The ‘Mass Re-Check’
option within a Host Group’s contextual menu will load a modal window when
clicked, which will look similar to the screen shown below:
The window allows you to select which Hosts and Service Checks that you wish to force a re-check.
This can be done on a Service Check by Service Check basis, or you can
simply select ‘all’ (scheduled a re-check of all Hosts and Service Checks
within the given Host Group), or you can choose to re-check only certain
Service Checks based on their state, e.g. only re-check CRITICAL Service Checks
to see if they return to an ‘OK’ state.