docker学习笔记之七：解决 -i docker0: iptables: No chain/target/match by that name.

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启动容器时，有可能会遇到如下问题，比如启动redis容器：

sudo docker run -d -p 6379:6379 --name redis redis:latest

docker: Error response from daemon: failed to create endpoint redis on network bridge: iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 10.211.55.9 --dport 6379 -j DNAT --to-destination 172.17.0.4:6379 ! -i docker0: iptables: No chain/target/match by that name.
 (exit status 1).

 

通过分析异常信息，发现是因为在进行原地址到目标地址转换的时候没有在docker主机的iptables规则中找到nat表规则，只有filter表规则。

 

在filter表上面增加nat表配置规则信息，需要说明的是docker容器的网段是172.17.0.0/16，另外需要注意filter表中也要有docker链的相关配置。

sudo vi /etc/sysconfig/iptables

1. # sample configuration for iptables service
   # you can edit this manually or use system-config-firewall
   # please do not ask us to add additional ports/services to this default configuration
   *nat
   :PREROUTING ACCEPT [27:11935]
   :INPUT ACCEPT [0:0]
   :OUTPUT ACCEPT [0:0]
   :POSTROUTING ACCEPT [0:0]
   :DOCKER -[0:0]
   -A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER
   -A OUTPUT !-d 127.0.0.0/8-m addrtype --dst-type LOCAL -j DOCKER
   -A POSTROUTING -s 172.17.0.0/16!-o docker0 -j MASQUERADE
   COMMIT
   #
   *filter
   :INPUT ACCEPT [0:0]
   :FORWARD ACCEPT [0:0]
   :OUTPUT ACCEPT [0:0]
   :DOCKER -[0:0]
   -A FORWARD -o docker0 -j DOCKER
   -A FORWARD -o docker0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
   -A FORWARD -i docker0 !-o docker0 -j ACCEPT
   -A FORWARD -i docker0 -o docker0 -j ACCEPT
   -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
   -A INPUT -p icmp -j ACCEPT
   -A INPUT -i lo -j ACCEPT
   -A INPUT -p tcp -m state --state NEW -m tcp --dport 22-j ACCEPT
   -A INPUT -p tcp -m state --state NEW -m tcp --dport 9090-j ACCEPT
   -A INPUT -p tcp -m state --state NEW -m tcp --dport 1521-j ACCEPT
   -A INPUT -p tcp -m state --state NEW -m tcp --dport 6379-j ACCEPT
   -A INPUT -j REJECT --reject-with icmp-host-prohibited
   -A FORWARD -j REJECT --reject-with icmp-host-prohibited
   COMMIT

    

重启iptables

sudo systemctl restart iptables.service 

 

重新启动容器即可。