Some of my checks are in a perpetually pending state.
Even when I force a check, nothing happens.
when I force the check, i sometimes see in the log
[1531367787] EXTERNAL COMMAND: SCHEDULE_FORCED_HOST_SVC_CHECKS;xxxxxxx;1531367811
but nothing else pertaining to that host.
My config:
https://support.nagios.com/forum/viewtopic.php?f=7&t=49214#p255589