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Agent fails to connect to an SFTP server and Algorithm Negotiation Fail error is displayed
Article ID: 87554
Updated On:
Products
CA Automic Workload Automation - Automation Engine
Issue/Introduction
Error Message :
Algorithm negotiation fail
com.uc4.ftpjob.DataTransferException: Connection exception.
Caused by: com.jcraft.jsch.JSchException: Algorithm negotiation fail
Algorithm negotiation fail
com.uc4.ftpjob.DataTransferException: Connection exception.
Caused by: com.jcraft.jsch.JSchException: Algorithm negotiation fail
RA FTP agent fails to connect to an SFTP server due to a missing key negotiation algorithm.
Investigation
2016-11-16 21:00:22 Using hosts file = /home/users/uc4/.ssh/known_hosts
Algorithm negotiation fail
com.uc4.ftpjob.DataTransferException: Connection exception.
at com.uc4.transfer.CITSFTPImpl.<init>(CITSFTPImpl.java:150)
at com.uc4.ftpjob.connections.ConnectionFactory$1.run(ConnectionFactory.java:61)
at java.lang.Thread.run(Thread.java:662)
Caused by: com.jcraft.jsch.JSchException: Algorithm negotiation fail
at com.jcraft.jsch.Session.receive_kexinit(Session.java:552)
at com.jcraft.jsch.Session.connect(Session.java:299)
at com.jcraft.jsch.Session.connect(Session.java:162)
at com.uc4.transfer.CITSFTPImpl.<init>(CITSFTPImpl.java:137)
... 2 more
2016-11-16 21:00:22 Command aborted with error message: Connection exception. Algorithm negotiation fail.
Algorithm negotiation fail
com.uc4.ftpjob.DataTransferException: Connection exception.
at com.uc4.transfer.CITSFTPImpl.<init>(CITSFTPImpl.java:150)
at com.uc4.ftpjob.connections.ConnectionFactory$1.run(ConnectionFactory.java:61)
at java.lang.Thread.run(Thread.java:662)
Caused by: com.jcraft.jsch.JSchException: Algorithm negotiation fail
at com.jcraft.jsch.Session.receive_kexinit(Session.java:552)
at com.jcraft.jsch.Session.connect(Session.java:299)
at com.jcraft.jsch.Session.connect(Session.java:162)
at com.uc4.transfer.CITSFTPImpl.<init>(CITSFTPImpl.java:137)
... 2 more
2016-11-16 21:00:22 Command aborted with error message: Connection exception. Algorithm negotiation fail.
Cause
Cause type:
Defect
Root Cause: RA FTP agent failed to connect to an SFTP server due to a missing key negotiation algorithm.
Defect
Root Cause: RA FTP agent failed to connect to an SFTP server due to a missing key negotiation algorithm.
Environment
Release: AOMBOA99000-3.0-Automic-Operations Manager-Business Objects Agent
Component:
Component:
Resolution
This field was added on 30/03/2017. This article has not been updated yet. Refer to the "Description" or "Workaround" sections for solution information.
Fix Status: Released
Fix Version(s):
RA FTP 3.1.5 HF1 - Available
Fix Status: Released
Fix Version(s):
RA FTP 3.1.5 HF1 - Available
Additional Information
Workaround :
N/ASOLUTIONThe problem was fixed by updating the ssh library JSCH to the latest version 1.53 that supports the missing diffie-hellman-group14 key negotiation algorithm.Upgrade to RA FTP solution version 3.1.5 HF1 and install the Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files.
N/ASOLUTIONThe problem was fixed by updating the ssh library JSCH to the latest version 1.53 that supports the missing diffie-hellman-group14 key negotiation algorithm.Upgrade to RA FTP solution version 3.1.5 HF1 and install the Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files.
Feedback
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