96 lines
3.7 KiB
Markdown
96 lines
3.7 KiB
Markdown
# 32 — `jellyfin-dev` container wipe (2026-05-11)
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Cleanup of the idle `jellyfin-dev` instance on nullstone. This was the
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scratch container used for the scyfin theme experiment + the 10.11.8 dev
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upgrade documented in `docs/29-jellyfin-10.11-upgrade-and-scyfin-migration.md`.
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The experiment is concluded; prod is being upgraded by a parallel agent
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and `jellyfin-stock` (tv.s8n.ru) covers the stock build, so dev has no
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remaining role.
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## Pre-wipe state
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```
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$ docker ps -a --filter name=jellyfin-dev
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CONTAINER ID IMAGE STATUS NAMES
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ecf97cddba6c jellyfin/jellyfin:10.11.8 Up 14 hours (healthy) jellyfin-dev
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$ ls -la /opt/docker/jellyfin-dev/
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-rw-r--r-- 1 user user 1898 docker-compose.yml
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-rw-r--r-- 1 user user 1799 docker-compose.yml.bak.1778243059
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drwxrwxr-x 3 user user 4096 web-overrides/
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$ ls -la /home/docker/jellyfin-dev/ (via privileged alpine, userns=host)
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drwxr-xr-x 5 1000 1000 cache/
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drwxr-xr-x 8 1000 1000 config/
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total: 200 MB
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$ grep -lr "jellyfin-dev\|dev.arrflix" /opt/docker/traefik/config/
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(no matches — routing was via docker-provider labels only)
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$ df -h /home
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/dev/mapper/keystone--vg-home 399G 284G 96G 75%
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```
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## Actions
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1. `docker stop jellyfin-dev && docker rm jellyfin-dev` — container removed.
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2. Privileged-alpine wipe of `/home/docker/jellyfin-dev/` (uid 1000 inside
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userns-remap, owner `100000:100000` on host — host `user` can't `rm` it
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directly, hence the `--userns=host` container):
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```
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docker run --rm --userns=host -v /home/docker:/d alpine \
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rm -rf /d/jellyfin-dev
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```
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3. `rm -rf /opt/docker/jellyfin-dev/` — compose file + web-overrides gone
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(owned by `user`, plain rm sufficient).
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4. Traefik docker-provider router vanished with the container — no
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file-provider yaml to clean up (verified via grep).
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## Post-wipe verification
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```
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$ docker ps -a --filter name=jellyfin-dev # empty
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$ ls /opt/docker/jellyfin-dev # ENOENT
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$ ls /d/jellyfin-dev (in alpine) # ENOENT
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$ curl -sk -o /dev/null -w "%{http_code}\n" \
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https://dev.arrflix.s8n.ru/ # 404 (Traefik, no backend)
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$ ls /home/docker | grep jellyfin # jellyfin, jellyfin-stock only
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$ ls /opt/docker | grep jellyfin # jellyfin, jellyfin-stock only
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```
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Prod (`jellyfin` at `arrflix.s8n.ru`) and stock (`jellyfin-stock` at
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`tv.s8n.ru`) were both untouched and continue to serve traffic.
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## What was kept
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- `/home/user/snapshots/jellyfin-dev-pre-1011-upgrade-20260511-033309.tar.zst`
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(143 MB) — pre-upgrade rollback point.
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- `/home/user/snapshots/jellyfin-dev-post-10107-20260511-033839.tar.zst`
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(144 MB) — post-rollback snapshot from earlier today.
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Both stay in place as historical artefacts.
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- Pi-hole local-DNS pin `dev.arrflix.s8n.ru -> 192.168.0.100` — harmless,
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resolves to Traefik which now 404s. Left alone.
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- LE certificate for `dev.arrflix.s8n.ru` in `traefik/acme.json` — left
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alone; reusable if dev is ever rebuilt.
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## Disk reclaimed
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```
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before: 96G avail
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after: 96G avail (200 MB freed; below `df -h` rounding granularity
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on a 399 GB volume)
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```
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`du -sh /home/docker/jellyfin-dev` reported 200 MB pre-wipe, so the
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freed-space figure is exact even though `df -h` can't resolve it.
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## Rebuild path (if ever needed)
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1. Restore `/home/docker/jellyfin-dev/` from one of the snapshots in
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`/home/user/snapshots/`.
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2. Recreate `/opt/docker/jellyfin-dev/docker-compose.yml` from
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`docs/29-jellyfin-10.11-upgrade-and-scyfin-migration.md` (compose
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block is inline in that doc).
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3. `docker compose up -d` — Traefik docker-provider re-attaches the
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router automatically, LE cert is already in acme.json so no fresh
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challenge needed.
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