o.a.nifi.processors.standard.PutSFTP PutSFTP[id=e46aac15-0185-1000-0243-066468b818f4] Unable to transfer StandardFlowFileRecord[uuid=3a9e192c-7f34-48de-ace9-c144ac41e9d9,claim=StandardContentClaim [resourceClaim=StandardResourceClaim[id=1674478122732-215, container=default, section=215], offset=13832, length=62],offset=0,name=test.hl7,size=62] to remote host myhostname://test.net due to org.apache.nifi.processor.exception.ProcessException: IOException thrown from PutSFTP[id=e46aac15-0185-1000-0243-066468b818f4]: java.io.IOException: Failed to obtain connection to remote host due to com.jcraft.jsch.JSchException: java.net.UnknownHostException: myhostname://test.net: java.io.IOException: Failed to obtain connection to remote host due to com.jcraft.jsch.JSchException: java.net.UnknownHostException: myhostname://test.net; routing to failure: java.io.IOException: Failed to obtain connection to remote host due to com.jcraft.jsch.JSchException: java.net.UnknownHostException: myhostname://test.net java.io.IOException: Failed to obtain connection to remote host due to com.jcraft.jsch.JSchException: java.net.UnknownHostException: myhostname://test.net at org.apache.nifi.processors.standard.util.SFTPTransfer.getChannel(SFTPTransfer.java:515) at org.apache.nifi.processors.standard.util.SFTPTransfer.put(SFTPTransfer.java:597) at org.apache.nifi.processors.standard.PutFileTransfer$1.process(PutFileTransfer.java:130) at org.apache.nifi.controller.repository.StandardProcessSession.read(StandardProcessSession.java:2212) at org.apache.nifi.controller.repository.StandardProcessSession.read(StandardProcessSession.java:2180) at org.apache.nifi.processors.standard.PutFileTransfer.onTrigger(PutFileTransfer.java:122) at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27) at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1162) at org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:209) at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117) at org.apache.nifi.engine.FlowEngine$2.run(FlowEngine.java:110) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: com.jcraft.jsch.JSchException: java.net.UnknownHostException: myhostname://test.net at com.jcraft.jsch.Util.createSocket(Util.java:394) at com.jcraft.jsch.Session.connect(Session.java:215) at com.jcraft.jsch.Session.connect(Session.java:183)     at org.apache.nifi.processors.standard.util.SFTPTransfer.getChannel(SFTPTransfer.java:495) ... 17 common frames omitted Caused by: java.net.UnknownHostException: myhostname://test.net at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at java.net.Socket.connect(Socket.java:538) at java.net.Socket.<init>(Socket.java:434) at java.net.Socket.<init>(Socket.java:211) at com.jcraft.jsch.Util$1.run(Util.java:362) ... View more

Please see below comments..   ... View more

 I am having a simple flow where I am fetching the creds for SFTP from DB and then uploading a file using the putSFTP but I am getting UnknownHostException error on PutSFTP processor.   I see the creds are being fetched - I see them in logs and also tried connecting to the Server using FileZilla (creds are correct ..no space etc all good with that).. Also I tried hardcoding the creds in PutSFTP and still it did not work. can someone please guide me.. ... View more

Thank you. I will try out the suggested approach. ... View more

Can SFTP creds be dynamic? ... View more

Now my files are getting rolled on daily basis  But they are not getting deleted. <appender name="APP_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <!---<file>${org.apache.nifi.bootstrap.config.log.dir}/nifi-app.log</file>--> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <!-- For daily rollover, use 'app_%d.log'. For hourly rollover, use 'app_%d{yyyy-MM-dd_HH}.log'. To GZIP rolled files, replace '.log' with '.log.gz'. To ZIP rolled files, replace '.log' with '.log.zip'. --> <fileNamePattern>${org.apache.nifi.bootstrap.config.log.dir}/nifi-app_%d.log</fileNamePattern> <!-- keep 30 log files worth of history --> <maxHistory>1</maxHistory> </rollingPolicy> <immediateFlush>true</immediateFlush> <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder"> <pattern>%date %level [%thread] %logger{40} %msg%n</pattern> </encoder> </appender> ... View more

Thanks a lot for detailed solution.  ... View more