Re-Checks provide you with the ability to interrupt the regular check interval and force a manual check.
For example, if a Service Check runs every 15 minutes, you can use ‘Re-Check’
to force Opsview Monitor to run the Service Check/Host ‘now’, instead of
waiting for up to 15 minutes to elapse before the Service Check runs again.
Re-Checks can be
executed at a Host Group level (thus re-checking all Hosts (Host checks) and Service Checks within the Host Group), at a Host level (thus re-check the Host
(Host check) and all of its Service Checks) or at a Service Check level
(re-checking just the individual Service Check).