📌 문제

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📖 문제 발생

Jenkins CI/CD 빌드/배포 자동화 수행 중 오류가 발생

No space left on device

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📖 문제 원인

• Jenkins CI/CD가 반복적으로 수행되는 과정에서 Build Cache가 쌓이면서 문제 발생
• $ docker system df: 현재 사용중인 이미지, 컨테이너 및 볼륨이 얼마나 많은 공간을 사용하고 있는지 확인할 수 있는 명령어. 뒤에 -v (vervose)옵션을 추가하면 사용하지 않는 이미지와 컨테이너도 확인 가능

$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/root       311G  310G  284M 100% /
...

$ sudo docker system df -v

Images space usage:

REPOSITORY       TAG       IMAGE ID       CREATED        SIZE      SHARED SIZE   UNIQUE SIZE   CONTAINERS
server/backend   latest    aa4d75651096   4 hours ago    2.36GB    0B            2.356GB       1
server/flask     latest    2df4d4b0373f   9 hours ago    1.71GB    0B            1.714GB       1
server/sdwebui   latest    97b0cc844eb6   13 days ago    12.9GB    0B            12.9GB        1
server/jenkins   latest    53eb4ac17ccf   3 weeks ago    996MB     0B            996.1MB       1
redis            latest    170a1e90f843   2 months ago   138MB     0B            137.7MB       1

Containers space usage:

CONTAINER ID   IMAGE            COMMAND                  LOCAL VOLUMES   SIZE      CREATED       STATUS       NAMES
51fea23b7f65   server/backend   "java -Dfile.encodin…"   0               69.8MB    4 hours ago   Up 4 hours   server-backend
0bcf716ad266   server/flask     "python -m app"          0               75.9kB    9 hours ago   Up 9 hours   peaceful_poincare
ec6a6ba85069   redis:latest     "docker-entrypoint.s…"   1               970B      12 days ago   Up 12 days   server-redis
d45a7633117c   server/sdwebui   "/bin/sh -c './webui…"   0               1.52MB    13 days ago   Up 13 days   server-sdwebui
b4f0930a3620   server/jenkins   "/usr/bin/tini -- /u…"   0               2.68GB    2 weeks ago   Up 2 weeks   server-jenkins

Local Volumes space usage:

VOLUME NAME                                                        LINKS     SIZE
frontend                                                           0         986.1MB
99fbae4584bbc073085c13eb3521a2b8fc8e473e49d8e416bd0c2a0fad52d622   1         692B

Build cache usage: 239.1GB

CACHE ID       CACHE TYPE     SIZE      CREATED        LAST USED      USAGE     SHARED
tedxqgtdxyuo   regular        0B        3 weeks ago    3 weeks ago    1         true
o0ctbsb203zx   regular        0B        3 weeks ago    3 weeks ago    1         true
rj7x1gryphqf   regular        0B        3 weeks ago    3 weeks ago    1         true
lwkf9nf8n56i   regular        0B        3 weeks ago    3 weeks ago    1         true
9xgrulsw4agg   regular        0B        3 weeks ago    3 weeks ago    1         true
...
wnxw3nbkq9lq   source.local   1.08kB    13 days ago    4 hours ago    72        false
kk63u2877y75   source.local   1.43GB    13 days ago    4 hours ago    72        false
u961phqnm9hk   source.local   0B        13 days ago    4 hours ago    72        false
yi0bk5rb8196   regular        1.43GB    4 hours ago    4 hours ago    1         false
qx24ltqc2i91   regular        374MB     4 hours ago    4 hours ago    1         false

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📌 해결

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📖 해결 방법

$ docker {option} prune: 사용하지 않는 컨테이너 이미지를 제거하는 명령어.

• docker volume prune: 미사용 볼륨 제거
• docker container prune: 미사용 컨테이너 제거
• docker image prune: 미사용 이미지 제거
• docker system prune: 미사용 중인 이미지, 컨테이너, 볼륨 모두 제거

$ sudo docker system prune
WARNING! This will remove:
  - all stopped containers
  - all networks not used by at least one container
  - all dangling images
  - unused build cache

Are you sure you want to continue? [y/N] y
Deleted build cache objects:
srcnm8ftb1v79f6ettaf2bb6z
w8680tyap8d997hqucw9q6r44
pqtcfdmmueoyvjn7k3d5n0kat
i9opfym5x8wqm66huz0hxqu8e
v36akpatuyaoa7xgwb5sq89zi
...
972yylz5mtkcx7jpk2aknp1go
ocgyuijoqbqozrtiryt5xsuk6
i44z9mydueux37f9axhgecs1p
kmxd7dz6hu9izv9ww8egsdfzf
rp8d0tqyi6f8g0fftmjaqrb2a

Total reclaimed space: 239.1GB

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📖 결과 확인

$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/root       311G   76G  235G  25% /
...

$ sudo docker system df -v
Images space usage:

REPOSITORY       TAG       IMAGE ID       CREATED        SIZE      SHARED SIZE   UNIQUE SIZE   CONTAINERS
server/backend   latest    aa4d75651096   4 hours ago    2.36GB    0B            2.356GB       1
server/flask     latest    2df4d4b0373f   9 hours ago    1.71GB    0B            1.714GB       1
server/sdwebui   latest    97b0cc844eb6   13 days ago    12.9GB    0B            12.9GB        1
server/jenkins   latest    53eb4ac17ccf   3 weeks ago    996MB     0B            996.1MB       1
redis            latest    170a1e90f843   2 months ago   138MB     0B            137.7MB       1

Containers space usage:

CONTAINER ID   IMAGE            COMMAND                  LOCAL VOLUMES   SIZE      CREATED       STATUS       NAMES
51fea23b7f65   server/backend   "java -Dfile.encodin…"   0               69.8MB    4 hours ago   Up 4 hours   server-backend
0bcf716ad266   server/flask     "python -m app"          0               75.9kB    9 hours ago   Up 9 hours   peaceful_poincare
ec6a6ba85069   redis:latest     "docker-entrypoint.s…"   1               970B      12 days ago   Up 12 days   server-redis
d45a7633117c   server/sdwebui   "/bin/sh -c './webui…"   0               1.52MB    13 days ago   Up 13 days   server-sdwebui
b4f0930a3620   server/jenkins   "/usr/bin/tini -- /u…"   0               2.68GB    2 weeks ago   Up 2 weeks   server-jenkins

Local Volumes space usage:

VOLUME NAME                                                        LINKS     SIZE
frontend                                                           0         986.1MB
99fbae4584bbc073085c13eb3521a2b8fc8e473e49d8e416bd0c2a0fad52d622   1         692B

Build cache usage: 0B

CACHE ID       CACHE TYPE   SIZE      CREATED       LAST USED     USAGE     SHARED
tedxqgtdxyuo   regular      0B        3 weeks ago   3 weeks ago   1         true
o0ctbsb203zx   regular      0B        3 weeks ago   3 weeks ago   1         true
rj7x1gryphqf   regular      0B        3 weeks ago   3 weeks ago   1         true
lwkf9nf8n56i   regular      0B        3 weeks ago   3 weeks ago   1         true
9xgrulsw4agg   regular      0B        3 weeks ago   3 weeks ago   1         true
...
nasnj8zhsxh2   regular      0B        8 days ago    9 hours ago   26        true
jjsnpxdic89f   regular      173MB     9 hours ago   9 hours ago   1         true
xu7sjqzi7lbr   regular      0B        5 days ago    4 hours ago   50        true
u3han9rdyypr   regular      1.53GB    4 hours ago   4 hours ago   1         true
ua8dcwafo6s4   regular      172MB     4 hours ago   4 hours ago   1         true