Service Operational Status

The ARS tracks the operational status of services. CygNet services have four operational states.

Service Icon Color	Status	Description
Magenta	Defined	The service has been added to the ARS, but has never been started.
Green	OK	The service is running.
Yellow	Out of Service	The service was stopped normally, or the restart of a previously running service failed.
Red	Failed	The service stopped abnormally.

When a service is started, it registers its network address with an ARS and reports its operational status as OK. When a service is stopped, it reports an Out of Service status and the ARS de-registers its network address.

CygNet Explorer can be used to see the statuses of all services.

Health Checks

Every 10 minutes the ARS sends out a health check to all of the services listed in its database that have an operational status of OK. If a service does not respond within 10 seconds, the ARS tries a second time for 10 seconds. If the service does not respond by the end of the second 10-second interval the ARS marks the service as Failed. Failed services go on a recheck queue for recovery.

In a multi-host system, one ARS may show a service as OK while another ARS show the same service as failed. This situation is usually the result of network issues or timing between ARSs.