Spring Boot Appication 监控记录可视化

SpringBoot 应用监控功能由 Actuator 模块进行采集，通常以 json/txt 文件格式进行显示。可视化方式通常需要配合其他组件进行，如 Prometheus 等。

1.在pom.xml中添加Actuator与Prometheus代码依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

<!-- Contains aspectj - required by TimedAspect -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-aop</artifactId>
</dependency>

<dependency>
    <groupId>io.micrometer</groupId>
    <artifactId>micrometer-registry-prometheus</artifactId>
    <scope>runtime</scope>
</dependency>

2.在application.properties中配置暴露给actuator的接口，这样便可以通过/actuator/prometheus接口访问监控数据了

management.endpoints.web.exposure.include=health,info,prometheus

3.Prometheus是独立应用，需要单独启动。SpringBoot配置了Actuator暴露接口后，Prometheus会通过pull方式定期访问监控接口获取数据，可视化呈现给前端。
编辑 /etc/prometheus/prometheus.yml，配置：

# Sample Prometheus config
# This assumes that your Prometheus instance can access this application on localhost:8080
global:
  scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).

scrape_configs:
  - job_name: 'spring boot scrape'
    metrics_path: '/actuator/prometheus'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:8080']

其中localhost:8080为监控应用的IP和端口号

访问 http://localhost:8080/actuator/prometheus 应可以看到文本形式的监控数据。

4.浏览器输入 localhost:9090 进入 promethues 监控界面，点击上方菜单栏 Status > Targets: