Another daemon for managing control groups
Another daemon for managing control groups
Posted Dec 17, 2013 19:23 UTC (Tue) by Jonno (guest, #49613)In reply to: Another daemon for managing control groups by hummassa
Parent article: Another daemon for managing control groups
> AFAICT the kernel dies and locks the machine out if PID 1 dies.
The kernel will panic if PID 1 exits on its own, but it will protect it from all outside interference (including blocking the normally unblockable SIGKILL and SIGSTOP), so as long as you handle all normal signals and never call exit() or return from main() you are golden.
The kernel will panic if PID 1 exits on its own, but it will protect it from all outside interference (including blocking the normally unblockable SIGKILL and SIGSTOP), so as long as you handle all normal signals and never call exit() or return from main() you are golden.
As noted above systemd will enter an infinite loop (always yielding it's time slot back to the scheduler as to not monopolize the CPU) in the signal handler for any error signal it can't handle more gracefully, but that is only to protect from internal bugs, and not a normal operational condition, which a dying cgmanager would be.