groups:
  - name: ftb-production-alerts
    rules:
      - alert: FtbPostgresDown
        expr: pg_up == 0
        for: 2m
        labels:
          severity: critical
        annotations:
          summary: PostgreSQL exporter cannot reach the FTB database.
          runbook: docs/runbooks/migration-rollback.md

      - alert: FtbDiskPressure
        expr: |
          (
            node_filesystem_avail_bytes{mountpoint="/",fstype!~"tmpfs|overlay"}
            /
            node_filesystem_size_bytes{mountpoint="/",fstype!~"tmpfs|overlay"}
          ) < 0.15
        for: 10m
        labels:
          severity: warning
        annotations:
          summary: Production host root filesystem has less than 15% free space.
          runbook: docs/deployment.md

      - alert: FtbSlowApiLogBurst
        expr: increase(ftb_slow_api_log_total[10m]) > 5
        for: 2m
        labels:
          severity: warning
        annotations:
          summary: Slow API request log volume crossed the V2.8 baseline threshold.
          runbook: docs/deployment.md

      - alert: FtbSlowPrismaLogBurst
        expr: increase(ftb_slow_prisma_log_total[10m]) > 3
        for: 2m
        labels:
          severity: warning
        annotations:
          summary: Slow Prisma query log volume crossed the V2.8 baseline threshold.
          runbook: docs/deployment.md

      - alert: FtbJobFailureLogBurst
        expr: increase(ftb_job_failure_log_total[10m]) > 0
        for: 1m
        labels:
          severity: warning
        annotations:
          summary: Background or compatibility job failure logs were detected.
          runbook: docs/runbooks/xiaobao-background-jobs.md

      - alert: FtbXiaobaoSummaryStale
        expr: ftb_xiaobao_stale_summary_count > 0
        for: 15m
        labels:
          severity: warning
        annotations:
          summary: Xiaobao warning summaries are dirty or stale.
          runbook: docs/runbooks/xiaobao-background-jobs.md