Docker Optimization and cleanup script(도커 최적화 하기)

예전에 도커 용량 관련 문제로 한번 고생한적이 있었습니다.
(https://www.hahwul.com/2018/08/docker-no-space-left-on-device-in-macos.html)

도커 자체가 많이 사용할수록 리소스를 엄청쓰는데(물론 VM에 비하면 뭐...) 정기적으로 청소해주면 위에 문제나 용량, 속도 면에서 좀 이득이 되는 부분들이 있습니다.

그래서.. 구글링좀 해서 도커 clean up script 정리해봤습니다. 종종 돌려주시는게 좋아요 :)

크게 이미지, 컨테이터, 네트워크 어댑터를 정리하는 내용입니다.

Clean script

아래 부분 확인하고 별 이상 없을거라 생각도시면 하는거 추천드려요(괜한 이미지 날라갈수도

# clean containers
docker rm $(docker ps -qa --no-trunc --filter "status=exited")

# clean images
docker rmi $(docker images | grep "none" | awk '/ / { print $3 }')

# clean networks
docker network rm $(docker network ls | grep "bridge" | awk '/ / { print $1 }')

# one line(container + images)
docker rm $(docker ps -qa --no-trunc --filter "status=exited");docker rmi $(docker images | grep "none" | awk '/ / { print $3 }');

Clean Images 

우선 images 지우는건 이미지 중에 none 인 항목들만 지웁니다. 이미지를 계속 commit 해서 쓰기 떄문에 none은 쓸데없이 자리 차지하는 경우가 많죠

docker images | grep "none"

docker rmi $(docker images | grep "none" | awk '/ / { print $3 }')

저도 한 4개 정도 지워졌네요.

docker rmi $(docker images | grep "none" | awk '/ / { print $3 }')
Deleted: sha256:9c74ba29229d47f63fc6ad03d7456f56ec85fe16f7d8f76c5a163e86cea82a8f
Deleted: sha256:ffcf5074027640d3ec3bebe56d351854c15e98fb72cd3a1c97f3a1a52541836a
Deleted: sha256:8e7a29744797bdb8ff52137787a836b0df96745e2b33a9e1dbdad6e3ee1835e3
Deleted: sha256:13b657d393c68096809a6c785e2454709b024a73216a5528e9348b9d5d9459f7

Clean Containers

containers는 현재 구동중이지 않은 리스트들도 도커가 가지고 있습니다. 결국은 다 리소스를 차지하는거기 때문에 안쓰는건 지워줍니다.

docker ps -a --filter "status=exited"

docker ps 명령 중 --fileter 옵션이 있는데, 이걸로 종료된 컨데이너들을 찾아줍니다. 그리고 삭제해주시면 됩니다.

docker rm $(docker ps -qa --no-trunc --filter "status=exited")

저의 경우는....

docker rm $(docker ps -qa --no-trunc --filter "status=exited")
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... 생략 ...

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Clean Networks adaptor

마지막으로 bridge 네트워크에 대한 삭제인데, 이건 사용하시는거 체크해보고 하는게 좋을듯해요.
안해도 뭐 무방하지만, docker network도 네트워크 인터페이스로 잡히기 떄문에 최적화를 위해선 지워주는게 좋습니닷.

docker network ls | grep "bridge" 

docker network rm $(docker network ls | grep "bridge" | awk '/ / { print $1 }')

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HAHWUL Security engineer, Gopher and H4cker!