<p><strong>This post is linked to from the <a href="/openstack.html">OpenStack Deep Dive Project</a></strong></p>
<hr>
<p>When you launch an instance in OpenStack, you can provide a script to
cloud-init that will be executed at startup time. The glance template needs to
have <a href="https://cloudinit.readthedocs.io/en/latest/">cloud-init</a> installed
(linux) or <a href="https://cloudbase.it/cloudbase-init/">Cloudbase-init</a> (windows).</p>
<h1 id="write-your-powershell-script">Write your Powershell Script</h1>
<p>You need to define the script ahead of time. Here's a super simple script
to add a local administrator:</p>
<pre><code class="language-powershell">#ps1
$name = "MyUser"
$password = "MyPassword"
$password_secure_string = ConvertTo-SecureString -AsPlainText -Force $password
$new_user = New-LocalUser -Name $name -Password $password_secure_string -AccountNeverExpires
Add-LocalGroupMember -Group "Administrators" -Member $new_user
</code></pre>
<hr>
<h1 id="create-the-instance">Create the Instance</h1>
<p>There's more than one way to do just about everything, but here's how I do it.</p>
<pre><code class="language-bash"># source openrc file
source my-openrc.sh

# Collect environment details
openstack flavor list
openstack network list
openstack image list

# Set the VM specs
flavor=""
network=""
image=""
name="CloudInitDemo"
size=60
vol_name="$name-boot"

# Create a boot volume
openstack volume create --image $image --bootable --size $size $vol_name

# create server and specify cloud-init script
script_file="/home/kyle/localAdmin.ps1"
openstack server create \
  --volume $vol_name \
  --flavor $flavor \
  --network $network \
  --user-data $script_file \
  $name
</code></pre>


Kyle Pericak

OpenStack Cloudbase-init: PowerShell user_data Scripts