@arisan/streamer2/opskit/delete-old-images

#!/usr/bin/env bash
#
## Delete old images except the latest one

opskit_path="$(cd "$(dirname "${BASH_SOURCE[0]}")"; pwd -P)"
source ${opskit_path}/lib/common.sh

if [[ -z $1 ]]; then
  echo "Missing image family name"
  exit 1;
fi

family=$1
## Get the latest image from family
latest_image=$(gcloud compute images describe-from-family "${family}" --format='value(name)')
if [[ -z "${latest_image}" ]]; then
  echo "No ${family} image exists."
  exit 1;
fi

## Delete old images and skip latest one
echo "Attempting to delete all ${family} images except the latest one...."
images=$(gcloud compute images list --regexp=^${family}.* --format='value(name)')
if [ -z "${images}" ]; then
  echo "Old ${family} images not available"
  exit 1;
fi

images_to_delete=''
for old_image in ${images}; do
  if [[ "${old_image}" -ne "${latest_image}" ]]; then
    images_to_delete="${images_to_delete} ${old_image}"
  fi
  images
done

gcloud compute images delete "${images_to_delete}" --quiet