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CNV demo playbooks and templates

Image uploading

The upload-images.yml playbook populates our MinIO instance with vm disk images. The playbook will:

  • Check if an image exists or not
  • Check if an image needs to be replaced because the source_url has changed
  • Download remote images to a local cache directory
  • Upload images from local cache to minio

The playbook relies on the minio client.

Templates

The Makefile will generate operating-system specific templates from vm-template.ytt.yml, which is a ytt template.

As of this writing, you will get templates for:

  • CentOS 8
  • Cirros
  • Fedora 32
  • RHEL 8.2
  • Ubuntu Focal (20.04)

For each operating system, you get a template that uses the default pod network, and a template that uses the "public" bridged network. The list of generated templates is:

  • centos-8-template-bridge.yml
  • centos-8-template-pod.yml
  • cirros-template-bridge.yml
  • cirros-template-pod.yml
  • fedora-32-template-bridge.yml
  • fedora-32-template-pod.yml
  • rhel-8-template-bridge.yml
  • rhel-8-template-pod.yml
  • ubuntu-focal-template-bridge.yml
  • ubuntu-focal-template-pod.yml

You can use oc process to render a template into a usable object definition, which you can then apply using oc apply:

oc process centos-8-template-pod.yml NAME=test1 SSH_KEY="$(cat ~/.ssh/id_rsa.pub)" |
oc apply -f-