NAME

       mydumper - multi-threaded MySQL dumping

SYNOPSIS

       mydumper [OPTIONS]

DESCRIPTION

       mydumper  is  a  tool  used  for  backing  up  MySQL database servers much faster than the
       mysqldump tool distributed with MySQL.  It also has the capability to retrieve the  binary
       logs  from  the  remote  server  at  the  same time as the dump itself.  The advantages of
       mydumper are:

          • Parallelism (hence, speed) and performance (avoids expensive character set conversion
            routines, efficient code overall)

          • Easier  to  manage  output  (separate  files  for tables, dump metadata, etc, easy to
            view/parse data)

          • Consistency - maintains snapshot across all threads,  provides  accurate  master  and
            slave log positions, etc

          • Manageability  -  supports  PCRE  for  specifying  database and tables inclusions and
            exclusions

OPTIONS

       The mydumper tool has several available options:

       --help, -?
              Show help text

       --host, -h
              Hostname of MySQL server to connect to (default localhost)

       --user, -u
              MySQL username with the correct privileges to execute the dump

       --password, -p
              The corresponding password for the MySQL user

       --port, -P
              The port for the MySQL connection.

              NOTE:
                 For localhost TCP connections use 127.0.0.1 for --host.

       --socket, -S
              The UNIX domain socket file to use for the connection

       --database, -B
              Database to dump

       --tables-list, -T
              A comma separated list of tables to dump

       --threads, -t
              The number of threads to use for dumping data, default is 4

              NOTE:
                 Other threads are used in mydumper, this option does not control these

       --outputdir, -o
              Output directory name, default is export-YYYYMMDD-HHMMSS

       --statement-size, -s
              The maximum size for an insert statement before  breaking  into  a  new  statement,
              default 1,000,000 bytes

       --rows, -r
              Split table into chunks of this many rows, default unlimited

       --compress, -c
              Compress the output files

       --compress-input, -C
              Use client protocol compression for connections to the MySQL server

       --build-empty-files, -e
              Create empty dump files if there is no data to dump

       --regex, -x
              A regular expression to match against database and table

       --ignore-engines, -i
              Comma separated list of storage engines to ignore

       --no-schemas, -m
              Do not dump schemas with the data

       --no-data, -d
              Do not dump table data

       --triggers, -G
              Dump triggers

       --events, -E
              Dump events

       --routines, -R
              Dump stored procedures and functions

       --long-query-guard, -l
              Timeout for long query execution in seconds, default 60

       --kill-long-queries, -K
              Kill long running queries instead of aborting the dump

       --version, -V
              Show the program version and exit

       --verbose, -v
              The  verbosity  of  messages.   0  =  silent,  1  = errors, 2 = warnings, 3 = info.
              Default is 2.

       --binlogs, -b
              Get the binlogs from the server as well as the dump files (You need to compile with
              -DWITH_BINLOG=ON)

       --daemon, -D
              Enable daemon mode

       --snapshot-interval, -I
              Interval  between  each  dump  snapshot (in minutes), requires --daemon, default 60
              (minutes)

       --logfile, -L
              A file to log mydumper output to instead of  console  output.   Useful  for  daemon
              mode.

       --no-locks, -k
              Do not execute the temporary shared read lock.

              WARNING:
                 This will cause inconsistent backups.

       --[skip-]tz-utc
              SET  TIME_ZONE='+00:00'  at  top  of dump to allow dumping of TIMESTAMP data when a
              server has data in different time zones or data is being moved between servers with
              different time zones, defaults to on use --skip-tz-utc to disable.

       --less-locking
              Minimize  locking  time  on  InnoDB  tables  grabbing  a LOCK TABLE ... READ on all
              non-innodb tables.

       --chunk-filesize -F
              Split tables into chunks of this output file size. This value is in MB

       --success-on-1146
              Not increment error count and Warning instead of Critical in case of table  doesn't
              exist

       --use-savepoints
              Use savepoints to reduce metadata locking issues, needs SUPER privilege

AUTHOR

       Andrew Hutchings

COPYRIGHT

       2011, Andrew Hutchings