SSH Plugin - "Cannot Connect to server" but credentials are correct.

[Tim Myerscough]

Hi,

I'm trying to connect to a Mac from a Jenkins 1.558 instance running on Windows 7 using the SSH plugin.

I am getting the following log messages:

Jul 21, 2014 10:21:39 AM org.jvnet.hudson.plugins.SSHBuildWrapper$DescriptorImpl doLoginCheck

SEVERE: Auth fail

Jul 21, 2014 10:21:39 AM org.jvnet.hudson.plugins.SSHBuildWrapper$DescriptorImpl doLoginCheck

SEVERE: Can't connect to server

The server hostname/username/password are configured correctly. I have verified connection from a command line SSH using PUTTY on the Jenkins machine as well as an alternate machine using username/password authentication.

On the remote machine, I receive the following error message:

Jul 21 10:31:49 XXXX sshd[36671]: error: Received disconnect from XX.XX.XX.XX: 3: com.jcraft.jsch.JSchException: Auth fail [preauth]

How can I investigate this further?

Thanks

Tim

[Tim Myerscough]

I've found a solution by configuring an SSH Keyfile.

Has anyone else experienced issues with username/password authentication issues with the SSH Plugin?

[Stephen Connolly]

Does the password contain any non-ASCII (i.e. outside the range 32-127) characters?

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[Tim Myerscough]

No, all characters are within the ASCII range.

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Tim Myerscough || Senior Consultant
Permeance Technologies

T: +61 08 6317 0299
E: tim.mye...@permeance.com.au || W: www.permeance.com.au

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[Stephen Connolly]

Unless the server key is larger than 2048 bits... that could cause issues if you don't have unlimited strength JCA installed... but I have not spent much time looking at the JSch based SSH connectors