How would you use Spring Boot Actuator safely in production?

Uses Actuator for operational visibility while controlling endpoint exposure, access, detail, and network reachability.

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TL;DR

Spring Boot Actuator adds operational endpoints such as health, metrics, info, and mappings. I expose only the endpoints the runtime or operators need, usually health and a metrics scrape endpoint, and I secure everything beyond a deliberately public liveness or readiness path. Adding the Actuator dependency does not mean every endpoint should be reachable from the public internet.

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Actuator purpose, endpoint discovery, exposure configuration, management paths or ports, authorization, and sensitive data.

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Core answer
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Overview
Actuator is valuable because it exposes application state, but that same visibility makes its production boundary part of the security design.
Spring Boot Actuator adds operational endpoints such as health, metrics, info, and mappings. I expose only the endpoints the runtime or operators need, usually health and a metrics scrape endpoint, and I secure everything beyond a deliberately public liveness or readiness path. Adding the Actuator dependency does not mean every endpoint should be reachable from the public internet.
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Stronger answer
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I separate endpoint enablement from web exposure: an endpoint can exist inside the application without being exposed over HTTP. I can place management traffic on a separate port or network, restrict it with Spring Security, and control when health details are shown. Endpoints such as environment, configuration properties, loggers, heap dumps, and thread dumps can reveal secrets or operational data, so they need tighter access than a basic probe.

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Details

Exposing every endpoint for convenience.
Assuming an enabled endpoint is automatically public.
Returning full health details to anonymous callers.

How would you use Spring Boot Actuator safely in production?

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