docker启动WARNING:IPv4 forwarding is disabled. Networking will not work. 报错解决办法

centos 7 docker 启动了一个web服务 但是启动时 报

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

#需要做如下配置

解决办法:

vi /etc/sysctl.conf

net.ipv4.ip_forward=1  #添加这段代码

#重启network服务

systemctl restart network && systemctl restart docker

#查看是否修改成功 (备注:返回1,就是成功)

[root@docker-node2 ~]# sysctl net.ipv4.ip_forward
net.ipv4.ip_forward = 1

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