SSH Connection [AUTH FAIL]

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1

Hi Team
Recently an domain migration has happened.It changed from x to y.
When i try to check ssh connection getting auth fail.Error is pasted below
jenkins.plugins.publish_over.BapPublisherException: Failed to connect and initialize SSH connection. Message: [Failed to connect session for config [badlavserverUAT]. Message [Auth fail]].
Note: Telnet is able to reach from jenkins server to destination server.
2.ssh is configured using username and passoword.

Please help with any solution .Thanks

2

Hello Tharun,

Does the ssh connection work from a terminal?

3

Getting this error ssh -p 22 user@host
Permission denied (publickey,keyboard-interactive).

4

Are you using a key to log in (I guess so)?
Could you try to specify the key to use in order to login?
Something like:

ssh -i deployment_key.txt -p 22 user@host
5

I would recommend looking at the logs of the ssh server to see why it’s failing.

6

Same issue.

SSH connect work from terminal but Jenkins can’t connect

  • there are 2 containers in docker compose:
    • jenkins
    • remote_host
  • there are 2 keys:
    • id_rsa3
    • id_rsa3.pub
  • when connect to jenkins container via:
    • docker exec -it jenkins bash
      and try:
    • ssh -i id_rsa3 a12@remote_host → it can connect without password
  • but when I configure same Jenkins SSH with this id_rsa3:
    • Can’t connect to server

SSH was generate by: ssh-keygen -t rsa -m PEM -f id_rsa3
LOGS from Jenkins show → Auth fail and Can’t connect to server

7

would still recommend looking at the sshd logs on the target server. They’ll tell you a lot about why a login request was rejected. Its likely you pasted the wrong ssh keys into credentials

1 Like
8

True. This advide was very helpfull. When I check remote_host logs I saw: “key type ssh-rsa not in PubkeyAcceptedAlgorithms”. After I create ssh-key in this way: ssh-keygen -t ecdsa -m PEM -f id_rsa3 - connect started working.
Looks like the issue was related to this topic: Ubuntu 22.04 SSH the RSA key isn’t working since upgrading from 20.04.