Currently I have mysql 5.5 installed localy.
How can I install and use mysql 5.1 server?
I also need to be able to go back to 5.5. at one point.
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Are you sure you want that? A 5.5 database will NOT be compatible with 5.1 so you will need to restart from scratch and manually fix you data dump... I would fix the problem that prevents you from using 5.5 ;)– RinzwindAug 27, 2014 at 9:30
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1 Answer
It will not downgrade with 5.5 config files.
apt-get purge mysql* -y
find / |grep -i mysql
And backup and remove all folders, then install mysql 5.1.
As for upgrading to 5.5, use apt-get upgrade.
Don't forget to DUMP all your databases (mysqldump or phpmyadmin)!
