SSH authentication or connection failure message received when trying to discover linux servers that are not connected through centrify

notaguru
Tera Contributor

‎04-17-2018 12:41 PM

I am running discovery and i am able to successfully discovery linux servers that are connected through centrify however any server not connected through centrify i am getting an error SSH authentication or connection failure.  If i try to SSH into the server using putty i can connect fine.  Unix team has also created a local admin account but i am still not able to discover.  Thoughts?

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tim_broberg
ServiceNow Employee
ServiceNow Employee

‎04-17-2018 03:33 PM

Ok, so you can connect to the server with Putty, that's good. So we know the port is open, sshd is listening, and we know a credential that works.

Next steps:

  1. Can you connect with Putty from the mid server?
  2. Is the credential you're using a password or a public key credential? If it's public key, putty keeps its keys in a different format, and you will need to export them to the openssh format.
  3. You can set the mid server attribute mid.ssh.debug = true, then look in the agent log to see piles of debug information.
    1. Does it get past the kexinit exchange where algorithm are negotiated?
    2. Does it fail in userauth?

If you get to the debug logs, you may require some help as they're pretty confusing.

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