Overlay event allows to display stats of the generated alert in the graphs. We can get the alert events from Alert History. Based on its time stamp, you get annotations on the graph, to show the different types of Alerts (Critical / Major / Minor).

There are different representation for different type of Alerts:

• Red colored Background for Critical Alerts.
• Orange colored Background for Major Alerts.
• Yellow colored Background for Minor Alerts.

• By clicking on widget panel there we have an option of Overlays event.
• On further clicking Overlays event widget panel we have following options.
  • Critical
  • Major and above
  • Minor and above
  • Info and above
  • Custom Events
  • Off

It will overlay critical events (on the same metric/metrics and subject being shown as graphs) on the graph for the duration which is applied on the Dashboard. Red colored Background will be get highlighted for the critical overlay event.

It will overlay major events along with critical events (on the same metric/metrics and subject being shown as graphs) on the graph for the duration which is applied on the Dashboard. Orange colored Background will be get highlighted for the Major overlay event and Red colored Background will be get highlighted for the critical overlay event.

It will overlay minor events along with critical and major events (on the same metric/metrics and subject being shown as graphs) on the graph for the duration which is applied on the Dashboard. Yellow colored Background will be get highlighted for the Minor overlay event, Red and Orange colored Background will be get highlighted for the critical and Major overlay event respectively.

It will overlay Info events along with critical, major, and minor events (on the same metric/metrics and subject being shown as graphs) on the graph for the duration which is applied on the Dashboard.

All the havoc events and Custom events will available here. In the case of custom a new window will open. In this two types of events are shown:

• Rule Based Events: It will overlay Rule Based Events based on there severity(on the same metric/metrics and subject being shown as graphs) on the graph for the duration which is applied on the Dashboard. Rules based events are configured on basis of their severity i.e; critical, major, minor, and info.
• Custom events: All the havoc events and Custom events will available here. On the basis on there severity it will overlay.

It means there will not be any overlay events on the graph for the duration which is applied on the Dashboard.