165 lines
4.8 KiB
Markdown
165 lines
4.8 KiB
Markdown
# Incident Runbook
|
|
|
|
Triage order for Linear Void incidents. Work top-to-bottom — each tier depends on the one above.
|
|
|
|
## Triage Order
|
|
|
|
1. Edge Reachability (Cloudflare)
|
|
2. Origin Health (VPS/Docker)
|
|
3. Playout Progression (HLS)
|
|
4. Chat Connectivity (WebSocket)
|
|
5. Data-Plane (Redis/DB)
|
|
|
|
## 1. Edge Reachability (Cloudflare)
|
|
|
|
**Symptoms:** `linearvoid.tv` not resolving, SSL errors, 5xx from Cloudflare.
|
|
|
|
```bash
|
|
# Check DNS
|
|
dig linearvoid.tv
|
|
dig www.linearvoid.tv
|
|
|
|
# Check Cloudflare status
|
|
curl -I https://linearvoid.tv/health
|
|
```
|
|
|
|
**Common causes:**
|
|
|
|
- DNS misconfiguration (A record pointing to wrong IP)
|
|
- Cloudflare proxy disabled (grey cloud → origin exposed directly)
|
|
- SSL certificate expired (check Cloudflare dashboard → SSL/TLS)
|
|
- Cloudflare outage → check [https://www.cloudflarestatus.com](https://www.cloudflarestatus.com)
|
|
|
|
**Mitigation:**
|
|
|
|
- Verify A record: `linearvoid.tv` → origin IP (proxied, orange cloud)
|
|
- Bypass Cloudflare temporarily: `curl -H "Host: linearvoid.tv" http://<origin-ip>/health`
|
|
|
|
## 2. Origin Health (VPS/Docker)
|
|
|
|
**Symptoms:** Cloudflare returns 502/504, containers down.
|
|
|
|
```bash
|
|
# Remote Docker (test lab)
|
|
docker -H tcp://192.168.88.40:2375 ps
|
|
docker -H tcp://192.168.88.40:2375 logs linearvoid-nginx --tail 50
|
|
|
|
# Direct health check
|
|
curl http://192.168.88.40/health
|
|
```
|
|
|
|
**Common causes:**
|
|
|
|
- Host out of disk space: `df -h`
|
|
- Docker daemon stopped: `systemctl status docker`
|
|
- Container restart loop: `docker ps -a --filter "status=exited"`
|
|
- Resource exhaustion (OOM): `dmesg | grep -i oom`
|
|
|
|
**Mitigation:**
|
|
|
|
- Restart stack: `docker compose -f docker-compose.prod.yml up -d`
|
|
- Free disk: `docker system prune -f`
|
|
- Check logs per service: `docker logs linearvoid-<service> --tail 100`
|
|
|
|
## 3. Playout Progression (HLS)
|
|
|
|
**Symptoms:** Viewer sees slate or buffering, playlist not advancing.
|
|
|
|
```bash
|
|
# Check playout health
|
|
curl http://192.168.88.40:8081/health
|
|
# Response includes "mode": "live" or "slate"
|
|
|
|
# Check HLS output
|
|
curl -I http://192.168.88.40/hls/playlist.m3u8
|
|
ls -la data/hls/
|
|
|
|
# Check playout logs
|
|
docker logs linearvoid-playout --tail 100
|
|
```
|
|
|
|
**Common causes:**
|
|
|
|
- FFmpeg crash → slate fallback active (health shows `degraded`)
|
|
- Playlist file empty/missing: `cat data/playlist/playlist.txt`
|
|
- Media file missing from playlist: `ls data/media/`
|
|
- Disk full → HLS segments can't write
|
|
|
|
**Mitigation:**
|
|
|
|
- Verify playlist has valid entries
|
|
- Check media files exist at paths in playlist
|
|
- Restart playout: `docker compose restart playout`
|
|
- Generate demo playlist if empty: see `backend/playout/start-playout.sh`
|
|
|
|
## 4. Chat Connectivity (WebSocket)
|
|
|
|
**Symptoms:** Chat not loading, messages not sending, presence broken.
|
|
|
|
```bash
|
|
# Check chat health
|
|
curl http://192.168.88.40:3000/health
|
|
|
|
# Test WebSocket
|
|
wscat -c ws://192.168.88.40/ws?username=test&room=main
|
|
|
|
# Check chat logs
|
|
docker logs linearvoid-chat --tail 100
|
|
```
|
|
|
|
**Common causes:**
|
|
|
|
- Redis down → presence/rate-limiting degraded (chat still works)
|
|
- Database down → messages not persisting
|
|
- Port not exposed: `docker port linearvoid-chat`
|
|
|
|
**Mitigation:**
|
|
|
|
- Restart chat: `docker compose restart chat`
|
|
- Check Redis: `docker exec linearvoid-redis redis-cli ping`
|
|
- Check DB: `docker exec linearvoid-db pg_isready -U linearvoid`
|
|
- Chat works without Redis (graceful degradation) — check logs for "Redis connection warning"
|
|
|
|
## 5. Data-Plane (Redis/DB)
|
|
|
|
**Symptoms:** Chat works but no persistence/presence, admin stats empty.
|
|
|
|
```bash
|
|
# Redis
|
|
docker exec linearvoid-redis redis-cli ping
|
|
docker exec linearvoid-redis redis-cli info memory
|
|
|
|
# PostgreSQL
|
|
docker exec linearvoid-db pg_isready -U linearvoid
|
|
docker exec linearvoid-db psql -U linearvoid -c "SELECT count(*) FROM messages;"
|
|
```
|
|
|
|
**Common causes:**
|
|
|
|
- Redis OOM (check `maxmemory` setting)
|
|
- PostgreSQL connection limit reached
|
|
- Disk full on volume mount
|
|
|
|
**Mitigation:**
|
|
|
|
- Redis: `docker compose restart redis` (AOF persist enabled)
|
|
- PostgreSQL: `docker compose restart db`
|
|
- Restore from backup: see `scripts/verify-backups.sh` for procedure
|
|
|
|
## Escalation
|
|
|
|
| Severity | When | Action |
|
|
| -------- | ------------------------------------ | -------------------------------------------------- |
|
|
| Critical | Slate active >30min, complete outage | Trigger DR plan, provision fallback host |
|
|
| Warning | Redis down, high CPU >30min | Investigate during business hours, restart service |
|
|
| Info | Single service blip | Monitor, no action unless recurring |
|
|
|
|
## Post-Incident
|
|
|
|
1. Document timeline in incident channel
|
|
2. Identify root cause
|
|
3. Add prevention to docs if actionable
|
|
4. Update this runbook if new failure mode discovered
|
|
|
|
**Recovery targets:** RPO ≤24h, RTO ≤60min. Quarterly DR drill: simulate host loss, restore from backup.
|