Connection to SSH Server

The current directory and other session information is not preserved between subsequent commands over the underlying SSH library, which might cause problems with the cd command. If that's not the issue, I'm afraid I cannot help you with this problem.

The code for the activity is also public on this GitHub repo so you can use it to debug the problem. https://github.com/sorincalin/UiPathTeam.SSHConnector.Activities

Hi Mauro,

Unfortunately I haven't tested your scenario and I'm not sure what problems could be encountered. I know for a fact (and is written in the docs) that it's best to send multiple commands at once, as the session between the Run Command activity is not kept. You could try that or you could try to write a shell script on the Linux Server (A) that runs the command on Linux Server (B) and get the output of the script, rather than sending multiple complex commands via the Run Command Activity.

Hope this helps,

Sorin

Hi Javier,

It seems that the server you are connecting to requires more than just the username and password. I found the following which I believe could solve your issue:

https://stackoverflow.com/questions/39071619/cannot-connect-to-mac-using-rencissh

The component I built is a simple wrapper over the SSH.NET library and if you'd need to change the code, you can find it publicly available here:

https://github.com/sorincalin/UiPathTeam.SSHConnector.Activities

Best regards,

Sorin

Hi Andres. Once installed the activities in the package should be visible under UiPathTeam -> SSHConnector -> Activities. There is nothing different from other activity packages, so if you followed the steps described below, all should work fine:

https://docs.uipath.com/studio/docs/managing-activities-packages#section-installing-packages

If you are still having troubles installing packages, please reach out to our technical support:

https://www.uipath.com/company/contact-us/contact-technical-support

Best regards,

Sorin

Hi,

You can find the documentation under the resources tab in the activity's page. Simply put inside the SSH Run Command activity the line/lines that you want to execute on the server where you connected as you would from a regular SSH console. Please note that if you want to run more commands, between the SSH Run Command calls, the context is not kept. See the section extracted from the documentation:

Multiple commands can be sent in a single call by separating them based on the server's operating system. For example on Unix systems:

"Command1 && Command2" - this will execute Command1 and will only execute Command2 if the former was successful 

"Command1; Command2" - this will execute Command1 and Command2 regardless of the result of Command1

Notes:

- in the SSH session, environment changes such as current directory will not be applied from one command to another. For such scenarios you will have to chain multiple commands as shown above.

Best regards,

Sorin

Hi,

You can switch from String to SecureString and vice-versa using the NetworkCredential class in .NET like in the following examples:

stringPassword = new System.Net.NetworkCredential("", secureStringPassword).Password

secureStringPassword = new System.Net.NetworkCredential("", stringPassword).SecurePassword

Regarding the output variable types, you can see for any activity the argument expected types by hovering with the mouse over them. In this case Error and Result are Strings and the ExitStatus is an Int.

I hope this helps.

Best regards,

Sorin

It seems there is an error that happens sometimes in the underlying library:

https://stackoverflow.com/questions/45898487/renci-sshnet-server-response-does-not-contain-ssh-protocol-identification

You might need to retry the connect part a few times. You can do that with some VB code as explained in the documentation which you can find under the resources tab. An extract from it:

// Creating the client and performing the connection

mySSHClient = New SshClient(host, user, pass)

mySSHClient.Connect()

// Now the client can be used in the SSH Run Command activity....

// The client is disconnected and disposed

mySSHClient.Disconnect()

mySSHClient.Dispose()

The code for the activity is also public on my GitHub repo:

https://github.com/sorincalin/UiPathTeam.SSHConnector.Activities

Hi,

The NetworkCredential solution is the way to go.

string password = new System.Net.NetworkCredential(string.Empty, securePassword).Password;

Are you sure you are getting the password as SecureString? What is the exact error you are getting.

Best regards,

Sorin

Hi Ranjani,

Apologies for the late reply. If the issue still persists, please elaborate a bit more about your scenario and problem as I'm not sure what you are referring to.

Best regards,

Sorin

I've tested it with 2018.3 and 2018.4 versions of Studio and for me it's working fine. Do you experience the same issue with other packages downloaded from Go! ?

I've tested it with 2018.3 and 2018.4 versions of Studio and for me it's working fine. Do you experience the same issue with other packages downloaded from Go! ?