mysqld的man手册（mysql5.7手册）

mysqld的man手册

[root@hanyw-UpdateOpenssl mysql]# man mysqld

[root@hanyw-UpdateOpenssl mysql]# man mysqld | tee

MYSQLD(8) MySQL Database System MYSQLD(8)

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 5.9.1.2, “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 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, 2023, 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 06/02/2023 MYSQLD(8)