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openstack-public-images

Scripts to publish public OS images for VSC Tier-1 Cloud infrastructure

Usage

To update the images, run ./update_images.sh. Run it with -y to skip confirmation prompts. See ./update_images.sh -h for more info.

You can edit the urls.json to change the default download URL template for each distro.

Custom image list

You can edit the images.json file to change which images are updated, or supply a custom file with -f myfile.json

The file has this format:

    {
      "distro": "fedora",
      "version_name": "cloud",
      "version_number": "40",
      "url":"https://download.fedoraproject.org/pub/fedora/linux/releases/40/Cloud/x86_64/images/Fedora-Cloud-Base-Generic.x86_64-40-1.14.qcow2"
    },

Notes:

  • url is optional if urls.json contains a template for distro
  • The script will fail for distros that aren't currently in urls.json unless you update update.generic.sh to support them

Cleaning up backups

The script will create backups of each image and deactivate them, unless it cannot find an existing image to back up.

You can clean these backups (or any deactivated images) with ./image_cleanup.sh.

How it works

./update_images will call ./update_generic.sh with the required environment variables in a loop, once per images.json entry.

It will then use known URL patterns for the various distros (see the download_iso function) to download the ISO.

It will then install python3-distro and chrony and configure it specific to the distro type.

Finally it will upload the new image and make a backup of the old one.

Components

  • update_images.sh: Wrapper and .json parser for update_generic.sh.
  • update_generic.sh: Script to update a single image based on env variables.
  • image_cleanup.sh: Script to cleanup deactivated openstack images.
  • common.sh: Library for common functions.