使用docker时出现WARNING: IPv4 forwarding is disabled. Networking will not work.

缺乏、安全感 2022-12-31 01:16 133阅读 0赞

用了很长一段时间的redis突然连不上了，使用docker exec -it xxx /bin/bash进入docker中安装的redis应用时出现WARNING: IPv4 forwarding is disabled. Networking will not work.，重新run一个镜像时也会出现此错误，目前已知解决办法是修改00-system.conf添加ipv4配置来进行解决.

修改前的配置内容如下：

[root@localhost ~]# cat /usr/lib/sysctl.d/00-system.conf
    	# Kernel sysctl configuration file
    	#
    	# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
    	# sysctl.conf(5) for more details.
    	
    	# Disable netfilter on bridges.
    	net.bridge.bridge-nf-call-ip6tables = 0
    	net.bridge.bridge-nf-call-iptables = 0
    	net.bridge.bridge-nf-call-arptables = 0

1、加入ipv4配置：

[root@localhost ~]# echo "net.ipv4.ip_forward=1" >>/usr/lib/sysctl.d/00-system.conf

2、重启网络和docker：

[root@localhost ~]# systemctl restart network && systemctl restart docker

> 注意：执行以上命令将会重启docker，docker中的所有服务将会停机。

3、重启docker中的应用即可成功连接使用了  
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