Sweep of all sorts of things.

Thanks for this great ceph playbook, I just read through the code to understand what was happening here and removed some duplication and changed the syntax of the yml files a bit.

Would you guys appreciate contributions? Then please tell me what changes you like and I will create proper pull requests that can be discussed seriously.

Didn't mean to be rude!
we should add:

ignore_errors: true

because sometimes updatedb doesn't exist, we could also check his existence but I was lazy to do it in 2 times. Ignoring the errors is not really an issue.