root@****:/home/****# docker system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 0 0 0B 0B
Containers 0 0 0B 0B
Local Volumes 0 0 0B 0B
Build Cache 0 0 0B 0B
root@****:/home/****# docker images -a
REPOSITORY TAG IMAGE ID CREATED SIZE
root@****:/home/****# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS
NAMES
这是docker system df的输出，您可以看到没有图像或容器等。
但是，/ var / lib / docker / overlay2正在使用巨大的空间，如下所示：
root@****:/home/****# du -h /var/lib/docker/overlay2/ | sort -hr | head
139G /var/lib/docker/overlay2/
5.9G /var/lib/docker/overlay2/a7ea104e24413200b446f5ff91d6b6da2c9e737a61e13454c12b6f7acab79d40/diff/python-docker/****
5.9G /var/lib/docker/overlay2/a7ea104e24413200b446f5ff91d6b6da2c9e737a61e13454c12b6f7acab79d40/diff/python-docker
5.9G /var/lib/docker/overlay2/a7ea104e24413200b446f5ff91d6b6da2c9e737a61e13454c12b6f7acab79d40/diff
5.9G /var/lib/docker/overlay2/a7ea104e24413200b446f5ff91d6b6da2c9e737a61e13454c12b6f7acab79d40
5.3G /var/lib/docker/overlay2/d1e624c4d1ece71b701ee2100af88edb083a39edd2810c66d312f6e889241edb/diff/python-docker/****
5.3G /var/lib/docker/overlay2/d1e624c4d1ece71b701ee2100af88edb083a39edd2810c66d312f6e889241edb/diff/python-docker
5.3G /var/lib/docker/overlay2/d1e624c4d1ece71b701ee2100af88edb083a39edd2810c66d312f6e889241edb/diff
5.3G /var/lib/docker/overlay2/d1e624c4d1ece71b701ee2100af88edb083a39edd2810c66d312f6e889241edb
5.3G /var/lib/docker/overlay2/cfdccf54b0022c0c6739f5c09639d5faf62ceba1ecb7b649bc396174620fd3d6/diff/python-docker/****
...
我的码头工人信息如下：
root@****:/home/****# docker info
Client:
Debug Mode: false
Server:
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 19.03.11
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: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc version:
init version: fec3683
Security Options:
apparmor
seccomp
Profile: default
Kernel Version: 4.15.0-106-generic
Operating System: Ubuntu Core 16
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 31.33GiB
Name: ****
ID: ****
Docker Root Dir: /var/snap/docker/common/var-lib-docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
WARNING: No swap limit support
我不明白为什么/ var / lib / docker / overlay2中有这么多东西。确切地说，diff是造成这种情况的元凶。
ncdu 1.12 ~ Use the arrow keys to navigate, press ? for help
--- /var/lib/docker/overlay2/a7ea104e24413200b446f5ff91d6b6da2c9e737a61e13454c12b6f7acab79d40 ----------
/..
5.8 GiB [##########] /diff e 4.0 KiB [ ] /work
4.0 KiB [ ] lower
4.0 KiB [ ] link
0.0 B [ ] committed