docker笔记之常用命令篇

查看docker的磁盘使用情况

[root@node-master 20191023]# docker system df
TYPE                TOTAL               ACTIVE              SIZE                RECLAIMABLE
Images              2                   1                   2.903GB             201.9MB (6%)
Containers          1                   0                   0B                  0B
Local Volumes       0                   0                   0B                  0B
Build Cache         0                   0                   0B                  0B

查看详细的docker信息

[root@node-master ~]# docker system info
Client:
 Debug Mode: false

Server:
 Containers: 1
  Running: 0
  Paused: 0
  Stopped: 1
 Images: 10
 Server Version: 19.03.3
 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 ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 894b81a4b802e4eb2a91d1ce216b8817763c29fb
 runc version: 425e105d5a03fabd737a126ad93d62a9eeede87f
 init version: fec3683
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 3.10.0-957.27.2.el7.x86_64
 Operating System: CentOS Linux 7 (Core)
 OSType: linux
 Architecture: x86_64
 CPUs: 2
 Total Memory: 3.683GiB
 Name: node-master
 ID: HOPE:2PN3:VTE6:ET7P:UADA:5HEZ:6D3L:5BKI:RHH7:I5VP:6YWU:EVLL
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Registry Mirrors:
  https://wq238mbd.mirror.aliyuncs.com/
 Live Restore Enabled: false

WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled

实时输出Docker服务器端的事件，包括容器的创建，启动，关闭等。docker system events Get real time events from the server

[root@node-master 20191023]# docker system events

删除无用的数据docker system prune Remove unused data

[root@node-master 20191023]# docker system prune -a
WARNING! This will remove:
  - all stopped containers
  - all networks not used by at least one container
  - all images without at least one container associated to them
  - all build cache

Are you sure you want to continue? [y/N] y
Deleted Containers:
7f99c5a9fb72a81e7e638830d1b6e48f9fe7745004411b6d2d87ec74462919c4
d297370472f732b1ec3b285339619953030e2dace2388815fb6b80b844625088
cc11e7937a25887e49246724c8ab965877d2a9c46505ec4c695fde21d103928e

Deleted Images:
deleted: sha256:82ed02a848a05b82951524c171bcb326672ee346675d6826340d08db961144de
deleted: sha256:571305517e021366c2377c9ec7a771b04b3262f6a1b12ead893d3f031f6c56ab
deleted: sha256:27d94765aad0368063f3513520ac8b15675d43611e61ec4b98cbf19155944eb8
deleted: sha256:6da1ea69fb345bcebb90b4309348283024398d2b48e7d9c7388de012ff59d060
deleted: sha256:67ca2a46cb1035bd66956f84e8ca94cea66b96267b061553d2c3ca079d62688e

参考信息：https://docs.docker.com/engine/reference/commandline/system/