Maven 如何将Spring引导应用程序中的度量导出到Prometheus中？

我有一个简单的Maven Spring启动应用程序（Java），正在使用Prometheus从中收集度量信息。我的pom文件中包含了所有必要的Prometheus依赖项，并且在@SpringBootApplication类中包含了@EnablePrometheUseEndpoint注释，但是当我运行应用程序并尝试访问localhost:8080/Prometheus上的度量时（我认为这是Prometheus发送检测度量的默认端点？），我得到一个401错误。我是否正确插入应用程序，以便Prometheus可以使用@EnablePrometheUseEndpoint注释收集度量值？普罗米修斯在哪里显示我的仪表化指标（是否在localhost:8080/Prometheus中）？我还尝试在localhost中查找这些指标：8080/metrics，但运气不好。非常感谢您的帮助

@SpringBootApplication
@RestController
@EnablePrometheusEndpoint
public class Example {

    //Just a logger that keeps track of relevant information:
    private static final Logger LOGGER = Logger.getLogger(Example.class.getName());

    //counter for counting how many times an endpoint has been hit
    static final Counter myCounter = Counter.build()    
                                              .name("CounterName") //note: by convention, counters should have "_total" suffix
                                              .help("Total requests recorded by a specific endpoint")
                                              .labelNames("status")
                                              .register();
    @RequestMapping("/hello")
    String hello() {

        myCounter.labels("customLabel1").inc(); //increment the number of requests by one
        LOGGER.log(Level.INFO, "Number of times /hello has been hit: " + myCounter.labels("customLabel1").get());

        return "Hello world! This is an example response!";
    }

    @RequestMapping("/homepage")
    String homePage() {

        myCounter.labels("customLabel2").inc(); //increment the number of requests by one
        LOGGER.log(Level.INFO, "Number of times /homepage has been hit: " + myCounter.labels("customLabel2").get());

        return "this is the home page!!";
    }


    public static void main(String[] args) throws Exception {
        SpringApplication.run(Example.class, args);
    }

}

下面是我的pom.xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>springboot</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.8.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>


        <!-- Prometheus dependencies -->
        <!-- The client -->
        <dependency>
            <groupId>io.prometheus</groupId>
            <artifactId>simpleclient</artifactId>
            <version>0.1.0</version>
        </dependency>

        <dependency>
            <groupId>io.prometheus</groupId>
            <artifactId>simpleclient_spring_boot</artifactId>
            <version>0.1.0</version>
        </dependency>

        <dependency>
            <groupId>io.prometheus</groupId>
            <artifactId>simpleclient_servlet</artifactId>
            <version>0.1.0</version>
        </dependency>
        <!-- Hotspot JVM metrics -->
        <dependency>
            <groupId>io.prometheus</groupId>
            <artifactId>simpleclient_hotspot</artifactId>
            <version>0.1.0</version>
        </dependency>
        <!-- Exposition HTTPServer -->
        <dependency>
            <groupId>io.prometheus</groupId>
            <artifactId>simpleclient_httpserver</artifactId>
            <version>0.1.0</version>
        </dependency>
        <!-- Pushgateway exposition -->
        <dependency>
            <groupId>io.prometheus</groupId>
            <artifactId>simpleclient_pushgateway</artifactId>
            <version>0.1.0</version>
        </dependency>

        <!-- Spring Boot Actuator for exposing metrics -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
            <version>1.5.8.RELEASE</version>
        </dependency>


    </dependencies>


</project>

4.0.0
com.example
您的普罗米修斯被配置为在
http://localhost:8080/metrics
（默认值），而
@enablePrometheUseEndpoint
在
http://localhost:8080/prometheus

因此，您应该在
prometheus.yml
中将
metrics\u path
设置为
prometheus

401之所以发生，是因为默认情况下，Spring Boot Actuator的
指标
端点受到保护。
尝试在应用程序中添加
endpoints.prometheus.sensitive:false
。属性或清单。这将使您的普罗米修斯端点不受保护，并可用于刮取。
要将自定义度量发布到普罗米修斯，您需要使用普罗米修斯推送网关

在这两个链接上可以找到更多文档




我在我的prometheus.yml文件中添加了“metrics\u path:/prometheus”（在-job\u name:“hello\u world\u spring\u boot”标签下），但仍然看到相同的401错误。在我的prometheus.yml文件中是否还有其他需要更改的内容？另外，当我将配置更改为“metrics\u path:”/prometheus'（在/prometheus文件中添加单引号）我得到的是406错误，而不是401错误。
# my global config
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).

  # Attach these labels to any time series or alerts when communicating with
  # external systems (federation, remote storage, Alertmanager).
  external_labels:
      monitor: 'codelab-monitor'

# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
  # - "first.rules"
  # - "second.rules"

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: 'prometheus'

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.
    scrape_interval: 5s

    static_configs:
      - targets: ['localhost:9090']

#The following lines are meant to monitor my  spring boot app
  - job_name: 'hello_world_spring_boot'
    scrape_interval: 5s

    static_configs:
      - targets: ['localhost:8080']