如何通过默认端点/指标覆盖prometheus

Question

我正在尝试使用prometheus httpserver（io.prometheus.client.exporter.HTTPServer）公开指标，我在下面给出了依赖关系。

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

默认情况下，Prometheus httpserver会公开“/ metrics”端点中的所有指标，我想覆盖它并限制它只显示任何特定端点的指标（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;
    }
}

}

Answer 1

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”配置的报废端点。

看看Prometheus Configuration：

默认情况下，分配给已删除指标的作业名称。 JOB_NAME：

＃从这份工作中刮取目标的频率。 [scrape_interval：|默认=]

刮取此作业时，每次刮擦超时。 [scrape_timeout：|默认=]

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