Smaine Kahlouch
9 years ago
5 changed files with 0 additions and 231 deletions
Unified View
Diff Options
-
4environments/dev/group_vars/k8s-cluster.yml
-
4environments/production/group_vars/k8s-cluster.yml
-
211roles/docker/files/docker-gc
-
8roles/docker/tasks/install.yml
-
4roles/docker/templates/cron_docker-gc.j2
@ -1,211 +0,0 @@ |
|||||
#!/bin/bash |
|
||||
|
|
||||
# Copyright (c) 2014 Spotify AB. |
|
||||
# |
|
||||
# Licensed to the Apache Software Foundation (ASF) under one |
|
||||
# or more contributor license agreements. See the NOTICE file |
|
||||
# distributed with this work for additional information |
|
||||
# regarding copyright ownership. The ASF licenses this file |
|
||||
# to you 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. |
|
||||
|
|
||||
# This script attempts to garbage collect docker containers and images. |
|
||||
# Containers that exited more than an hour ago are removed. |
|
||||
# Images that have existed more than an hour and are not in use by any |
|
||||
# containers are removed. |
|
||||
|
|
||||
# Note: Although docker normally prevents removal of images that are in use by |
|
||||
# containers, we take extra care to not remove any image tags (e.g. |
|
||||
# ubuntu:14.04, busybox, etc) that are used by containers. A naive |
|
||||
# "docker rmi `docker images -q`" will leave images stripped of all tags, |
|
||||
# forcing users to re-pull the repositories even though the images |
|
||||
# themselves are still on disk. |
|
||||
|
|
||||
# Note: State is stored in $STATE_DIR, defaulting to /var/lib/docker-gc |
|
||||
|
|
||||
set -o nounset |
|
||||
set -o errexit |
|
||||
|
|
||||
GRACE_PERIOD_SECONDS=${GRACE_PERIOD_SECONDS:=3600} |
|
||||
STATE_DIR=${STATE_DIR:=/var/lib/docker-gc} |
|
||||
DOCKER=${DOCKER:=docker} |
|
||||
PID_DIR=${PID_DIR:=/var/run} |
|
||||
|
|
||||
for pid in $(pidof -s docker-gc); do |
|
||||
if [[ $pid != $$ ]]; then |
|
||||
echo "[$(date)] : docker-gc : Process is already running with PID $pid" |
|
||||
exit 1 |
|
||||
fi |
|
||||
done |
|
||||
|
|
||||
trap "rm -f -- '$PID_DIR/dockergc'" EXIT |
|
||||
|
|
||||
echo $$ > $PID_DIR/dockergc |
|
||||
|
|
||||
|
|
||||
EXCLUDE_FROM_GC=${EXCLUDE_FROM_GC:=/etc/docker-gc-exclude} |
|
||||
if [ ! -f "$EXCLUDE_FROM_GC" ] |
|
||||
then |
|
||||
EXCLUDE_FROM_GC=/dev/null |
|
||||
fi |
|
||||
|
|
||||
EXCLUDE_CONTAINERS_FROM_GC=${EXCLUDE_CONTAINERS_FROM_GC:=/etc/docker-gc-exclude-containers} |
|
||||
if [ ! -f "$EXCLUDE_CONTAINERS_FROM_GC" ] |
|
||||
then |
|
||||
EXCLUDE_CONTAINERS_FROM_GC=/dev/null |
|
||||
fi |
|
||||
|
|
||||
EXCLUDE_IDS_FILE="exclude_ids" |
|
||||
EXCLUDE_CONTAINER_IDS_FILE="exclude_container_ids" |
|
||||
|
|
||||
function date_parse { |
|
||||
if date --utc >/dev/null 2>&1; then |
|
||||
# GNU/date |
|
||||
echo $(date -u --date "${1}" "+%s") |
|
||||
else |
|
||||
# BSD/date |
|
||||
echo $(date -j -u -f "%F %T" "${1}" "+%s") |
|
||||
fi |
|
||||
} |
|
||||
|
|
||||
# Elapsed time since a docker timestamp, in seconds |
|
||||
function elapsed_time() { |
|
||||
# Docker 1.5.0 datetime format is 2015-07-03T02:39:00.390284991 |
|
||||
# Docker 1.7.0 datetime format is 2015-07-03 02:39:00.390284991 +0000 UTC |
|
||||
utcnow=$(date -u "+%s") |
|
||||
replace_q="${1#\"}" |
|
||||
without_ms="${replace_q:0:19}" |
|
||||
replace_t="${without_ms/T/ }" |
|
||||
epoch=$(date_parse "${replace_t}") |
|
||||
echo $(($utcnow - $epoch)) |
|
||||
} |
|
||||
|
|
||||
function compute_exclude_ids() { |
|
||||
# Find images that match patterns in the EXCLUDE_FROM_GC file and put their |
|
||||
# id prefixes into $EXCLUDE_IDS_FILE, prefixed with ^ |
|
||||
|
|
||||
PROCESSED_EXCLUDES="processed_excludes.tmp" |
|
||||
# Take each line and put a space at the beginning and end, so when we |
|
||||
# grep for them below, it will effectively be: "match either repo:tag |
|
||||
# or imageid". Also delete blank lines or lines that only contain |
|
||||
# whitespace |
|
||||
sed 's/^\(.*\)$/ \1 /' $EXCLUDE_FROM_GC | sed '/^ *$/d' > $PROCESSED_EXCLUDES |
|
||||
# The following looks a bit of a mess, but here's what it does: |
|
||||
# 1. Get images |
|
||||
# 2. Skip header line |
|
||||
# 3. Turn columnar display of 'REPO TAG IMAGEID ....' to 'REPO:TAG IMAGEID' |
|
||||
# 4. find lines that contain things mentioned in PROCESSED_EXCLUDES |
|
||||
# 5. Grab the image id from the line |
|
||||
# 6. Prepend ^ to the beginning of each line |
|
||||
|
|
||||
# What this does is make grep patterns to match image ids mentioned by |
|
||||
# either repo:tag or image id for later greppage |
|
||||
$DOCKER images \ |
|
||||
| tail -n+2 \ |
|
||||
| sed 's/^\([^ ]*\) *\([^ ]*\) *\([^ ]*\).*/ \1:\2 \3 /' \ |
|
||||
| grep -f $PROCESSED_EXCLUDES 2>/dev/null \ |
|
||||
| cut -d' ' -f3 \ |
|
||||
| sed 's/^/^/' > $EXCLUDE_IDS_FILE |
|
||||
} |
|
||||
|
|
||||
function compute_exclude_container_ids() { |
|
||||
# Find containers matching to patterns listed in EXCLUDE_CONTAINERS_FROM_GC file |
|
||||
# Implode their values with a \| separator on a single line |
|
||||
PROCESSED_EXCLUDES=`cat $EXCLUDE_CONTAINERS_FROM_GC \ |
|
||||
| xargs \ |
|
||||
| sed -e 's/ /\|/g'` |
|
||||
# The empty string would match everything |
|
||||
if [ "$PROCESSED_EXCLUDES" = "" ]; then |
|
||||
touch $EXCLUDE_CONTAINER_IDS_FILE |
|
||||
return |
|
||||
fi |
|
||||
# Find all docker images |
|
||||
# Filter out with matching names |
|
||||
# and put them to $EXCLUDE_CONTAINER_IDS_FILE |
|
||||
$DOCKER ps -a \ |
|
||||
| grep -E "$PROCESSED_EXCLUDES" \ |
|
||||
| awk '{ print $1 }' \ |
|
||||
| tr -s " " "\012" \ |
|
||||
| sort -u > $EXCLUDE_CONTAINER_IDS_FILE |
|
||||
} |
|
||||
|
|
||||
# Change into the state directory (and create it if it doesn't exist) |
|
||||
if [ ! -d "$STATE_DIR" ] |
|
||||
then |
|
||||
mkdir -p $STATE_DIR |
|
||||
fi |
|
||||
cd "$STATE_DIR" |
|
||||
|
|
||||
# Verify that docker is reachable |
|
||||
$DOCKER version 1>/dev/null |
|
||||
|
|
||||
# List all currently existing containers |
|
||||
$DOCKER ps -a -q --no-trunc | sort | uniq > containers.all |
|
||||
|
|
||||
# List running containers |
|
||||
$DOCKER ps -q --no-trunc | sort | uniq > containers.running |
|
||||
|
|
||||
# compute ids of container images to exclude from GC |
|
||||
compute_exclude_ids |
|
||||
|
|
||||
# compute ids of containers to exclude from GC |
|
||||
compute_exclude_container_ids |
|
||||
|
|
||||
# List containers that are not running |
|
||||
comm -23 containers.all containers.running > containers.exited |
|
||||
|
|
||||
# Find exited containers that finished at least GRACE_PERIOD_SECONDS ago |
|
||||
echo -n "" > containers.reap.tmp |
|
||||
cat containers.exited | while read line |
|
||||
do |
|
||||
EXITED=$(${DOCKER} inspect -f "{{json .State.FinishedAt}}" ${line}) |
|
||||
ELAPSED=$(elapsed_time $EXITED) |
|
||||
if [[ $ELAPSED -gt $GRACE_PERIOD_SECONDS ]]; then |
|
||||
echo $line >> containers.reap.tmp |
|
||||
fi |
|
||||
done |
|
||||
|
|
||||
# List containers that we will remove and exclude ids. |
|
||||
cat containers.reap.tmp | sort | uniq | grep -v -f $EXCLUDE_CONTAINER_IDS_FILE > containers.reap || true |
|
||||
|
|
||||
# List containers that we will keep. |
|
||||
comm -23 containers.all containers.reap > containers.keep |
|
||||
|
|
||||
# List images used by containers that we keep. |
|
||||
# This may be both image id's and repo/name:tag, so normalize to image id's only |
|
||||
cat containers.keep | |
|
||||
xargs -n 1 $DOCKER inspect -f '{{.Config.Image}}' 2>/dev/null | |
|
||||
sort | uniq | |
|
||||
xargs -n 1 $DOCKER inspect -f '{{.Id}}' 2>/dev/null | |
|
||||
sort | uniq > images.used |
|
||||
|
|
||||
# List images to reap; images that existed last run and are not in use. |
|
||||
$DOCKER images -q --no-trunc | sort | uniq > images.all |
|
||||
|
|
||||
# Find images that are created at least GRACE_PERIOD_SECONDS ago |
|
||||
echo -n "" > images.reap.tmp |
|
||||
cat images.all | while read line |
|
||||
do |
|
||||
CREATED=$(${DOCKER} inspect -f "{{.Created}}" ${line}) |
|
||||
ELAPSED=$(elapsed_time $CREATED) |
|
||||
if [[ $ELAPSED -gt $GRACE_PERIOD_SECONDS ]]; then |
|
||||
echo $line >> images.reap.tmp |
|
||||
fi |
|
||||
done |
|
||||
comm -23 images.reap.tmp images.used | grep -v -f $EXCLUDE_IDS_FILE > images.reap || true |
|
||||
|
|
||||
# Reap containers. |
|
||||
xargs -n 1 $DOCKER rm --volumes=true < containers.reap &>/dev/null || true |
|
||||
|
|
||||
# Reap images. |
|
||||
xargs -n 1 $DOCKER rmi < images.reap &>/dev/null || true |
|
||||
@ -1,4 +0,0 @@ |
|||||
#!/bin/sh |
|
||||
|
|
||||
test -x {{ bin_dir }}/docker-gc || exit 0 |
|
||||
{{ bin_dir }}/docker-gc |
|
||||
xxxxxxxxxx