The rule the forge's cutover taught: a module that takes over a running service must not
carry an older image than the one running, or the cutover is a downgrade nobody asked for.
6.10.4 exists; moving to it is an upgrade and its own act.
A node being adopted cannot take a web module: every module reachable by
name requires route, the mesh's only provider of it binds the two public
ports, and the predecessor's proxy holds them and serves every public
name there. Stopping the predecessor to break the circle darkens every
name at once, with every certificate to re-obtain in the same window.
So this answers the same provision without binding anything. It provides
route and receives the same contributions file, and writes each
contribution as one route file where the predecessor's file provider
reads, naming the predecessor's own certificate resolver so no
certificate is asked for. It removes a file it wrote when its
contribution goes and never touches a file it did not write — the name
and a marker inside both have to say it is the mesh's.
A step, not a daemon: run-once, re-run by restart-on over the received
file and the settings. The predecessor's dynamic directory is a node
setting, because it is a fact about one machine.
Migration scaffolding with a stated end: assigned only on an adopted
node, deleted when the predecessor's proxy retires.
MESH_GITEA_URL named 3000 outright. The forge's container publishes 3000 without
fixing the machine side, so the mesh assigns it — and on a node given that port
as a setting it is the operator's number. The mapping that lets the forge go on
binding 3000 does nothing for a caller dialling the machine's loopback, so the
sidecar dialled a port nothing was listening on wherever the two differed.
${port:3000} is the mesh's answer to exactly that question, and it now resolves
in a container's environment as it always has in a file. The forge declares it
listens on 3000, so it may ask.
Still names 3000: the route contribution (hq issue 089) and the `listens` and
`ports` entries, which are the software's own number and belong there.
`at` was settable. A node setting could point the builder's package binding at
any host, and the builder sends its registry credential there as basic auth — so
a setting meant for a port was a way to hand the password to somebody else.
novox/hq 04-ISSUES/085
The forge is raised by hand at genesis, before any module provides
`package-registry`, so the builder carries a binding instead of resolving one —
and the port in it was rewritten, as text, by the installer. A later
registration of this manifest from the catalogue put 3000 back, silently, and
pointed the builder and its registry credential at whatever holds that port.
Made settable instead: the port is a per-node setting the controller holds, and
the catalogue's number is only its default. `provision`, `from` and `as` are
protected — a setting here is about where the forge answers, never about who the
binding is with.
novox/hq 04-ISSUES/085, ADR 0100
step-ca's root certificate, its key and that key's password were own secrets — random
bytes the mesh minted, which no certificate is (novox/hq 04-ISSUES/076). The mesh
mints only the CA password now; step-ca makes its root at first start and serves it
at /roots.pem, which the manifest now names beside the ACME directory. The route
proxy fetches that root over the mesh network in a run-once step before it starts,
instead of being handed a served fact that could only be written before anything ran
(ADR 0098).
The copy between registries (ADR 0096) reaches the mesh's registry over HTTP from
inside the builder's container, where loopback on the default bridge is not the
machine; docker push never noticed because it went through the machine's daemon.
The builder already holds the runtime's socket, so the host network adds nothing
it did not have.
gitea, umami, influxdb, icecast and mailu require a secret and keep each of theirs
under a local name (novox/hq ADR 0094); the broker account stays their own. The
route proxy's recipe starts FROM the bases its manifest declares (ADR 0097).
ADR 0069 put it there; genesis now takes it from the build it runs (mesh-host,
novox/hq 04-ISSUES/072). This copy was read by nothing else and had already drifted.
The official entrypoint re-executes itself as mongodb (uid 999) and only then reads
MONGO_INITDB_ROOT_PASSWORD_FILE, so a root-owned 0600 file is 'Permission denied' at line 83 and
the server never starts. secrets-owner is the mechanism ADR 0086 gives for exactly this.
From the survey of every env-file secret (ADR 0086, issue 041): amqp-ping,
minio, mongodb and grafana use the _FILE twin their software honours;
mesh-catalog and model-usage read DATABASE_URL_FILE (a file the mesh
templates, mounted where only the runtime reads it); grafana's secret files
belong to its own account. Two dead deliveries removed: a line nothing read
in amqp-email-forwarder, and mailu's secret.env on four containers that
never read it. The 25 exceptions that remain carry the surveyed reason —
convertible and awaiting a bed, convertible through a generated config file,
the application's own code, or not convertible.
ADR 0086. mesh-controller mounts its six own secrets and names them with
_FILE twins, so no credential of its own reaches its environment. The 35
containers that still read a secret through an env-file carry
secrets-in-environment with the reason; converting each where its software
accepts a path is the per-module work of issue 041.
mesh-vault provides `secret` (novox/hq ADR 0085, design 24). The value is
the pair credential the controller mints — the vault holds no copy, only a
ledger of who holds one, its fingerprint and every rotation, and two tools that
answer by fingerprint and never by value. Rotation is `rotate secret`,
unchanged machinery pointed at a secret with an owner (design 13). Named in the
mesh's own namespace, beside mesh-controller and mesh-catalog, because it is
the mesh's own code rather than wrapped software.
redis is the first consumer: its own password stops being an own-secret nothing
could rotate and becomes a `secret` it requires, read from the same file into
the same hole. The server now restarts on its config, or it would keep the
password it started with through every rotation (playbook 06).
The comment still said the provisioner is not listed and runs via a
container's args — but the 061 fix put it in MESH_TOOL_MODULES (serve
mode) and dropped the args. A future editor trusting the comment could
strip it again and silently reintroduce 061. Comment now matches the
code; only the run-once bootstrap runs via args.
minio's runtime copies the `mc` client from minio/mc:latest — a
Docker Hub pull the mesh build environment cannot make (its docker
reaches the mesh registry, not public Hub), the same isolation that
blocks npm deps. apt-based installs (mongodb's mongosh, mosquitto)
build fine because the build has real internet for apt; only npm and
Docker Hub are redirected. Delivering an external binary or image layer
into a mesh build is the same open question as the npm deps — deferred
with them.
Both carry third-party runtime deps (pg; tweetnacl + sealedbox) that
their Dockerfile installs with npm — which 404s in a mesh build, whose
npm points at the mesh's own registry, not public npm. The workstation
build script got away with it by installing on a host with public npm.
Delivering a module's third-party deps into a mesh build is an open
question (how: publish to the mesh registry, or proxy); until it is
answered these two stay on the placeholder path they were already on.
The other 37 modules build from their own directory with no external
fetch.
jschoubben