The "Restricting permissions on the Synapse secrets" step chowned
$app_dir/data recursively, which also walks data/media_store — files
written by Synapse itself. Under rootless that is invisible (container
root maps to the docker install user, so everything is chownable), but in
rooted mode container root IS host root: the chown runs as the manager and
would fail per file, then fail the step, over files that must keep their
own ownership anyway. Same shape as the stoat fix, caught before it bit.
Scoped to the top-level files the hook actually writes — homeserver.yaml,
log.yaml, signing.key, .lp-admin-token — which is what the step name means.
Note this app was NOT producing the stoat symptom today: matrix's postgres
data lives at $app_dir/postgres, outside the directory being walked.
element/ keeps its recursive chown: one LibrePortal-written config.json
the container never writes.
Verified: reinstall clean, exit 0, homeserver.yaml + signing.key still
0600, media_store untouched.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
linkding_auth.sh persists ADMIN_USER and ADMIN_PASSWORD when the first admin is
created, and keeps the password in step on later resets of that account, but
linkding.config declared neither — so both writes were no-ops and the WebUI
credentials card never had anything to show. Predates the slot work; it only
became visible once authPersistCfg started warning instead of failing silently.
Added empty rather than RANDOMIZED*, because unlike bookstack or nextcloud
nothing seeds a linkding account at install — the first user is created from the
WebUI. A generated password would name an account that does not exist, and the
card would display a password that cannot log in. Unslotted for the same reason:
the slot number marks a value the installer generates, and this one is written at
runtime by the tool.
No AUTH_PROFILE key: nothing reads it (it exists only in a comment in
auth_adapter.sh), and adding an unread key is what was just cleaned up elsewhere.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Both apps demanded a domain and Traefik. That was over-constrained: LibrePortal
ships WireGuard, Headscale and private ports, so LAN and VPN-only is a
first-class deployment here, and Rocket.Chat and Mattermost already prove chat
apps work fine on http://<lan-ip>:<port>.
The gate on Matrix rested on a mistake of mine: server_name being permanent.
server_name and public_baseurl are independent — the identity can be a domain
you own with no DNS behind it while clients reach the server on a LAN address,
so federation can be switched on later by adding DNS and TLS, with no rebuild
and no lost history. CFG_MATRIX_SERVER_NAME now exposes exactly that, and the
install warns when it falls back to the machine's IP.
What is genuinely lost without a domain is stated where it belongs, at install:
Matrix cannot federate and Element's mobile apps want HTTPS; Stoat cannot do
camera or microphone, because browsers gate getUserMedia on a secure context
and a VPN does not change that, the check being on the URL scheme.
Both now derive their URL from the port that was actually allocated. Since ports
are only assigned during compose-up, each writes a best guess before start and
corrects it afterwards, restarting only when the value really changed.
Three bugs found while proving it works end to end:
- The Synapse image writes /data as its UID/GID env, default 991, which under
rootless is a host sub-UID owning nothing — so the generated signing key could
not be moved by the install user. Both the generate container and the service
now run as the same identity USER_TAG resolves to.
- Element's config.json is bind-mounted as a file, and docker silently creates a
DIRECTORY when the source is missing. An early return left exactly that
landmine, which then broke every later run. It is written first now, and a
stale directory is cleared.
- A successful admin registration was reported as an error: checkSuccess read $?
after an intervening [[ ]] test rather than the command's own status.
Verified with no domain and no Traefik installed: Synapse answers
/_matrix/client/versions and /health on http://<ip>:<port>, admin login returns
a token, and Element is configured against the corrected base_url.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Both hooks read their host (and matrix its database password) back out of the
deployed docker-compose.yml. That cannot work: install_post_compose runs after
the compose TEMPLATE is copied but before dockerConfigSetupFileWithData fills
the tags, so at that point the file still holds raw placeholders. Matrix aborted
with "Database password was not generated in the compose file" even though the
password had been generated correctly — it just was not in the compose yet.
Derive the host from port_subdomains[0] + domain_full instead, both already in
scope from variables_init_app, applying the same empty/@/root rule as
tagsProcessorPortSubdomains so the computed name and the Traefik rule generated
later cannot drift apart. Matrix takes its database password from
CFG_MATRIX_DB_PASSWORD_1, which is where the secret is generated and remembered
and is the same variable the compose tag is filled from a step later.
The error messages now name the actual missing thing — the domain — rather than
blaming the compose file.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Matches b562059 — the fourteen mapping entries added alongside the slot rename
were written before that landed and ran 88-100 chars against a median of 44.
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>
Five apps (mastodon, owncloud, mattermost, matrix, stoat) took their generated
secrets from the compose-side generator tags PASSWORD_TAG_<n>/RANDOM_TAG_<n>/
HEX_TAG_<n>/VAPID_TAG_<n>. Those mint a fresh secret on every templating run, so
a reinstall handed the app a new database password while its data volume kept the
one initdb was given, and the app came back up unable to open its own database.
Move them to <app>.config as RANDOMIZED* placeholders, reaching the compose via
the #LIBREPORTAL|<APP>_<KEY>_TAG| mechanism tags_processor_app_config_values
already provides. No new handler: the tag name is derived from the config key, so
this is a config line plus a tag per secret. Generation is unchanged — still
random on first install; the value is now remembered instead of re-rolled.
Also fixes two things this exposed:
- The RANDOMIZED* replacers matched unanchored. `sort -u` orders slots lexically
(1, 10, 11, 2), so slot 1's pattern rewrote the prefix inside slot 10's
placeholder and slots 10+ ended up holding slot 1's secret with a digit glued
on — derivable, and invisible because the values weren't byte-identical.
Anchoring with \b makes match order irrelevant. Verified at 20 slots across
all four placeholder types: 64 keys, 64 distinct values, no prefix collisions.
- generateRandomPassword drew from base64 without constraining the mix; measured
over 2000 draws, 1 in 40 contained no digit at all. Retry until the result has
both a digit and a letter, bounded so a pathological length can't spin.
owncloud gains a fix in passing: its compose seeded the admin account from
PASSWORD_TAG_2 while the WebUI displayed CFG_OWNCLOUD_ADMIN_PASSWORD, which was
generated separately and never used. Both now read the same value.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Synapse on Postgres plus the Element web client, on two subdomains: the
homeserver on matrix.<domain> (which becomes server_name, so IDs read
@alice:matrix.<domain>) and Element on element.<domain>.
Two hosts rather than one because server_name then matches the host Traefik
already terminates TLS for, so 'serve_server_wellknown: true' is all the
federation delegation needed and nothing has to be published at the apex
domain — which this app has no way to configure.
CFG_MATRIX_AUTHELIA is pinned false and documented: forward-auth in front of
/_matrix locks out every client and every federating peer, since they carry
Matrix access tokens and cannot follow a redirect. Real SSO goes through the
OIDC block in resources/homeserver.yaml instead.
The install hook generates the signing key once via upstream's own 'generate'
command and refuses to regenerate it over an existing install — a new key would
be rejected by every server that had cached the old one.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
