It also shows general information about the JHipster Registry service and health information of the cluster of services, similar to the gateway health. The data here is fetched with the help of Spring Actuator health and metric endpoints.
Note the UNKNOWN in the Health section (refer to the preceding screenshot). It tells us that the Eureka server is not running in a highly available mode, or only one instance of JHipster Registry is running. When you boot another instance of the registry (that is, make the application highly available) it goes off.