mariadb-hotcopy
mariadb-hotcopy
is a Perl script that was originally written and contributed by Tim Bunce. It uses FLUSH TABLES, LOCK TABLES, and cp or scp to make a database backup.
It is a fast way to make a backup of the database or single tables, but it can be run only on the same machine where the database directories are located. mariadb-hotcopy
works only for backing up MyISAM and ARCHIVE tables. It runs on Unix and NetWare.
To use mariadb-hotcopy
, you must have read access to the files for the tables that you are backing up, the SELECT
privilege for those tables, the RELOAD
privilege (to be able to execute FLUSH TABLES
), and the LOCK TABLES
privilege (to be able to lock the tables).
shell> mariadb-hotcopy db_name [/path/to/new_directory]
shell> mariadb-hotcopy db_name_1 ... db_name_n /path/to/new_directory
Back up tables in the given database that match a regular expression:
shell> mariadb-hotcopy db_name./regex/
The regular expression for the table name can be negated by prefixing it with a tilde (~
):
shell> mariadb-hotcopy db_name./~regex/
mariadb-hotcopy
supports the following options, which can be specified on the command line or in the [mariadb-hotcopy
] and [client
] option file groups.
--help
, -?
--help
, -?
Display a help message and exit.
--addtodest
--addtodest
Do not rename target directory (if it exists); merely add files to it.
--allowold
--allowold
Do not abort if a target exists; rename it by adding an _old suffix.
--checkpoint
=db_name.tbl_name
--checkpoint
=db_name.tbl_nameInsert checkpoint entries into the specified database db_name and table tbl_name.
--chroot
=directory
--chroot
=directoryBase directory of the chroot jail in which mariadbd operates. The path value should match that of the
--chroot
option given to mariadbd
.
--debug
--debug
Enable debug output.
--dryrun
, -n
--dryrun
, -n
Report actions without performing them.
--flushlog
--flushlog
Flush logs after all tables are locked.
--host
=host_name, -h
host_name
--host
=host_name, -h
host_nameThe host name of the local host to use for making a TCP/IP connection to the local server. By default, the connection is made to localhost using a Unix socket file.
--keepold
--keepold
Do not delete previous (renamed) target when done.
--method
=method
--method
=methodThe method for copying files (cp
or scp
). The default is cp
.
--noindices
--noindices
Do not include full index files for MyISAM tables in the backup. This makes the backup smaller and faster. The indexes for reloaded tables can be reconstructed later with myisamchk -rq.
--old-server
--old-server
Connect to old MySQL server (before MySQL 5.5) which doesn't have FLUSH TABLES WITH READ LOCK fully implemented.
--password
=password, -p
password
--password
=password, -p
passwordThe password to use when connecting to the server. The password value is mandatory for this option, unlike for other MariaDB programs. Specifying a password on the command line should be considered insecure. You can use an option file to avoid giving the password on the command line.
--port
=port-number, -P
port-number
--port
=port-number, -P
port-numberThe TCP/IP port number to use when connecting to the local server.
--quiet
, -q
--quiet
, -q
Be silent except for errors.
--record\_log\_pos
=db_name.tbl_name
--record\_log\_pos
=db_name.tbl_nameRecord master and slave status in the specified database db_name and table tbl_name.
--regexp
=expression
--regexp
=expressionCopy all databases with names that match the given regular expression.
--resetmaster
--resetmaster
Reset the binary log after locking all the tables.
--resetslave
--resetslave
Reset the master.info
file after locking all the tables.
--socket
=socket-file, -S
socket-file
--socket
=socket-file, -S
socket-fileThe Unix socket file to use for connections to localhost.
--suffix
=string
--suffix
=stringThe suffix string to use for names of copied databases.
--tmpdir
=directory
--tmpdir
=directoryThe temporary directory. The default is /tmp
.
--user
=username, -u
username
--user
=username, -u
usernameThe MariaDB username to use when connecting to the server.
Use perldoc for additional mariadb-hotcopy
documentation, including information about the structure of the tables needed for the--checkpoint
and ``--record_log_pos
options:
shell> perldoc mariadb-hotcopy
See Also
This page is licensed: CC BY-SA / Gnu FDL
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