Uninstalling Aegir
There is no formal method for uninstalling Aegir, but there is also no real mystery either since the system tries to keep itself together in one location, typically /var/aegir.
Below are the steps to completely remove all traces of Aegir from your server.
Obviously if you have any sites and platforms currently managed by Aegir, you would want to move them out of the /var/aegir area before you delete it! Ensure you have set up your sites and platforms elsewhere, with Apache vhost files etc in their typical locations, or at least out of harm's way before attempting this.
WARNING: Performing these steps will remove Aegir from your server and may result in loss of data. Use with caution.
Run these commands as a privileged user (such as root). We assume your Aegir installation resides in /var/aegir
Backup
Backup anything you need to keep from the /var/aegir/ directory
Remove /var/aegir
rm -rf /var/aegir
Remove the aegir user's crontab
crontab -r -u aegir
Delete the aegir user
userdel aegir
This will also remove the user from the www-data group.
Remove the user from sudoers
visudo
Remove the line that looks something like
aegir ALL=NOPASSWD: /usr/sbin/apache2ctl
Save and exit the file.
Drop the database(s) and db user(s)
There are no generic instructions for this, since every system differs. Essentially you can perform this within a MySQL shell
mysql -u root -p
Use the DROP DATABASE $databasename; syntax to drop databases.
To see a list of GRANTs that Aegir has made for your database users, you can use a command like the following
SELECT user, host FROM mysql.user;
You can use the DROP USER $user syntax to delete these users and their privileges, depending on your version of MySQL.
Consult the GRANT and DROP documentation from MySQL for more information.
Delete the symlink/include from Apache
Depending on your installation and OS this may vary.
Generally:
cd /etc/apache2/conf.d
rm aegir.conf
If your Include statements were contained in a global system httpd.conf file or similar, you will need to remove these lines manually.
Restart Apache when you have completed this.