Yocto Developer VM

Ansible-managed Linux Developer VM for the Yocto Training / Workshop, based on https://github.com/Zuehlke/linux-developer-vm-with-ansible.

What's included?

Main tools

These are the main tools included in this developer VM:

Toolchain - basic toolchain with prerequisites for building yocto images
VSCode - a general purpose text editor
Picocom - terminal emulator for grabbing the serial connection output

Apart from the above, the following tools are used to set up and maintain this developer VM:

Ansible - for managing / installing this developer VM
Ansible-lint - to ensure best practices when adding more Ansible roles
TestInfra - for verifying that the developer VM is set up correctly

Usage

Obtaining and Starting the VM Image

Simply run vagrant up in order to bring up the Yocto Developer VM (might take a while), then log in with:

username: "user"
password: "user"

From then on just open a terminal and you will have all of the tools available (see "What's included?").

Labs and Exercises

You can find the lab materials here (note: they are also available via /vagrant/labs/content/ from within the VM:

the original lab contents (slides, exercises, lab material)
the lab notes I have taken during the workshop

NOTE: Training materials are created by Bootlin and shared under Creative Commons Attribution - Share Alike 3.0 licencse. The sources for the training materials can be found at https://github.com/bootlin/training-materials/

Updating the VM

You can run these commands from anywhere inside the developer VM:

update-vm - update the VM by applying the Ansible roles from the locally checked out repo at ~/vm-setup
update-vm --pull - same as above, but update repo before by pulling the latest changes
update-vm --verify-only - don't update the VM, only run the TestInfra tests
update-vm --provision-only - don't run the TestInfra tests, only update the vm

Further Usage Instructions

For general instructions, please refer to the README.md that is placed on the Desktop of the Developer VM:

roles/readme/files/README.md

Building and Packaging the VM

Prerequisites

You only need VMware Workstation / VirtualBox and Vagrant installed.

All other requirements, including Ansible will be installed inside the Vagrant VM during provisioning, i.e. you don't need them installed on your host machine.

Building

Bring up the developer VM:

$ vagrant up

This will take a while, as it will do quite a few things inside the VM:

set up a new user account using the setup-vm-user.sh script
update the VM using update-vm.sh script
1. installs Ansible from PyPi
2. runs the site.yml playbook to install the toolchain and configure the developer VM
3. checks the roles via ansible-lint to ensure best practices
4. verifies the configuration of the VM via TestInfra

Watch the vagrant output on the console for seeing progress. At the end you should see all tests passing:

...
    default: ============================= test session starts ==============================
    default: platform linux -- Python 3.8.2, pytest-5.4.1, py-1.8.1, pluggy-0.13.1 -- /usr/bin/python3
    default: cachedir: .pytest_cache
    default: rootdir: /home/user/vm-setup
    default: plugins: testinfra-5.0.0, spec-2.0.0
    default: collecting ...
    default: collected 8 items
    default:
    default: spec/test_ansible.py:
    default: ✓ Ansible is installed at version 2 9 6 [local]
    default: ✓ Ansible commands are found [local]
    default: ✓ Ansible version command reports version 2 9 6 [local]
    default:
    default: spec/test_ansible_lint.py:
    default: ✓ Ansible lint is installed at version 4 2 0 [local]
    default: ✓ Ansible lint command is found [local]
    default: ✓ Ansible lint version command reports version 4 2 0 [local]
    default:
    default: spec/test_testinfra.py:
    default: ✓ Testinfra is installed at version 5 0 0 [local]
    default: ✓ Pytest spec is installed at version 2 0 0 [local]
    default:
    default: ============================== 8 passed in 4.05s ===============================

If these are passing as expected, you can continue developing on the Ansible roles within this repo. Please don't forget to add a test for each new feature you add (see "Contributing")

Packaging

Whenever you feel like distributing a fat VM image rather than a Vagrantfile, you can package / export it as a VirtualBox image. This might be useful for distributing the initial version of the developer VM to your dev team, or simply for preserving checkpoint releases as a binary images.

Let's start from a clean state:

$ vagrant destroy -f
$ vagrant up

This will provision the VM as usual. Once the provisioning succeeded, we will do a few cleanup steps before packaging the VM.

First, unmount the /vagrant shared folder:

$ vagrant ssh -c "sudo umount /vagrant -f"

Then remove the vagrant user account:

$ vagrant ssh -c "sudo pkill -KILL -u vagrant"
$ vagrant ssh -c "sudo userdel -f -r vagrant"

Finally, shutdown the VM, remove the sharedfolder, and export the VM as an .ova file

For VirtualBox:

$ vagrant halt
$ VBoxManage sharedfolder remove "Yocto Developer VM" --name "vagrant"
$ VBoxManage modifyvm "Yocto Developer VM" --name "Yocto Developer VM v0.1.0"
$ VBoxManage export "Yocto Developer VM v0.1.0" --output "yocto-developer-vm-v0.1.0.ova" --options manifest,nomacs

For VMware:

$ vagrant halt
$ VMX_FILE=`cat .vagrant/machines/default/vmware_desktop/id`
$ ovftool --name="Yocto Developer VM v0.1.0" "$VMX_FILE" yocto-developer-vm-v0.1.0.ova

Don't forget to throw away the VM when you are done:

$ vagrant destroy -f

Contributing

Fork the repository on Github
Create a named feature branch (like feature/add-xyz)
Implement your changes, add tests
Commit and push
Submit a Pull Request via Github

tknerr/yocto-developer-vm