Prometheus+AlertManager实现邮件报警

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AlertManager下载

https://prometheus.io/download/

解压

添加配置文件test.yml，配置收发邮件邮箱

参考配置：

global:
smtp_smarthost: 'smtp.163.com:25'#163服务器
smtp_from: 'XXX@163.com'#发邮件的邮箱
smtp_auth_username: 'XXX@163.com'#发邮件的邮箱用户名，也就是你的邮箱
smtp_auth_password: 'XXX'#发邮件的邮箱密码route:
group_by: ['alertname'] repeat_interval: 1h receiver: live-monitoringreceivers:
- name: 'live-monitoring'
email_configs:
- to: 'czh1226@qq.com'#收邮件的邮箱

更多配置参考alertmanager包中的simple.yml

添加报警规则

prometheus targets 监控报警参考配置(node_down.yml)：

按 Ctrl+C 复制代码

节点内存使用率监控报警参考配置（memory_over.yml）

groups:
- name: example
rules:
- alert: NodeMemoryUsage
expr: (node_memory_MemTotal_bytes - (node_memory_MemFree_bytes+node_memory_Buffers_bytes+node_memory_Cached_bytes )) / node_memory_MemTotal_bytes * 100 > 80
for: 1m
labels:
user: caizh
annotations:
summary: "{{$labels.instance}}: High Memory usage detected"
description: "{{$labels.instance}}: Memory usage is above 80% (current value is:{{ $value }})"

当然，想要监控节点内存需要提前配置好node_exporter

修改prometheus配置文件prometheus.yml，开启报警功能，添加报警规则配置文件

# Alertmanager configuration
alerting:
alertmanagers:
- static_configs:
- targets: ["localhost:9093"]
# - alertmanager:9093# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
- "node_down.yml"
- "memory_over.yml"

配置完成！

启动alertmanager

./alertmanager --config.file test.yml

启动prometheus(默认会调用prometheus.yml)

./prometheus

http://localhost:9090/alerts

看配置与报警规则是否添加成功

成功则如下图：