The Red Hat Enterprise Virtualization Manager is now able to automatically detect time drift on virtualization hosts. To use this functionality, set these configuration values using the rhevm-config command:
* EnableHostTimeDrift - Enables time drift detection, the default value is false.
* HostTimeDriftInSec - Sets the maximum time drift allowable, in seconds, before an alert is raised. The default value is 300.
Each time the Red Hat Enterprise Virtualization Manager checks the state of the host, it compares the system time of the two systems, expressed in GMT. If EnableHostTimeDrift is true and the manager detects that the times returned differ by more than HostTimeDriftInSec, an alert is written to the log file.
A "VDS_TIME_DRIFT_ALERT" event is also raised, which can be tracked using the event notification daemon.