docker ： 报错 WARNING: IPv4 forwarding is disabled. Networking will not work.

[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# setenforce 0
[root@localhost ~]# systemctl start docker
[root@localhost ~]# docker images
REPOSITORY                     TAG                 IMAGE ID            CREATED             SIZE
hub.c.163.com/library/nginx    latest              db079554b4d2        10 hours ago        181.8 MB
hub.c.163.com/library/tomcat   latest              c822d296d232        3 weeks ago         355.2 MB

注意：创建容器的时候报这个错

[root@localhost ~]# docker run -ti -p 80:80 hub.c.163.com/library/nginx  /bin/bash
WARNING: IPv4 forwarding is disabled. Networking will not work.  

解决办法：

[root@localhost ~]# vi /usr/lib/sysctl.d/00-system.conf

添加如下代码：

    net.ipv4.ip_forward=1

重启network服务

# systemctl restart network

-------------------------------------

解决完成以后 删除掉 做错的 容器，再次创建  就可以了 ：

docker rm -f ea73dcb26ff5

本文转自 Mr_sheng 51CTO博客，原文链接:http://blog.51cto.com/sf1314/1980558