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Juan Garcia
Asked: 2015-08-13 12:00:50 +0800 CST

Puppet - Automatic provisioning with Vagrant VMs

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I have three virtual machine that I have created using Vagrant. This virtual machine have as box ubuntu/trusty64. I have created all VMs in the same Vagrantfile as single project. To provision it, I have used Puppet. For now, the three vms use different manifests. I want to automate this process, when the manifests change. So, if I add one package to one manifest I want that without my intervention, vagrant detect that and re-provision VMs according with new changes in manifests files.

I'm very newbie in Vagrant and more in Puppet, for that, my question is:

¿is that possible?

This is the project that I am developing: https://github.com/jngd/puppet-tfg

puppet

2 Answers

  1. Best Answer

    Vagrant itself isn't going to be able to do this. What you'll need is something like guard to watch the manifests and do "something" when they change. I wouldn't recommend completely reprovisioning the VM (vagrant destroy; vagrant up) on every change, because that way lies madness (it'll take a lot longer to run that it'll take you to make more edits), but running vagrant ssh sudo puppet apply /etc/puppet is certainly feasible.

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  2. I am not a Puppet user, but a CFEngine veteran. I did see that Puppet has an agent - puppet-agent that (can) periodically pull updated manifests from the Puppet master much like cf-agent/cf-execd does with promise bundles in CFE.

    I'd say that if you configure puppet-agent to run every 10 minutes or so, it should pull down the latest changes and run, updating your VMs. I don't know how Puppet handles packages (RPM? deb?) management, but I'm sure that if your manifest says to install a list of packages, adding one to the list should invoke a package install, along with all the other provisioning directives - copy files, manage services, etc.

    I'm guessing you could run puppet-agent as a daemon, or as a cron job.

    The catch is - you have to be able to reach your Puppet master from the Vagrant systems, so they will not update unless you're connected to your VPN/network and can reach the master.

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