Add Cloudinit support using iso image

app/helpers/proxmox_vm_cloudinit_helper.rb

@@ -41,4 +41,37 @@ def parse_server_cloudinit(args)
     end
     cloudinit_h
   end
+
+  def create_cloudinit_iso(vm_name, configs)
+    iso = File.join('/var/lib/vz/template/iso', "#{vm_name}_cloudinit.iso")
+    arguments = ["-output #{iso}", '-volid', 'cidata', '-joliet', '-rock']
+    ssh = Fog::SSH.new(URI.parse(fog_credentials[:proxmox_url]).host, fog_credentials[:proxmox_username].split('@')[0], { password: fog_credentials[:proxmox_password] })
+    wd = ssh.run([%({mktemp -d})]).first.stdout.chomp
+    configs.each do |config|
+      begin
+        ssh.run([%({echo "#{config[1]}" >> "#{wd}/#{config[0]}"})])
+      rescue ::Foreman::Exception => e
+        logger.warn("Error writing to the file #{config[0]}: #{e}")
+      end
+      arguments.append(File.join(wd, config[0]))
+    end
+    logger.warn("iso image generation args: #{arguments}")
+    raise Foreman::Exception.new(N_('ISO build failed')) unless ssh.run([%({genisoimage #{arguments.join(' ')}})])
+    ssh.run([%(rm -rf #{wd})])
+    iso
+  end
+
+  def parse_cloudinit_config(cloned_vm, args)
+    config_data = args.delete('user_data').split('#network-config').append("/ninstance-id: #{vm.name}")
+    configs = ['user-data', 'network-config', 'meta-data'].zip(config_data).to_h
+
+    iso = create_cloudinit_iso(cloned_vm.name, configs)
+    args.merge(attach_cloudinit_iso(cloned_vm.node_id, iso))
+  end
+
+  def attach_cloudinit_iso(node, iso)
+    storage = storages(node, 'iso')[0]
+    volume = storage.volumes.detect { |v| v.volid.include? File.basename(iso) }
+    { ide2: "#{volume.volid},media=cdrom" }
+  end
 end

app/models/foreman_fog_proxmox/proxmox_vm_commands.rb

@@ -42,6 +42,7 @@ def create_vm(args = {})
       remove_volume_keys(args)
       if image_id
         vm = clone_from_image(image_id, vmid)
+        args = parse_cloudinit_config(vm, args) if args[:user_data]
         vm.update(compute_clone_attributes(args, vm.container?, type))
         update_pool(vm, args[:pool]) if args[:pool]
       else