docker 데이터 폴더 변경

리눅스에서 docker 이미지는 기본적으로 /ver/lib/docker에 쌓인다. 

내 컴퓨터의 경우  /에 할당된 디스크 용량은 50GB이고, 도커 데이터로 인해 공간이 부족해지면 문제를 발생시킨다.

그래서 /ver/lib/docker를 /home/bylee/data/docker로 변경한다.

 

다음은 docker info 명령어로 도커 데이터 위치를 확인한다.

[root@bylee5 docker.service.d]# docker info
Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 0
Server Version: 18.03.0-ce
Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: cfd04396dc68220d1cecbe686a6cc3aa5ce3667c
runc version: 4fc53a81fb7c994640722ac585fa9ca548971871
init version: 949e6fa
Security Options:
 seccomp
  Profile: default
Kernel Version: 4.17.3-100.fc27.x86_64
Operating System: Fedora 27 (Workstation Edition)
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 15.54GiB
Name: bylee5
ID: 3AKC:QDXD:ML5K:IQLI:O74N:PXKK:A4PD:Q7X6:NYCP:E2NT:5DR2:6MNA
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Username: bitnine
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false

변경하는 명령어는 다음과 같다.

# sudo mkdir /etc/systemd/system/docker.service.d
# sudo touch /etc/systemd/system/docker.service.d/docker.conf
# sudo vi /etc/systemd/system/docker.service.d/docker.conf
[Service]
ExecStart=
ExecStart=/usr/bin/dockerd -g "/mnt/new_volume"
# sudo systemctl daemon-reload 
# sudo systemctl start docker

[root@bylee5 docker.service.d]# systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
  Drop-In: /etc/systemd/system/docker.service.d
           └─docker.conf
   Active: active (running) since Wed 2018-10-10 15:05:29 KST; 2min 43s ago
     Docs: https://docs.docker.com
 Main PID: 453 (dockerd)
    Tasks: 24
   Memory: 50.7M
      CPU: 1.361s
   CGroup: /system.slice/docker.service
           ├─453 /usr/bin/dockerd -g /home/bylee/data/docker
           └─461 docker-containerd --config /var/run/docker/containerd/containerd.toml

 

docker info 명령어로 다음과 같이 확인한다.

[root@bylee5 docker.service.d]# docker info
Containers: 11
 Running: 0
 Paused: 0
 Stopped: 11
Images: 97
Server Version: 18.03.0-ce
Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: cfd04396dc68220d1cecbe686a6cc3aa5ce3667c
runc version: 4fc53a81fb7c994640722ac585fa9ca548971871
init version: 949e6fa
Security Options:
 seccomp
  Profile: default
Kernel Version: 4.17.3-100.fc27.x86_64
Operating System: Fedora 27 (Workstation Edition)
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 15.54GiB
Name: bylee5
ID: 3AKC:QDXD:ML5K:IQLI:O74N:PXKK:A4PD:Q7X6:NYCP:E2NT:5DR2:6MNA
Docker Root Dir: /home/bylee/data/docker
Debug Mode (client): false
Debug Mode (server): false
Username: bitnine
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false

 

참고:

-https://sanenthusiast.com/change-default-image-container-location-docker/
-https://github.com/IronicBadger/til/blob/master/docker/change-docker-root.md