Centos 7 docker 启动容器 iptables 报 No chain/target/match by that name

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启动一个有 nat 映射端口的容器时，iptables 报 No chain/target/match by that name

Shell

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docker run -d -p 2181:2181 -p 2888:2888 -p 3888:3888 garland/zookeeper Error response from daemon: Cannot start container 565c06efde6cd4411e2596ef3d726817c58dd777bc5fd13762e0c34d86076b9e: iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport 3888 -j DNAT --to-destination 192.168.42.11:3888 ! -i docker0: iptables: No chain/target/match by that name

找了N多网站和官方issue后，还是没找到真正的解决方法，网上到处转载的只是分析了原因，并没有明确的解决方案，为此与同事通宵加班终于解决了这个问题。找到系统的

/etc/sysconfig/iptables

，如果没有用以下命令保存一下,然后查看里边的内容Shell

1 2	iptables-save > /etc/sysconfig/iptables cat /etc/sysconfig/iptables

发现内容如下

Shell

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*filter:INPUT ACCEPT [0:0]:FORWARD ACCEPT [0:0]:OUTPUT ACCEPT [0:0] -N whitelist-A whitelist -s 192.168.42.0/24 -j ACCEPT#syn-N syn-flood-A INPUT -p tcp --syn -j syn-flood-I syn-flood -p tcp -m limit --limit 3/s --limit-burst 6 -j RETURN-A syn-flood -j REJECT#DOS-A INPUT -i eth0 -p tcp --syn -m connlimit --connlimit-above 15 -j DROP-A INPUT -p tcp -m state --state ESTABLISHED,RELATED -j ACCEPT## 省略一些简单的防火墙规则

查看启动容器的报错信息发现

-A DOCKER

DOCKER链，但在iptables文件里并没有找到，由于之前在自己的系统(archlinux)学习使用docker时并没遇到这问题，所以马上去看了下自己系统里的iptables的文件，内容如下Shell

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*nat :PREROUTING ACCEPT [27:11935] :INPUT ACCEPT [0:0] :OUTPUT ACCEPT [598:57368] :POSTROUTING ACCEPT [591:57092] :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 -A POSTROUTING -s 172.17.0.3/32 -d 172.17.0.3/32 -p tcp -m tcp --dport 1521 -j MASQUERADE -A POSTROUTING -s 172.17.0.3/32 -d 172.17.0.3/32 -p tcp -m tcp --dport 22 -j MASQUERADE -A DOCKER ! -i docker0 -p tcp -m tcp --dport 49161 -j DNAT --to-destination 172.17.0.3:1521 -A DOCKER ! -i docker0 -p tcp -m tcp --dport 49160 -j DNAT --to-destination 172.17.0.3:22 COMMIT # Completed on Sun Sep 20 17:35:31 2015 # Generated by iptables-save v1.4.21 on Sun Sep 20 17:35:31 2015 *filter :INPUT ACCEPT [139291:461018923] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [127386:5251162] :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 DOCKER -d 172.17.0.3/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 1521 -j ACCEPT -A DOCKER -d 172.17.0.3/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 22 -j ACCEPT COMMIT # Completed on Sun Sep 20 17:35:31 2015

对比后以去掉不相关的规则，以现

*nat

规则里有以下的对于docker的配置

Shell

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*nat:PREROUTING ACCEPT [27:11935]:INPUT ACCEPT [0:0]:OUTPUT ACCEPT [598:57368]:POSTROUTING ACCEPT [591:57092]:DOCKER - [0:0]-A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER-A POSTROUTING -s 172.17.0.0/16 ! -o docker0 -j MASQUERADECOMMIT

*filter

规则里对docker的配置如下Shell

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*filter :INPUT ACCEPT [139291:461018923] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [127386:5251162] :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 COMMIT

去掉不相关规则后的配置文件如下(可以直接用)：

Shell

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*nat:PREROUTING ACCEPT [27:11935]:INPUT ACCEPT [0:0]:OUTPUT ACCEPT [598:57368]:POSTROUTING ACCEPT [591:57092]: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 MASQUERADECOMMIT # Completed on Sun Sep 20 17:35:31 2015# Generated by iptables-save v1.4.21 on Sun Sep 20 17:35:31 2015*filter:INPUT ACCEPT [139291:461018923]:FORWARD ACCEPT [0:0]:OUTPUT ACCEPT [127386:5251162]: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 ACCEPTCOMMIT # Completed on Sun Sep 20 17:35:31 2015

然后再加上自己服务器的过滤规则，合并后覆盖到Centos 7的

/etc/sysconfig/iptables

文件重启iptables 服务Shell

1	systemctl restart iptables.service

两次启动对应docker容器，

Shell

1	docker run -d -p 2181:2181 -p 2888:2888 -p 3888:3888 garland/zookeeper

发现容器启动成功，虽然有警告，但并不影响容器的使用