{
  "recipient_accounts": ["1234567890", "9876543210"],
  "interval": "30s",
  "failure_threshold": 2,
  "recovery_threshold": 1,
  "repeat_interval": "6h",
  "checks": [
    {
      "name": "业务健康检查",
      "type": "http",
      "target": "https://example.com/healthz",
      "timeout": "5s",
      "expected_status": 200
    },
    {
      "name": "MySQL 端口",
      "type": "tcp",
      "target": "127.0.0.1:3306",
      "timeout": "3s"
    },
    {
      "name": "根分区容量",
      "type": "disk",
      "path": "/",
      "max_percent": 85
    },
    {
      "name": "内存使用率",
      "type": "memory",
      "max_percent": 90
    },
    {
      "name": "系统负载",
      "type": "load",
      "max_value": 8
    },
    {
      "name": "域名解析",
      "type": "dns",
      "target": "example.com"
    },
    {
      "name": "TLS 证书",
      "type": "tls",
      "target": "example.com:443",
      "min_days": 14
    },
    {
      "name": "备份文件新鲜度",
      "type": "file",
      "path": "/var/backups/app/latest.sql",
      "max_age": "26h"
    }
  ]
}