Failed to bind DNS

Vinay_Joseph — Tue, 14 Jun 2022 02:31:16 GMT

I am trying to run Nifi in a docker container on an EC2 instance. However, whenever my container starts I am seeing the following error.

2022-06-14 02:23:51,093 WARN [main] org.apache.nifi.web.server.JettyServer Failed to start web server... shutting down.
java.io.IOException: Failed to bind to ec2-xx-xx-xx-xx.us-east-2.compute.amazonaws.com/xx.xx.xx.xx:8082
at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:349)
at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:310)
at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:234)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.server.Server.doStart(Server.java:401)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:1008)
at org.apache.nifi.NiFi.<init>(NiFi.java:170)
at org.apache.nifi.NiFi.<init>(NiFi.java:82)
at org.apache.nifi.NiFi.main(NiFi.java:330)
Caused by: java.net.BindException: Cannot assign requested address
at sun.nio.ch.Net.bind0(Native Method)

I have added the following in the nifi.properties file.

nifi.web.http.host=

nifi.web.http.port=

nifi.web.http.network.interface.default=

#############################################

nifi.web.https.host=ec2-xx-xx-xx-xx.us-east-2.compute.amazonaws.com

nifi.web.https.port=9443

at sun.nio.ch.Net.bind(Net.java:461)
at sun.nio.ch.Net.bind(Net.java:453)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:222)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:85)
at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:344)
... 10 common frames omitted

Re: Failed to bind DNS

ckumar — Tue, 14 Jun 2022 12:21:46 GMT

So java.net.BindException: Cannot assign requested address is an error occurred while attempting to bind a socket to provided hostname and port. Typically, the port is in use, or the requested hostname could not be assigned, Are you sure port is free and no issues with the hostname you are using ?

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Failed to bind DNS

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