一：docker 查看容器占用磁盘大小
docker 查看容器占用磁盘大小
root@pack:/data# docker system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 162 43 1.035TB 1.013TB (97%)
Containers 87 39 237.8GB 119.1GB (50%)
Local Volumes 1 1 17.08kB 0B (0%)
Build Cache 0 0 0B 0B
root@pack:/data#
查看 每个 image、container 详细大小：docker system df -v
二：docker 容器开启ssh
docker 容器开启ssh
启动sshd:
# /usr/sbin/sshd -D &
正常启动需要pid文件存在，可以创建/var/run/sshd
这时报以下错误：
[root@ b5926410fe60 /]# /usr/sbin/sshd
在密码正确的时候，SSH登录提示报错
Permission denied, please try again.
进入登录调试模式
debug1: Next authentication method: password
debug1: Authentications that can continue: publickey,password
Permission denied, please try again.
原因：ubuntu配置SSDH的问题
解决，修改配置，允许root登录，重启SSH
root@d4f098015c48:~# grep Root /etc/ssh/sshd_config
PermitRootLogin prohibit-password # prohibit-password 修改为：Yes
the setting of "PermitRootLogin without-password".
root@d4f098015c48:~# cat /etc/issue
Ubuntu 16.04.6 LTS l
root@d4f098015c48:~# vi /etc/ssh/sshd_config
root@d4f098015c48:~# which sshd
/usr/sbin/sshd
root@d4f098015c48:~# ps -ef|grep sshd
root 39 0 0 10:36 ? 00:00:00 /usr/sbin/sshd
root 105 52 0 13:05 pts/1 00:00:00 grep --color=auto sshd
root@d4f098015c48:~# kill -9 39
root@d4f098015c48:~# ps -ef|grep sshd
root@d4f098015c48:~# /usr/sbin/sshd
root@d4f098015c48:~# ps -ef|grep sshd
root 109 0 0 13:05 ? 00:00:00 /usr/sbin/sshd
root 111 52 0 13:05 pts/1 00:00:00 grep --color=auto ssh
