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：

vi /etc/sysctl.conf

添加如下内容:

net.bridge.bridge-nf-call-ip6tables = 1

net.bridge.bridge-nf-call-iptables = 1

最后再执行:

sysctl -p

再次执行：docker info告警消失。