aegir

If you encounter,

when trying to back up a site using Aegir, then this is because there are some permission issues with some of the files in the sites directory.

In my case, these files were in the private/temp/ directory. Listing all offending files can be done by the following command:

Installing Aegir 2 on a fresh install of Ubuntu Saucy in a Virtualbox, I ran into the following message:

To fix this run, sudo mysql_secure_installation and ensure that you remove anonymous users. This should do the trick.