NAME

       mysqld - the MySQL server

SYNOPSIS

       mysqld [options]

DESCRIPTION

       mysqld, also known as MySQL Server, is a single multithreaded program that does most of the work in a
       MySQL installation. It does not spawn additional processes. 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 7.9.1.2, “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:

           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 7.1, “The MySQL Server”. For information about installing MySQL and setting up the initial
       configuration, see Chapter 2, Installing MySQL.

COPYRIGHT

       Copyright © 1997, 2025, Oracle and/or its affiliates.

       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 8.0                                          06/13/2025                                          MYSQLD(8)