Installing rocketchat failed with
invalid IPv4 address: ParseAddr("IP_DATA_2"): unable to parse IP
ipUpdateComposeTags allocates one IP per SERVICE_TAG_N annotation and fills
IP_TAG_i only where SERVICE_TAG_i exists. The four new apps tagged only their
primary service, so every sidecar — matrix's postgres, mattermost's postgres,
rocketchat's mongo, and fifteen of stoat's sixteen — kept a literal IP_DATA_n
in the deployed compose and docker refused to create the container.
Tag every service that carries an ipv4_address, index-aligned with its IP_TAG.
For stoat that also meant moving caddy from SERVICE_TAG_1 to _6 so the indices
line up with the IPs rather than the reading order.
mastodon had the same latent break (IP_TAG_2 and _3 untagged) and is fixed the
same way — it would have failed on first install for the same reason.
SERVICE_TAG carries the compose *key*, not container_name: 'libreportal app
restart <app> <service>' passes it to 'docker compose restart', which only
understands keys.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
VAPID: the two values are the halves of one P-256 keypair, not independent
secrets — the browser verifies that a push is signed by the private key matching
the public key it subscribed with. The RANDOMIZED* generators mint each
placeholder on its own, so they produced two unrelated strings and web push could
never have worked. Generate the pair in mastodon_install_post_setup the way stoat
already does, encoded as Mastodon's webpush gem expects: unpadded URL-safe base64
of the 32-byte private scalar and the 65-byte uncompressed public point, sliced
out of the SEC1 DER. Verified by rebuilding the key from the emitted private half
and re-deriving the public point — openssl accepts it and the point matches.
Generated once and never rotated (rotation would invalidate every subscription),
but a pair of the wrong shape is replaced, so an install carrying the old
unrelated strings heals itself on next install — their public half is 42 chars
where a real point is 87.
Slots: CFG_<APP>_DB_PASSWORD -> CFG_<APP>_DB_PASSWORD_1 and likewise for
DB_ROOT_PASSWORD, across mastodon, owncloud, mattermost, matrix, nextcloud and
bookstack, so a database credential is always a numbered slot and a second one is
just _2. Renaming a key means reconciliation drops the old and adds the new
holding its placeholder, so an existing install regenerates unless the value is
carried over first — documented, including that the old file survives as
.<app>.config.bak.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Rocket.Chat tails the Mongo oplog for realtime delivery, and a standalone
mongod has no oplog — so the database has to be a replica set even with one
member.
Uses the official mongo image rather than bitnami/mongodb (which upstream's own
compose uses) because Bitnami moved its catalog behind a paid registry and the
free tags are no longer dependable for a long-lived install. The cost is that
rs.initiate() is not automatic, so the post-start hook runs it once — guarded by
rs.status() so a reinstall over restored data doesn't re-initiate a live set,
and followed by a wait for the member to report itself primary.
Mongo runs without auth: enabling it on a replica set also requires a shared
keyfile for member-to-member auth, which is a lot of moving parts for a database
that is never published outside the docker network.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
