added sample packer template to call a playbook on ...

... an existing qcow2 image.

2 files changed, 31 insertions, 0 deletions

diff --git a/README.md b/README.md
index ede4cdc..a4a42ff 100644
--- a/README.md
+++ b/README.md
@@ -20,3 +20,9 @@ Depends on *setup-dev-tools* role (see dracut-initramfs-builder/meta/main.yml).
 
 ## Usage
 Use the provided 'build-dracut-initramfs.yml' playbook for the ansible provisioner in your packer template.
+You can use an already created qcow2 image, instead of always generating new packer images. See *run-playbook-only.json*
+for a sample packer template to use an existing qcow2 image and provision them with our playbook.
+The template requires the variable 'image_path' to be set, which needs to be the path of the qcow2 image.
+If it was generated by packer and the manifest was created, you can simply extract the image path from that:
+	packer build -var-file=base.json -only=qemu -var='image_path='"$(jq -r '.builds[0].files[0].name' < manifest.json)"'' test.json
+
diff --git a/run-playbook-only.json b/run-playbook-only.json
new file mode 100644
index 0000000..bc551a3
--- /dev/null
+++ b/run-playbook-only.json
@@ -0,0 +1,25 @@
+{
+  "builders": [{
+    "type": "qemu",
+    "iso_url": "{{ user `image_path` }}",
+    "iso_checksum_type": "none",
+    "output_directory": "output-{{ timestamp }}",
+    "vm_name": "packer-{{ build_name }}",
+    "disk_image": "true",
+    "format": "qcow2",
+    "headless": "{{ user `headless` }}",
+    "ssh_timeout": "{{ user `ssh_timeout` }}",
+    "ssh_username": "{{ user `ssh_username` }}",
+    "ssh_password": "{{ user `ssh_password` }}",
+    "shutdown_command": "systemctl poweroff",
+    "qemuargs": [
+      ["-m", "{{ user `memory` }}"],
+      ["-smp", "{{ user `cpus` }}"]
+    ]
+  }],
+  "provisioners": [{
+    "type": "ansible",
+    "playbook_file": "build-dracut-initramfs.yml",
+    "extra_arguments": [ "-vvv" ]
+  }]
+}