how could I clean my hard drive for the docker server. I have a docker server which hosts 4 containers, but they maxed out the volume. I would like to know how I can shrink the docker folder without itnerupting the running containers.
thanks.
[root@docker docker]# ls -alth
total 20K
drwxr-xr-x. 29 root root 4.0K May 30 03:40 …
drwx------. 50 root root 4.0K May 4 19:15 volumes
drwx------. 21 root root 4.0K May 4 19:15 containers
drwx------. 2 root root 6 May 4 19:13 tmp
drwx------. 5 root root 50 Nov 2 2016 devicemapper
drwx–x--x. 10 root root 4.0K Nov 2 2016 .
drwx------. 2 root root 6 Nov 2 2016 swarm
drwxr-x—. 3 root root 18 Nov 2 2016 network
drwx------. 2 root root 6 Nov 2 2016 trust
drwx------. 3 root root 25 Nov 2 2016 image
[root@docker docker]# du --max-depth=1 -h . | sort -n -r
364K ./volumes
72K ./network
49G .
43G ./containers
9.1M ./image
6.6G ./devicemapper
0 ./trust
0 ./tmp
0 ./swarm
[root@docker docker]#
[root@docker docker]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
71ee5fa518a0 kafka-websocket “/bin/sh -c 'java -ja” 4 months ago Up 4 months 0.0.0.0:7080->7080/tcp kafka-websocket
f2736544c212 confluentinc/cp-zookeeper:3.2.1 “/etc/confluent/docke” 4 months ago Up 4 months 2181/tcp, 2888/tcp, 3888/tcp, 0.0.0.0:32181->32181/tcp zookeeper
65f3f4fef5d9 jorith88/dotcms-bootcamp-dotcms “/opt/dotcms/start-do” 10 months ago Up 10 months 8009/tcp, 8080/tcp jason_dotcms
dbb36826dff9 jorith88/dotcms-bootcamp-db “/docker-entrypoint.s” 10 months ago Up 10 months 5432/tcp gloomy_bhabha
[root@docker docker]#