# ops/monitoring/alerts-unified.yml
# AWOOOI 統一 Prometheus 告警規則
# 2026-04-05 Claude Code: 整合所有規則，加入統一 layer 標籤
# 2026-04-08 Claude Sonnet 4.6: 補 database_detail_alerts 群組 (6條詳細規則)
# 部署目標: 192.168.0.110:/home/wooo/monitoring/alerts.yml
# 部署方式: scripts/ops/deploy-alerts.sh (CD 自動部署)
#
# 標籤規範:
#   layer: k8s | docker-110 | docker-188 | systemd-188
#   component: 服務名稱
#   team: ops | backend | ai | platform
#   host: "110" | "188" | "120" | "121"
#   auto_repair: "true" | "false"

groups:

  # =========================================================================
  # 主機層告警 (host_alerts)
  # =========================================================================
  - name: host_alerts
    rules:
      - alert: HostDown
        expr: up{job=~"node-exporter.*"} == 0
        for: 1m
        labels:
          severity: critical
          layer: systemd-188
          team: ops
          auto_repair: "false"
        annotations:
          summary: "主機 {{ $labels.host }} 不可達"
          description: "Node Exporter 無回應超過 1 分鐘"

      - alert: HostHighCpuLoad
        expr: 100 - (avg by(host) (rate(node_cpu_seconds_total{mode="idle"}[5m])) * 100) > 80
        for: 5m
        labels:
          severity: warning
          layer: systemd-188
          team: ops
          auto_repair: "true"
          # MCP Phase 2a (ADR-071, 2026-04-11 Claude Sonnet 4.6): SSH MCP 路由標籤
          mcp_provider: "ssh_host"
          host_type: "bare_metal"
          alert_category: "host_resource"
        annotations:
          summary: "主機 {{ $labels.host }} CPU 高負載"
          description: "CPU 使用率超過 80%"

      - alert: HostOutOfMemory
        expr: (1 - (node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes)) * 100 > 85
        for: 5m
        labels:
          severity: warning
          layer: systemd-188
          team: ops
          auto_repair: "false"
          mcp_provider: "ssh_host"
          host_type: "bare_metal"
          alert_category: "host_resource"
        annotations:
          summary: "主機 {{ $labels.host }} 記憶體不足"
          description: "記憶體使用率超過 85%"

      - alert: HostOutOfDiskSpace
        expr: (1 - (node_filesystem_avail_bytes{fstype!~"tmpfs|overlay"} / node_filesystem_size_bytes{fstype!~"tmpfs|overlay"})) * 100 > 85
        for: 5m
        labels:
          severity: warning
          layer: systemd-188
          team: ops
          auto_repair: "false"
          mcp_provider: "ssh_host"
          host_type: "bare_metal"
          alert_category: "host_resource"
        annotations:
          summary: "主機 {{ $labels.host }} 磁碟空間不足"
          description: "磁碟使用率超過 85%"

  # =========================================================================
  # K8s 叢集告警 (kubernetes_alerts)
  # =========================================================================
  - name: kubernetes_alerts
    rules:
      - alert: K3sNodeNotReady
        expr: kube_node_status_condition{condition="Ready", status="true"} == 0
        for: 2m
        labels:
          severity: critical
          layer: k8s
          team: ops
          auto_repair: "false"
        annotations:
          summary: "K3s 節點 {{ $labels.node }} 未就緒"
          description: "節點超過 2 分鐘未達到 Ready 狀態"

      - alert: KubePodCrashLooping
        expr: rate(kube_pod_container_status_restarts_total{namespace="awoooi-prod"}[15m]) > 0
        for: 5m
        labels:
          severity: warning
          layer: k8s
          team: ops
          auto_repair: "true"
        annotations:
          summary: "Pod {{ $labels.namespace }}/{{ $labels.pod }} 持續重啟"
          description: "Pod 在過去 15 分鐘內重啟次數異常"

      - alert: KubePodNotReady
        expr: kube_pod_status_ready{condition="true",namespace="awoooi-prod"} == 0
        for: 5m
        labels:
          severity: warning
          layer: k8s
          team: ops
          auto_repair: "true"
        annotations:
          summary: "Pod {{ $labels.namespace }}/{{ $labels.pod }} 未就緒"
          description: "Running 中的 Pod 超過 5 分鐘未達到 Ready 狀態"

      - alert: KubeDeploymentReplicasMismatch
        expr: kube_deployment_spec_replicas{namespace="awoooi-prod"} != kube_deployment_status_replicas_available{namespace="awoooi-prod"}
        for: 10m
        labels:
          severity: warning
          layer: k8s
          team: ops
          auto_repair: "true"
        annotations:
          summary: "Deployment {{ $labels.namespace }}/{{ $labels.deployment }} 副本數不匹配"
          description: "期望副本數與可用副本數不一致超過 10 分鐘"

      - alert: VeleroBackupFailed
        expr: increase(velero_backup_failure_total[24h]) > 0
        for: 5m
        labels:
          severity: warning
          layer: k8s
          team: ops
          component: velero
          auto_repair: "false"
        annotations:
          summary: "Velero 備份失敗"
          description: "過去 24 小時有備份失敗"

      - alert: VeleroBackupNotRun
        expr: time() - velero_backup_last_successful_timestamp > 86400
        for: 10m
        labels:
          severity: critical
          layer: k8s
          team: ops
          component: velero
          auto_repair: "false"
        annotations:
          summary: "Velero 超過 24 小時未成功備份"
          description: "最後一次成功備份超過 24 小時"

      # Sprint C-2 Host rsync 備份告警 (2026-04-11 Claude Sonnet 4.6)
      # backup-from-110.sh 成功時寫入 /var/run/backup-110.last_success
      # node-exporter textfile collector 讀取此檔案暴露指標
      - alert: HostBackupFailed
        expr: time() - node_textfile_scrape_error{collector="backup_110"} == 0 or absent(node_textfile_scrape_error{collector="backup_110"}) or (time() - backup_110_last_success_timestamp > 90000)
        for: 10m
        labels:
          severity: warning
          layer: docker-188
          team: ops
          component: backup
          host: "188"
          auto_repair: "false"
          alert_category: host_resource
        annotations:
          summary: "188 Host 備份超過 25 小時未成功"
          description: "backup-from-110.sh 可能失敗，/backup/110 資料可能過舊"

  # =========================================================================
  # 資料庫告警 (database_alerts)
  # =========================================================================
  - name: database_alerts
    rules:
      - alert: PostgreSQLDown
        expr: up{job="postgres-exporter"} == 0 or pg_up == 0
        for: 1m
        labels:
          severity: critical
          layer: systemd-188
          component: postgres
          host: "188"
          team: ops
          auto_repair: "false"
        annotations:
          summary: "PostgreSQL 資料庫離線"
          description: "PostgreSQL Exporter 無法連接資料庫超過 1 分鐘"

      - alert: RedisDown
        expr: up{job="redis-exporter"} == 0 or redis_up == 0
        for: 1m
        labels:
          severity: critical
          layer: systemd-188
          component: redis
          host: "188"
          team: ops
          auto_repair: "false"
        annotations:
          summary: "Redis 快取服務離線"
          description: "Redis Exporter 無法連接 Redis 超過 1 分鐘"

      - alert: PostgreSQLHighConnections
        expr: pg_stat_activity_count > 80
        for: 5m
        labels:
          severity: warning
          layer: systemd-188
          component: postgres
          team: ops
          auto_repair: "false"
        annotations:
          summary: "PostgreSQL 連接數過高"
          description: "當前連接數 {{ $value }} 超過 80"

      - alert: RedisMemoryHigh
        expr: redis_memory_max_bytes > 0 and redis_memory_used_bytes / redis_memory_max_bytes * 100 > 80
        for: 5m
        labels:
          severity: warning
          layer: systemd-188
          component: redis
          team: ops
          auto_repair: "false"
        annotations:
          summary: "Redis 記憶體使用過高"
          description: "Redis 記憶體使用率超過 80%"

  # =========================================================================
  # Sprint 5.2 Plan B: 資料庫詳細指標告警 (database_detail_alerts)
  # 前置: postgres-exporter:9187 + redis-exporter:9121 on 192.168.0.188
  # 2026-04-08 Claude Sonnet 4.6 Asia/Taipei
  # =========================================================================
  - name: database_detail_alerts
    rules:
      # ---- PostgreSQL 詳細指標 ----
      - alert: PostgreSQLSlowQueries
        expr: pg_stat_activity_max_tx_duration{datname="awoooi_prod"} > 60
        for: 5m
        labels:
          severity: warning
          layer: systemd-188
          component: postgres
          host: "188"
          team: ops
          auto_repair: "false"
        annotations:
          summary: "PostgreSQL 有慢查詢 (>60s)"
          description: "awoooi_prod 資料庫最長事務超過 60 秒"

      - alert: PostgreSQLDeadlocks
        expr: increase(pg_stat_database_deadlocks{datname="awoooi_prod"}[5m]) > 0
        for: 1m
        labels:
          severity: warning
          layer: systemd-188
          component: postgres
          host: "188"
          team: ops
          auto_repair: "false"
        annotations:
          summary: "PostgreSQL 死鎖發生"
          description: "過去 5 分鐘 awoooi_prod 資料庫有死鎖"

      - alert: PostgreSQLTooManyConnections
        expr: pg_stat_activity_count{datname="awoooi_prod"} > 50
        for: 5m
        labels:
          severity: warning
          layer: systemd-188
          component: postgres
          host: "188"
          team: ops
          auto_repair: "false"
        annotations:
          summary: "PostgreSQL 連接數過高 ({{ $value }})"
          description: "awoooi_prod 連接數超過 50"

      # ---- Redis 詳細指標 ----
      - alert: RedisKeyEviction
        expr: increase(redis_evicted_keys_total[5m]) > 0
        for: 1m
        labels:
          severity: warning
          layer: systemd-188
          component: redis
          host: "188"
          team: ops
          auto_repair: "false"
        annotations:
          summary: "Redis 發生 Key 驅逐"
          description: "過去 5 分鐘有 Key 被驅逐，可能記憶體不足"

      - alert: RedisConnectionsHigh
        expr: redis_connected_clients > 100
        for: 5m
        labels:
          severity: warning
          layer: systemd-188
          component: redis
          host: "188"
          team: ops
          auto_repair: "false"
        annotations:
          summary: "Redis 連接數過高 ({{ $value }})"
          description: "Redis 連接數超過 100"

      - alert: RedisCommandLatencyHigh
        expr: redis_commands_duration_seconds_total / redis_commands_processed_total > 0.01
        for: 5m
        labels:
          severity: warning
          layer: systemd-188
          component: redis
          host: "188"
          team: ops
          auto_repair: "false"
        annotations:
          summary: "Redis 命令平均延遲過高 (>10ms)"
          description: "Redis 命令平均延遲超過 10ms"

  # =========================================================================
  # 服務可用性告警 (service_alerts) — 含 layer 標籤決定修復路徑
  # =========================================================================
  - name: service_alerts
    rules:
      # ---- 188 Docker 層 ----
      - alert: OpenClawDown
        # 2026-04-05 Claude Code: 修正舊命名 ClawBotDown → OpenClawDown
        expr: up{job="clawbot"} == 0
        for: 2m
        labels:
          severity: critical
          layer: docker-188
          component: openclaw
          host: "188"
          team: ops
          auto_repair: "true"
        annotations:
          summary: "OpenClaw 服務離線"
          description: "OpenClaw (192.168.0.188:8088) 已離線超過 2 分鐘"

      - alert: SignOzDown
        expr: probe_success{job="blackbox-http", instance=~".*3301.*"} == 0
        for: 2m
        labels:
          severity: warning
          layer: docker-188
          component: signoz
          host: "188"
          team: ops
          auto_repair: "true"
          mcp_provider: "ssh_host"
          target_host: "192.168.0.188"
          alert_category: "devops_tool"
        annotations:
          summary: "SignOz 服務離線"
          description: "SignOz (192.168.0.188:3301) 已離線超過 2 分鐘"

      # ---- 110 Docker 層 ----
      - alert: SentryDown
        expr: probe_success{job="blackbox-tcp", instance="192.168.0.110:9000"} == 0
        for: 2m
        labels:
          severity: warning
          layer: docker-110
          component: sentry
          host: "110"
          team: ops
          auto_repair: "true"
          mcp_provider: "ssh_host"
          target_host: "192.168.0.110"
          alert_category: "devops_tool"
        annotations:
          summary: "Sentry 服務離線"
          description: "Sentry (192.168.0.110:9000) 已離線超過 2 分鐘"

      - alert: HarborDown
        expr: probe_success{job="blackbox-http", instance=~".*5000.*"} == 0
        for: 2m
        labels:
          severity: critical
          layer: docker-110
          component: harbor
          host: "110"
          team: ops
          auto_repair: "true"
          mcp_provider: "ssh_host"
          target_host: "192.168.0.110"
          alert_category: "devops_tool"
        annotations:
          summary: "Harbor Registry 離線"
          description: "Harbor (192.168.0.110:5000) 已離線超過 2 分鐘，CD pipeline 將無法拉取映像"

      - alert: GiteaDown
        expr: probe_success{job="blackbox-http", instance="http://192.168.0.110:3001"} == 0
        for: 2m
        labels:
          severity: critical
          layer: docker-110
          component: gitea
          host: "110"
          team: ops
          auto_repair: "true"
          mcp_provider: "ssh_host"
          target_host: "192.168.0.110"
          alert_category: "devops_tool"
        annotations:
          summary: "Gitea Git 服務離線"
          description: "Gitea (192.168.0.110:3001) 已離線超過 2 分鐘，CD pipeline 失效"

      - alert: AlertmanagerDown
        expr: probe_success{job="blackbox-tcp", instance="192.168.0.110:9093"} == 0
        for: 2m
        labels:
          severity: critical
          layer: docker-110
          component: alertmanager
          host: "110"
          team: ops
          auto_repair: "true"
        annotations:
          summary: "Alertmanager 離線"
          description: "Alertmanager (192.168.0.110:9093) 已離線，所有告警將靜默"

  # =========================================================================
  # 告警鏈路監控 (alert_chain) — 防止 2026-03-26/04-05 事故重演
  # =========================================================================
  - name: alert_chain
    rules:
      - alert: AlertChainBroken_Alertmanager
        expr: |
          sum(rate(awoooi_webhook_requests_total{source="alertmanager",status!="success"}[5m]))
          / sum(rate(awoooi_webhook_requests_total{source="alertmanager"}[5m])) > 0.1
        for: 10m
        labels:
          severity: critical
          layer: k8s
          team: platform
          auto_repair: "false"
        annotations:
          summary: "Alertmanager Webhook 錯誤率 > 10%"
          description: "告警鏈路可能斷裂，請執行 E2E 驗證"

      - alert: AlertChainBroken_Sentry
        expr: |
          sum(rate(awoooi_webhook_requests_total{source="sentry",status!="success"}[5m]))
          / sum(rate(awoooi_webhook_requests_total{source="sentry"}[5m])) > 0.1
        for: 10m
        labels:
          severity: warning
          layer: k8s
          team: platform
          auto_repair: "false"
        annotations:
          summary: "Sentry Webhook 錯誤率 > 10%"
          description: "Sentry 錯誤可能無法正確處理"

      - alert: NoAlertsReceived2Hours
        expr: time() - max by (source)(awoooi_alert_chain_last_success_timestamp) > 7200
        for: 5m
        labels:
          severity: warning
          layer: k8s
          team: platform
          auto_repair: "false"
        annotations:
          summary: "2 小時內未收到任何告警 ({{ $labels.source }})"
          description: "可能是告警鏈路問題，請執行 Smoke Test"

      - alert: AlertChainUnhealthy
        expr: awoooi_alert_chain_healthy == 0
        for: 5m
        labels:
          severity: critical
          layer: k8s
          team: platform
          auto_repair: "false"
        annotations:
          summary: "告警鏈路不健康 ({{ $labels.source }})"
          description: "告警鏈路標記為不健康，最近處理失敗"

  # =========================================================================
  # 自動修復監控 (auto_repair)
  # =========================================================================
  - name: auto_repair
    rules:
      - alert: AutoRepairLowSuccessRate
        expr: awoooi_auto_repair_success_rate < 0.3
        for: 30m
        labels:
          severity: warning
          layer: k8s
          team: backend
          auto_repair: "false"
        annotations:
          summary: "自動修復成功率過低 ({{ $value | humanizePercentage }})"
          description: "動作 {{ $labels.action }} 的成功率低於 30%，建議檢查 Playbook"

      - alert: PermanentFixRequired
        expr: sum(rate(awoooi_anomaly_escalation_total{level="PERMANENT_FIX"}[1h])) > 0
        for: 1m
        labels:
          severity: critical
          layer: k8s
          team: backend
          auto_repair: "false"
        annotations:
          summary: "需要永久修復的異常升級"
          description: "有異常升級到 PERMANENT_FIX 級別，需要根本修復"

  # =========================================================================
  # Sprint 5.1: Docker 容器健康監控（docker-health-monitor 感知層接入）
  # 由 docker-health-monitor.sh 送 Alertmanager 格式 webhook，
  # 或 Prometheus 自訂 exporter 上報時使用。
  # auto_repair: "true" 代表允許 AWOOOI Guardrail 決策（非直接修復）
  # 實際修復動作由 Service Registry 分級決定（ADR-062）
  # 2026-04-08 Claude Sonnet 4.6 Asia/Taipei
  # =========================================================================
  - name: docker_health_alerts
    rules:
      - alert: DockerContainerUnhealthy
        expr: container_health_status{job="docker-health-monitor"} == 0
        for: 2m
        labels:
          severity: warning
          layer: docker
          team: ops
          auto_repair: "true"
          mcp_provider: "ssh_host"
          alert_category: "devops_tool"
        annotations:
          summary: "容器 {{ $labels.container }} 健康檢查失敗"
          description: "主機 {{ $labels.host }} 容器 {{ $labels.container }} 健康狀態異常，持續 2 分鐘"

      - alert: DockerContainerExited
        expr: container_running_status{job="docker-health-monitor"} == 0
        for: 1m
        labels:
          severity: critical
          layer: docker
          team: ops
          auto_repair: "true"
          mcp_provider: "ssh_host"
          alert_category: "devops_tool"
        annotations:
          summary: "容器 {{ $labels.container }} 已停止"
          description: "主機 {{ $labels.host }} 容器 {{ $labels.container }} 已 exited/dead，持續 1 分鐘"

  # =========================================================================
  # MinIO / Kali 告警
  # =========================================================================
  - name: minio_kali_alerts
    rules:
      - alert: MinIODown
        expr: probe_success{job="blackbox-http", instance=~".*9001.*"} == 0
        for: 2m
        labels:
          severity: warning
          layer: docker-188
          component: minio
          host: "188"
          team: ops
          auto_repair: "true"
        annotations:
          summary: "MinIO (Velero 備份) 離線"
          description: "MinIO (192.168.0.188:9001) 已離線超過 2 分鐘，Velero 備份可能失敗"

      - alert: KaliScannerDown
        expr: probe_success{job="blackbox-http", instance=~".*192.168.0.112.*"} == 0
        for: 5m
        labels:
          severity: info
          layer: docker-188
          component: kali
          host: "112"
          team: ops
          auto_repair: "false"
        annotations:
          summary: "Kali Scanner 離線"
          description: "Kali (192.168.0.112:8080) 離線，安全掃描功能暫停"

  # =========================================================================
  # Plan C — 外部網站監控 (Sprint 5.2, 2026-04-09 Claude Sonnet 4.6 Asia/Taipei)
  # blackbox-http 已涵蓋 4 個外部網站，此群組提供結構化告警
  # auto_repair: "true" — 由 AWOOOI Guardrail 決策（Service Registry 分級）
  # =========================================================================
  - name: external_website_alerts
    rules:
      - alert: MoWoooWorkDown
        expr: probe_success{job="blackbox-http", instance="https://mo.wooo.work"} == 0
        for: 3m
        labels:
          severity: critical
          layer: external
          component: momo-app
          host: "188"
          team: ops
          auto_repair: "true"
        annotations:
          summary: "外部網站 mo.wooo.work 離線"
          description: "mo.wooo.work 探測失敗超過 3 分鐘，容器 momo-app (188) 可能需要重啟"

      - alert: TsenyangWebsiteDown
        expr: probe_success{job="blackbox-http", instance="https://www.tsenyang.com"} == 0
        for: 3m
        labels:
          severity: critical
          layer: external
          component: tsenyang-website
          host: "188"
          team: ops
          auto_repair: "true"
        annotations:
          summary: "外部網站 tsenyang.com 離線"
          description: "tsenyang.com 探測失敗超過 3 分鐘，容器 tsenyang-website (188) 可能需要重啟"

      - alert: StockWoooWorkDown
        expr: probe_success{job="blackbox-http", instance="http://stock.wooo.work"} == 0
        for: 3m
        labels:
          severity: critical
          layer: external
          component: stock-platform
          host: "110"
          team: ops
          auto_repair: "true"
        annotations:
          summary: "外部網站 stock.wooo.work 離線"
          description: "stock.wooo.work 探測失敗超過 3 分鐘，容器 stock-platform (110) 可能需要重啟"

      - alert: BitanWoooWorkDown
        expr: probe_success{job="blackbox-http", instance="https://bitan.wooo.work"} == 0
        for: 3m
        labels:
          severity: critical
          layer: external
          component: bitan-app
          host: "188"
          team: ops
          auto_repair: "true"
        annotations:
          summary: "外部網站 bitan.wooo.work 離線"
          description: "bitan.wooo.work 探測失敗超過 3 分鐘，容器 bitan-app (188) 可能需要重啟"

      - alert: ExternalSiteSSLExpiringSoon
        expr: probe_ssl_earliest_cert_expiry{job="blackbox-http"} - time() < 14 * 24 * 3600
        for: 1h
        labels:
          severity: warning
          layer: external
          component: ssl
          team: ops
          auto_repair: "false"
        annotations:
          summary: "SSL 憑證即將到期: {{ $labels.instance }}"
          description: "{{ $labels.instance }} SSL 憑證將在 14 天內到期，請手動更新"