资源命令
docker stats
显示一个或多个容器资源使用情况统计信息的实时流。
- 帮助
[root@t32 docker]# docker stats --help
Usage: docker stats [OPTIONS] [CONTAINER...]
Display a live stream of container(s) resource usage statistics
Options:
-a, --all Show all containers (default shows just running)
--format string Pretty-print images using a Go template
--help Print usage
--no-stream Disable streaming stats and only pull the first result
[root@t32 docker]#
- 例子
[root@t32 docker]# docker stats 389458e3835f fc8412329b91
CONTAINER CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O PIDS
389458e3835f 0.05% 18.77 MiB / 251.6 GiB 0.01% 0 B / 0 B 0 B / 0 B 67
fc8412329b91 0.00% 436 KiB / 251.6 GiB 0.00% 2.82 GB / 156 MB 0 B / 6.19 GB 1
docker system
管理docker系统
- 帮助
[root@t32 docker]# docker system --help
Usage: docker system COMMAND
Manage Docker
Options:
--help Print usage
Commands:
df Show docker disk usage
events Get real time events from the server
info Display system-wide information
prune Remove unused data
dockre system df
显示docker的硬盘使用情况
- 帮助
[root@t32 docker]# docker system df --help
Usage: docker system df [OPTIONS]
Show docker disk usage
Options:
--help Print usage
-v, --verbose Show detailed information on space usage
- 例子
[root@t32 docker]# docker system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 16 12 4.922 GB 2.678 GB (54%)
Containers 22 19 1.46 GB 0 B (0%)
Local Volumes 2 2 47.13 MB 0 B (0%)
- RECLAIMABLE:可回收的磁盘空间
- SIZE:使用的磁盘空间
docker system events
和docker events用法一样，具体参见我的另外一篇文章Docker专题—Docker常用命令之基础篇
docker system info
和docker info用法一样，具体参见我的另外一篇文章Docker专题—Docker常用命令之基础篇
docker system prune
删除可回收的资源
- 帮助
[root@t32 docker]# docker system prune --help
Usage: docker system prune [OPTIONS]
Remove unused data
Options:
-a, --all Remove all unused images not just dangling ones
-f, --force Do not prompt for confirmation
--help Print usage
- 例子
[root@t32 docker]# docker system prune -a
WARNING! This will remove:
- all stopped containers
- all volumes not used by at least one container
- all networks not used by at least one container
- all images without at least one container associated to them
Are you sure you want to continue? [y/N] y
Deleted Containers:
fa44aaf111d88862a5eb7718f15b9a4f26b7814f9f77bf03851319acb161d75b
bd1eeaa010500f77398b4dc4437d384f688ac72571dcaf25f1339237abb48548
9d5840153e06906f054d5995c81950793f17425f9db9ed4cef11b05cb5922107
Deleted Images:
untagged: docker.io/centos:latest
untagged: docker.io/rancher/calico-cni:v3.4.0
.....
Total reclaimed space: 2.83 GB
[root@t32 docker]# docker system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 10 10 2.092 GB 4.148 MB (0%)
Containers 19 19 1.46 GB 0 B (0%)
Local Volumes 2 2 47.13 MB 0 B (0%)
[root@t32 docker]#