[JIRA] (JENKINS-56969) Unable to connect to slave via ssh

[nicks9...@gmail.com (JIRA)]

Title: Message Title

Nicketa Kumar created an issue   Jenkins / JENKINS-56969 Unable to connect to slave via ssh Issue Type: Bug Assignee: Matt Sicker Attachments: slave-screenshot.JPG, slave.log, slave.log.1, slave.log.10, slave.log.2, slave.log.3, slave.log.4, slave.log.5, slave.log.6, slave.log.7, slave.log.8, slave.log.9 Components: ssh-agent-plugin, ssh-credentials-plugin, ssh-plugin, ssh-slaves-plugin Created: 2019-04-11 10:45 Environment: Jenkins Jenkins ver. 2.164.2 Plugins: * ssh 2.6.1 * ssh-agent 1.17 * ssh-credentials 1.15 * ssh-slaves 1.29.4 Master: OS: Amazon Linux 2 AMI (HVM), SSD Volume Type - ami-0889b8a448de4fc44 Java: openjdk version "1.8.0_201" Slave: Ubuntu Server 18.04 LTS (HVM), SSD Volume Type - ami-007d5db58754fa284 Java: openjdk version "10.0.2" 2018-07-17 Labels: slave Priority: Major Reporter: Nicketa Kumar My Jenkins exists on Amazon EC2 engine.  I'm trying to add ubuntu slave via ssh. While creating an instance, a <filename>.pem file is generated for storing .ssh keys which is a private key. No separate pub ssh key is there.  I can ssh directly from my master to slave and vice versa using that key file ssh -i "/home/ubuntu/.ssh/scarlet.pem" ec2-u...@ec2-52-66-241-52.ap-south-1.compute.amazonaws.com ssh i "/home/ec2user/.ssh/scarlet.pem" ubu...@ec2-52-66-241-52.ap-south-1.compute.amazonaws.com But when I try to configure my slave via any of the ssh method, it gives me error. How I've configured (one of the method)? I've saved slave machine credentials as "ssh key username with private key" Launch method: Launch agents via SSH Hostname: slave machine private ip address, as it is the hostname. Host Key Verification Strategy: Manually trusted key Verification Strategy Note: I cannot regenerate ssh keys as I'll not be able to access my machines again.  I cannot use credentials as username/password as either there is no password or I'm not that much linux expert. They only method offered in amazon.aws seems to be the ssh key I've tried everything whatever mentioned in other jenkins tickets for same issue or on internet, but my issue is not getting resolved. Please see attachment for log details. I'm literally blocked right now, need assistance asap. Add Comment   This message was sent by Atlassian Jira (v7.11.2#711002-sha1:fdc329d) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.