Hi dears,
I'm trying to define an alert rule as below, and the scrape and evaluation
interval are 3m.
I checked from log, blackbox will send probe every 2-3second, then the
metrics will be generated every 2-3second, and the data will be compare
with the alert rules to dertermine an alert will be triggered or not?
I have a question if Prometheus compares the Live data from blackbox probe,
or compares the data with Prometheus scrapped in last 3 mins?
prometheus.yml: |-
global:
scrape_interval: 3m
evaluation_interval: 3m
- alert: EndpointDown
expr: probe_success == 0
for: 5s
labels:
severity: critical
annotations:
description: Service {{ $labels.instance }} is unavailable.
value: DOWN ({{ $value }})
summary: "Endpointdown {{ $labels.instance }} is down."
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