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Steps to upgrade a MySQL installation
Below are the steps mentioned to upgrade a MySQL installation −
Upgrade the paths
Prepare the installation for an upgrade
Upgrade the MySQL binary or package-based installation on Unix or Linux
MySQL can also be upgraded using MySQL yum repository or APT repository or SLES repository or on Windows.
The next step is to upgrade the docker installation of MySQL
Upgrade the troubleshooting
The tables or indexes have to be rebuilt or repaired.
The MySQL databases have to be copied to the other machine.
MySQL binary and package-based installations can be done on Unix or linux in many different ways. They have been mentioned below.
In−place upgrade
Logical upgrade
MySQL cluster upgrade
Let us understand each of the above mentioned methods in brief −
In-place Upgrade
An in-place upgrade involves shutting down the old MySQL server, replacing the old MySQL binaries or the packages with the new ones.
Once this is done, the MySQL server is restarted on the existing data directory.
After this, the remaining parts of the existing installation, that require some kind of upgrade, are upgraded.
Logical Upgrade
A logical upgrade involves exporting the SQL from old MySQL instance.
This is done with the help of a backup or export utility such as ‘mysqldump’ or ‘mysqlpump’.
The new MySQL server is installed by applying the SQL to the new MySQL instance.
MySQL Cluster Upgrade
The MGM nodes are upgraded.
The data nodes are upgraded one at a time.
The API nodes are upgraded one at a time, and this includes the MySQL servers.
The data dictionary is upgraded.
The system tables are upgraded.
The system is restarted.
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