Mysql
Contents |
Features
- Based on Mysql 5.1.x branch
- Uses the design from Fedora, RHEL, and CentOS
Installation
To Upgrade to Mysql 5.1 on CentOS/RHEL/Fedora
Steps 3 and 4 only apply if you are upgrading from MySQL 5.0.x See version differences in following link http://dev.mysql.com/doc/refman/5.1/en/upgrading-from-previous-series.html
Step 1) Set up the atomic channel (See Getting_Started):
wget -q -O - http://www.atomicorp.com/installers/atomic | sh
Step 2) Upgrade to Mysql 5.1
yum upgrade mysql
Step 3) MySQL 5.1 removed the BERKLEY storage engine. Since it was not commonly used, to save resources it was recommended this be turned off. You must comment the following out or remove it from /etc/my.cnf or MySQL 5.1 will not start!
skip-bdb
Step 4) Update your MySQL tables
mysql_upgrade -u root -p
or for Plesk environments (and then the NOTE - this is the exact same login as the Plesk superuser e.g. use "-u admin" and then your admin password):
mysql_upgrade -u admin -p
Step 5) Restart mysql
/etc/init.d/mysqld restart
Support Packages
Mysqltuner, an excellent tool for investigating performance issues with mysql
yum install mysqltuner
Known Issues
Problems with MySQL databases and PLESK 9 after upgrade
If you get the following error after upgrading when you try to log into PLESK then you need to upgrade your database tables:
ERROR: PleskFatalException bad column in table: `backup_time` time NOT NULL default '00:00:00', [...]
Issue the following command from the shell:
mysqlcheck --check-upgrade --all-databases --auto-repair -u admin -pyouradminpassword
followed by:
cat /usr/share/mysql/mysql_fix_privilege_tables.sql | /usr/bin/mysql --no-defaults --force --user=admin --password=youradminpassword --host=localhost --database=mysql
This script updates all the mysql privilege tables to be usable by the current version of MySQL.
References:
[1] http://dev.mysql.com/doc/refman/5.0/en/mysql-upgrade.html
