The module named /var/lib/n8n, /services/n8n/n8n-data and n8n.novox.be -
paths and a domain no definition may carry (ADR 0112). State and data are
placed directories; the public name is ${bound:route:name} (depends on
mesh-controller #149), for N8N_HOST and WEBHOOK_URL alike.
The endpoint said 5682 while the container publishes 5678. 5682 was one
machine's host port; the endpoint is the software's port and the mesh
assigns the machine's (ADR 0038).
n8n had been run from an image in a registry that no longer exists: the
upstream image plus shadow, a `media` group (2000) with `node` in it, and
a global `uuid`. That recipe is now this module's Dockerfile, built on the
upstream 1.71.3 image named in build.on by digest, with uuid pinned to the
version the running image carries (14.0.1) - Code nodes require() it. The
media group is how the container writes into the shared media library, a
read-write `access` (ADR 0051), mounted where workflows expect it,
/media-library.
The workflows also use a redis (the Redis nodes of the chat workflows) and a
Selenium Chrome (the scraper), which the previous deployment ran beside n8n.
Both are containers on the module's own network, publishing nothing, pinned
to the digests in use; redis keeps its append-only file in a placed
directory.
The basic-auth secret is gone: N8N_BASIC_AUTH_* was removed in n8n 1.0 and
did nothing. The grant's password is a 0400 file owned by `node`, read
through DB_POSTGRESDB_PASSWORD_FILE, so nothing secret is in the
environment. The credentials' encryption key is n8n's own, in the data
directory (config), and moves with it - nothing to mint or accept.
Verified: catalogue tests with MESH_CATALOGUE set; the Dockerfile built
against the pinned base gives n8n 1.71.3, uid 1000 in group 2000, uuid
14.0.1 - the running image's shape. Throwaway containers: an instance on
PostgreSQL 15 with an owner, a workflow and an encrypted credential;
stopped, copied, dumped from the copy, restored (--no-owner --role, the
uuid-ossp extension pre-made by the superuser) into a grant-shaped
database on the postgres module's pgvector image (PG17); the new shape
(password from the file, data dir copied) serves /healthz, the owner logs
in, the workflow is listed, and the credential decrypts with the carried
key. The node user writes into a root:2000 0775 library through the media
group; redis and Selenium resolve by name on the module network and
Selenium reports ready. Test containers and data removed.
jschoubben
fbd3ecd84a