truenas-docker-ops

TrueNAS Docker Operations

Essentials

• Connect: ssh truenas (auth pre-configured)
• Stacks managed via Ansible in ansiblonomicon repo folder (in ansible/stacks/)
• Deployed compose files: /mnt/performance/docker/stacks/<stack>/compose.yaml
• Container configs: /mnt/performance/docker/<stack>/
• Large media data: /mnt/capacity/watch/<container>/
• Network/IP assignments: see individual compose files or ansible/inventory/group_vars/truenas.yml in ansiblonomicon

Common Commands

Task	Command
List containers	ssh truenas docker ps
Filter containers	ssh truenas docker ps | grep <name>
View compose	ssh truenas cat /mnt/performance/docker/stacks/<stack>/compose.yaml
View logs	ssh truenas docker logs <container>
Exec command	ssh truenas docker exec -i <container> <command>
Inspect	ssh truenas docker inspect <container>

Deployment

Stacks are deployed via Ansible, not manually:

# From ansiblonomicon repo
poe truenas           # Full playbook
poe truenas -t stacks # Just stacks

but you can run ad-hoc commands against the docker containers/compose files on the truenas host. Changes will not be preserved unless they are made to the ansiblonomicon repo.

Anypod Data Layout

• Host data root: /mnt/capacity/watch/anypod/data (binds to /data in container)
  • Media downloads: media/<feed_id>/
  • Transcripts: transcripts/<feed_id>/
  • DB: /data/db/anypod.db
• DB tables (anypod.db):
  • feed (PK id; feed metadata, source info, timestamps, counters)
  • download (PK feed_id, id; per-episode info, status, transcript fields)
  • appstate (PK id; last_yt_dlp_update, other global state)

Helper Scripts

Python (handles nested heredoc/quoting)

scripts/docker_exec_python.sh <container> '<python_code>'

scripts/docker_exec_python.sh anypod '
import sqlite3, json
conn = sqlite3.connect("/data/db/anypod.db")
conn.row_factory = sqlite3.Row
rows = conn.execute("SELECT * FROM feed").fetchall()
print(json.dumps([dict(r) for r in rows], indent=2))
conn.close()
'

Note: Default interpreter is /app/.venv/bin/python (works for anypod). Override with CONTAINER_PYTHON:

CONTAINER_PYTHON=/usr/bin/python3 scripts/docker_exec_python.sh your-container 'print("hi")'

SQLite

scripts/docker_exec_sqlite.sh <container> <db_path> '<sql_query>'

scripts/docker_exec_sqlite.sh anypod /data/db/anypod.db '
SELECT feed_id, status, COUNT(*) AS count
FROM download
GROUP BY feed_id, status;
'

When to Use Scripts vs Direct

• Scripts: Multi-line Python/SQL, complex quoting
• Direct docker exec: Simple commands, logs, inspection

Quick Examples

# Is anypod running?
ssh truenas docker ps | grep anypod

# View anypod compose
ssh truenas cat /mnt/performance/docker/stacks/anypod/compose.yaml

# Query anypod DB
scripts/docker_exec_sqlite.sh anypod /data/db/anypod.db "SELECT * FROM feed;"