Hi Joe, On the sending side, do you have gbrdc00015n01 in your hosts file? Can you ping that node? Is the node that you are trying to send to a NiFi cluster or a standalone instance? I have often seen firewalls cause UnknownHostException to get thrown, as well, when using site-to-site, so please verify that you have no firewall blocking access.
Thanks -Mark > On May 31, 2016, at 9:14 AM, <[email protected]> > <[email protected]> wrote: > > Hi > > I’m new to Nifi. I have been experimenting with it and trying implement Site > to Site connections between different Nifi instances on a Windows box and a > Linux box. I configure a remote procedure group and it can see the names of > the input ports (somewhat confusingly named 9992 here) and can connect to > them but when I try to transfer a file I get an UnknownHostException. I have > set the properties in the nifi.properties thus: > > # Site to Site properties > nifi.remote.input.socket.host=gbrdc00015n01 > nifi.remote.input.socket.port=7354 > nifi.remote.input.secure=false > > # web properties # > nifi.web.war.directory=./lib > nifi.web.http.host=gbrdcr00015n01 > nifi.web.http.port=9995 > nifi.web.https.host= > nifi.web.https.port= > nifi.web.jetty.working.directory=./work/jetty > nifi.web.jetty.threads=200 > > Any help would be greatly appreciated. > > Thanks > Joe > > > 2016-05-31 11:24:11,002 ERROR [Timer-Driven Process Thread-6] > o.a.nifi.remote.StandardRemoteGroupPort > RemoteGroupPort[name=9992,target=http://gbrdcr00015n01:9995/nifi] > <http://gbrdcr00015n01:9995/nifi]> failed to communicate with > http://gbrdcr00015n01:9995/nifi <http://gbrdcr00015n01:9995/nifi> due to > java.net.UnknownHostException > 2016-05-31 11:24:11,002 ERROR [Timer-Driven Process Thread-6] > o.a.nifi.remote.StandardRemoteGroupPort > java.net.UnknownHostException: null > at sun.nio.ch.Net.translateException(Unknown Source) > ~[na:1.8.0_91] > at sun.nio.ch.SocketAdaptor.connect(Unknown Source) > ~[na:1.8.0_91] > at > org.apache.nifi.remote.client.socket.EndpointConnectionPool.establishSiteToSiteConnection(EndpointConnectionPool.java:712) > ~[nifi-site-to-site-client-0.6.1.jar:0.6.1] > at > org.apache.nifi.remote.client.socket.EndpointConnectionPool.establishSiteToSiteConnection(EndpointConnectionPool.java:685) > ~[nifi-site-to-site-client-0.6.1.jar:0.6.1] > at > org.apache.nifi.remote.client.socket.EndpointConnectionPool.getEndpointConnection(EndpointConnectionPool.java:301) > ~[nifi-site-to-site-client-0.6.1.jar:0.6.1] > at > org.apache.nifi.remote.client.socket.SocketClient.createTransaction(SocketClient.java:129) > ~[nifi-site-to-site-client-0.6.1.jar:0.6.1] > at > org.apache.nifi.remote.StandardRemoteGroupPort.onTrigger(StandardRemoteGroupPort.java:171) > ~[nifi-site-to-site-0.6.1.jar:0.6.1] > at > org.apache.nifi.controller.AbstractPort.onTrigger(AbstractPort.java:227) > [nifi-framework-core-api-0.6.1.jar:0.6.1] > at > org.apache.nifi.controller.tasks.ContinuallyRunConnectableTask.call(ContinuallyRunConnectableTask.java:81) > [nifi-framework-core-0.6.1.jar:0.6.1] > at > org.apache.nifi.controller.tasks.ContinuallyRunConnectableTask.call(ContinuallyRunConnectableTask.java:40) > [nifi-framework-core-0.6.1.jar:0.6.1] > at > org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:123) > [nifi-framework-core-0.6.1.jar:0.6.1] > at > java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) > [na:1.8.0_91] > at java.util.concurrent.FutureTask.runAndReset(Unknown > Source) [na:1.8.0_91] > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown > Source) [na:1.8.0_91] > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown > Source) [na:1.8.0_91] > at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown > Source) [na:1.8.0_91] > at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown > Source) [na:1.8.0_91] > at java.lang.Thread.run(Unknown Source) [na:1.8.0_91] > > > > > _______________________________________________ > > This message is for information purposes only, it is not a recommendation, > advice, offer or solicitation to buy or sell a product or service nor an > official confirmation of any transaction. It is directed at persons who are > professionals and is not intended for retail customer use. Intended for > recipient only. This message is subject to the terms at: > www.barclays.com/emaildisclaimer <http://www.barclays.com/emaildisclaimer>. > > For important disclosures, please see: > www.barclays.com/salesandtradingdisclaimer > <http://www.barclays.com/salesandtradingdisclaimer> regarding market > commentary from Barclays Sales and/or Trading, who are active market > participants; and in respect of Barclays Research, including disclosures > relating to specific issuers, please see http://publicresearch.barclays.com > <http://publicresearch.barclays.com/>. > > _______________________________________________ >
