Upstream bug assigned to aruzicka
Moving this bug to POST for triage into Satellite 6 since the upstream issue http://projects.theforeman.org/issues/20018 has been resolved.
UPDATED HOTFIX INSTRUCTIONS FOR SATELLITE 6.2 AND CAPSULE: On Satellite Server: 1) Upgrade package net-ssh: yum upgrade http://people.redhat.com/~lzapleta/hotfix/ssh-zombie-1485297/sat-6.2/tfm-rubygem-net-ssh-4.0.1-2.el7sat.noarch.rpm http://people.redhat.com/~lzapleta/hotfix/ssh-zombie-1485297/sat-6.2/tfm-rubygem-net-ssh-doc-4.0.1-2.el7sat.noarch.rpm 2) Check for all running tasks via Monitor - Tasks, there should be only two running tasks left. Wait if there is long queue (e.g. regular syncs or promotions). 3) Restart foreman-task and foreman-proxy service systemctl restart foreman-tasks foreman-proxy 4) Check tasks in Monitor - Tasks. Kill zombie processes if necessary On each Satellite Capsule with ReX capability enabled: Perform steps (1), (2) 3) Restart proxy: systemctl restart foreman-proxy AFTER UPGRADE Perform Remote Execution harmless test on multiple hosts. ROLLBACK INSTRUCTIONS Downgrade tfm-rubygem-net-ssh and tfm-rubygem-net-ssh-doc to previous version and restart services. NOTES There is also a hotfix for non-scl package which I believe is not used, but publishing the build as well just for sure: http://people.redhat.com/~lzapleta/hotfix/ssh-zombie-1485297/sat-6.2/non-scl/
UPDATE: Only upgrade tfm-rubygem-net-ssh package the tfm-rubygem-net-ssh-doc subpackage is not needed when not installed. If you attempt to install the -doc subpackage be prepared to pull some extra dependencies from rhel-server-rhscl-7-rpms repo.
This is resolved in Satellite 6.3. If you have upgraded and are still seeing this issue, please feel free to re-open and provide additional information about the issue.