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https://issues.apache.org/jira/browse/NIFI-5764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16677574#comment-16677574
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Koji Kawamura commented on NIFI-5764:
-------------------------------------
[~dav] Thanks for sharing the dump. But I couldn't find any SFTP related thread
in it.
> It is something annoying because some SFTPList processors works fine other
> not, but in random way.
Do you see the ListSFTP processor instance works fine for sometime, but
encounter the auth failure issue some other times against the same SFTP server
without changing any ListSFTP configuration?
Do you have access to the SFTP server to see any error happened?
Did you confirm 'controlmaster' is the only difference between NiFi and the
command you used? Did you perform ssh command without controlmaster option and
if so, did it fail?? I mean:
{code}
# While NiFi ListSFTP is failing, following command works.
sftp -o “controlmaster auto” username@sftp_server
# Then without controlmaster option, does the command fail?
sftp username@sftp_server
{code}
> Allow ListSftp connection parameter
> -----------------------------------
>
> Key: NIFI-5764
> URL: https://issues.apache.org/jira/browse/NIFI-5764
> Project: Apache NiFi
> Issue Type: Wish
> Components: Extensions
> Affects Versions: 1.6.0
> Reporter: dav
> Priority: Critical
> Labels: SFTP, customization, sftp
> Attachments: dumpone
>
>
> ListSftp and other Sftp processors should be able to add parameters
> (like [-B buffer_size] [-b batchfile] [-c cipher]
> [-D sftp_server_path] [-F ssh_config] [-i identity_file] [-l limit]
> [-o ssh_option] [-P port] [-R num_requests] [-S program]
> [-s subsystem | sftp_server] host
> sftp [user@]host[:file ...]
> sftp [user@]host[:dir[/]]
> sftp -b batchfile [user@]host)
> in order to edit the type of connection on Sftp Server.
> For instance, I have this error on nifi:
> 2018-10-29 11:06:09,462 ERROR [Timer-Driven Process Thread-5]
> SimpleProcessLogger.java:254
> ListSFTP[id=766ac418-27ce-335a-5b13-52abe3495592] Failed to perform listing
> on remote host due to java.io.IOException: Failed to obtain connection to
> remote host due to com.jcraft.jsch.JSchException: Auth fail: {}
> java.io.IOException: Failed to obtain connection to remote host due to
> com.jcraft.jsch.JSchException: Auth fail
> at
> org.apache.nifi.processors.standard.util.SFTPTransfer.getChannel(SFTPTransfer.java:468)
> at
> org.apache.nifi.processors.standard.util.SFTPTransfer.getListing(SFTPTransfer.java:192)
> at
> org.apache.nifi.processors.standard.util.SFTPTransfer.getListing(SFTPTransfer.java:156)
> at
> org.apache.nifi.processors.standard.ListFileTransfer.performListing(ListFileTransfer.java:105)
> at
> org.apache.nifi.processor.util.list.AbstractListProcessor.onTrigger(AbstractListProcessor.java:401)
> at
> org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
> at
> org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1147)
> at
> org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:175)
> at
> org.apache.nifi.controller.scheduling.QuartzSchedulingAgent$2.run(QuartzSchedulingAgent.java:140)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> 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: Auth fail
> at com.jcraft.jsch.Session.connect(Session.java:519)
> at com.jcraft.jsch.Session.connect(Session.java:183)
> at
> org.apache.nifi.processors.standard.util.SFTPTransfer.getChannel(SFTPTransfer.java:448)
> ... 15 common frames omitted
> This can be avoided by connect to Sftp server with this string:
> *sftp -o “controlmaster auto” username@sftp_server*
>
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