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A Box of Salt

2024-02-06

Last year, I figured out how to use HashiCorp Vagrant to provision and manage virtual machines on a Chromebook. I used that for some lightweight tinkering and to learn a bit more about how to use Salt for configuration management in a safe and self-contained environment.

runtimeterror: Create Virtual Machines on a Chromebook with HashiCorp Vagrant

Salt in 10 Minutes

Well, I'm about to need to do a lot more Salt work, so last night I decided to refresh my Vagrant setup a bit. I switched to using some newer machine images ("boxes"), and made some tweaks to support the latest "onedir" Salt releases. Being able to quickly spin up/down a lab environment with minions running various Linux flavors is a huge help to my development process.

Salt Documentation: What is onedir?

$ vagrant status
Current machine states:

salt           running (libvirt)  # master, ubuntu 22.04
minion01       running (libvirt)  # ubuntu 22.04
minion02       running (libvirt)  # ubuntu 20.04
minion03       running (libvirt)  # rocky 8
minion04       running (libvirt)  # rocky 9

To make it easier to deploy, test, break, tear down, and redeploy the environment:

The Salt master blindly auto-accepts all minion keys.
The minions register the roles:saltlab grain to aid in targeting.
The master uses gitfs to pull the starter Salt content from this very Github repo.
Additionally, the contents of `salt_content/local` get rsynced to `/srv/` when the master starts up to make it easier to write/test Salt content locally. This is a one-way rsync from host to VM (and not the other way around), so make sure to write your Salt content on the host and use `vagrant rsync` to push changes into the VM.

The full details of this setup are in my GitHub:

vagrant-saltlab: A small Vagrant lab environment for learning Salt

Okay, back to work!

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