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mysqladmin.1
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'\" t
.\" Title: mysqladmin
.\" Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\" Date: 10/11/2024
.\" Manual: MySQL Database System
.\" Source: MySQL 9.0
.\" Language: English
.\"
.TH "MYSQLADMIN" "1" "10/11/2024" "MySQL 9\&.0" "MySQL Database System"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
mysqladmin \- a MySQL server administration program
.SH "SYNOPSIS"
.HP \w'\fBmysqladmin\ [\fR\fB\fIoptions\fR\fR\fB]\ \fR\fB\fIcommand\fR\fR\fB\ [\fR\fB\fIcommand\-options\fR\fR\fB]\ [\fR\fB\fIcommand\fR\fR\fB\ [\fR\fB\fIcommand\-options\fR\fR\fB]]\ \&.\&.\&.\fR\ 'u
\fBmysqladmin [\fR\fB\fIoptions\fR\fR\fB] \fR\fB\fIcommand\fR\fR\fB [\fR\fB\fIcommand\-options\fR\fR\fB] [\fR\fB\fIcommand\fR\fR\fB [\fR\fB\fIcommand\-options\fR\fR\fB]] \&.\&.\&.\fR
.SH "DESCRIPTION"
.PP
\fBmysqladmin\fR
is a client for performing administrative operations\&. You can use it to check the server\*(Aqs configuration and current status, to create and drop databases, and more\&.
.PP
Invoke
\fBmysqladmin\fR
like this:
.sp
.if n \{\
.RS 4
.\}
.nf
mysqladmin [\fIoptions\fR] \fIcommand\fR [\fIcommand\-arg\fR] [\fIcommand\fR [\fIcommand\-arg\fR]] \&.\&.\&.
.fi
.if n \{\
.RE
.\}
.PP
\fBmysqladmin\fR
supports the following commands\&. Some of the commands take an argument following the command name\&.
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
create \fIdb_name\fR
.sp
Create a new database named
\fIdb_name\fR\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
debug
.sp
Tells the server to write debug information to the error log\&. The connected user must have the
SUPER
privilege\&. Format and content of this information is subject to change\&.
.sp
This includes information about the Event Scheduler\&. See
Section\ \&27.5.5, \(lqEvent Scheduler Status\(rq\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
drop \fIdb_name\fR
.sp
Delete the database named
\fIdb_name\fR
and all its tables\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
extended\-status
.sp
Display the server status variables and their values\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
flush\-hosts
.sp
Flush all information in the host cache\&. See
Section\ \&7.1.12.3, \(lqDNS Lookups and the Host Cache\(rq\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
flush\-logs [\fIlog_type\fR \&.\&.\&.]
.sp
Flush all logs\&.
.sp
The
\fBmysqladmin flush\-logs\fR
command permits optional log types to be given, to specify which logs to flush\&. Following the
flush\-logs
command, you can provide a space\-separated list of one or more of the following log types:
binary,
engine,
error,
general,
relay,
slow\&. These correspond to the log types that can be specified for the
FLUSH LOGS
SQL statement\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
flush\-privileges
.sp
Reload the grant tables (same as
reload)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
flush\-status
.sp
Clear status variables\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
flush\-tables
.sp
Flush all tables\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
kill \fIid\fR,\fIid\fR,\&.\&.\&.
.sp
Kill server threads\&. If multiple thread ID values are given, there must be no spaces in the list\&.
.sp
To kill threads belonging to other users, the connected user must have the
CONNECTION_ADMIN
privilege (or the deprecated
SUPER
privilege)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
password \fInew_password\fR
.sp
Set a new password\&. This changes the password to
\fInew_password\fR
for the account that you use with
\fBmysqladmin\fR
for connecting to the server\&. Thus, the next time you invoke
\fBmysqladmin\fR
(or any other client program) using the same account, you must specify the new password\&.
.if n \{\
.sp
.\}
.RS 4
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
.br
.ps +1
\fBWarning\fR
.ps -1
.br
Setting a password using
\fBmysqladmin\fR
should be considered
\fIinsecure\fR\&. On some systems, your password becomes visible to system status programs such as
\fBps\fR
that may be invoked by other users to display command lines\&. MySQL clients typically overwrite the command\-line password argument with zeros during their initialization sequence\&. However, there is still a brief interval during which the value is visible\&. Also, on some systems this overwriting strategy is ineffective and the password remains visible to
\fBps\fR\&. (SystemV Unix systems and perhaps others are subject to this problem\&.)
.sp .5v
.RE
If the
\fInew_password\fR
value contains spaces or other characters that are special to your command interpreter, you need to enclose it within quotation marks\&. On Windows, be sure to use double quotation marks rather than single quotation marks; single quotation marks are not stripped from the password, but rather are interpreted as part of the password\&. For example:
.sp
.if n \{\
.RS 4
.\}
.nf
mysqladmin password "my new password"
.fi
.if n \{\
.RE
.\}
.sp
The new password can be omitted following the
password
command\&. In this case,
\fBmysqladmin\fR
prompts for the password value, which enables you to avoid specifying the password on the command line\&. Omitting the password value should be done only if
password
is the final command on the
\fBmysqladmin\fR
command line\&. Otherwise, the next argument is taken as the password\&.
.if n \{\
.sp
.\}
.RS 4
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
.br
.ps +1
\fBCaution\fR
.ps -1
.br
Do not use this command used if the server was started with the
\fB\-\-skip\-grant\-tables\fR
option\&. No password change is applied\&. This is true even if you precede the
password
command with
flush\-privileges
on the same command line to re\-enable the grant tables because the flush operation occurs after you connect\&. However, you can use
\fBmysqladmin flush\-privileges\fR
to re\-enable the grant table and then use a separate
\fBmysqladmin password\fR
command to change the password\&.
.sp .5v
.RE
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
ping
.sp
Check whether the server is available\&. The return status from
\fBmysqladmin\fR
is 0 if the server is running, 1 if it is not\&. This is 0 even in case of an error such as
Access denied, because this means that the server is running but refused the connection, which is different from the server not running\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
processlist
.sp
Show a list of active server threads\&. This is like the output of the
SHOW PROCESSLIST
statement\&. If the
\fB\-\-verbose\fR
option is given, the output is like that of
SHOW FULL PROCESSLIST\&. (See
Section\ \&15.7.7.30, \(lqSHOW PROCESSLIST Statement\(rq\&.)
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
reload
.sp
Reload the grant tables\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
refresh
.sp
Flush all tables and close and open log files\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
shutdown
.sp
Stop the server\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
start\-replica
.sp
Start replication on a replica server\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
start\-slave
.sp
This is a deprecated alias for start\-replica\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
status
.sp
Display a short server status message\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
stop\-replica
.sp
Stop replication on a replica server\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
stop\-slave
.sp
This is a deprecated alias for stop\-replica\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
variables
.sp
Display the server system variables and their values\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
version
.sp
Display version information from the server\&.
.RE
.PP
All commands can be shortened to any unique prefix\&. For example:
.sp
.if n \{\
.RS 4
.\}
.nf
$> \fBmysqladmin proc stat\fR
+\-\-\-\-+\-\-\-\-\-\-\-+\-\-\-\-\-\-\-\-\-\-\-+\-\-\-\-+\-\-\-\-\-\-\-\-\-+\-\-\-\-\-\-+\-\-\-\-\-\-\-+\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-+
| Id | User | Host | db | Command | Time | State | Info |
+\-\-\-\-+\-\-\-\-\-\-\-+\-\-\-\-\-\-\-\-\-\-\-+\-\-\-\-+\-\-\-\-\-\-\-\-\-+\-\-\-\-\-\-+\-\-\-\-\-\-\-+\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-+
| 51 | jones | localhost | | Query | 0 | | show processlist |
+\-\-\-\-+\-\-\-\-\-\-\-+\-\-\-\-\-\-\-\-\-\-\-+\-\-\-\-+\-\-\-\-\-\-\-\-\-+\-\-\-\-\-\-+\-\-\-\-\-\-\-+\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-+
Uptime: 1473624 Threads: 1 Questions: 39487
Slow queries: 0 Opens: 541 Flush tables: 1
Open tables: 19 Queries per second avg: 0\&.0268
.fi
.if n \{\
.RE
.\}
.PP
The
\fBmysqladmin status\fR
command result displays the following values:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Uptime
.sp
The number of seconds the MySQL server has been running\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Threads
.sp
The number of active threads (clients)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Questions
.sp
The number of questions (queries) from clients since the server was started\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Slow queries
.sp
The number of queries that have taken more than
long_query_time
seconds\&. See
Section\ \&7.4.5, \(lqThe Slow Query Log\(rq\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Opens
.sp
The number of tables the server has opened\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Flush tables
.sp
The number of
flush\-*,
refresh, and
reload
commands the server has executed\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Open tables
.sp
The number of tables that currently are open\&.
.RE
.PP
If you execute
\fBmysqladmin shutdown\fR
when connecting to a local server using a Unix socket file,
\fBmysqladmin\fR
waits until the server\*(Aqs process ID file has been removed, to ensure that the server has stopped properly\&.
.PP
\fBmysqladmin\fR
supports the following options, which can be specified on the command line or in the
[mysqladmin]
and
[client]
groups of an option file\&. For information about option files used by MySQL programs, see
Section\ \&6.2.2.2, \(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,
\fB\-?\fR
.TS
allbox tab(:);
lB l.
T{
Command-Line Format
T}:T{
--help
T}
.TE
.sp 1
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\-\-bind\-address=\fR\fB\fIip_address\fR\fR
.TS
allbox tab(:);
lB l.
T{
Command-Line Format
T}:T{
--bind-address=ip_address
T}
.TE
.sp 1
On a computer having multiple network interfaces, use this option to select which interface to use for connecting to the MySQL server\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-character\-sets\-dir=\fR\fB\fIdir_name\fR\fR
.TS
allbox tab(:);
lB l
lB l
lB l.
T{
Command-Line Format
T}:T{
--character-sets-dir=path
T}
T{
Type
T}:T{
String
T}
T{
Default Value
T}:T{
[none]
T}
.TE
.sp 1
The directory where character sets are installed\&. See
Section\ \&12.15, \(lqCharacter Set Configuration\(rq\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-compress\fR,
\fB\-C\fR
.TS
allbox tab(:);
lB l
lB l
lB l
lB l.
T{
Command-Line Format
T}:T{
--compress[={OFF|ON}]
T}
T{
Deprecated
T}:T{
Yes
T}
T{
Type
T}:T{
Boolean
T}
T{
Default Value
T}:T{
OFF
T}
.TE
.sp 1
Compress all information sent between the client and the server if possible\&. See
Section\ \&6.2.8, \(lqConnection Compression Control\(rq\&.
.sp
This option is deprecated\&. Expect it to be removed in a future version of MySQL\&. See
the section called \(lqConfiguring Legacy Connection Compression\(rq\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-compression\-algorithms=\fR\fB\fIvalue\fR\fR
.TS
allbox tab(:);
lB l
lB l
lB l
lB l.
T{
Command-Line Format
T}:T{
--compression-algorithms=value
T}
T{
Type
T}:T{
Set
T}
T{
Default Value
T}:T{
uncompressed
T}
T{
Valid Values
T}:T{
.PP
zlib
.PP
zstd
.PP
uncompressed
T}
.TE
.sp 1
The permitted compression algorithms for connections to the server\&. The available algorithms are the same as for the
protocol_compression_algorithms
system variable\&. The default value is
uncompressed\&.
.sp
For more information, see
Section\ \&6.2.8, \(lqConnection Compression Control\(rq\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-connect\-timeout=\fR\fB\fIvalue\fR\fR
.TS
allbox tab(:);
lB l
lB l
lB l.
T{
Command-Line Format
T}:T{
--connect-timeout=value
T}
T{
Type
T}:T{
Numeric
T}
T{
Default Value
T}:T{
43200
T}
.TE
.sp 1
The maximum number of seconds before connection timeout\&. The default value is 43200 (12 hours)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-count=\fR\fB\fIN\fR\fR,
\fB\-c \fR\fB\fIN\fR\fR
.TS
allbox tab(:);
lB l.
T{
Command-Line Format
T}:T{
--count=#
T}
.TE
.sp 1
The number of iterations to make for repeated command execution if the
\fB\-\-sleep\fR
option is given\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-debug[=\fR\fB\fIdebug_options\fR\fR\fB]\fR,
\fB\-# [\fR\fB\fIdebug_options\fR\fR\fB]\fR
.TS
allbox tab(:);
lB l
lB l
lB l.
T{
Command-Line Format
T}:T{
--debug[=debug_options]
T}
T{
Type
T}:T{
String
T}
T{
Default Value
T}:T{
d:t:o,/tmp/mysqladmin.trace
T}
.TE
.sp 1
Write a debugging log\&. A typical
\fIdebug_options\fR
string is
d:t:o,\fIfile_name\fR\&. The default is
d:t:o,/tmp/mysqladmin\&.trace\&.
.sp
This option is available only if MySQL was built using
\fBWITH_DEBUG\fR\&. MySQL release binaries provided by Oracle are
\fInot\fR
built using this option\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-debug\-check\fR
.TS
allbox tab(:);
lB l
lB l
lB l.
T{
Command-Line Format
T}:T{
--debug-check
T}
T{
Type
T}:T{
Boolean
T}
T{
Default Value
T}:T{
FALSE
T}
.TE
.sp 1
Print some debugging information when the program exits\&.
.sp
This option is available only if MySQL was built using
\fBWITH_DEBUG\fR\&. MySQL release binaries provided by Oracle are
\fInot\fR
built using this option\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-debug\-info\fR
.TS
allbox tab(:);
lB l
lB l
lB l.
T{
Command-Line Format
T}:T{
--debug-info
T}
T{
Type
T}:T{
Boolean
T}
T{
Default Value
T}:T{
FALSE
T}
.TE
.sp 1
Print debugging information and memory and CPU usage statistics when the program exits\&.
.sp
This option is available only if MySQL was built using
\fBWITH_DEBUG\fR\&. MySQL release binaries provided by Oracle are
\fInot\fR
built using this option\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-default\-auth=\fR\fB\fIplugin\fR\fR
.TS
allbox tab(:);
lB l
lB l.
T{
Command-Line Format
T}:T{
--default-auth=plugin
T}
T{
Type
T}:T{
String
T}
.TE
.sp 1
A hint about which client\-side authentication plugin to use\&. See
Section\ \&8.2.17, \(lqPluggable Authentication\(rq\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-\-default\-character\-set=\fR\fB\fIcharset_name\fR\fR