| mysqld(8) - phpMan
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 24.5.1.2, “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 © 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 5.5 02/25/2018 MYSQLD(8)
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