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#!/bin/bash
set -e
docker_ps_opts=""
dry_run=false
hours="10"
verbose=false
OPTS="`getopt -l docker_ps_opts:,dry_run:,hours:,verbose: -- "$@"`"
while test $# -gt 1; do
case $1 in
--docker_ps_opts) docker_ps_opts="$2"; shift ;;
--dry_run) dry_run="$2"; shift ;;
--hours) hours="$2"; shift ;;
--verbose) verbose="$2"; shift ;;
esac
shift
done
if $verbose; then
set -x
fi
if [ "$hours" -lt "0" ]; then
echo "ERROR: Refusing to delete containers that are $hours hours old"
exit 1
fi
echo "Container report before:"
docker ps $docker_ps_opts
rm_containers=()
for container in $(docker ps --format "{{.ID}} {{.RunningFor}}" $docker_ps_opts | grep "hour\|day" | cut -d" " -f 1); do
container_days="$(docker ps --format "{{.ID}} {{.RunningFor}}" $docker_ps_opts | grep "$container [0-9]\+ day" | cut -d" " -f 2)"
if [ x"$container_days" = x"" ]; then container_days="0"; fi
container_hours="$(docker ps --format "{{.ID}} {{.RunningFor}}" $docker_ps_opts | grep "$container [0-9]\+ hour" | cut -d" " -f 2)"
if [ x"$container_hours" = x"" ]; then container_hours="0"; fi
container_hours=$(($container_days*24 + $container_hours))
if [ "$container_hours" -gt "$hours" ]; then
rm_containers=("${rm_containers[@]}" $container)
fi
done
status="0"
if [ ${#rm_containers[@]} != 0 ]; then
echo "Removing containers: ${rm_containers[@]}"
echo "Increasing exit code by 1 to indicate stale containers"
status="$(($status+1))"
if ! $dry_run; then
for container in "${rm_containers[@]}"; do
echo "Removing container $container"
docker rm -f -v $container | cat
echo "docker rm exit status: ${PIPESTATUS[0]}"
done
else
echo "DRY_RUN: NOT REMOVING CONTAINERS"
fi
echo "Containers report after:"
docker ps $docker_ps_opts
fi
if [ x"$(docker volume ls -q -f dangling=true)" != x"" ]; then
echo "Removing dangling volumes"
echo "Increasing exit code by 2 to indicate dangling volumes"
status="$(($status+2))"
if ! $dry_run; then
docker volume ls -q -f dangling=true | xargs docker volume rm | cat
echo "xargs docker volume rm exit status: ${PIPESTATUS[1]}"
else
echo "DRY_RUN: NOT REMOVING DANGLING VOLUMES"
fi
fi
rm_images=()
for image in $(docker images -q -f dangling=true); do
if ! docker ps -a --format "{{.Image}}" | grep -q $image; then
rm_images=("${rm_images[@]}" $image)
fi
done
if [ ${#rm_images[@]} != 0 ]; then
echo "Removing unused images"
echo "Increasing exit code by 4 to indicate unused images"
status="$(($status+4))"
if ! $dry_run; then
for image in "${rm_images[@]}"; do
docker rmi $image | cat
echo "docker rmi exit status: ${PIPESTATUS[0]}"
done
else
echo "DRY_RUN: NOT REMOVING UNTAGGED IMAGES"
fi
fi
exit $status
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