Geeks, please accept the hero post of 2021 Microsoft x Intel hacking contest>>>

Today, the Ranger server, which has just been built, always reports errors when creating a container through UI

2016-04-1204:43:35,151ERROR[:][][][][ServiceReplay-1][i.c.p.e.e.i.ProcessEventListenerImpl]Unknownexceptionrunningprocess[instance.start:664]on[40]io.cattle.platform.eventing.exception.EventExecutionException:500ServerError:InternalServerError("failedtocreateendpoint26e0d91c-8cbc-4bbf-aee6-418c142ad335onnetworkbridge:iptablesfailed:iptables--wait-tnat-ADOCKER-pudp-d0/0--dport4500-jDNAT--to-destination172.17.0.5:4500!-idocker0:iptables:Nochain/target/matchbythatname.
(exitstatus1)")

But there’s no problem with creating a container from the command line

Google has been looking at the official issue for a long time, but it still hasn’t found out the reason

Reading newspapers is wrong because of iptables

My centos7 also has ipbtales installed and started

I couldn’t figure it out, but it was finally solved

Ha ha ha ~ ~ ~ ~ a sense of achievement is born

Here’s the solution

Because my iptales service was installed when docker was installed

So we just need to restart docker

Link: http://www.lxy520.net/2015/09/24/centos-7-docker-qi-dong-bao/