我正在使用带有 Prometheus 的 spring boot2。我们使用 Postgres 作为数据库。Prometheus 网址未获取数据库指标。
任何参考资料都会非常有帮助。
我努力了
@Configuration
@AutoConfigureAfter({DataSourceAutoConfiguration.class})
public class MyConfiguration {
@Autowired
HikariDataSource dataSource;
@Bean
PostgreSQLDatabaseMetrics dbMeterics() {
return new PostgreSQLDatabaseMetrics(dataSource, "database-name");
}
}
当我到达终点/prometheus 时，出现此错误
java.lang.NullPointerException: null
at io.micrometer.core.instrument.binder.db.PostgreSQLDatabaseMetrics.lambda$bindTo$1(PostgreSQLDatabaseMetrics.java:101)
at io.micrometer.core.instrument.internal.DefaultGauge.value(DefaultGauge.java:40)
at io.micrometer.prometheus.PrometheusMeterRegistry.lambda$newGauge$3(PrometheusMeterRegistry.java:235)
at io.micrometer.prometheus.MicrometerCollector.collect(MicrometerCollector.java:69)
at io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.findNextElement(CollectorRegistry.java:183)
at io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.nextElement(CollectorRegistry.java:216)
at io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.nextElement(CollectorRegistry.java:137)
at io.prometheus.client.exporter.common.TextFormat.write004(TextFormat.java:22)
at org.springframework.boot.actuate.metrics.export.prometheus.PrometheusScrapeEndpoint.scrape(PrometheusScrapeEndpoint.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:282)
at org.springframework.boot.actuate.endpoint.invoke.reflect.ReflectiveOperationInvoker.invoke(ReflectiveOperationInvoker.java:76)