Customization

The health endpoint consists of a health aggregator and any number of health indicators. To add a health indicator, create a bean class that implements HealthIndicator. It is recommended to also use either @Liveness or @Readiness qualifier. If no qualifier is used, the health indicator will be part of /health and /health/readiness endpoints. A base class AbstractHealthIndicator is available to subclass to make the process easier.

All health indicator beans are collected together with the health aggregator. To provide your own implementation of the health aggregator, create a class that implements HealthAggregator and register it as a bean. To ensure your implementation is used instead of the default, add the @Replaces annotation to your class with the value being the default implementation DefaultHealthAggregator.

The default health aggregator returns an overall status calculated based on the health statuses of the indicators. A health status consists of several pieces of information.

The “worst” status is returned as the overall status. A non-operational status is selected over an operational status. A higher severity is selected over a lower severity.