监控 exporter 的实例
最后更新于：2022-04-02 03:00:39
[TOC]
## 监控 exporter
1. 如果 exporter 超过五分钟无法连接,则警告
## 配置 prometheus.yaml
```
rule_files:
- rules/*.rules
```
## 配置 rules/rules.yml
```
groups:
- name: monitor_exporter
rules:
# 对任何超过5分钟无法联系的实例发出警报
- alert: InstanceDown
expr: up == 0
for: 5m
labels:
severity: page
annotations:
summary: "Instance {{ $labels.instance }} down"
description: "{{ $labels.instance }} of job {{ $labels.job }} has been down for more than 1 minutes."
```
- InstanceDown 表示当实例宕机时（up === 0）触发告警
- APIHighRequestLatency 表示有一半的 API 请求延迟大于 1s 时（api\_http\_request\_latencies\_second{quantile="0.5"} > 1）触发告警
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