHT"
.br
.PP
Copyright \(co 1997, 2018, Oracle and/or its affiliates. All rights reserved.
.PP
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.
.PP
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.
.PP
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/.
.sp
.SH "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/.
.SH AUTHOR
Oracle Corporation (http://dev.mysql.com/).