docker find image location

env: CentOS 7
        Docker 18.09.0-ce-beta1

在docker環境中我們常常因為測試揮抓取許多image檔，這次要透過OS實體路徑的方式直接找到這些image: Oracle 12.2.0.1

1.先確定docker有安裝，並且找出docker資訊

從以下資訊也可以找到，找到"Docker Root Dir"就是我們要找的路徑

 

[root@localhost docker]# docker info

Containers: 0

 Running: 0

 Paused: 0

 Stopped: 0

Images: 1

Server Version: 18.09.0-ce-beta1

Storage Driver: overlay2

 Backing Filesystem: xfs

 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 local logentries splunk syslog

Swarm: inactive

Runtimes: containerd runc

Default Runtime: containerd

Init Binary: docker-init

containerd version: ce243288e27971e324363de8f322d221635a8521 (expected: 468a545b9edcd5932818eb9de8e72413e616e86e)

runc version: 70ca035aa6ecfc496e13365fdef20383408501ba (expected: 69663f0bd4b60df09991c08812a60108003fa340)

init version: fec3683

Kernel Version: 3.10.0-862.el7.x86_64

Operating System: CentOS Linux 7 (Core)

OSType: linux

Architecture: x86_64

CPUs: 1

Total Memory: 2.92GiB

Name: localhost.localdomain

ID: QA4X:MPVV:P6TF:5GJ2:SM7Z:WCX2:TIMG:NVHB:W5ZA:ROUM:PRTE:LCB4

Docker Root Dir: /var/lib/docker

Debug Mode (client): false

Debug Mode (server): false

Username: bennett3147

Registry: https://index.docker.io/v1/

Labels:

Experimental: false

Insecure Registries:

 127.0.0.0/8

Live Restore Enabled: false

Product License: Community Engine

2.找出docker儲存image的預設路徑
command:
sudo docker info | grep "Docker Root Dir"

[root@localhost docker]# sudo docker info | grep "Docker Root Dir"

Docker Root Dir: /var/lib/docker

3.利用"find"指令找出大小大於2GB檔案
command:
find / -type f -size +2G

[root@localhost docker]# find / -type f -size +2G

/proc/kcore

find: ‘/proc/6556/task/6556/fdinfo/5’: No such file or directory

find: ‘/proc/6556/fdinfo/6’: No such file or directory

find: ‘/run/user/1000/gvfs’: Permission denied

/var/lib/docker/overlay2/38d70160996a7bd399a47b5b2ce00dc4ad3aae436d885871437bef7f77ef51ab/diff/tmp/dbsetup/dbtar/db12.2.0.1.0.tar.gz

[root@localhost docker]#