Java弹簧执行器中的Promtheus错误

问题描述

我在Spring Boot应用程序中使用Prometheus端点启用并配置了Spring Actuator。但是我收到一个错误，Prometheus要求所有具有相同名称的仪表都具有相同的标签键集。但是不幸的是，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>

使用

<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>

这是我的错误消息：

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)

有什么主意吗？！ 删除Prometheus端点配置（micrometer-registry-prometheus依赖项）时，没有此错误。

解决方法

我将micrometer-registry-prometheus从1.5.1更新为1.5.4解决了我的问题

通过此更新，错误消息更加清晰：

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。我向所有指标添加了通用标签。删除通用标签后，该错误已解决。