{
  "project": "Server404",
  "api_version": "2.0",
  "node": "mon01",
  "hostname": "mon01",
  "role": "monitoring server",
  "generated_at": "2026-06-13 21:16:21",
  "source": "live",
  "duration_ms": 332,
  "overall": "ok",
  "score": {
    "value": 100,
    "checks_total": 12,
    "checks_passed": 12,
    "checks_failed": 0
  },
  "system": {
    "os": "Ubuntu 24.04.4 LTS",
    "kernel": "6.8.0-117-generic",
    "uptime": "up 2 weeks, 4 days, 14 hours, 9 minutes",
    "cpu_cores": 1,
    "load_average": {
      "1m": 0.11,
      "5m": 0.07,
      "15m": 0.07
    },
    "memory": {
      "memory_used_percent": 30.5,
      "swap_used_percent": 0.0,
      "memory_total_mb": 3916,
      "memory_used_mb": 1195,
      "memory_available_mb": 2720,
      "swap_total_mb": 1023,
      "swap_used_mb": 0
    },
    "failed_units": {
      "count": 0,
      "units": []
    },
    "disk_root": {
      "size": "9.8G",
      "used": "7.3G",
      "available": "2.4G",
      "used_percent": "76%",
      "mount": "/"
    },
    "inode_root": {
      "inodes": "655360",
      "used": "192276",
      "available": "463084",
      "used_percent": "30%",
      "mount": "/"
    },
    "backup_active": {
      "path": "/var/backups/server404/active",
      "exists": false,
      "bytes": 0,
      "human": "unavailable"
    },
    "reports": {
      "path": "/opt/server404-admin/reports",
      "exists": true,
      "bytes": 412018,
      "human": "402.4 KB"
    },
    "uptime_kuma_data": {
      "path": "/opt/server404-admin/uptime-kuma/data",
      "exists": false,
      "bytes": 0,
      "human": "unavailable"
    }
  },
  "services": {
    "nginx": {
      "active": "active",
      "substate": "running",
      "enabled": "enabled",
      "since": "Tue 2026-05-26 08:07:23 MSK"
    },
    "ssh": {
      "active": "active",
      "substate": "running",
      "enabled": "disabled",
      "since": "Tue 2026-05-26 07:06:59 MSK"
    },
    "docker": {
      "active": "active",
      "substate": "running",
      "enabled": "enabled",
      "since": "Tue 2026-05-26 07:36:47 MSK"
    },
    "postgresql": {
      "active": "active",
      "substate": "exited",
      "enabled": "enabled",
      "since": "Tue 2026-05-26 08:02:02 MSK"
    },
    "zabbix-server": {
      "active": "active",
      "substate": "running",
      "enabled": "enabled",
      "since": "Tue 2026-05-26 13:49:39 MSK"
    },
    "zabbix-agent2": {
      "active": "active",
      "substate": "running",
      "enabled": "enabled",
      "since": "Tue 2026-06-02 21:35:11 MSK"
    },
    "fail2ban": {
      "active": "active",
      "substate": "running",
      "enabled": "enabled",
      "since": "Tue 2026-05-26 13:33:53 MSK"
    },
    "server404-report-api-mon01": {
      "active": "active",
      "substate": "running",
      "enabled": "enabled",
      "since": "Mon 2026-06-01 02:32:30 MSK"
    }
  },
  "network": {
    "listening_ports": [
      22,
      53,
      80,
      323,
      443,
      3001,
      4041,
      5432,
      8080,
      10050,
      10051,
      40923
    ],
    "expected_public_ports": [
      22,
      80,
      443
    ],
    "expected_internal_ports": [
      3001,
      5432,
      8080,
      10050
    ],
    "restricted_ports": {
      "10051": "Zabbix Server, allowed only from web01 by firewall"
    }
  },
  "tls": {
    "status.server404.space": {
      "host": "status.server404.space",
      "issuer": "E8",
      "subject": "status.server404.space",
      "valid_until": "2026-08-24 03:36:28 UTC",
      "days_left": 71
    }
  },
  "endpoints": {
    "status_health": {
      "url": "https://status.server404.space/health",
      "body": "ok"
    },
    "status_page": {
      "url": "https://status.server404.space/status/server404",
      "code": "200"
    }
  },
  "monitoring": {
    "uptime_kuma_container": {
      "name": "server404-uptime-kuma",
      "status": "running",
      "health": "healthy",
      "started_at": "2026-05-31T06:11:40.382490433Z",
      "image": "louislam/uptime-kuma:1"
    },
    "uptime_kuma_http_monitors_expected": 8,
    "zabbix_version": "zabbix_server (Zabbix) 7.0.26",
    "zabbix_agent2_version": "zabbix_agent2 (Zabbix) 7.0.26",
    "zabbix_web_scenario": "Server404 /health availability",
    "zabbix_expected": {
      "url": "https://server404.space/health",
      "http_code": "200",
      "body": "ok",
      "failed_step": 0
    }
  },
  "backup": {
    "active_dir": "/var/backups/server404/active",
    "latest": {
      "path": "/var/backups/server404/active",
      "exists": false
    },
    "principle": "backup is accepted only with SHA-256 and restore-proof"
  },
  "versions": {
    "nginx": "nginx version: nginx/1.24.0 (Ubuntu)",
    "docker": "Docker version 29.1.3, build 29.1.3-0ubuntu3~24.04.2",
    "postgresql": "psql (PostgreSQL) 16.14 (Ubuntu 16.14-0ubuntu0.24.04.1)",
    "python": "Python 3.12.3",
    "zabbix_server": "zabbix_server (Zabbix) 7.0.26",
    "zabbix_agent2": "zabbix_agent2 (Zabbix) 7.0.26"
  },
  "checks": [
    {
      "name": "service:nginx",
      "passed": true
    },
    {
      "name": "service:ssh",
      "passed": true
    },
    {
      "name": "service:docker",
      "passed": true
    },
    {
      "name": "service:postgresql",
      "passed": true
    },
    {
      "name": "service:zabbix-server",
      "passed": true
    },
    {
      "name": "service:zabbix-agent2",
      "passed": true
    },
    {
      "name": "service:fail2ban",
      "passed": true
    },
    {
      "name": "service:server404-report-api-mon01",
      "passed": true
    },
    {
      "name": "failed_units",
      "passed": true
    },
    {
      "name": "status_health",
      "passed": true
    },
    {
      "name": "status_page",
      "passed": true
    },
    {
      "name": "uptime_kuma_container",
      "passed": true
    }
  ]
}