We’ve recently started using Puppet to provision our servers really seriously at work. All of our new servers are systematically provisioned using Puppet, and we now have a rule that nothing on servers can be changed by hand, every single bit needs to be managed by Puppet. Managing servers using Puppet is extremely useful and powerful, but you also need to know what you’re doing because a small untested change in your Puppet manifests could introduce instability (or worse! Read more...