安装AlertManger

# 安装AlertManger

## 下载
- 官网链接： [https://prometheus.io/download/](https://prometheus.io/download/ "https://prometheus.io/download/")
- 本文使用版本：`0.22.2 / 2021-06-01`
- 下载链接：[https://github.com/prometheus/alertmanager/releases/download/v0.22.2/alertmanager-0.22.2.linux-amd64.tar.gz](https://github.com/prometheus/alertmanager/releases/download/v0.22.2/alertmanager-0.22.2.linux-amd64.tar.gz "https://github.com/prometheus/alertmanager/releases/download/v0.22.2/alertmanager-0.22.2.linux-amd64.tar.gz")

## systemd启动脚本
```
cat /usr/lib/systemd/system/alertmanager.service

[Unit]
Description=alertmanager
After=syslog.target network.target
ConditionFileIsExecutable=/usr/local/alertmanager/alertmanager

[Service]
StartLimitInterval=5
StartLimitBurst=10
ExecStart=/usr/local/alertmanager/alertmanager --config.file=/usr/local/alertmanager/alertmanager.yml --web.listen-address=0.0.0.0:9093  --web.config.file=/usr/local/alertmanager/web-config.yml --storage.path=/usr/local/alertmanager/data --data.retention=154h --alerts.gc-interval=30m
ExecReload=/bin/kill -HUP $MAINPID
KillMode=process
Restart=always
RestartSec=30

[Install]
WantedBy=multi-user.target
```

## 配置文件
```yaml
[root@osa-monitor blackbox_exporter]# cat /usr/local/alertmanager/alertmanager.yml 
global:
  resolve_timeout: 2m
  smtp_smarthost: '${email_smtp_url}:465'
  smtp_from: '${email_user}'
  smtp_auth_username: '${email_user}'
  smtp_auth_password: '${email_password}'
  smtp_hello: '${email_user}'
  smtp_require_tls: false
route:
  group_by: ['alertname', 'summary']
  group_wait: 30s
  group_interval: 5m
  repeat_interval: 1h
  receiver: 'email'
  routes:
  - receiver: email
    match_re:
      serverity : email
    group_wait: 10s
receivers:
- name: 'web.hook'
  webhook_configs:
  - url: 'http://127.0.0.1:5001/'
- name: 'email'
  email_configs:
  - to: '${email_address}'
    send_resolved: true
inhibit_rules:
  - source_match:
      severity: 'critical'
    target_match:
      severity: 'warning'
    equal: ['alertname', 'dev', 'instance']
```

## 安装启动
```
tar xzf alertmanager-0.22.2.linux-amd64.tar.gz
mv alertmanager-0.22.2.linux-amd64 /usr/local/alertmanager
systemctl enable alertmanager
systemctl start alertmanager
```