Docker [Warning] IPv4 forwarding is disabled解决办法
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在创建一个dockerfile，执行yum 安装时报出如下错误，
Step 3/8 : RUN yum install httpd -y
---> [Warning] IPv4 forwarding is disabled. Networking will not work.
---> Running in 9b62fa0252b1解决办法
1.编辑 vim /etc/sysctl.conf配置文件，在最后面添加
net.ipv4.ip_forward=1
2.重启网络服务
service network restart
此时再次重新创建问题就解决了。
Step 3/8 : RUN yum install httpd -y
---> Running in 3b8b0d4962be
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