452 lines
12 KiB
Markdown
452 lines
12 KiB
Markdown
# Infrastructure Improvement Recommendations
|
|
|
|
Based on the infrastructure audit checklist, this document outlines recommended improvements for security, reliability, and operational efficiency.
|
|
|
|
## Table of Contents
|
|
- [High Priority Improvements](#high-priority-improvements)
|
|
- [Security Enhancements](#security-enhancements)
|
|
- [Reliability & Availability](#reliability--availability)
|
|
- [Monitoring & Observability](#monitoring--observability)
|
|
- [Automation Opportunities](#automation-opportunities)
|
|
- [Documentation & Knowledge Management](#documentation--knowledge-management)
|
|
- [Capacity Planning](#capacity-planning)
|
|
- [Cost Optimization](#cost-optimization)
|
|
|
|
---
|
|
|
|
## High Priority Improvements
|
|
|
|
### 1. Implement Automated Backups
|
|
|
|
**Current State**: Manual or ad-hoc backups
|
|
**Target State**: Automated, scheduled backups with verification
|
|
|
|
**Action Items**:
|
|
- [ ] Set up automated Proxmox VM/Container backups (see `scripts/backup-proxmox.sh`)
|
|
- [ ] Configure automatic backup of VPS configurations
|
|
- [ ] Implement off-site backup sync (to cloud storage or remote location)
|
|
- [ ] Schedule regular backup restoration tests
|
|
- [ ] Set up backup monitoring and alerting
|
|
|
|
**Priority**: 🔴 Critical
|
|
**Estimated Effort**: 4-8 hours
|
|
**Benefits**: Data loss prevention, faster disaster recovery
|
|
|
|
---
|
|
|
|
### 2. SSL Certificate Auto-Renewal
|
|
|
|
**Current State**: Manual certificate management
|
|
**Target State**: Automated certificate renewal with monitoring
|
|
|
|
**Action Items**:
|
|
- [ ] Install and configure certbot with auto-renewal
|
|
- [ ] Set up certbot systemd timer: `systemctl enable certbot.timer`
|
|
- [ ] Configure renewal hooks to reload services
|
|
- [ ] Monitor certificate expiration dates
|
|
- [ ] Consider wildcard certificates to simplify management
|
|
|
|
**Priority**: 🔴 Critical
|
|
**Estimated Effort**: 2-4 hours
|
|
**Benefits**: Prevent service outages from expired certificates
|
|
|
|
**Implementation**:
|
|
```bash
|
|
# Enable auto-renewal
|
|
sudo systemctl enable certbot.timer
|
|
sudo systemctl start certbot.timer
|
|
|
|
# Test renewal
|
|
sudo certbot renew --dry-run
|
|
|
|
# Add renewal hook for Pangolin
|
|
echo "systemctl reload pangolin" | sudo tee /etc/letsencrypt/renewal-hooks/deploy/reload-pangolin.sh
|
|
sudo chmod +x /etc/letsencrypt/renewal-hooks/deploy/reload-pangolin.sh
|
|
```
|
|
|
|
---
|
|
|
|
### 3. Implement Basic Monitoring
|
|
|
|
**Current State**: No centralized monitoring
|
|
**Target State**: Uptime monitoring with alerts for critical services
|
|
|
|
**Action Items**:
|
|
- [ ] Deploy Uptime Kuma for service monitoring (lightweight, easy to set up)
|
|
- [ ] Configure health checks for all public services
|
|
- [ ] Set up alerting (email, SMS, or Slack)
|
|
- [ ] Monitor VPS resources (CPU, RAM, disk)
|
|
- [ ] Monitor Proxmox node resources
|
|
- [ ] Track Gerbil tunnel status
|
|
|
|
**Priority**: 🟠 High
|
|
**Estimated Effort**: 4-6 hours
|
|
**Benefits**: Early detection of issues, reduced downtime
|
|
|
|
See [MONITORING.md](MONITORING.md) for detailed setup instructions.
|
|
|
|
---
|
|
|
|
## Security Enhancements
|
|
|
|
### 4. Harden SSH Access
|
|
|
|
**Recommendations**:
|
|
- [ ] Disable password authentication (key-only)
|
|
- [ ] Change default SSH port on VPS
|
|
- [ ] Implement fail2ban for brute force protection
|
|
- [ ] Use SSH certificate authority for easier key management
|
|
- [ ] Enable 2FA for SSH (Google Authenticator)
|
|
|
|
**Implementation**:
|
|
```bash
|
|
# /etc/ssh/sshd_config
|
|
PasswordAuthentication no
|
|
PubkeyAuthentication yes
|
|
PermitRootLogin prohibit-password
|
|
Port 2222 # Non-standard port
|
|
|
|
# Install fail2ban
|
|
sudo apt install fail2ban
|
|
sudo systemctl enable fail2ban
|
|
```
|
|
|
|
**Priority**: 🟠 High
|
|
**Estimated Effort**: 2-3 hours
|
|
|
|
---
|
|
|
|
### 5. Implement Network Segmentation
|
|
|
|
**Current State**: Flat network
|
|
**Target State**: VLANs separating different service tiers
|
|
|
|
**Recommendations**:
|
|
- [ ] VLAN 10: Management (Proxmox, OMV admin interfaces)
|
|
- [ ] VLAN 20: Production Services
|
|
- [ ] VLAN 30: Development/Testing
|
|
- [ ] VLAN 40: IoT/Untrusted devices
|
|
- [ ] Configure firewall rules between VLANs
|
|
|
|
**Priority**: 🟡 Medium
|
|
**Estimated Effort**: 8-12 hours
|
|
**Benefits**: Improved security, network isolation, easier troubleshooting
|
|
|
|
---
|
|
|
|
### 6. Secrets Management
|
|
|
|
**Current State**: Credentials in config files or documentation
|
|
**Target State**: Centralized secrets management
|
|
|
|
**Recommendations**:
|
|
- [ ] Use environment variables for sensitive data
|
|
- [ ] Implement Bitwarden/Vaultwarden for password management
|
|
- [ ] Consider HashiCorp Vault for API keys and certificates
|
|
- [ ] Encrypt sensitive files with GPG or age
|
|
- [ ] Never commit secrets to git
|
|
|
|
**Priority**: 🟠 High
|
|
**Estimated Effort**: 4-6 hours
|
|
|
|
---
|
|
|
|
### 7. Regular Security Updates
|
|
|
|
**Recommendations**:
|
|
- [ ] Enable unattended-upgrades for security patches
|
|
- [ ] Schedule monthly maintenance windows for updates
|
|
- [ ] Subscribe to security mailing lists for critical software
|
|
- [ ] Implement vulnerability scanning
|
|
|
|
**Implementation**:
|
|
```bash
|
|
# Enable automatic security updates
|
|
sudo apt install unattended-upgrades
|
|
sudo dpkg-reconfigure --priority=low unattended-upgrades
|
|
```
|
|
|
|
**Priority**: 🟠 High
|
|
**Estimated Effort**: 2-3 hours
|
|
|
|
---
|
|
|
|
## Reliability & Availability
|
|
|
|
### 8. Implement High Availability for Critical Services
|
|
|
|
**Recommendations**:
|
|
- [ ] Run critical services on both Proxmox nodes
|
|
- [ ] Set up floating IP or load balancing
|
|
- [ ] Configure automatic failover
|
|
- [ ] Use Proxmox HA features for critical VMs
|
|
|
|
**Priority**: 🟡 Medium
|
|
**Estimated Effort**: 8-16 hours
|
|
|
|
---
|
|
|
|
### 9. Backup VPS Provider Relationship
|
|
|
|
**Recommendations**:
|
|
- [ ] Document procedures for spinning up with alternate VPS provider
|
|
- [ ] Keep configuration backups accessible outside primary VPS
|
|
- [ ] Test VPS migration annually
|
|
- [ ] Consider multi-region deployment for critical services
|
|
|
|
**Priority**: 🟡 Medium
|
|
**Estimated Effort**: 4-6 hours
|
|
|
|
---
|
|
|
|
### 10. UPS and Power Management
|
|
|
|
**Recommendations**:
|
|
- [ ] Install UPS on all Proxmox nodes
|
|
- [ ] Configure Network UPS Tools (NUT) for graceful shutdown
|
|
- [ ] Test power failure procedures
|
|
- [ ] Document power-on sequence after outage
|
|
|
|
**Priority**: 🟠 High (if not already implemented)
|
|
**Estimated Effort**: 3-4 hours (plus hardware cost)
|
|
|
|
---
|
|
|
|
## Monitoring & Observability
|
|
|
|
### 11. Comprehensive Monitoring Stack
|
|
|
|
**Recommendations**:
|
|
- [ ] Deploy Prometheus for metrics collection
|
|
- [ ] Set up Grafana for visualization
|
|
- [ ] Configure Loki for log aggregation
|
|
- [ ] Implement Alertmanager for alerting
|
|
- [ ] Create dashboards for key metrics
|
|
|
|
**Dashboards to Create**:
|
|
- VPS resource utilization
|
|
- Proxmox cluster overview
|
|
- Storage capacity trends
|
|
- Service uptime and response times
|
|
- Gerbil tunnel status
|
|
|
|
**Priority**: 🟡 Medium
|
|
**Estimated Effort**: 12-16 hours
|
|
**See**: [MONITORING.md](MONITORING.md)
|
|
|
|
---
|
|
|
|
### 12. Centralized Logging
|
|
|
|
**Recommendations**:
|
|
- [ ] Aggregate logs from all services to central location
|
|
- [ ] Implement log retention policies
|
|
- [ ] Set up log-based alerts for errors
|
|
- [ ] Create log analysis dashboards
|
|
|
|
**Priority**: 🟡 Medium
|
|
**Estimated Effort**: 6-8 hours
|
|
|
|
---
|
|
|
|
## Automation Opportunities
|
|
|
|
### 13. Infrastructure as Code
|
|
|
|
**Current State**: Manual configuration
|
|
**Target State**: Automated, version-controlled infrastructure
|
|
|
|
**Recommendations**:
|
|
- [ ] Document VPS setup as Ansible playbooks
|
|
- [ ] Use Terraform for DNS and cloud resources
|
|
- [ ] Create Proxmox VM templates with cloud-init
|
|
- [ ] Version control all automation
|
|
|
|
**Priority**: 🟡 Medium
|
|
**Estimated Effort**: 16-24 hours
|
|
**Benefits**: Reproducible infrastructure, faster recovery, documentation
|
|
|
|
---
|
|
|
|
### 14. Automated Health Checks
|
|
|
|
**Recommendations**:
|
|
- [ ] Create scheduled health check scripts (see `scripts/health-check.sh`)
|
|
- [ ] Automated service restart on failure
|
|
- [ ] Self-healing for common issues
|
|
- [ ] Integration with monitoring system
|
|
|
|
**Priority**: 🟡 Medium
|
|
**Estimated Effort**: 4-6 hours
|
|
|
|
---
|
|
|
|
### 15. Certificate Management Automation
|
|
|
|
**Recommendations**:
|
|
- [ ] Automate certificate deployment to all services
|
|
- [ ] Automated service reloads after certificate renewal
|
|
- [ ] Certificate expiration monitoring
|
|
- [ ] Automated DNS validation for wildcard certs
|
|
|
|
**Priority**: 🟠 High
|
|
**Estimated Effort**: 3-4 hours
|
|
|
|
---
|
|
|
|
## Documentation & Knowledge Management
|
|
|
|
### 16. Living Documentation
|
|
|
|
**Current State**: Basic documentation
|
|
**Target State**: Comprehensive, up-to-date documentation
|
|
|
|
**Action Items**:
|
|
- [x] Complete infrastructure audit checklist
|
|
- [x] Create RUNBOOK.md with operational procedures
|
|
- [x] Create DISASTER-RECOVERY.md
|
|
- [x] Create SERVICES.md
|
|
- [ ] Fill in all service details in SERVICES.md
|
|
- [ ] Document network topology diagram
|
|
- [ ] Create quick reference cards for common tasks
|
|
- [ ] Schedule quarterly documentation reviews
|
|
|
|
**Priority**: 🟠 High
|
|
**Estimated Effort**: Ongoing
|
|
|
|
---
|
|
|
|
### 17. Runbook Automation
|
|
|
|
**Recommendations**:
|
|
- [ ] Convert manual procedures to scripts where possible
|
|
- [ ] Create interactive troubleshooting guides
|
|
- [ ] Document lessons learned from incidents
|
|
- [ ] Share knowledge across team
|
|
|
|
**Priority**: 🟡 Medium
|
|
**Estimated Effort**: Ongoing
|
|
|
|
---
|
|
|
|
## Capacity Planning
|
|
|
|
### 18. Resource Monitoring and Trending
|
|
|
|
**Recommendations**:
|
|
- [ ] Track resource utilization over time
|
|
- [ ] Set up alerts for capacity thresholds (80%, 90%)
|
|
- [ ] Create capacity planning reports
|
|
- [ ] Plan for growth based on trends
|
|
|
|
**Metrics to Track**:
|
|
- CPU utilization per node
|
|
- RAM usage per node
|
|
- Storage growth rate (OMV)
|
|
- Network bandwidth utilization
|
|
- Number of VMs/containers
|
|
|
|
**Priority**: 🟡 Medium
|
|
**Estimated Effort**: 4-6 hours (plus ongoing)
|
|
|
|
---
|
|
|
|
### 19. Resource Right-Sizing
|
|
|
|
**Recommendations**:
|
|
- [ ] Review VM/container resource allocations
|
|
- [ ] Identify over-provisioned VMs
|
|
- [ ] Identify resource-constrained VMs
|
|
- [ ] Adjust allocations based on actual usage
|
|
|
|
**Priority**: 🟢 Low
|
|
**Estimated Effort**: 2-4 hours
|
|
|
|
---
|
|
|
|
## Cost Optimization
|
|
|
|
### 20. VPS Cost Review
|
|
|
|
**Recommendations**:
|
|
- [ ] Compare current VPS pricing with alternatives
|
|
- [ ] Consider reserved instances or annual billing
|
|
- [ ] Evaluate if all VPS resources are utilized
|
|
- [ ] Review bandwidth usage and overage costs
|
|
|
|
**Priority**: 🟢 Low
|
|
**Estimated Effort**: 2-3 hours
|
|
|
|
---
|
|
|
|
### 21. Power Consumption Optimization
|
|
|
|
**Recommendations**:
|
|
- [ ] Enable CPU power management features
|
|
- [ ] Schedule non-critical services for off-peak hours
|
|
- [ ] Consider shutting down development VMs overnight
|
|
- [ ] Monitor power consumption
|
|
|
|
**Priority**: 🟢 Low
|
|
**Estimated Effort**: 3-4 hours
|
|
|
|
---
|
|
|
|
## Implementation Roadmap
|
|
|
|
### Phase 1: Critical (Weeks 1-2)
|
|
1. Automated backups with off-site storage
|
|
2. SSL certificate auto-renewal
|
|
3. SSH hardening and fail2ban
|
|
4. Basic uptime monitoring
|
|
|
|
### Phase 2: High Priority (Weeks 3-6)
|
|
1. Comprehensive monitoring stack
|
|
2. Security updates automation
|
|
3. Secrets management
|
|
4. Documentation completion
|
|
5. Health check automation
|
|
|
|
### Phase 3: Medium Priority (Weeks 7-12)
|
|
1. Network segmentation with VLANs
|
|
2. High availability for critical services
|
|
3. Infrastructure as Code implementation
|
|
4. Centralized logging
|
|
5. Capacity planning processes
|
|
|
|
### Phase 4: Ongoing
|
|
1. Regular security audits
|
|
2. Documentation maintenance
|
|
3. Performance optimization
|
|
4. Cost reviews
|
|
5. DR testing
|
|
|
|
---
|
|
|
|
## Success Metrics
|
|
|
|
Track the following to measure improvement:
|
|
|
|
| Metric | Current | Target |
|
|
|--------|---------|--------|
|
|
| Mean Time To Recovery (MTTR) | _____ | < 1 hour |
|
|
| Backup success rate | _____ | 100% |
|
|
| Service uptime | _____ | 99.9% |
|
|
| Certificate renewal failures | _____ | 0 |
|
|
| Security patches applied within | _____ | 7 days |
|
|
| Unplanned outages per month | _____ | < 1 |
|
|
| Time to detect issues | _____ | < 5 minutes |
|
|
|
|
---
|
|
|
|
## Notes
|
|
|
|
- Prioritize improvements based on your specific needs and risk tolerance
|
|
- Review and update this document quarterly
|
|
- Track implementation progress
|
|
- Measure impact of improvements
|
|
|
|
**Last Updated**: _____________
|
|
**Next Review**: _____________
|
|
**Version**: 1.0
|