public enum LivenessState
Liveness health check status for Flex instances.
The instance is being drained. The existing connections to the instance have time to complete, but the new ones are being refused.
The instance is reachable i.e. a connection to the application health checking endpoint can be established, and conforms to the requirements defined by the health check.
The instance is unreachable i.e. a connection to the application health checking endpoint cannot be established, or the server does not respond within the specified timeout.
The instance is reachable, but does not conform to the requirements defined by the health check.
The health checking system is aware of the instance but its health is not known at the moment.
There is no liveness health check for the instance. Only applicable for instances in App Engine standard environment.