How do you migrate Amazon RDS from MySQL 5.1 to MySQL 5.5?

RDS supports MySQL 5.5 and offers a lot of automated feature such as scaling up, expanding disk space, and upgrading the minor version of the database (e.g., from 5.1.49 to 5.1.50). However, is there a way to upgrade 开发者_Python百科from 5.1.x to 5.5, either through the command line tools or the web GUI?

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Good news, everyone! Amazon RDS now supports point-and-click upgrade from MySQL 5.1 to 5.5

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The RDS FAQ says:

Currently, a direct upgrade from MySQL 5.1 to MySQL 5.5 is not supported.

so you'll have to do it the more traditional way.

For example a simplistic approach would be to start a 5.5 RDS instance and pipe the 5.1 database into it like this:

mysqldump -h mysql5.1.database.host database_name|mysql -h mysql5.5.database.host

then switch to using the 5.5 instance.

Of course, this would be slow for a large database and you will need to avoid writes to the source database during the transition.

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Migrating from 5.1 to 5.5 is now available via the AWS Management Console.

I don't know when it was added, but it must've changed recently.