执行docker info出现如下警告

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

解决办法:

[root@localhost ~]# vi /etc/sysctl.conf
添加以下内容:
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1

最后再执行

[root@localhost ~]# sysctl -p

此时docker info就看不到此报错了