Ubuntu Servers :: Rsnapshot And Postgresql - Permission ?

I have a server with a postgres database, apache and a custom java application.

I am trying to run rsnapshot to backup /home /etc and /var folders.

But I am running into issues with rsnapshot and permissions. More specifically these kind of errors,

Code:

I look at the permissions on these files with ls -la, I get

Code:

The owner of the files is root and postgres users. I am using passwordless login to connect to server as user XYZ. XYZ has root access to the server and to the database.

These files are all over the place. Some in /etc and some in /var/lib for instance. How can I best copy these remaining files.