Question

我很难调试为什么我的指标没有达到我的普罗米修斯标准。我正在尝试向oc代理发送简单的指标，并从中使用prometheus将其提取，但是我的代码没有失败，并且我在prometheus中看不到指标。那么，我该如何调试呢？我可以查看指标是否到达oc代理吗？

cAgentMetricsExporter.createAndRegister(
            OcAgentMetricsExporterConfiguration.builder()
                    .setEndPoint("IP:55678")
                    .setServiceName("my-service-name")
                    .setUseInsecure(true)
                    .build());

    Aggregation latencyDistribution = Aggregation.Distribution.create(BucketBoundaries.create(
            Arrays.asList(
                    0.0, 25.0, 100.0, 200.0, 400.0, 800.0, 10000.0)));


    final Measure.MeasureDouble M_LATENCY_MS = Measure.MeasureDouble.create("latency", "The latency in milliseconds", "ms");
    final Measure.MeasureLong M_LINES = Measure.MeasureLong.create("lines_in", "The number of lines processed", "1");
    final Measure.MeasureLong M_BYTES_IN = Measure.MeasureLong.create("bytes_in", "The number of bytes received", "By");

    View[] views = new View[]{
            View.create(View.Name.create("myapp/latency"),
                    "The distribution of the latencies",
                    M_LATENCY_MS,
                    latencyDistribution,
                    Collections.emptyList()),

            View.create(View.Name.create("myapp/lines_in"),
                    "The number of lines that were received",
                    M_LATENCY_MS,
                    Aggregation.Count.create(),
                    Collections.emptyList()),
    };

    // Ensure that they are registered so
    // that measurements won't be dropped.
    ViewManager manager = Stats.getViewManager();
    for (View view : views)
        manager.registerView(view);


    final StatsRecorder STATS_RECORDER = Stats.getStatsRecorder();

    STATS_RECORDER.newMeasureMap()
            .put(M_LATENCY_MS, 17.0)
            .put(M_LINES, 238)
            .put(M_BYTES_IN, 7000)
            .record();

Answer 1

一个好问题；我也为此感到挣扎。

代理应提供更好的日志记录。

Prometheus出口商一直是我的通用解决方案。配置完成后，您可以点击代理的指标终结点以确认它是原始指标。

如果要获取指标，则问题出在Prometheus Server的目标配置上。您可以检查服务器的目标端点，以确保它正在从代理接收指标。

第二步是配置zPage，然后检查/debug/rpcz和/debug/tracez，以确保gRPC调用正在访问该代理。

例如

receivers:
  opencensus:
    address: ":55678"

exporters:
  prometheus:
    address: ":9100"

zpages:
  port: 9999

您应该获取以下数据：

http://[AGENT]:9100/metrics
http://[AGENT]:9999/debug/rpcz
http://[AGENT]:9999/debug/tracez

另一种骇人听闻的解决方案是规避代理并配置例如一个Prometheus Exporter，直接在您的代码中运行它，并检查它的发货指标（通过/metrics）。

通常您需要冲洗出口商。

如何调试opencensus指标代理？

1 个答案: