Script to clean up Google Container Registry images pushed before a particular date
#!/bin/bash
# Copyright © 2017 Google Inc.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
IFS=$'\n\t'
set -eou pipefail
if [[ "$#" -ne 2 || "${1}" == '-h' || "${1}" == '--help' ]]; then
cat >&2 <<"EOF"
gcrgc.sh cleans up tagged or untagged images pushed before specified date
for a given repository (an image name without a tag/digest).
USAGE:
gcrgc.sh REPOSITORY DATE
EXAMPLE
gcrgc.sh gcr.io/ahmet/my-app 2017-04-01
would clean up everything under the gcr.io/ahmet/my-app repository
pushed before 2017-04-01.
EOF
exit 1
elif [[ "${#2}" -ne 10 ]]; then
echo "wrong DATE format; use YYYY-MM-DD." >&2
exit 1
fi
main(){
local C=0
IMAGE="${1}"
DATE="${2}"
for digest in $(gcloud container images list-tags ${IMAGE} --limit=999999 --sort-by=TIMESTAMP \
--filter="timestamp.datetime < '${DATE}'" --format='get(digest)'); do
(
set -x
gcloud container images delete -q --force-delete-tags "${IMAGE}@${digest}"
)
let C=C+1
done
echo "Deleted ${C} images in ${IMAGE}." >&2
}
main "${1}" "${2}"