java中普罗米修斯的错误（弹簧执行器）答案

【问题标题】：Error from promtheus in java (spring acuator)java中普罗米修斯的错误（弹簧执行器）
【发布时间】：2020-12-13 23:10:29
【问题描述】：

我在我的 Spring Boot 应用程序中启用并配置了带有 Prometheus 端点的 Spring Actuator。但是我收到一个错误，Prometheus 要求所有同名的仪表都具有相同的标签键集。但不幸的是，Spring Actuator 不会为jvm_gc_pause_seconds 这样做。

我正在使用：

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.3.1.RELEASE</version>
</parent>

与

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

....

<dependency>
    <groupId>io.micrometer</groupId>
    <artifactId>micrometer-core</artifactId>
    <version>1.5.1</version>
</dependency>
<dependency>
    <groupId>io.micrometer</groupId>
    <artifactId>micrometer-registry-prometheus</artifactId>
    <version>1.5.1</version>
</dependency>

这是我的错误信息：

java.lang.IllegalArgumentException: Prometheus requires that all meters with the same name have the same set of tag keys. There is already an existing meter named 'jvm_gc_pause_seconds'  │
│     at io.micrometer.prometheus.PrometheusMeterRegistry.lambda$applyToCollector$17(PrometheusMeterRegistry.java:429)                                                                       │
│     at java.base/java.util.concurrent.ConcurrentHashMap.compute(Unknown Source)                                                                                                            │
│     at io.micrometer.prometheus.PrometheusMeterRegistry.applyToCollector(PrometheusMeterRegistry.java:413)                                                                                 │
│     at io.micrometer.prometheus.PrometheusMeterRegistry.newTimer(PrometheusMeterRegistry.java:196)                                                                                         │
│     at io.micrometer.core.instrument.MeterRegistry.lambda$timer$2(MeterRegistry.java:308)                                                                                                  │
│     at io.micrometer.core.instrument.MeterRegistry.getOrCreateMeter(MeterRegistry.java:612)                                                                                                │
│     at io.micrometer.core.instrument.MeterRegistry.registerMeterIfNecessary(MeterRegistry.java:566)                                                                                        │
│     at io.micrometer.core.instrument.MeterRegistry.timer(MeterRegistry.java:306)                                                                                                           │
│     at io.micrometer.core.instrument.Timer$Builder.register(Timer.java:539)                                                                                                                │
│     at io.micrometer.core.instrument.binder.jvm.JvmGcMetrics.lambda$bindTo$1(JvmGcMetrics.java:151)                                                                                        │
│     at java.management/sun.management.NotificationEmitterSupport.sendNotification(Unknown Source)                                                                                          │
│     at jdk.management/com.sun.management.internal.GarbageCollectorExtImpl.createGCNotification(Unknown Source)

有什么想法吗？！当我删除 Prometheus 端点配置（micrometer-registry-prometheus 依赖项）时，我没有出现此错误。

【问题讨论】：

标签： java spring prometheus spring-boot-actuator actuator

【解决方案1】：

我通过将 micrometer-registry-prometheus 从 1.5.1 更新到 1.5.4 解决了我的问题

通过此更新，错误消息更易读：

Prometheus requires that all meters with the same name have the same set of tag keys. There is already an existing meter named 'jvm_gc_pause_seconds' containing tag keys [username, endpoint]. The meter you are attempting to register has keys [username, endpoint, service].

所以我发现了问题。我为所有指标添加了一个通用标签。去掉通用标签后，错误解决。

【讨论】：