Mysqldump certain tables Post: 302743073

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Top Forums UNIX for Dummies Questions & Answers Mysqldump certain tables Post 302743073 by timgolding on Wednesday 12th of December 2012 05:40:47 AM

12-12-2012

Registered User

Thanks, i wondered while i was in bed do i really need to create a smaller version of the database on the development server before i upload or would it be better to just dump remotely from the live server. i want the upload to be smooth to reduce any downtime when i do the upload. So i came up with this (ignore the drop database i will change it when i reverse engineer your script)

Code:

# I'll alter this once i understand your script.

mysqladmin -u root --password='mypassword' --socket=/tmp/mysql.sock drop DATABASE_TEMP
mysqladmin -u root --password='mypassword' --socket=/tmp/mysql.sock create DATABASE_TEMP

# Dump a smaller version of the database with compression

mysqldump -u MOVE1 --password='mypassword' -h '107.701.107.701' --opt --compress DATABASE TABLE1 TABLE2 TABLE3 | mysql --socket=/tmp/mysql.sock -u root --password='mypassword' DATABASE_TEMP
echo "temporary database successfully created"

# copy contents of temp database to the live version. Happens quickly and reduces downtime
for table in TABLE1 TABLE2 TABLE3
do
echo "moving data from $table"
mysql --socket=/tmp/mysql.sock -u root --password='mypassword' <<QUERY_INPUT
use DATABASE;
TRUNCATE TABLE $table;
INSERT INTO DATABASE.$table SELECT * FROM DATABASE_TEMP.$table;
QUERY_INPUT
done

If you see i added the tables to the dump like suggested. I will try to remove the dropping database from root now

---------- Post updated at 02:40 AM ---------- Previous update was at 01:33 AM ----------

Ok i get what your script does and have altered my script to drop the tables i want to drop rather than using show tables and dropping them all

Code:

tbl_names='TABLE1 TABLE2 TABLE3 TABLE4 TABLE5'

echo "dropping tables from temp database"
for table in $tbl_names
do
mysql --socket=/tmp/mysql.sock -u LOCAL_DROP --password='mypassword' <<QUERY_INPUT
use DATABASE_TEMP;
DROP TABLE $table;
QUERY_INPUT
done

mysqldump -u MOVE1 --password='mypassword' -h '107.701.107.701' --opt --compress DATABASE $tbl_names | mysql --socket=/tmp/mysql.sock -u root --password='mypassword' DATABASE_TEMP
echo "temporary database successfully created"

# copy contents of temp database to the live version. Happens quickly and reduces downtime
for table in $tbl_names
do
echo "moving data from $table"
mysql --socket=/tmp/mysql.sock -u root --password='mypassword' <<QUERY_INPUT
use DATABASE;
TRUNCATE TABLE $table;
INSERT INTO DATABASE.$table SELECT * FROM DATABASE_TEMP.$table;
QUERY_INPUT
done

Does that seem alright?

Last edited by timgolding; 12-12-2012 at 05:48 AM..

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mysql_fix_privilege_tables

MYSQL_FIX_PRIVILE(1)					       MySQL Database System					      MYSQL_FIX_PRIVILE(1)

NAME

       mysql_fix_privilege_tables - upgrade MySQL system tables

SYNOPSIS

       mysql_fix_privilege_tables --password=root_password

DESCRIPTION

	   Note
	   In MySQL 5.1.7, mysql_fix_privilege_tables was superseded by mysql_upgrade, which should be used instead. See mysql_upgrade(1).

       Some releases of MySQL introduce changes to the structure of the system tables in the mysql database to add new privileges or support new
       features. When you update to a new version of MySQL, you should update your system tables as well to make sure that their structure is up
       to date. Otherwise, there might be capabilities that you cannot take advantage of.

       mysql_fix_privilege_tables is an older script that previously was used to uprade the system tables in the mysql database after a MySQL
       upgrade.

       Before running mysql_fix_privilege_tables, make a backup of your mysql database.

       On Unix or Unix-like systems, update the system tables by running the mysql_fix_privilege_tables script:

	   shell> mysql_fix_privilege_tables

       You must run this script while the server is running. It attempts to connect to the server running on the local host as root. If your root
       account requires a password, indicate the password on the command line like this:

	   shell> mysql_fix_privilege_tables --password=root_password

       The mysql_fix_privilege_tables script performs any actions necessary to convert your system tables to the current format. You might see
       some Duplicate column name warnings as it runs; you can ignore them.

       After running the script, stop the server and restart it so that any changes made to the system tables take effect.

       On Windows systems, MySQL distributions include a mysql_fix_privilege_tables.sql SQL script that you can run using the mysql client. For
       example, if your MySQL installation is located at C:Program FilesMySQLMySQL Server 5.1, the commands look like this:

	   C:> cd "C:Program FilesMySQLMySQL Server 5.1"
	   C:> binmysql -u root -p mysql
	   mysql> SOURCE share/mysql_fix_privilege_tables.sql

	   Note
	   Prior to version 5.1.17, the mysql_fix_privilege_tables.sql script is found in the scripts directory.

       The mysql command will prompt you for the root password; enter it when prompted.

       If your installation is located in some other directory, adjust the path names appropriately.

       As with the Unix procedure, you might see some Duplicate column name warnings as mysql processes the statements in the
       mysql_fix_privilege_tables.sql script; you can ignore them.

       After running the script, stop the server and restart it.

COPYRIGHT

       Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc.

       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.

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       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,
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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

       Sun Microsystems, Inc. (http://www.mysql.com/).

MySQL 5.1							    04/06/2010						      MYSQL_FIX_PRIVILE(1)