105 lines
3.1 KiB
Markdown
105 lines
3.1 KiB
Markdown
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# VM Disk Size Recommendations
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## Current Disk Sizes
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- **VM 100 (cloudflare-tunnel)**: 40G
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- **VM 101 (k3s-master)**: 80G
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- **VM 102 (git-server)**: 100G
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- **VM 103 (observability)**: 200G
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## Recommended Disk Sizes
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### VM 100: Cloudflare Tunnel (40G → 20G)
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**Current:** 40G
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**Recommended:** 20G
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**Rationale:**
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- Ubuntu 24.04 base: ~5-8GB
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- cloudflared binary: ~50MB
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- Logs and config: ~1-2GB
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- **Total needed:** ~10-12GB
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- **20G provides:** 2x headroom for logs and updates
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### VM 101: K3s Master (80G → 40G)
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**Current:** 80G
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**Recommended:** 40G
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**Rationale:**
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- Ubuntu 24.04 base: ~5-8GB
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- K3s binaries: ~200MB
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- Container images: ~5-10GB (can grow)
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- etcd data: ~2-5GB (grows with cluster)
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- **Total needed:** ~15-25GB
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- **40G provides:** Good headroom for images and etcd growth
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- **Note:** Can expand later if needed
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### VM 102: Git Server (100G → 50G)
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**Current:** 100G
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**Recommended:** 50G
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**Rationale:**
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- Ubuntu 24.04 base: ~5-8GB
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- Gitea/GitLab: ~2-5GB
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- Repository data: Variable (depends on usage)
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- **Total needed:** ~15-30GB for small-medium repos
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- **50G provides:** Good starting point, can expand later
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- **Note:** If you have large repos, keep 100G or expand later
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### VM 103: Observability (200G → 100G)
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**Current:** 200G
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**Recommended:** 100G
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**Rationale:**
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- Ubuntu 24.04 base: ~5-8GB
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- Prometheus: ~10-30GB (depends on retention)
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- Grafana: ~2-5GB
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- Loki/Logs: ~20-50GB (depends on retention)
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- **Total needed:** ~40-90GB for 7-30 day retention
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- **100G provides:** Good starting point for 7-14 day retention
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- **Note:** Can expand later as metrics/logs grow
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## Summary
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| VM | Current | Recommended | Savings |
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|----|---------|-------------|---------|
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| cloudflare-tunnel | 40G | 20G | -20G |
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| k3s-master | 80G | 40G | -40G |
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| git-server | 100G | 50G | -50G |
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| observability | 200G | 100G | -100G |
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| **Total** | **420G** | **210G** | **-210G** |
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## Benefits of Smaller Disks
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1. **Faster Cloning:** Smaller disks clone faster from template
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2. **Less Storage Used:** Frees up 210GB on Proxmox storage
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3. **Faster Backups:** Smaller disks backup faster
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4. **Cost Savings:** If using paid storage, reduces costs
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5. **Easy Expansion:** Can expand disks later if needed (Proxmox supports online expansion)
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## When to Use Larger Disks
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- **Git Server (100G)**: If you expect large repositories or many repos
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- **Observability (200G)**: If you need 30+ days of metrics/logs retention
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- **K3s Master (80G)**: If you'll store many container images locally
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## Disk Expansion
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Proxmox supports online disk expansion. You can:
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1. Expand via Proxmox web UI
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2. Expand via API
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3. Expand via `qm resize` command
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After expansion, resize the filesystem inside the VM:
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```bash
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sudo growpart /dev/sda 1
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sudo resize2fs /dev/sda1 # for ext4
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# or
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sudo lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv # for LVM
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sudo resize2fs /dev/ubuntu-vg/ubuntu-lv
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```
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## Recommendation
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**Start with smaller sizes (20G, 40G, 50G, 100G)** and expand later if needed. This:
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- Saves storage space
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- Speeds up initial deployment
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- Provides sufficient space for initial operations
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- Allows expansion when actual usage patterns are known
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