question Re: Exception in implementing NiFi site-to-site protocol. in Archives of Support Questions (Read Only)

Exception in implementing NiFi site-to-site protocol.

mpandit — Tue, 21 Apr 2026 12:30:31 GMT

2016-06-23 17:00:36,333 ERROR [Timer-Driven Process Thread-3] o.a.nifi.remote.StandardRemoteGroupPort RemoteGroupPort[name=Remote Connection,target=http://host:7090/nifi] failed to communicate with http://host:7090/nifi due to java.net.SocketTimeoutException. I can access the target nifi instance with no issues.

Re: Exception in implementing NiFi site-to-site protocol.

JoeWitt — Fri, 24 Jun 2016 04:40:44 GMT

Have you had a chance to enable the site to site port on the receiving system (well both systems really)?

http://docs.hortonworks.com/HDPDocuments/HDF1/HDF-1.2/bk_AdminGuide/content/system_properties.html

Take a look at the "Site to Site Properties" section.

Re: Exception in implementing NiFi site-to-site protocol.

jgeorge — Fri, 24 Jun 2016 04:45:51 GMT

Hi,

Can you check if you have these properties set properly on both nodes?

nifi.remote.input.socket.host={host}

nifi.remote.input.socket.port={port}

nifi.remote.input.secure={false/true}

Thanks

Re: Exception in implementing NiFi site-to-site protocol.

mpandit — Fri, 24 Jun 2016 05:18:09 GMT

Got it resolved the issue is firewall on remote machine. I had to disable the firewall to make it work.( service iptables stop).

Re: Exception in implementing NiFi site-to-site protocol.

shrikantjadhav2 — Mon, 23 Oct 2017 19:45:12 GMT

Hi,

If Firewall is disabled and still you get same issue, then add ip and host name in /etc/hosts file for ubuntu system.

My issue was resolved after adding host details in /etc/hosts file