| 1 | # Alert rules for shithubd. Keep these short and signal-heavy — |
| 2 | # every alert here should map to a runbook in docs/internal/ |
| 3 | # runbooks/incidents.md by name. |
| 4 | |
| 5 | groups: |
| 6 | - name: shithubd-availability |
| 7 | interval: 30s |
| 8 | rules: |
| 9 | - alert: ShithubdWebDown |
| 10 | expr: up{job="shithubd-web"} == 0 |
| 11 | for: 2m |
| 12 | labels: {severity: page} |
| 13 | annotations: |
| 14 | summary: "shithubd web {{ $labels.instance }} is down" |
| 15 | runbook: "runbooks/incidents.md#shithubd-down" |
| 16 | |
| 17 | - alert: ShithubdWorkerDown |
| 18 | expr: up{job="shithubd-worker"} == 0 |
| 19 | for: 5m |
| 20 | labels: {severity: page} |
| 21 | annotations: |
| 22 | summary: "shithubd worker is down" |
| 23 | runbook: "runbooks/incidents.md#worker-down" |
| 24 | |
| 25 | - alert: PostgresDown |
| 26 | expr: up{job="postgres"} == 0 |
| 27 | for: 1m |
| 28 | labels: {severity: page} |
| 29 | annotations: |
| 30 | summary: "postgres is down — site cannot serve writes" |
| 31 | runbook: "runbooks/incidents.md#postgres-down" |
| 32 | |
| 33 | - name: shithubd-latency |
| 34 | interval: 30s |
| 35 | rules: |
| 36 | - alert: HighRequestLatencyP95 |
| 37 | expr: | |
| 38 | histogram_quantile(0.95, |
| 39 | sum(rate(http_request_duration_seconds_bucket[5m])) by (route, le) |
| 40 | ) > 1.5 |
| 41 | for: 10m |
| 42 | labels: {severity: ticket} |
| 43 | annotations: |
| 44 | summary: "p95 latency on {{ $labels.route }} > 1.5s" |
| 45 | |
| 46 | - alert: HighDBQueryRate |
| 47 | expr: | |
| 48 | sum(rate(pg_stat_statements_calls_total[5m])) > 5000 |
| 49 | for: 10m |
| 50 | labels: {severity: ticket} |
| 51 | annotations: |
| 52 | summary: "DB call rate sustained > 5k/s — possible N+1 regression" |
| 53 | |
| 54 | - name: shithubd-jobs |
| 55 | interval: 30s |
| 56 | rules: |
| 57 | - alert: JobBacklogGrowing |
| 58 | expr: shithubd_job_queue_depth > 5000 |
| 59 | for: 15m |
| 60 | labels: {severity: ticket} |
| 61 | annotations: |
| 62 | summary: "job queue depth > 5k — worker cannot keep up" |
| 63 | runbook: "runbooks/incidents.md#job-backlog" |
| 64 | |
| 65 | - alert: WebhookDeliveryFailing |
| 66 | expr: | |
| 67 | rate(shithubd_webhook_deliveries_total{result="failure"}[15m]) |
| 68 | / |
| 69 | rate(shithubd_webhook_deliveries_total[15m]) > 0.5 |
| 70 | for: 30m |
| 71 | labels: {severity: ticket} |
| 72 | annotations: |
| 73 | summary: "webhook failure rate > 50% sustained" |
| 74 | |
| 75 | - name: shithubd-backups |
| 76 | interval: 5m |
| 77 | rules: |
| 78 | - alert: BackupOverdue |
| 79 | expr: time() - shithubd_backup_last_success_seconds > 60 * 60 * 30 |
| 80 | for: 0m |
| 81 | labels: {severity: page} |
| 82 | annotations: |
| 83 | summary: "no successful backup in > 30h" |
| 84 | runbook: "runbooks/backups.md#missed-backup" |
| 85 |