A few day ago when I was upgrading some of my servers, I notice that Zentyal was showing as being up to date in the dashboard, but there was also an alert in the dashboard that said that the server was missing an security update. When I logged into it over SSH and tried to manually install updated, I encountered the following error message.
A few months ago, I switch from a Windows-based Active Directory environment and switch to a Linux alternative called Zentyal. And so far, everything works great. I was able to recreate my AD structure and recreate new group policies based on the ones from my old install.