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Cleanup outdated ECR images
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#!/bin/bash | |
set -o pipefail # the exit status of the last failed command gets returned | |
set -o nounset # exit when using undeclared variables | |
# Defaults | |
REPO="" | |
VERBOSE=0 | |
PROFILE="default" | |
KEEP_IMAGES=3 | |
function show_help() { | |
cat > /dev/stdout << END | |
${0} -r <repo> [-n <number of images>] [-p <profile>] [-v] [-h] | |
REQUIRED ARGS: | |
-r - ecr repository name, eg vaola/fog (required) | |
OPTIONAL ARGS: | |
-n - number of images to keep (default=${KEEP_IMAGES}) | |
-p - aws profile (default=${PROFILE}) | |
-v - verbose logging (default off) | |
-h - show help | |
END | |
} | |
while getopts "h?v:n:p:r:" opt | |
do | |
case "${opt}" in | |
h|\?) | |
show_help | |
exit 0 | |
;; | |
v) VERBOSE=1 ;; | |
n) KEEP_IMAGES=${OPTARG} ;; | |
p) PROFILE=${OPTARG} ;; | |
r) REPO=${OPTARG} ;; | |
esac | |
done | |
shift "$((OPTIND-1))" | |
if [[ ${REPO} = "" ]] | |
then | |
show_help | |
exit 1 | |
fi | |
if [[ ${VERBOSE} -gt 0 ]] | |
then | |
set -x | |
fi | |
BUILD_DIR_BASE=$(mktemp -d "${TMPDIR:-/tmp/}$(basename $0).XXXXXXXXXXXX") | |
mkdir -p "${BUILD_DIR_BASE}" | |
RAW_FILE="${BUILD_DIR_BASE}/raw" | |
IMAGES_FILE="${BUILD_DIR_BASE}/images" | |
IMAGES_SORTED_FILE="${BUILD_DIR_BASE}/images_sorted" | |
function cleanup() { | |
rm -fr "${BUILD_DIR_BASE}" | |
} | |
trap cleanup TERM INT QUIT | |
aws ecr describe-images --repository-name ${REPO} --profile ${PROFILE} --output text > $RAW_FILE | |
while read line; do | |
rows=($line) | |
if [[ "${rows[0]}" != "IMAGEDETAILS" ]]; then | |
continue | |
fi | |
echo "${rows[2]} ${rows[5]} ${rows[1]}" >> ${IMAGES_FILE} | |
done < ${RAW_FILE} | |
sort -ro ${IMAGES_SORTED_FILE} ${IMAGES_FILE} | |
COUNT=0 | |
while read line; do | |
rows=($line) | |
if [ "$COUNT" -ge "${KEEP_IMAGES}" ]; then | |
aws ecr batch-delete-image --repository-name ${rows[1]} --profile ${PROFILE} --image-ids imageDigest=${rows[2]} | |
fi | |
(( COUNT++ )) | |
done < ${IMAGES_SORTED_FILE} | |
cleanup |
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