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Splitted GRACE_PERIOD_SECONDS into 2 different settings: IMAGE/CONTAINER #180

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Splitted GRACE_PERIOD_SECONDS into 2 different settings: IMAGE/CONTAINER #180

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6 changes: 3 additions & 3 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -135,13 +135,13 @@ FORCE_CONTAINER_REMOVAL=1 docker-gc

### Excluding Recently Exited Containers and Images From Garbage Collection

By default, docker-gc will not remove a container if it exited less than 3600 seconds (1 hour) ago. In some cases you might need to change this setting (e.g. you need exited containers to stick around for debugging for several days). Set the `GRACE_PERIOD_SECONDS` variable to override this default.
By default, docker-gc will not remove a container if it exited less than 3600 seconds (1 hour) ago. In some cases you might need to change this setting (e.g. you need exited containers to stick around for debugging for several days). Set the `CONTAINER_GRACE_PERIOD_SECONDS` variable to override this default.

```
GRACE_PERIOD_SECONDS=86400 docker-gc
CONTAINER_GRACE_PERIOD_SECONDS=86400 docker-gc
```

This setting also prevents the removal of images that have been created less than `GRACE_PERIOD_SECONDS` seconds ago.
You can also prevent the removal of images that have been created less than `IMAGE_GRACE_PERIOD_SECONDS` seconds ago.

### Dry run
By default, docker-gc will proceed with deletion of containers and images. To test your command-line options set the `DRY_RUN` variable to override this default.
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10 changes: 6 additions & 4 deletions docker-gc
100755 → 100644
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Expand Up @@ -43,6 +43,8 @@ set -o nounset
set -o errexit

GRACE_PERIOD_SECONDS=${GRACE_PERIOD_SECONDS:=3600}
CONTAINER_GRACE_PERIOD_SECONDS=${CONTAINER_GRACE_PERIOD_SECONDS:=$GRACE_PERIOD_SECONDS}
IMAGE_GRACE_PERIOD_SECONDS=${IMAGE_GRACE_PERIOD_SECONDS:=$GRACE_PERIOD_SECONDS}
MINIMUM_IMAGES_TO_SAVE=${MINIMUM_IMAGES_TO_SAVE:=0}
STATE_DIR=${STATE_DIR:=/var/lib/docker-gc}
FORCE_CONTAINER_REMOVAL=${FORCE_CONTAINER_REMOVAL:=0}
Expand Down Expand Up @@ -218,13 +220,13 @@ fi

container_log "Container not running" containers.exited

# Find exited containers that finished at least GRACE_PERIOD_SECONDS ago
# Find exited containers that finished at least CONTAINER_GRACE_PERIOD_SECONDS ago
> containers.reap.tmp
cat containers.exited | while read line
do
EXITED=$(${DOCKER} inspect -f "{{json .State.FinishedAt}}" ${line})
ELAPSED=$(elapsed_time $EXITED)
if [[ $ELAPSED -gt $GRACE_PERIOD_SECONDS ]]; then
if [[ $ELAPSED -gt $CONTAINER_GRACE_PERIOD_SECONDS ]]; then
echo $line >> containers.reap.tmp
fi
done
Expand Down Expand Up @@ -257,13 +259,13 @@ done
# Add dangling images to list.
$DOCKER images --no-trunc --format "{{.ID}}" --filter dangling=true >> images.all

# Find images that are created at least GRACE_PERIOD_SECONDS ago
# Find images that are created at least IMAGE_GRACE_PERIOD_SECONDS ago
> images.reap.tmp
cat images.all | sort | uniq | while read line
do
CREATED=$(${DOCKER} inspect -f "{{.Created}}" ${line})
ELAPSED=$(elapsed_time $CREATED)
if [[ $ELAPSED -gt $GRACE_PERIOD_SECONDS ]]; then
if [[ $ELAPSED -gt $IMAGE_GRACE_PERIOD_SECONDS ]]; then
echo $line >> images.reap.tmp
fi
done
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