[root@server1 ~]# docker run -it --name vm1 ubuntu
WARNING: IPv4 forwarding is disabled. Networking will not work.
root@edb4ef9b0bcf:/# ls
bin dev home lib64 mnt proc run srv tmp var
boot etc lib media opt root sbin sys usr
解決方法:
[root@server1 sysctl.d]# cd /usr/lib/sysctl.d/
[root@server1 sysctl.d]# ls
00-system.conf 50-default.conf
[root@server1 sysctl.d]# vim 00-system.conf
net.ipv4.ip_forword=1
[root@server1 sysctl.d]# systemctl restart network
[root@server1 sysctl.d]# systemctl restart docker.service