解决Docker容器 iptables问题

Posted 2020-11-09

一、问题现象

最近在研究Docker容器日志管理时，启动容器出现iptables相关报错，具体问题如下

运行容器

[[email protected] ~]# docker run -d -p 24224:24224 -p 24224:24224/udp -v /data:/fluentd/log fluent/fluentd

出现如下报错

docker: Error response from daemon: driver failed programming external connectivity on endpoint quizzical_thompson (c2b238f6b003b1f789c989db0d789b4bf3284ff61152ba40dacd0e01bd984653):  (iptables failed: iptables --wait -t filter -A DOCKER ! -i docker0 -o docker0 -p tcp -d 172.17.0.3 --dport 24224 -j ACCEPT: iptables: No chain/target/match by that name.
 (exit status 1)).

二、解决办法

经过查阅资料得知是docker0网桥的原因，解决上面报错问题需要进行一下步骤
1.kill掉docker所有进程

[[email protected] ~]# pkill docker 

2.清空nat表的所有链

[[email protected] ~]# iptables -t nat -F

3.停止docker默认网桥docker0

[[email protected] ~]# ifconfig docker0 down

4.删除docker0网桥

[[email protected] ~]# brctl delbr docker0

5.重启docker服务

[[email protected] ~]# systemctl restart docker

至此，成功运行docker容器

[[email protected] ~]# docker run -d -p 24224:24224 -p 24224:24224/udp -v /data:/fluentd/log fluent/fluentd
644e43d03b9a2b30c062c8b5cde972b5514e6eef8a8ae95a6ab8c8004af6db5b