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diff --git a/automation/ansible/README.md b/automation/ansible/README.md
index 1a6c651..0965062 100644
--- a/automation/ansible/README.md
+++ b/automation/ansible/README.md
@@ -38,3 +38,32 @@ ansible-playbook -i hosts [-l SUBSET] site.yaml
 1. Configure either SSH or WinRM connection: see https://docs.ansible.com/ansible/latest/os_guide/windows_setup.html
 2. For arm64 hosts:
   * Install the necessary optional features (eg. OpenSSH, Hyper-V) since Windows RSAT isn't available on Arm64 yet
+
+## CI 'rootnode'
+
+1. Add an entry to the `vms` variable in the host vars for a libvirt host
+  * See the defaults and details in `roles/libvirt/vars/main.yml` and `roles/libvirt/tasks/main.yml`
+  * Make sure to set the `cdrom` key to the path of ISO for the installer
+2. Run the playbook, eg. `ansible-playbook -i hosts -l cloud07.internal.efficios.com site.yml`
+  * The VM should be created and started
+3. Once the VM is installed take a snapshot so that Jenkins may revert to the original state
+
+### Ubuntu auto-installer
+
+1. Note your IP address
+2. Switch to the directory with the user-data files: `cd roles/libvirt/files`
+3. Write out the instance-specific metadata, eg.
+
+```
+cat > meta-data <<EOF
+instance-id: iid-XXX
+hostname: XXX.internal.efficios.com
+EOF
+```
+  * The instance-id is used to determine if re-installation is necessary.
+4. Start a python web server: `python3 -m http.server 3003`
+5. Connect to the VM using a remote viewer on the address given by `virsh --connect qemu+ssh://root@host/system domdisplay`
+6. Edit the grub boot options for the installer and append the following as arguments for the kernel: `autoinstall 'ds=nocloud-net;s=http://IPADDRESS:3003/'` and boot the installer
+  * Note that the trailing `/` and quoting are important
+  * The will load the `user-data`, `meta-data`, and `vendor-data` files in the directory served by the python web server
+7. After the installation is complete, the system will reboot and run cloud-init for the final portion of the initial setup. Once completed, ansible can be run against it using the ubuntu user and becoming root, eg. `ansible-playbook -i hosts -u ubuntu -b ...`