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

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

 

通过harbor搭建私有docker registry中报错。

[root@localhost harbor]# ./prepare 
prepare base dir is set to /usr/local/src/harbor
Unable to find image 'goharbor/prepare:v1.8.1' locally
v1.8.1: Pulling from goharbor/prepare
98567ebe879d: Pull complete 
d642a782e293: Pull complete 
cf233c8d5a07: Pull complete 
dfc5ad175a50: Pull complete 
bc51f9ffb51a: Pull complete 
2498a6ce9a1a: Pull complete 
93be64bef785: Pull complete 
Digest: sha256:49542e66f4969f23ef7e1c65119f7e5338da0ba5b9c56e6d1e0ff58d3bb8664f
Status: Downloaded newer image for goharbor/prepare:v1.8.1
WARNING: IPv4 forwarding is disabled. Networking will not work.
Clearing the configuration file: /config/log/logrotate.conf
Clearing the configuration file: /config/nginx/nginx.conf
Clearing the configuration file: /config/core/env

 解决方法：

解决办法：
# vim  /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