I logged in to the Master server and sudo (sudo -su <user>) to the user running the Jenkins war file. I ran the ssh command to connect to each of the Jenkins Agent machines and had no issue connecting. I did this with both the machine name and the fully qualified domain name (e.g. machine1, and machine1.company-name.com). From what I could see the ssh ~/.ssh/known_hosts file contained valid information on the Agent machines and had correct permissions of 644.
On the Jenkins Master, I went to the Nodes, Agent, Configure page and switched from the "Known hosts file Verification Strategy" to the "Manually trusted key Verification Strategy" then brought the Agents online with no issues. I then switched the Agent configuration back to the "Known hosts file Verification Strategy", took the Agents offline and brought them back online again with no issues. I looked at the time stamp on the ~/.ssh/known_hosts file and verified its contents hadn't changed. Its almost as if the known_hosts file being checked isn't the file for the user id executing the Jenkins war file. Either way, this is an issue that needs to be addressed sooner rather than later. > -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/49069de1-61ee-453c-9d5d-03977fca16a3%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
