SpringBoot Actuator & SpringBoot Admin

SpringBoot Actuator提供了很多监控和管理你的spring boot应用的HTTP或者JMX端点，并且你可以有选择地开启和关闭部分功能。

当你的spring boot应用中引入依赖之后，将自动的拥有审计、健康检查、Metrics监控功能。

Spring Boot Admin用于监控基于Spring Boot的应用，它是在Spring Boot Actuator的基础上提供简洁的可视化 WEB UI。

SpringBoot Actuator: https://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#production-ready

SpringBoot Admin: http://codecentric.github.io/spring-boot-admin/2.0.0/

相关文档：

http://blog.battcn.com/2018/05/24/springboot/v2-actuator-introduce/

https://blog.csdn.net/qq_26000415/article/details/79065075

内置的endpoints：

ID	Description	Enabled by default
ID	Description	Enabled by default
auditevents	Exposes audit events information for the current application.	Yes
beans	Displays a complete list of all the Spring beans in your application.	Yes
caches	Exposes available caches.	Yes
conditions	Shows the conditions that were evaluated on configuration and auto-configuration classes and the reasons why they did or did not match.	Yes
configprops	Displays a collated list of all @ConfigurationProperties.	Yes
env	Exposes properties from Spring’s ConfigurableEnvironment.	Yes
flyway	Shows any Flyway database migrations that have been applied.	Yes
health	Shows application health information.	Yes
httptrace	Displays HTTP trace information (by default, the last 100 HTTP request-response exchanges).	Yes
info	Displays arbitrary application info.	Yes
integrationgraph	Shows the Spring Integration graph.	Yes
loggers	Shows and modifies the configuration of loggers in the application.	Yes
liquibase	Shows any Liquibase database migrations that have been applied.	Yes
metrics	Shows ‘metrics’ information for the current application.	Yes
mappings	Displays a collated list of all @RequestMapping paths.	Yes
scheduledtasks	Displays the scheduled tasks in your application.	Yes
sessions	Allows retrieval and deletion of user sessions from a Spring Session-backed session store. Not available when using Spring Session’s support for reactive web applications.	Yes
shutdown	Lets the application be gracefully shutdown.	No
threaddump	Performs a thread dump.	Yes

如果是Web应用，还包括：

ID	Description	Enabled by default
heapdump	Returns a GZip compressed hprof heap dump file.	Yes
jolokia	Exposes JMX beans over HTTP (when Jolokia is on the classpath, not available for WebFlux).	Yes
logfile	Returns the contents of the logfile (if logging.file or logging.path properties have been set). Supports the use of the HTTP Range header to retrieve part of the log file’s content.	Yes
prometheus	Exposes metrics in a format that can be scraped by a Prometheus server.	Yes