Frank
56dfc6d0b9
The first full scan logged "Invalid data found when processing input" per file and carried on. That line is about the file: the scanner skips it, so the book never appears in the library at all. Census of the 43 refused files: 38 were 0 bytes, 3 held WAV bytes behind a .mp3 name, 2 were unreadable. The check to run first is a byte count, not a server investigation. Full suite: 818 tests, exit 0.
143 lines
8.6 KiB
Markdown
143 lines
8.6 KiB
Markdown
---
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type: reference
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description: "Audiobookshelf on Dankserver: quadlet shape, the read-only array bind, state on the SSD, the API bootstrap, laws."
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tags:
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- dankserver
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- audiobooks
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- quadlet
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timestamp: 2026-11-02
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---
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# Audiobookshelf
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Audiobookshelf (ABS) serves the [[Entropy Volume]] audiobook library to browsers
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and phones: it scans `/mnt/entropy/Audiobooks`, keeps its own SQLite library with
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per-listener playback positions, and streams the audio. It is **not** a media
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server — it shares nothing with [[Plex]] or [[Jellyfin]] and owns no files on the
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array.
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**Host:** Dankserver — **Unit:** `audiobookshelf.service` (rootless Quadlet, user
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manager) — **Internal-only:** LAN address, no vhost, no DNS name.
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## Shape
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| Item | Value |
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|------|-------|
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| Unit file | `dankserver/audiobookshelf/quadlet/audiobookshelf.container` (the authority for every number here) |
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| Image | `ghcr.io/advplyr/audiobookshelf` pinned by **amd64 manifest digest** — see Laws |
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| Port | `Environment=PORT=8000` + `PublishPort=8000:8000` — web UI and API on one port |
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| Base path | `Environment=ROUTER_BASE_PATH=/` — the URL is the plain `host:port`, no `/audiobookshelf` prefix |
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| Network | `pasta` (standalone; publishes nothing to other containers) |
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| Audio bind | `/mnt/entropy/Audiobooks:/audiobooks:ro` — read-only, by design |
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| State | `/home/dank/Containers/audiobookshelf/config` → `/config`, `…/metadata` → `/metadata` (both NVMe) |
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| Mount gate | `ExecStartPre=…/wait-for-mount.sh /mnt/entropy` |
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| Health | `wget` against `/healthcheck` inside the container, 30 s / 3 retries |
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| I/O share | `IOWeight=10` — a scan loses the array to every other tenant |
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| Self-healing | `Restart=always`, `RestartSec=5`, `WantedBy=default.target` |
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| Deploy | `./scripts/deploy.sh dankserver --service audiobookshelf` |
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| Handler | `deploy_audiobookshelf` in `scripts/deploy-remote.sh` |
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## Bootstrap
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`scripts/audiobookshelf-init.sh` — run by the deployer after the health gate, so a
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deployed ABS is a *usable* ABS: `/healthcheck` answers 200 on a server with no
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user, no library and no scan, and nothing else in the deploy notices the
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difference. The script is idempotent; re-running it costs one incremental scan.
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| Step | Door | Printed |
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|------|------|---------|
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| credential | `~/.config/secrets/audiobookshelf` (mode 600, generated once, host-side) | `credential: created …` |
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| account | `POST /init` with `{"newRoot":{"username","password"}}` | `account: created (frank)` / `already registered` |
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| session | `POST /login` → bearer token | `token: obtained (root)` |
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| library | `POST /api/libraries`, folder `/audiobooks`, provider `audiobook` | `library: created Audiobooks (<id>)` / `exists` |
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| scan | `POST /api/libraries/<id>/scan` | `scan: accepted` |
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| proof | `GET /api/libraries/<id>/items?limit=1` | `items: <total>` |
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Sign in at `http://192.168.0.235:8000` as `frank`; the password is
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`awk -F= '/^ABS_ADMIN_PASSWORD=/{print $2}' ~/.config/secrets/audiobookshelf` on
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Dankserver. Change it in **Settings → Users → frank → Password**; the secret file
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then holds a stale value and only matters again if the `config` bind is ever
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destroyed (a fresh DB makes the script create a new owner from it).
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The scan of 1,103 shelves is slow and background; watch `items:` climb from 0,
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never `/healthcheck`. It also reads files that are genuinely broken and logs
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`[AudioFileScanner] Invalid data found when processing input` per file — that is
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the file, not the bind: the same line count grows while the total climbs.
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## Laws
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- **Speak the image's env names, not the README's.** The server reads `PORT`,
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`CONFIG_PATH`, `METADATA_PATH` and `ROUTER_BASE_PATH`; the `ABS_*` family printed
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by the server's own README is the npm package's naming and is **inert** in this
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image. Measured 2026-11-02 on the first deploy: with `ABS_PORT=8000` the server
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listened on `:80` under base path `/audiobookshelf`, so `systemctl` said
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`active (running)` while every probe of `:8000` was refused and the deploy gate
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failed at 180 s. Two seconds with the pinned digest settles it:
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`podman inspect --format '{{.Config.Env}}' <image>`.
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- **The audio bind stays `:ro`.** ABS writes nothing that belongs beside the
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audio: its library, covers, progress and sidecar metadata all land in
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`/metadata` on the SSD. A writable bind would put stray writes on the spindle
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and hand the array to a service with no reason to hold it. If per-book
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`.opf`/`.nfo` sidecars on disk are ever wanted, the rollback is one line —
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point the audio bind at the [[Media Metadata View]] the media servers already
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use — but that view's upper layer exists for those two servers' sidecars, so a
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third writer needs a reason first ([[Media Metadata View]]).
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- **Do not bind the raw array without the mount gate.** In a rootless unit
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`ConditionPathIsMountPoint=` is fail-*dead* and `RequiresMountsFor=` is inert,
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so a missing array does not stop the start: podman invents an empty directory,
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ABS indexes it, and an empty library becomes recorded truth. `wait-for-mount.sh`
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is the only gate that works here — same law the media servers obey
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([[Quadlet Lifecycle]]).
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- **The `HealthCmd` must use `wget`.** The image is Alpine and ships `wget`, not
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`curl`; a `curl` health command reads a perfectly healthy server as unhealthy
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and `Restart=always` turns that into a loop.
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- **The image pin is the amd64 manifest digest, not the index digest.**
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`podman inspect` reports the platform manifest (`RepoDigests[0]`) for what was
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pulled, which differs from the manifest-list digest `latest` points at. Pin the
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one this host runs. `latest` is newer than the newest version tag: upstream
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stopped publishing version tags after `2.19.0` while `latest` kept moving, so
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"highest version tag" is stale here — read the index, don't guess from tags.
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- **`IOWeight=10` is inert without the host drop-ins.** `dankserver/host/systemd/`
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carries `user.slice.d/io-accounting.conf` and the `user@1000` delegate, and the
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deployer installs both; without them systemd silently drops the weight
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([[Quadlet Lifecycle]]).
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- **No `systemctl --user enable`.** Generated Quadlet units cannot be enabled on
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this host; `WantedBy=default.target` in the unit file is what carries the
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service across a reboot ([[Quadlet Lifecycle]]).
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- **LAN-only until Frank says otherwise.** `0.0.0.0:8000` with no reverse proxy
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in front. Any public vhost requires the Anubis + Authentik chain first, and the
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outpost proxy provider has to exist before the vhost flips (external exposure
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policy in `AGENTS.md`).
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- **There is no `/setup` route; the creation door is `POST /init`.** `/status`
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(no `/api` prefix) reports `isInit` = "a root user exists", `POST /init` with
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`{"newRoot":{"username","password"}}` creates it, `POST /login` returns the
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bearer every `/api/*` route wants. `POST /setup` answers `Unauthorized` — that
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is a missing route wearing an auth message. Read off `dist-server/server/Server.js`
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inside the pinned digest rather than from a forum.
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- **A 200 may carry plain text.** `res.sendStatus(200)` answers the body `OK`, and
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`/init` and the scan route use it; a client that parses every success as JSON
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crashes on the one call that matters (`tests/audiobookshelf_init.bats` pins it).
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- **The item count is not a field on the library DTO.** The door is
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`GET /api/libraries/<id>/items?limit=1` → `total`. A poller that guesses a
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plausible name (`numItems`) prints `0` forever beside a scan that is working.
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- **A fresh scan is the only thing that notices new audio.** `inotify` does not
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cross a rootless podman bind — measured for [[Jellyfin]], whose page owns that
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law — so the in-container watcher sees nothing a host process files onto the
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array, and the deployer's re-run of the bootstrapper is the cheap scan trigger.
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- **`Invalid data found when processing input` names the file, not the bind.** The
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scanner logs it per file and skips the file — the book never appears — so a
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missing title beside those lines is library debris, not a server fault. Census of
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the refusals on the first full scan: 38 of 43 files were 0 bytes, 3 were WAV
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bytes wearing a `.mp3` name, 2 were unreadable. `stat -c %s` before any
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investigation of the server.
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## Verification
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`./tests/run.sh` covers this unit through `tests/dankserver_quadlet.bats`
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(boot persistence, the SSD state roots, the `:ro` array bind, the mount gate, the
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`wget` health check), `tests/audiobookshelf_init.bats` (the bootstrapper against a
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stub of the API above: create-once, idempotent re-run, no secret in a URL, refusal
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by URL when the server does not answer, and the deployer calling it only after the
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health gate) and `tests/media_overlay.bats` (only [[Plex]] and [[Jellyfin]] may
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reference the metadata view).
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