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README.md
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README.md
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# vagrant-saltlab
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Using Vagrant to run a portable [Salt](https://saltproject.io/) lab environment [on my Chromebook](https://runtimeterror.dev/create-vms-chromebook-hashicorp-vagrant/). The included Vagrantfile spawns a environment with a single Salt Master (named `salt`) and four Salt Minions (named `minion##`) running a few different common Linux distributions for learning, testing, and development. It leverages the `libvirt` provider to interact with native Linux virtualization, and has a few tweaks to work around limitations imposed by running this all within ChromeOS's LXC-based [Linux development environment](https://support.google.com/chromebook/answer/9145439).
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Using [HashiCorp Vagrant](https://github.com/hashicorp/vagrant) to run a portable, redeployable [Salt](https://saltproject.io/) lab environment [on my Chromebook](https://runtimeterror.dev/create-vms-chromebook-hashicorp-vagrant/).
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The included Vagrantfile spawns a environment with a single Salt Master (named `salt`) and four Salt Minions (named `minion##`) running different common Linux distributions for learning, testing, and development. It leverages the [`libvirt` provider](https://github.com/vagrant-libvirt/vagrant-libvirt) to interact with native Linux virtualization, and has a few tweaks to work around limitations imposed by running this all within ChromeOS's LXC-based [Linux development environment](https://support.google.com/chromebook/answer/9145439).
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To make it easier to deploy, test, break, tear down, and redeploy the environment:
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1. The Salt master blindly auto-accepts all minion keys.
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2. The minions register the `roles:saltlab` grain to aid in targeting.
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3. The master uses `gitfs` to pull the Salt content from this very Github repo.
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4. Additionally, the contents of `salt_content/local` get `rsync`ed 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.
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- The Salt master blindly auto-accepts all minion keys.
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- The minions register the `roles:saltlab` grain to aid in targeting.
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- The master uses `gitfs` to pull the starter Salt content from this very Github repo.
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- Additionally, the contents of `salt_content/local` get `rsync`ed 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.
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## Preparation
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See [the blog post](https://runtimeterror.dev/create-vms-chromebook-hashicorp-vagrant/) for full details on how I've configured my environment.
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<details><summary>Here's the crash course:</summary>
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1. Verify support for nested virtualization:
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```shell
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ls -l /dev/kvm
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```
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2. Install prerequisites:
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```shell
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sudo apt update && sudo apt install \
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build-essential \
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gpg \
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lsb-release \
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rsync \
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wget
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```
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3. Install `virt-manager` and `libvirt-dev`:
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```shell
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sudo apt install virt-manager libvirt-dev
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```
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4. Configure libvirt:
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```shell
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sudo gpasswd -a $USER libvirt ; newgrp libvirt
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echo "remember_owner = 0" | sudo tee -a /etc/libvirt/qemu.conf
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echo "namespaces = []" | sudo tee -a /etc/libvirt/qemu.conf
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sudo systemctl restart libvirtd
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```
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5. Install Vagrant
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```shell
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wget -O- https://apt.releases.hashicorp.com/gpg | gpg --dearmor | sudo tee /usr/share/keyrings/hashicorp-archive-keyring.gpg
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echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
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sudo apt update
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sudo apt install vagrant
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```
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6. Install `vagrant-libvirt` plugin:
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```shell
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vagrant plugin install vagrant-libvirt
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```
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</details>
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## Usage
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Clone this repo:
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```shell
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git clone https://github.com/jbowdre/vagrant-saltlab.git
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cd vagrant-saltlab
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```
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Review the Vagrantfile, and adjust `CPU_COUNT` and `MEMORY_MB` if needed. Note that some of the machines won't function correctly with less than `1024` MB.
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```shell
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vim Vagrantfile
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```
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Provision the virtual environment:
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```shell
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vagrant up
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```
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The master and four minions will be deployed; this will take a few minutes. Once complete, you can verify status with `vagrant status`:
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The master and four minions will be deployed; this will take several minutes. Once complete, you can verify status with `vagrant status`:
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```shell
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; vagrant status
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vagrant status
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Current machine states:
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salt running (libvirt)
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minion01 running (libvirt)
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minion02 running (libvirt)
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minion03 running (libvirt)
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minion04 running (libvirt)
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salt running (libvirt) # master, ubuntu 22.04
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minion01 running (libvirt) # ubuntu 22.04
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minion02 running (libvirt) # ubuntu 20.04
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minion03 running (libvirt) # rocky 8
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minion04 running (libvirt) # rocky 9
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This environment represents multiple VMs. The VMs are all listed
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above with their current state. For more information about a specific
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Access an SSH shell on the master with `vagrant ssh salt`:
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```shell
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; vagrant ssh salt
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Welcome to Ubuntu 20.04.6 LTS (GNU/Linux 5.4.0-139-generic x86_64)
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vagrant ssh salt
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Welcome to Ubuntu 22.04.3 LTS (GNU/Linux 5.15.0-83-generic x86_64)
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* Documentation: https://help.ubuntu.com
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* Management: https://landscape.canonical.com
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* Support: https://ubuntu.com/advantage
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* Support: https://ubuntu.com/pro
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System information as of Tue Feb 6 04:28:02 PM UTC 2024
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System load: 0.072265625 Processes: 104
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Usage of /: 14.3% of 30.34GB Users logged in: 0
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Memory usage: 59% IPv4 address for eth0: 192.168.121.69
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Swap usage: 0% IPv4 address for eth1: 192.168.100.120
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This system is built by the Bento project by Chef Software
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More information can be found at https://github.com/chef/bento
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Last login: Tue Feb 6 14:37:44 2024 from 192.168.121.1
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vagrant@salt:~$
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```
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@ -76,10 +142,8 @@ And confirm that the local and remote content has been successfully merged into
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```shell
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vagrant@salt:~$ sudo salt-run fileserver.file_list
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- _reactor/sync_grains.sls # gitfs
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- acg/.gitkeep # local
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- acg/neofetch/init.sls # local
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- acg/neofetch/uninstall.sls # local
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- acg/top.sls # local
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- neofetch/init.sls # local
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- neofetch/uninstall.sls # local
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- top.sls # gitfs
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- users/init.sls # gitfs
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- vim/init.sls # gitfs
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@ -90,7 +154,12 @@ vagrant@salt:~$ sudo salt-run fileserver.file_list
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- webserver/uninstall.sls # gitfs
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```
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You can then apply a state like so:
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```shell
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vagrant@salt:~$ sudo salt '*' state.apply neofetch
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```
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Happy Salting!
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## Cleanup
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To blow it all away for a fresh start, just run `vagrant destroy -f`.
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To blow it all away for a fresh start, just run `vagrant destroy -f`. You can then re-do `vagrant up`.
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