Following are the four possible states for the health of a Service Fabric entity:

• OK: The entity and its children are healthy as of the current reports.
• Warning: This state informs us that there may be some potential issue on this entity of any of its children. A warning state does not mean that the entity is unhealthy. Delay in communication or reporting can also cause this state. A warning state will usually recover or degrade down to an error within some time. It is normal to see this state on your cluster while you are updating the application, service, or the cluster itself.
• Error: The entity has an error reported on it. A fix for this will be required to ensure correct functioning of this entity.
• Unknown: This state usually shows up when the reported entity is absent in the health store. This may be because of clean up or delay in the setup.