# Migration Checklist — New GTHost Detroit Server

**New hardware:** Supermicro 2029TP-HTR, Intel Gold 6152 22c/44t, 192GB DDR4, 2x1.92TB SSD  
**Target OS:** Proxmox 9 (fallback: Proxmox 8 if issues)  
**Old server:** Denver, Silver 4116, $103/mo → cancel after migration confirmed

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## Pre-Migration

- [ ] Verify PBS backup is current and all VMs/containers have recent backups
- [ ] Note all VM IDs and names from current Proxmox
- [ ] Note VLAN/bridge config from current OPNsense setup
- [ ] Export OPNsense config (both routers) — System → Configuration → Backups

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## Phase 1 — New Server Setup (est. 2-4 hrs)

- [ ] GTHost provisions server (5-15 mins)
- [ ] Install Proxmox 9 via GTHost panel
- [ ] Initial Proxmox config:
  - [ ] Set hostname
  - [ ] Configure network bridges to match current layout
  - [ ] Set up VLANs
- [ ] Add new server as additional node or standalone in PBS
- [ ] Verify PBS can see backup repository

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## Phase 2 — Restore VMs (est. 2-4 hrs)

Restore in this order — networking first:

- [ ] OPNsense core router (VM)
- [ ] OPNsense zpack router (VM)
- [ ] zlh-dns (Technitium)
- [ ] zlh-proxy (Traefik core)
- [ ] zlh-zpack-proxy (Traefik game/dev edge)
- [ ] zlh-monitor (Prometheus/Grafana)
- [ ] zlh-artifacts
- [ ] zpack-api
- [ ] zpack-portal
- [ ] zlh-velocity (Minecraft proxy)
- [ ] zlh-back (PBS — if moving)
- [ ] Game/dev containers

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## Phase 3 — Verification (est. 2-4 hrs)

- [ ] Internal networking between VMs working
- [ ] Portal loads
- [ ] API responds
- [ ] Twingate connector online — update connector to new server if needed
- [ ] Dev container provisions and browser IDE loads
- [ ] Game server provisions and Minecraft connects via Velocity
- [ ] PBS backup runs successfully on new host
- [ ] Monitoring shows all services

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## Phase 4 — DNS Cutover (est. 30 mins)

- [ ] Update Cloudflare A record for Velocity public IP
- [ ] Update Cloudflare SRV records for Minecraft
- [ ] Update any other DNS records pointing to old server IPs
- [ ] Monitor for issues — 30 min observation window
- [ ] Confirm everything stable

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## Phase 5 — Cleanup

- [ ] Cancel old Denver server (or let expire)
- [ ] Update PROJECT_CONTEXT.md with new VM map and IPs
- [ ] Update OPEN_THREADS.md — mark migration complete

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## Notes

- Everything runs on private IPs internally — no hardcoded public IP dependencies
- DNS cutover is the only external change
- Worst case: reinstall Proxmox 8 and repeat
- IPMI available via GTHost panel for out-of-band access if needed
- Proxmox 9 ships with kernel 6.14, LXC 6.0 — no API changes required