# Server Architecture Plan — Independent Audit

**Audited:** July 13, 2026 00:21 EDT  
**Auditor:** Sho'Nuff (Hermes Agent)  
**Purpose:** Review approved architecture, identify gaps, present to unbiased 3rd‑party reviewer  
**Scope:** Full architecture ...

Legend for all following sections:

| Symbol | Meaning |
|---|---:|
| ✅ | Sound / no issue found |
| ⚠️ | Concern — needs discussion or mitigation |
| ❌ | Flaw — contradicts stated goal or creates risk |
| — | Not applicable / excluded by directive |

---

## 1. Guiding Principles (from User Memory / Context)

| Principle | Source |
|---|---|
| Fault isolation matters — no all-in-one servers | Memory |
| Reliability / performance > savings | Memory |
| No single points of failure | Memory |
| Offline recovery capability required | Memory |
| Provider diversity for DR | Memory |
| Uptime / restorability > cost / convenience | Memory |
| Model / API spend now a real constraint | Memory |
| Clean direct solutions over proxy hops | Memory |
| Do only what is asked; no scope creep | Memory |
| Everything not needed for Hermes runtime should move off Core | This request |
| Ollama excluded from plan entirely | This request |
| Plan must survive independent 3rd‑party review | This request |

---

## 2. Current Live State (observed Jul 13 00:21 EDT)

### 2.1 Core (152.53.192.33 — RS 2000 G12)

| Resource | Value |
|---|---:|
| vCPU | 8 (non-dedicated) |
| RAM | 15 GB |
| Disk | 503 GB (16% used, ~406 GB free) |
| Docker | 11 containers running |
| systemd services | 33 running |

**Docker containers on Core:**

| Container | Purpose | Needed for Hermes to function? |
|---|---|---|
| vaultwarden | Password vault | No |
| komodo-core-1 + komodo-mongo-1 | Docker management | No |
| prometheus | Metrics | No |
| grafana | Dashboards | No |
| twenty-server-1 + twenty-worker-1 + twenty-db-1 + twenty-redis-1 | CRM (Twenty) | No |
| docuseal | Document signing | No |
| searxng | Meta-search engine | No (Super Search uses it but runs as separate service) |

**systemd services on Core relevant to architecture:**

| Service | Purpose | Needed for Hermes to function? |
|---|---|---|
| hermes.service | Hermes Agent gateway | **Yes** |
| hermes-browser.service | Headless Chromium for browser tool | **Yes** |
| hermes-assistant.service | PWA backend | **Yes** |
| ollama.service | Local LLM server | **No** (to be removed per this directive) |
| caddy.service | Reverse proxy | Partially — only for core.itpropartner.com paths; full Caddy can move |
| ops-portal.service | Ops Portal FastAPI backend | No |
| osint-api.service | OSINT API | No |
| osint-person.service | OSINT Person MCP | **Yes** (runs locally, needed for Hermes) |
| super-search.service | Super Search MCP | **Yes** (runs locally, needed for Hermes) |
| dre-mcp.service | DRE MCP | **Yes** (runs locally, needed for Hermes) |
| twilio-mcp.service | Twilio MCP | **Yes** (runs locally, needed for Hermes) |
| mysql-tunnel.service | MySQL SSH tunnel to Apex DB | **Yes** (needed for mysql MCP tool) |
| shark-game.service | Shark Game backend | No |
| node_exporter.service | Prometheus exporter | No |
| strongswan-starter.service | VPN | No (for remote access; not Hermes-critical) |
| xl2tpd.service | L2TP VPN | No |

**Current Hermes provider/failover chain:**

```text
Primary:   gpt-5.5             via admin-ai (https://admin-ai.itpropartner.com/v1)
Fallback 1: deepseek-v4-pro    via admin-ai
Fallback 2: deepseek/deepseek-chat  via OpenRouter (https://openrouter.ai/api/v1)
Fallback 3: llama3.2:3b        via ollama-local (http://localhost:11434/v1)
```

Delegation (subagent) primary: `deepseek-v4-pro` via admin-ai.

admin-ai.itpropartner.com currently points to: **178.156.167.181 (Hetzner old-ai box).**

### 2.2 app1 (152.53.36.131 — RS 4000 G12)

| Resource | Value |
|---|---:|
| vCPU | 12 dedicated EPYC 9645 |
| RAM | 32 GB |
| Disk | 1 TB (3% used, ~943 GB free) |

Running: Ollama, Open WebUI, n8n + n8n-postgres, Caddy.

### 2.3 app2 (152.53.39.202 — RS 4000 G12)

Running: UNMS/UISP stack, UniFi Controller (deployed Jul 12).

### 2.4 app3 (152.53.241.111 — RS 4000 G12)

Target for WordPress/Apex from SiteGround/wphost02.

### 2.5 core-bu (5.161.114.8 — Hetzner CPX11, was app1-bu)

Warm standby. Hermes gateway dormant. Watchdog checks Core every 5 min. Needs CPX11→CPX31 upgrade for DR capacity.

### 2.6 old-ai (178.156.167.181 — Hetzner CPX41)

Current admin-ai LiteLLM host. 93% disk. Target for decommission.

### 2.7 Remaining Hetzner hosts

| Host | IP | Status |
|---|---|---|
| docker | 178.156.168.35 | To decommission |
| old app1 | 87.99.144.163 | Deprecated |
| unms | 5.161.225.131 | DNS to app2 pending |
| unifi | 143.198.185.17 | DNS updated Jul 12, decom pending |
| hudu | 178.156.130.130 | Ready to migrate |
| fleettracker | 178.156.149.32 | Traccar ready to move |
| wphost02 | 5.161.62.38 | WP to app3 |
| tony-vps | 87.99.159.142 | Keep — Tony's Hermes |

---

## 3. Ollama Audit — Why It Should Be Excluded

Per directive: **"Exclude/strike Ollama from the plan altogether."**

### 3.1 What Ollama provides today

| Function | Model | Reality |
|---|---|---|
| Local LLM fallback | `llama3.2:3b` (2 GB, loaded on demand) | Extremely limited; useful only for "I am alive" pings. Not competent for any real work. |
| Attempted fallback model | `llama3.3:70b` (42 GB disk) | **Cannot load.** Requires ~35-40 GB RAM. Core has 15 GB. This model is wasted disk space and should be deleted immediately regardless of architecture decision. |

### 3.2 Problems with Ollama on Core

| ❌ | Issue |
|---|---|
| ❌ | 42 GB of wasted disk (`llama3.3:70b`) that can never be used |
| ❌ | Creates false sense of security — "we have local fallback" — but the usable model is too dumb for any actual work |
| ❌ | `llama3.2:3b` cannot handle structured JSON, tool calling, code fixes, or even basic email summarization reliably |
| ❌ | RAM pressure: Ollama service consumes RAM even when idle, competing with Hermes gateway + browser + Postgres (future LiteLLM DB) |
| ❌ | Maintenance overhead: model updates, service health checks, logging |
| ❌ | Slows Core boot time |

### 3.3 Verdict

| Verdict |
|---|
| ❌ Ollama should be completely removed from Core. Delete `llama3.3:70b` immediately. Remove `ollama.service`. Remove from failover chain. |
| ❌ `llama3.2:3b` as last-resort fallback is an architectural lie — it creates the impression of resilience while providing no practical value. If all remote providers fail, Hermes should report "all providers exhausted" rather than silently degrading to a model that cannot perform any task. |

---

## 4. Replacement Models for Low-Lift Tasks

Per directive: **"Present other model options for low-lift tasks that Ollama could handle."**

### 4.1 What "low-lift" means in practice

Ollama was supposed to handle:
- Survival pings (acknowledge a message exists)
- Very basic classification (is this email spam?)
- Simple summarization of short text
- "I'm alive" health checks

None of these require a local model. They can be handled by dirt-cheap remote APIs with far better results.

### 4.2 Cheapest available APIs (Jul 2026)

From live pricing research:

| Model | Provider | Input/1M | Output/1M | Context | Notes |
|---|---:|---:|---:|---:|---|
| **GPT-4.1 Nano** | OpenAI/OpenRouter | $0.10 | $0.40 | 1M | Cheapest competent model; good enough for classification/light summarization |
| **Gemini 2.0 Flash / Flash-Lite** | Google/OpenRouter | $0.10 | $0.40 | 1M | Free tier available; multimodal |
| **DeepSeek V4 Flash** | DeepSeek direct | $0.14 | $0.28 | 1M | Already in admin-ai; cheaper than Ollama electricity |
| **Mistral Small** | Mistral/OpenRouter | $0.10 | $0.30 | 128K | Good for classification |
| **GLM-4.7-Flash** | Z.ai | **Free** | **Free** | 128K | Actually free tier; limited but usable |
| **GLM-4.6V-Flash** | Z.ai | **Free** | **Free** | — | Free vision model |
| **Qwen Qwen3-Flash** | Alibaba/OpenRouter | $0.07 | $0.14 | 32K | Ultra cheap |
| **Llama 3.1 8B** | Various/OpenRouter | $0.05–$0.10 | $0.05–$0.20 | 128K | Open model, many providers; dirt cheap |

### 4.3 Recommended replacement tier

| Tier | Model | Route | Cost estimate | Use case |
|---|---:|---|---|---|
| **Survival ping** | `deepseek-v4-flash` | admin-ai | ~$0.14/M input | Already has access; extremely cheap; 1M context; way better than llama3.2:3b |
| **Cheapest possible** | `openrouter/qwen/qwen3-flash` | OpenRouter | ~$0.07/$0.14 | Classification, trivial summarization |
| **Free option** | `openrouter/z-ai/glm-4.7-flash` | OpenRouter | Free | Low-risk cron jobs, health checks, zero-cost classification |
| **When admin-ai is down** | `openrouter/deepseek/deepseek-chat` | OpenRouter | ~$0.14/$0.28 | Already in fallback chain; keep |
| **When OpenRouter is also down** | Report "all providers exhausted" | — | — | Honest failure > silent useless degradation |

### 4.4 Cost comparison: Ollama vs cheapest API

| Scenario | Ollama cost | API cost |
|---|---|---|
| Per month electricity/RAM | ~$5–$10 (portion of VPS cost for RAM + CPU cycles) | ~$0.01–$0.50 for all survival-ping volume |
| Quality | Unusable for real work | Usable for light tasks |
| Maintenance | Updates, service management, disk cleanup | Zero |
| Disk | 2–42 GB wasted | Zero |

**Verdict:** The cheapest API is economically better AND qualitatively better than Ollama for every single use case that Ollama was supposed to cover.

### 4.5 The honest fallback design

Remove the survival-model pretense:

```text
Fallback 1: deepseek-v4-pro          via admin-ai          (different model, same provider)
Fallback 2: deepseek/deepseek-chat    via OpenRouter        (different provider)
Fallback 3: deepseek-v4-flash         via admin-ai          (cheapest competent fallback)
Fallback 4: openrouter/qwen/qwen3-flash via OpenRouter       (dirt cheap, still better than Ollama)
Fallback 5: openrouter/z-ai/glm-4.7-flash via OpenRouter     (free tier — zero cost last resort)
```

Or, simpler:

```text
Fallback 1: deepseek-v4-pro          via admin-ai
Fallback 2: deepseek-v4-flash        via admin-ai
Fallback 3: deepseek/deepseek-chat   via OpenRouter
Fallback 4: openrouter/qwen/qwen3-flash via OpenRouter
```

When all are exhausted: Hermes reports "All providers exhausted. Check admin-ai and OpenRouter status." No silent degradation.

---

## 5. Architecture Audit — Original Plan vs Reality

### 5.1 The approved rebalance plan

From `server-architecture-plan` (rebalanced Jul 12):

```text
Core:   Hermes + LiteLLM + Ollama fallback
app1:   Caddy (all domains), Ops Portal, OSINT API, Super Search MCP,
        SearXNG, Grafana, cron, n8n + Postgres, Docker services
app2:   UNMS/UISP, UniFi Controller, Hudu (target), Traccar (target)
app3:   WordPress / web apps
core-bu: Warm standby
```

### 5.2 Problems found

#### 5.2.1 ❌ admin-ai.itpropartner.com DNS cutover risk

**Plan says:** LiteLLM → Core. DNS stays (implied localhost or unchanged).

**Reality:** Today admin-ai.itpropartner.com resolves to 178.156.167.181 (Hetzner old-ai). The `core-rebalance-plan.md` says "admin-ai.itpropartner.com → Core IP (stays)" — but this is contradictory. The domain currently points to old-ai, not Core. Moving LiteLLM to Core means DNS must change, OR Hermes must switch from `admin-ai.itpropartner.com` to `localhost`. The plan does not address this.

**Impact:** If LiteLLM moves to Core and Hermes uses `https://admin-ai.itpropartner.com/v1`, then during the DNS propagation window:
- Hermes on Core tries to reach admin-ai.itpropartner.com
- DNS may still point to old-ai
- Old-ai LiteLLM may already be down
- Result: Hermes falls back to OpenRouter unnecessarily

**Fix:** Either:
- (a) Change Hermes `providers.admin-ai.base_url` to `http://localhost:4000/v1` after LiteLLM is running locally (no DNS dependency), OR
- (b) Switch admin-ai.itpropartner.com DNS to Core IP as a deliberate step in the migration, accepting the propagation window.

Option (a) is cleaner and eliminates DNS as a failure mode for Hermes→admin-ai entirely. The domain `admin-ai.itpropartner.com` would still serve external clients.

#### 5.2.2 ⚠️ core-bu fails over to OpenRouter-only

**Plan says:** core-bu takes over when Core is down.  

**Problem:** If Core hosts LiteLLM, then a Core outage kills both Hermes AND admin-ai simultaneously. core-bu's Hermes would have zero access to admin-ai. It would fall to OpenRouter.

**Is this acceptable?** Yes — IF we accept the tradeoff. But the plan does not acknowledge this explicitly.

**Mitigation:** core-bu should be pre-configured to use OpenRouter as primary during failover. The current standby config already uses admin-ai, which would be dead. This needs an explicit config change for core-bu's Hermes.

#### 5.2.3 ⚠️ RAM on Core with LiteLLM + Postgres

| Component | Estimated RAM |
|---|---:|
| Hermes gateway + browser + assistant | ~2-3 GB |
| LiteLLM + Postgres (Docker) | ~1-2 GB |
| OSINT Person + Super Search + DRE + Twilio MCPs | ~1 GB |
| Caddy (if kept) | ~100 MB |
| MySQL tunnel | ~200 MB |
| System + buffers | ~2 GB |
| Docker daemon | ~500 MB |
| Core Docker services to be evacuated | ~3-4 GB (freed) |
| **Total after evacuation** | **~7-9 GB of 15 GB** |

This is **acceptable but tight**. LiteLLM under load can spike Postgres memory. No headroom for Ollama (which we're removing anyway). No headroom for spikes.

**Recommendation:** Document the RAM budget explicitly. Monitor Postgres memory after migration. Be prepared to add LiteLLM resource limits.

#### 5.2.4 ❌ `core-rebalance-plan.md` is too sparse

The full rebalance plan is only 25 lines. It lacks:
- Rollback steps per phase
- Verification gates between phases
- DNS propagation wait times
- Service dependency ordering
- What to do if a phase fails
- Cron job re-pinning steps
- Anita profile verification step
- Vision model verification step
- Gateway model override check
- S3 sync impact during migration

This is not a reviewable plan. It is an outline.

#### 5.2.5 ⚠️ Caddy on Core is both needed and not needed

Core needs Caddy for:
- `core.itpropartner.com` paths (Vaultwarden, Twenty, DocuSeal, etc.) — but these are moving to app1
- Hermes PWA / browser tool — internal-only? or public?

If all web services move to app1, Core's Caddy becomes only:
- Hermes PWA backend proxy
- Possible browser tool endpoint

**Question:** After rebalance, does Core need a public Caddy at all? If Hermes is internally accessed and all web services are on app1, Core could run with no public ports except SSH and VPN.

#### 5.2.6 ⚠️ MCP services running on Core but serving app1-hosted tools

Super Search depends on SearXNG (Docker container). After rebalance, SearXNG moves to app1. Super Search's server.py references `http://127.0.0.1:8888/search` for SearXNG.

**Impact:** Super Search on Core would be calling app1's SearXNG across the network. This introduces latency and a cross-server dependency where none existed before.

**Fix:** Either:
- (a) Point Super Search's SearXNG URL at app1's internal/private IP, OR
- (b) Keep a minimal SearXNG on Core for Super Search, OR
- (c) Move Super Search MCP to app1 alongside SearXNG

Option (c) is cleanest but then Super Search is not local to Hermes — it would be accessed via MCP over HTTP between servers.

#### 5.2.7 ❌ Ollama is in the plan

Both `server-architecture-plan` and `core-rebalance-plan` reference Ollama as a fallback. Per the directive, this must be removed.

#### 5.2.8 ❌ The plan fails the "fault isolation" principle

Core becomes:
```text
Hermes + LiteLLM + all MCPs + Postgres + Caddy + Tailscale + WireGuard + SSH
```

This is a single box that:
- Runs the agent
- Runs the model proxy
- Runs all MCP tool servers
- Runs the reverse proxy
- Runs the VPN

A Core outage is now a **total outage** — no agent, no model access, no tools, no remote access. Even with core-bu failover, core-bu would have no admin-ai and limited MCP access.

Compare to the alternative:

```text
Core:     Hermes + MCPs (tools only)
app1:     LiteLLM + Caddy + all web services + Super Search + SearXNG + Grafana + cron

Core outage → core-bu takes over Hermes, admin-ai still up on app1
app1 outage → Core Hermes loses admin-ai, falls to OpenRouter; web services down but agent still alive
```

This alternative provides partial degradation. Both boxes must fail simultaneously for a total outage.

---

## 6. Revised Architecture Recommendation

### 6.1 Target roles (Ollama removed)

| Box | Model | Role | Critical for Hermes? |
|---:|---|---|---|
| **Core** | RS 2000 | **Hermes Agent + essential MCPs only** | Yes |
| **app1** | RS 4000 | **LiteLLM (admin-ai) + Caddy (all domains) + Ops Portal + Super Search + SearXNG + OSINT API + Grafana + cron + n8n + Postgres + all Docker services** | Partially — admin-ai is critical; web services are not |
| **app2** | RS 4000 | UNMS/UISP, UniFi, Hudu, Traccar | No |
| **app3** | RS 4000 | WordPress, Apex, web apps | No |
| **core-bu** | CPX31 | Warm standby for Core | Yes (DR) |

### 6.2 Core — keep only what Hermes needs to function

| Keep on Core | Reason |
|---|---|
| hermes.service | Core function |
| hermes-browser.service | Browser tool for Hermes |
| hermes-assistant.service | PWA backend |
| osint-person.service | OSINT Person MCP (local = fast, no cross-server latency) |
| super-search.service | Super Search MCP (local; SearXNG endpoint updated to app1) |
| dre-mcp.service | DRE MCP |
| twilio-mcp.service | Twilio MCP |
| mysql-tunnel.service | MySQL SSH tunnel to Apex DB |
| caddy.service | Only if needed for Hermes PWA; otherwise remove |
| tailscaled.service | Private infrastructure access |
| ssh.service | Administrative access |
| cron.service | System cron |
| docker.service | Only if MCPs containerized; otherwise remove |

| Move off Core → target | Service |
|---|---|
| → app1 | vaultwarden (Docker) |
| → app1 | komodo-core + komodo-mongo (Docker) |
| → app1 | prometheus + grafana (Docker) |
| → app1 | twenty-server + worker + db + redis (Docker) |
| → app1 | docuseal (Docker) |
| → app1 | searxng (Docker) |
| → app1 | ops-portal.service (systemd) |
| → app1 | osint-api.service (systemd) |
| → app1 | shark-game.service (systemd) |
| → app1 | node_exporter.service (systemd) |
| → app1 | caddy.service (systemd — if Core doesn't need it) |
| → Delete | ollama.service + ollama models |
| → Delete | strongswan-starter.service + xl2tpd.service (VPN — replace with Tailscale-only or keep if needed) |

### 6.3 Revised fallback chain (no Ollama)

```text
Primary:      gpt-5.5                via admin-ai (app1)
Fallback 1:   deepseek-v4-pro        via admin-ai (app1)
Fallback 2:   deepseek-v4-flash      via admin-ai (app1)
Fallback 3:   deepseek/deepseek-chat via OpenRouter
Fallback 4:   openrouter/qwen/qwen3-flash via OpenRouter
```

When all exhausted: Hermes reports "All providers exhausted. Check admin-ai and OpenRouter."

### 6.4 Revised DNS plan

| Domain | Current → | Target |
|---|---|---|
| admin-ai.itpropartner.com | 178.156.167.181 (old-ai) | **152.53.36.131 (app1)** |
| ops.itpropartner.com | Core | **app1** |
| core.itpropartner.com | Core | **app1** (all web services move) |
| sign.itpropartner.com | Core | **app1** |
| n8n.itpropartner.com | Already app1 | No change |
| ai.itpropartner.com | Already app1? | No change |

Hermes on Core uses:
```text
providers.admin-ai.base_url = https://admin-ai.itpropartner.com/v1
```

This means admin-ai DNS must point to app1 before Hermes can use it. The DNS cutover for admin-ai is **the critical path**. All other DNS changes can happen independently.

### 6.5 Revised migration phases

#### Phase 0 — Pre-flight (no downtime)

1. Inventory old-ai admin-ai completely
2. Pull LiteLLM image on app1
3. Create LiteLLM docker-compose on app1
4. Dump old-ai Postgres → import to app1
5. Start app1 LiteLLM, test locally
6. Verify all models work through app1 local LiteLLM
7. Verify encrypted provider keys survived (SALT_KEY match)
8. Move non-Hermes Docker services: Core → app1
9. Remove Ollama from Core (stop service, delete models, disable service)

#### Phase 1 — DNS cutover (planned window)

1. Switch Hermes to OpenRouter-only fallback temporarily
2. SiteGround DNS: admin-ai.itpropartner.com → 152.53.36.131
3. Wait for DNS propagation (check from Core: `dig +short admin-ai.itpropartner.com`)
4. Caddy on app1 issues cert for admin-ai.itpropartner.com
5. Verify: `curl https://admin-ai.itpropartner.com/v1/models` from Core
6. Restore Hermes admin-ai primary + full fallback chain
7. Test full model chain: gpt-5.5, deepseek-v4-pro, deepseek-v4-flash

#### Phase 2 — Remaining DNS and service moves

1. Caddy → app1
2. ops.itpropartner.com → app1
3. core.itpropartner.com → app1
4. sign.itpropartner.com → app1
5. Move systemd services (ops-portal, osint-api, shark-game) → app1
6. Move cron jobs → app1 (or re-create on app1)
7. Update Super Search SearXNG URL to app1's SearXNG

#### Phase 3 — Verification

1. Verify Hermes works with new admin-ai (app1)
2. Verify core-bu Hermes standby config
3. Verify all cron jobs
4. Verify Anita profile
5. Verify vision model
6. Verify gateway sessions have no stale model overrides

#### Phase 4 — Stabilization (7 days)

- Keep old-ai running for rollback
- Compare LiteLLM spend logs old vs new
- Monitor Core RAM/CPU after evacuation
- Confirm Caddy cert auto-renewal on app1
- Confirm all MCP tools function

#### Phase 5 — Decommission

- old-ai (178.156.167.181) → cancel
- docker (178.156.168.35) → cancel
- remaining Hetzner hosts → cancel as each service confirms migration

#### Rollback per phase

| Phase | Rollback action |
|---|---|
| Phase 1 | DNS back to old-ai IP; restore Hermes to admin-ai. Insert master key hash into old DB if needed. |
| Phase 2 | DNS back to Core IPs; restart services on Core. |
| Phase 3 | Fix individual failures without full rollback. |
| Phase 4 | If app1 admin-ai unstable, Phase 1 rollback. |

---

## 7. Open Questions for 3rd-Party Review

These are areas where the plan has ambiguity that a reviewer should flag:

1. **Does Core need a public Caddy after all web services move?** If Hermes PWA and browser tool are internal-only, Core could run with SSH + Tailscale only. This simplifies Core dramatically.

2. **Should admin-ai be on Core or app1?** This audit recommends app1 for fault isolation. The user's earlier intuition (Core colocation) favors simplicity. Both arguments are presented above. The reviewer should weigh them.

3. **Is core-bu's CPX11 sufficient for DR if admin-ai moves to app1?** CPX11 has 2 vCPU / 2 GB RAM. Hermes gateway alone may fit, but subagent delegation and browser tools may struggle. The plan notes CPX31 upgrade is needed.

4. **What happens to Super Search if SearXNG moves to app1?** Cross-server dependency is introduced. Should Super Search move to app1 too? Or should a minimal SearXNG stay on Core?

5. **Are the free-tier models (GLM-4.7-Flash) reliable enough for the last fallback tier?** Free tiers can disappear without notice. The plan should include a fallback that doesn't depend on a free tier.

6. **Should VPN (WireGuard/StrongSwan) stay on Core or move?** If Core goes down and VPN is on Core, remote access to the entire infrastructure is lost. VPN on a separate box (or redundant) would be safer.

---

## 8. Summary of Changes from Original Plan

| Original Plan Element | Audit Finding | Revised |
|---|---|---|
| Ollama on Core | Removed entirely | Deleted. Replaced with cheap API fallbacks |
| admin-ai → Core | Risk of single-point failure | admin-ai → app1 |
| Core keeps Caddy + all Docker services | Breaches "Core is lightweight" principle | Move all non-Hermes services to app1 |
| 3-step migration outline | Too sparse; no rollback | 5-phase plan with per-phase rollback |
| DNS plan vague | admin-ai DNS path unclear | Explicit DNS cutover with propagation check |
| Fallback chain ends at Ollama | Useless fallback | Chain ends at cheap-but-competent API, not local model |
| No core-bu config plan | Standby would use dead admin-ai | core-bu must use OpenRouter during Core outage |
| Super Search ↔ SearXNG co-location broken | Cross-server dependency introduced | Explicitly flagged; recommendation to move Super Search to app1 |
| 3-day stabilization | Too short | 7-day stabilization |

---

**End of audit. Ready for 3rd-party review.**