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mk-slave-find.1p

NAME

mk-slave-find - Find and print replication hierarchy tree of MySQL slaves.

SYNOPSIS

    mk-slave-find --host master-host
 
 

DESCRIPTION

mk-slave-find connects to a MySQL replication master and finds its slaves. Currently the only thing it can do is print a tree-like view of the replication hierarchy.

The master host can be specified using one of two methods. The first method is to use the standard connection-related command line options: ``--defaults-file'', ``--password'', ``--host'', ``--port'', ``--socket'' or ``--user''.

The second method to specifiy the master host is a DSN. A DSN is a special syntax that can be either just a hostname (like "server.domain.com" or 1.2.3.4), or a "key=value,key=value" string. Keys are a single letter:

    KEY MEANING
    === =======
    h   Connect to host
    P   Port number to use for connection
    S   Socket file to use for connection
    u   User for login if not current user
    p   Password to use when connecting
    F   Only read default options from the given file
 
 

"mk-slave-find" reads all normal MySQL option files, such as ~/.my.cnf, so you may not need to specify username, password and other common options at all.

DOWNLOADING

You can download Maatkit from Google Code at <http://code.google.com/p/maatkit/>, or you can get any of the tools easily with a command like the following:

    wget http://www.maatkit.org/get/toolname
    or
    wget http://www.maatkit.org/trunk/toolname
 
 

Where "toolname" can be replaced with the name (or fragment of a name) of any of the Maatkit tools. Once downloaded, they're ready to run; no installation is needed. The first URL gets the latest released version of the tool, and the second gets the latest trunk code from Subversion.

OPTIONS

--ask-pass

Prompt for a password when connecting to MySQL.

--charset

short form: -A

Enables character set settings in Perl and MySQL. If the value is "utf8", sets Perl's binmode on STDOUT to utf8, passes the "mysql_enable_utf8" option to DBD::mysql, and runs "SET NAMES UTF8" after connecting to MySQL. Any other value sets binmode on STDOUT without the utf8 layer, and runs "SET NAMES" after connecting to MySQL.

--config

type: Array

Read this comma-separated list of config files; if specified, this must be the first option on the command line.

--database

short form: -D

Database to use.

--defaults-file

short form: -F; type: string

Only read mysql options from the given file.

You must give an absolute pathname.

--help

Show a brief help message and exit.

--host

short form: -h; type: string

Connect to host.

--password

short form: -p; type: string

Password to use when connecting.

--port

short form: -P; type: int

Port number to use for connection.

--recurse

Number of levels to recurse in the hierarchy. Default is infinite.

This works by examining the output of "SHOW PROCESSLIST", or "SHOW SLAVE HOSTS" if no slave connections are found.

--set-vars

Specify any variables you want to be set immediately after connecting to MySQL. These will be included in a "SET" command.

--socket

short form: -S; type: string

Socket file to use for connection.

--user

short form: -u; type: string

User for login if not current user.

--version

Output version information and exit.

SYSTEM REQUIREMENTS

You need Perl, DBI, DBD::mysql, and some core packages that ought to be installed in any reasonably new version of Perl.

EXIT STATUS

Successful exit status is 0. Any other value represents the exit status of the Perl process itself.

ENVIRONMENT

The environment variable "MKDEBUG" enables verbose debugging output in all of the Maatkit tools:

    MKDEBUG=1 mk-....
 
 

BUGS

Please use Google Code Issues and Groups to report bugs or request support: <http://code.google.com/p/maatkit/>.

Please include the complete command-line used to reproduce the problem you are seeing, the version of all MySQL servers involved, the complete output of the tool when run with ``--version'', and if possible, debugging output produced by running with the "MKDEBUG=1" environment variable.

COPYRIGHT, LICENSE AND WARRANTY

This program is copyright 2007-2009 Baron Schwartz. Feedback and improvements are welcome.

THIS PROGRAM IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2; OR the Perl Artistic License. On UNIX and similar systems, you can issue `man perlgpl' or `man perlartistic' to read these licenses.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

AUTHOR

Baron Schwartz

VERSION

This manual page documents Ver 1.0.6 Distrib 3519 $Revision: 3450 $.