📊 Section 20: Performance, Scaling & Cost Estimation¶
🎯 Objective¶
This section provides guidance for adapting the OpenCMMC Stack to support various organizational sizes — from 1-person SBIR teams to 50-person prime contractors. It includes performance tuning tips, scaling recommendations, and rough monthly cost estimates for DigitalOcean, AWS, or on-prem deployments.
🧱 Baseline Configuration (1–5 Users)¶
| Component | Count | Notes |
|---|---|---|
| VM Instances | 1 | 4 vCPU / 8GB RAM minimum |
| Storage Volumes | 2 | App volume + Backup volume |
| Tailscale Devices | 5 | Laptops, phones, tablets |
| Services | All | Same as production stack |
Monthly Estimate (DigitalOcean): $35–55
- $24 droplet + $10 volume + $5 bandwidth
📈 Mid-Tier Scaling (5–25 Users)¶
| Component | Scaling Tips |
|---|---|
| Separate DB Host | Move PostgreSQL to a second droplet |
| External S3 | Store backups in Wasabi or Backblaze |
| HA Reverse Proxy | Consider HAProxy or secondary NGINX |
| Logging Volume | Increase Wazuh retention window to 90d |
| Backup Jobs | Offload to secondary host or cronbox |
Monthly Estimate (DO or AWS): $75–125
- 2 droplets + Object storage + Backup egress
🏢 Large Deployment (25–50+ Users)¶
| Component | Recommendation |
|---|---|
| Podman Networking | Use MACVLAN or custom bridges |
| External Monitoring | Forward Wazuh to SIEM (Elastic/Splunk) |
| Container Registry | Self-host Harbor or use GHCR |
| Storage Redundancy | RAID 1 + offsite Restic |
| MDM Integration | Link with Intune, Jamf, or FleetDM |
| Email Scaling | Consider external SMTP relay or Postfix queue tuning |
Monthly Estimate (Hybrid/on-prem): $200–350
- VM cluster or VPS spread, higher backup costs
⚙️ Performance Tuning¶
- Enable Podman healthchecks and log rotation
- Use Redis caching (for Nextcloud + Keycloak)
- Prune stale containers and old volumes weekly
- Schedule Ansible audits every 7 days
- Keep kernel and container images lean
📉 Cost Optimization Tips¶
| Technique | Benefit |
|---|---|
| Use ARM-based VMs | Lower cloud cost (e.g., C6g, Ampere) |
| Use Tailscale exit nodes | Avoid paid VPN/GW services |
| Host Wazuh UI locally | Skip cloud SIEM tiers |
| Use BorgBackup + rclone | Avoid egress-heavy snapshots |
📜 CMMC Practices Supported¶
| Practice | Description |
|---|---|
| CP.2.120 | Establish and maintain backups |
| MA.2.111 | Schedule maintenance |
| CM.2.066 | System configuration monitoring |
| AU.2.043 | Capacity planning based on logs |
| RA.2.143 | Identify and manage risks |
✅ Next Step¶
With performance and cost scoped, use Appendix A and B for acronyms and additional resources.