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Problems with sFTP connection

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I already opened a post for this but don't see it on the forum. Sorry if this is duplicate.


Hello,


Have an issue with one of our clients. They are using "Spoon"-Client from Pentaho Data Integration (PDI) version 4.2.0.


They connect to out FTP automatically every five minutes to upload files. If there are no files to upload, on the third connection they receive the following error:

INFO 16-12 12:34:43,049 - SFTP_PUT - Opened SFTP connection to server revolutionupload.statpro.com on port 22 with username FTP_HANSAINV ERROR 16-12 12:34:44,631 - SFTP_PUT - Error while trying to send files.
Exception :
com.jcraft.jsch.JSchException: Auth fail Auth fail



They are then able to connect again manually, upload files. However, the error will again return. Seems to be related to connecting multiple times without transfer files. However, the error seems to relate to an authentication problem. Although they are to connect manually so it’s not a host, username or password problem. Below is a longer capture of the error:

ERROR 14-01 10:31:14,136 - SFTP_PUT - Error while trying to send files.
Exception :
com.jcraft.jsch.JSchException: Auth fail Auth fail

ERROR 14-01 10:31:14,136 - SFTP_PUT -
org.pentaho.di.core.exception.KettleJobException:
com.jcraft.jsch.JSchException: Auth fail Auth fail

at org.pentaho.di.job.entries.sftp.SFTPClient.login
(SFTPClient.java:154)
at org.pentaho.di.job.entries.sftpput.JobEntrySFTPPUT.execute
(JobEntrySFTPPUT.java:734)
at org.pentaho.di.job.Job.execute(Job.java:503)
at org.pentaho.di.job.Job.execute(Job.java:642)
at org.pentaho.di.job.Job.execute(Job.java:642)
at org.pentaho.di.job.Job.execute(Job.java:420)
at org.pentaho.di.job.entries.job.JobEntryJobRunner.run
(JobEntryJobRunner.java:63)
at java.lang.Thread.run(Unknown Source) Caused by: com.jcraft.jsch.JSchException: Auth fail
at com.jcraft.jsch.Session.connect(Session.java:461)
at com.jcraft.jsch.Session.connect(Session.java:154)
at org.pentaho.di.job.entries.sftp.SFTPClient.login
(SFTPClient.java:149)
... 7 more


Any help, or insight would be great.


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