Merge pull request #9873 from raptorsun/feature/AlertScrapeBodySizeLimitHit

Add Alert PrometheusScrapeBodySizeLimitHit

documentation/prometheus-mixin/alerts.libsonnet

@@ -275,6 +275,20 @@
               description: 'Prometheus %(prometheusName)s has dropped {{ printf "%%.0f" $value }} targets because some samples exceeded the configured label_limit, label_name_length_limit or label_value_length_limit.' % $._config,
             },
           },
+          {
+            alert: 'PrometheusScrapeBodySizeLimitHit',
+            expr: |||
+              increase(prometheus_target_scrapes_exceeded_body_size_limit_total{%(prometheusSelector)s}[5m]) > 0
+            ||| % $._config,
+            'for': '15m',
+            labels: {
+              severity: 'warning',
+            },
+            annotations: {
+              summary: 'Prometheus has dropped some targets that exceeded body size limit.',
+              description: 'Prometheus %(prometheusName)s has dropped {{ printf "%%.0f" $value }} targets because some targets exceeded the configured body_size_limit.' % $._config,
+            },
+          },
           {
             alert: 'PrometheusTargetSyncFailure',
             expr: |||