I want to use Prometheus + alertmanager for health manager. I want to know
what is the lowest value I can use for scraping metrics (I hope that I can
have a config for particuliar rules) and send alert as soon as there are
alerts. I need almost realtime. Is it possible in Prometheus +
alertmanager ?
I have a sample config that works now, but is it possible to have 1s are
something that prometheus send alert as soon as the metric is read ?
serverFiles:
alerts:
groups:
- name: Instances
rules:
- alert: InstanceDown
expr: up == 0
for: 10s
labels:
severity: page
annotations:
description: '{{ $labels.instance }} of job {{ $labels.job }}
has been down for more than 1 minute.'
summary: 'Instance {{ $labels.instance }} down'
alertmanagerFiles:
alertmanager.yml:
route:
receiver: default-receiver
group_wait: 5s
group_interval: 10s
receivers:
- name: default-receiver
webhook_configs:
- url: "https://webhook.site/815a0b0b-f40c-4fc2-984d-e29cb9606840";
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