mysqld(8) [debian man page]

MYSQLD(8)						       MySQL Database System							 MYSQLD(8)

NAME

       mysqld - the MySQL server

SYNOPSIS

       mysqld [options]

DESCRIPTION

       mysqld, also known as MySQL Server, is the main program that does most of the work in a MySQL installation. MySQL Server manages access to
       the MySQL data directory that contains databases and tables. The data directory is also the default location for other information such as
       log files and status files.

	   Note
	   Some installation packages contain a debugging version of the server named mysqld-debug. Invoke this version instead of mysqld for
	   debugging support, memory allocation checking, and trace file support (see Section 28.5.1.2, "Creating Trace Files").

       When MySQL server starts, it listens for network connections from client programs and manages access to databases on behalf of those
       clients.

       The mysqld program has many options that can be specified at startup. For a complete list of options, run this command:

	   shell> mysqld --verbose --help

       MySQL Server also has a set of system variables that affect its operation as it runs. System variables can be set at server startup, and
       many of them can be changed at runtime to effect dynamic server reconfiguration. MySQL Server also has a set of status variables that
       provide information about its operation. You can monitor these status variables to access runtime performance characteristics.

       For a full description of MySQL Server command options, system variables, and status variables, see Section 5.1, "The MySQL Server". For
       information about installing MySQL and setting up the initial configuration, see Chapter 2, Installing and Upgrading MySQL.

COPYRIGHT

       Copyright (C) 1997, 2018, 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 5.7							    06/07/2018								 MYSQLD(8)

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.
       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".

       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 you.

       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.

COPYRIGHT

       Copyright (C) 1997, 2014, 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()