如何在默认端点/指标下覆盖普罗米修斯

时间:2019-02-13 10:27:31

标签: java servlets prometheus httpserver

我正在尝试使用普罗米修斯httpserver(io.prometheus.client.exporter.HTTPServer)公开指标,而我正在使用以下给定依赖性。

 <dependency>
  <groupId>io.prometheus</groupId>
  <artifactId>simpleclient_httpserver</artifactId>
  <version>0.2.0</version>
</dependency>

默认情况下,Prometheus httpserver公开“ / metrics”端点中的所有度量,我想覆盖它并限制它仅公开任何特定端点的度量(例如“ / prometheusMetrics”)。使用下面的代码,我运行prometheus httpserver并公开指标。

@ServiceBean(singleton = true)
public class PrometheusCustomHTTPServer {

private static Logger s_logger = LoggerFactory.getLogger(PrometheusCustomHTTPServer.class);

private HTTPServer httpServer;
 private static CollectorRegistry registry = CollectorRegistry.defaultRegistry;
 private static boolean initailized = false;


@PostConstruct
public void start() {
    if(httpServer == null) {
        String hostAddress;
        try {
            int port = 9090;
            httpServer = new HTTPServer(port,true); 
            s_logger.error("started prometheus at http://"+port);
        } catch (IOException e) {
            System.out.println("Exception occured while starting of prometheus server" + e);
        }
        initialize(registry);
    }
}

private static  synchronized void initialize(CollectorRegistry registryToUse) {
    if(!initailized) {
         new StandardExports().register(registry);
         new MemoryPoolsExports().register(registry); 
          new GarbageCollectorExports().register(registry);
          new ThreadExports().register(registry);
          new ClassLoadingExports().register(registry); 
         System.out.println("StandardExports initialized");
         initailized = true;
    }
}

}

1 个答案:

答案 0 :(得分:0)

您正在更改客户端配置,但这还不够。您还应该更新Prometheus“服务器端”配置的抓取端点。

看看Prometheus Configuration

  
    

默认情况下,分配给抓取指标的作业名称。 job_name:

  
     

#从这项工作中抓取目标的频率。 [scrape_interval:|默认=]

     

抓取此作业时的每个抓取超时。 [scrape_timeout:|默认=]

     

#从目标获取指标的HTTP资源路径。    [metrics_path:|默认= /指标]