Build Your Own Atomic Host
Automation of Building your own Atomic-Host. To know about Atomic-Host, please visit http://www.projectatomic.io.
Steps
Clone Source
$ git clone https://github.com/trishnaguha/build-atomic-host.git
$ cd build-atomic-host
Install Ansible
Please Make sure Ansible is intalled in your system.
$ sudo dnf install ansible # Install python2-dnf if you are using Fedora Linux Distribution
Download Atomic QCOW2 Image
Download Fedora Atomic QCOW2 Image: https://getfedora.org/en/atomic. You can also download CentOS Atomic QCOW2 Image.
SetUp Environment
Install Requirements - Start HTTP Server. After running the following playbook you may use ip addr to check the IP Address of your HTTP server.
$ ansible-playbook setup.yml --ask-sudo-pass
Variables
Replace the Variables in vars/atomic.yml with your httpserver IP Address, OSTree name, Basehost.
If you wish to use CentOS Atomic modify the variables accordingly.
---
# Variables for Atomic host
atomicname: my-atomic
basehost: fedora-atomic/25/x86_64/docker-host
httpserver: 192.168.122.1
Add the additional Packages you would like to have in the OSTree in vars/buildrepo.yml.
If you wish to use CentOS Atomic modify the variables accordingly.
---
# Variables for Atomic repository/OSTree packages
repo: https://pagure.io/fedora-atomic.git
branch: f25
repodir: fedora-atomic
abs_path: /workspace # The absolute path to the git repo.
custommanifest: customized-atomic-docker-host.json # The manifest that goes into the custom host(ostree) content that we are going to build.
sourcemanifest: fedora-atomic-docker-host.json # The manifest that goes into the actual Base Fedora host(ostree) content.
packages: '"vim-enhanced", "git"' # Packages you want to have in your Atomic host.
You can add packages like above in double-qoutes separated by comma.
Replace Variables for Creating VM from QCOW2 Image. If you wish to use CentOS Atomic modify the variables accordingly.
# Variables for Creating VM
domain: atomic-node
image: Fedora-Atomic-25-20170228.0.x86_64
cpu: 1
mem: 1536
os:
variant: fedora23
path: /tmp
Main Playbook
Run the main Playbook which will create VM from QCOW2 image, compose OSTree and perform SSH-Setup and Rebase on OSTree:
$ ansible-playbook main.yml --ask-sudo-pass
user-name: atomic-user, password: atomic for the instance.
Reboot the Host
Now SSH to the Atomic Host and Perform a Reboot which will reboot in to your OSTree:
$ sudo systemctl reboot
Verify: SSH to the Atomic Host:
$ ssh [email protected]
[atomic-user@atomic-node ~]$ sudo rpm-ostree status
State: idle
Deployments:
● my-atomic:fedora-atomic/25/x86_64/docker-host
Version: 25.1 (2017-02-07 05:34:46)
Commit: 15b70198b8ec7fd54271f9672578544ff03d1f61df8d7f0fa262ff7519438eb6
OSName: fedora-atomic
fedora-atomic:fedora-atomic/25/x86_64/docker-host
Version: 25.51 (2017-01-30 20:09:59)
Commit: f294635a1dc62d9ae52151a5fa897085cac8eaa601c52e9a4bc376e9ecee11dd
OSName: fedora-atomic
Shout-Out for the following folks:
- Gerard Braad who mentored me for the project.
- Jonathan Lebon who demonstrated Building Atomic host workshop in DevConf.CZ, 2017 at Brno. His slides are here: jlebon-devconf-slides.