docs: rename docs/ -> serverAppConfigs-docs/ per system-wide PROJECTNAME-docs convention
All in-repo path references (AGENTS.md, README, old scripts, report artifacts,
test code paths) rewritten in the same commit; focused-test map extended for
.gitignore, old/scripts/*, dankclaw/comfyui/*, and report/* per this repo's
own convention ('add one before committing'). Obsidian wikilinks are
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# OpenWebUI
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OpenWebUI is a self-hosted chat interface for LLMs. It connects to OpenAI-compatible endpoints (vLLM, llama.cpp, Ollama) and adds RAG, plugins, tool calling, and multi-user support.
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**Host:** Dankclaw — **Port:** 3005 (host) → 8080 (container) — **Boot-persistent:** Quadlet — **Docs:** https://github.com/open-webui/open-webui
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## Facts
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| Item | Value |
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|------|-------|
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| Image | `ghcr.io/open-webui/open-webui:main` (CPU build; Dankclaw is CPU-only) |
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| Port | 3005 (host) → 8080 (container). Port 3000 is Gitea's HTTP, so it is not usable. |
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| Data volume | `/home/dank/Containers/open-webui/data` → `/app/backend/data` |
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| Default backend | CIRU llama.cpp on Dankclaw `:7770` = `frank-default-large` (via host LAN IP `192.168.0.143:7770`) |
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| Network | Pinned bridge `systemd-open-webui` (`10.89.3.0/24`, gateway `10.89.3.1`) — see [History](#history) |
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| Persistence | Quadlet unit `open-webui.service`; `[Install] WantedBy=default.target` |
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| Deploy | `scripts/deploy-open-webui-quadlet.sh dankclaw` |
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## The LLM backends
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The fleet runs two OpenAI-compatible endpoints. This mapping is the **live** state (verified 2026-08-22). Both services listen on `:7770`, distinguished by host. On 2026-08-22 `frank-default-large` moved from `:52625` to `:7770`.
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| Endpoint | Model name | Host | Capability |
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|----------|-----------|------|-----------|
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| `:7770` (CIRU llama.cpp) | `frank-default-large` | Dankclaw | completion |
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| `:7770` (llama.cpp) | `frank-default-small` | Dankserver | completion, multimodal |
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The default connection points at the local vLLM (`frank-default-large`), so chat stays on-host. To add the other backend, open **Admin → Connections** in the UI and point an OpenAI connection at `http://192.168.0.235:7770/v1` (key `none`).
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> Both endpoints are bare-metal systemd services managed by this repository (the former `vllmScripts` repo, merged in 2026-08-22). Model swaps, context sizing, and spec tuning happen here. See the [LLM knowledge base](../LLM/index.md).
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## Boot persistence (Quadlet)
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The unit lives at `dankclaw/open-webui/quadlet/open-webui.container`. On the host it installs to `~/.config/containers/systemd/open-webui.container`. The generator turns it into `open-webui.service`. Because the unit sets `[Install] WantedBy=default.target` and user linger is on, it starts at boot. `systemctl --user is-enabled open-webui.service` reports `generated` (the quadlet boot-start state).
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## Volumes
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| Container path | Host path |
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|----------------|-----------|
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| `/app/backend/data` | `/home/dank/Containers/open-webui/data` |
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The data dir holds the database, RAG indexes, and uploads. The deploy script creates it if missing and preserves it across reruns.
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## Healthcheck
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The quadlet carries a built-in healthcheck (30s interval, 3 retries, 300s start period). It checks two things from inside the container:
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1. **App liveness** — `GET http://127.0.0.1:8080/health` returns 200 (`{"status":true}`).
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2. **Network liveness** — a non-loopback interface exists in `/sys/class/net`. The dead-tap zombie state (History) leaves only `lo` behind, and this is the check that catches it.
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`podman ps` shows the container as `unhealthy` if either fails. Probe manually at `http://dankclaw:3005/health`.
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## Retired instances
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- The compose `open-webui` service (port 3000) was never run: 3000 is Gitea's HTTP port, so it could not bind.
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- The bare-container `open-webui` on Dankserver (port 3000) pointed at a dead backend (`:9090`) and was removed. Its data dir is preserved on Dankserver in case it is needed.
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- The bare-container `searxng` on Dankserver (port 8081) was removed. SearXNG now runs only on Dankclaw behind Caddy.
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## Gotchas
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- Use the non-CUDA image on this CPU-only host.
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- The default admin account is created on first login; secure it immediately.
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- If the backend is loading (3–8 minute model load), OpenWebUI shows connection errors until the model is ready.
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- The LLM is reached via the host LAN IP `192.168.0.143:7770`, not the bridge gateway: the gateway (`10.89.3.1`) lives in the rootless netns, while llama-server runs in the host netns, so the gateway refuses. `host.containers.internal` is slirp4netns-only and does not resolve on a bridge either. To reach the Dankserver backend, use the LAN address `192.168.0.235:7770`.
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## History
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- **2026-08-22 — slirp4netns → pinned bridge.** The unit ran on `Network=slirp4netns`. The slirp4netns helper process died (no OOM, no kill entry, no crash log found), and the container kept running with only `lo` in its netns: published port 3005 accepted TCP and reset every request, so chat served empty responses for ~2 days. Nothing logged an error. Moving to a kernel bridge removes the per-container helper entirely, and the healthcheck's interface check makes the zombie state visible if it ever returns.
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## See Also
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- [[Dankclaw Stack]]
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- [[Hermes]] — the agent OpenWebUI can talk to
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- [[SearXNG]] — the search engine on this host
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- [LLM knowledge base](../LLM/index.md) — the vLLM and llama.cpp endpoints
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