Puppet 4 is out now. Puppet is a very useful configuration management system. To use such systems has many advantages like:
- reuse of configuratons(recipe)
- mass-deployment of configurations
- avoidance of mistakes because of automated configurations
This release of puppet has some interesting and a few challenging changes. In the past, a common puppet installation was a set of tools. Since puppet3 I use hiera to divide the puppet-code from the configuration-data, puppetdb to store and reuse facts and reports and mcollective for orchestration of all agents. In puppet4 most of those tools are combined and integrated in one package.
Puppet4 now comes with hiera, mcollective and puppet. All configurations are in one directory, so the configuration-path's changed. They splitted the configurations for puppet-code from the puppet-server configuration.
Apache isn't neccessary anymore, the puppetserver can handle all the connections by itself.
Because of this all-in-one-package, it's easier to avoid version quirks. If you install the same puppet-package on server and agents, you could be sure that this versions will work together well.
Puppet4 has some syntax changes. For example: hyphen(-) is not allowed anymore in classnames and the future parser is now default.
Hiera: it's still hard to find parse-errors in hiera
It's very strange, but it was quite hard for me to find the installation packages.
There are many changes in puppet4. I upgraded from puppet2 to puppet4 and therefor it was a lot of work to do. I think that puppetlabs did a great work and I like the idea of packaging all important tools. For me this is the right direction for puppet.