A node's intrusion filter should be composed from its assigned modules, like
its firewall (the Filtering mechanism): a service module (postgres, mssql,
mailu) declares its jail in its manifest (filter + stanza, no node/path per ADR
0112), and the mesh writes the jails of a node's modules into the fail2ban
holder's jail.d. The base (sshd, recidive, ignoreip=mesh-range) stays the
fail2ban module's. Records the model after novox's HAL per-module jails were
lost as dangling symlinks; the ignoreip is now safe on disk, the service jails
need this to be restored.
Reviews 0110/0121 after a session where renaming seats cost three freezes, a
builder deadlock, and hand-resolved manifests. The seat rules were right; the
set being a compiled Go slice referenced by name-string everywhere was the
mistake. Seats become a table keyed by a stable id; claims/held/production code
reference the id; a rename is one UPDATE, no rebuild, no re-registration, no
freeze. The build machine reads the set from the mesh instead of embedding it,
removing the controller/builder seat coupling. Closed set and scope naming
unchanged; only storage and reference change. Outstanding renames (registry
seats, private-network scope) wait for this — as data each is a write.
Records the manual update process (module moved -> build -> reconcile; and the
breaking-change freeze/re-register recovery), and the two things that make
self-update more than a webhook: the build-on-push trigger is currently HAL's
(hal-gitea-tools on :9877), a retirement gap the mesh must replace with its own
forge-webhook trigger wired to every repo including mesh-controller; and the
builder validates manifests too, so a breaking change couples controller +
builder + manifests + hosts, and renaming the builder's own seat deadlocks its
rebuild. Names the transition discipline (accept old+new for one release) that
self-update needs so a push does not auto-freeze.
Records the reversal: distribution stays as the mesh's OCI registry (it serves
every artifact-store:// image); only verdaccio, a redundant second npm registry,
is removed. The 'consolidate onto gitea / retire distribution' direction was
dropped. Also records that the node-* rename was executed as one controlled
migration with a brief compose freeze, and why the delivering registry seats
are deferred rather than folded in.
The control plane's seats grew a second naming style (the-*) beside mesh-*,
and the closed set was the only place any seat could be defined. This settles
both: system seats are mesh-* (one, mesh-wide) or node-* (one per node), named
for scope; a module may define its own seat outside the closed set. Folds in
the seat review: mesh-build-machine (scope fix), mesh-private-network (one
server + client modules, dropping per-node VPN choice), showcase becomes the
first module-defined seat, node-uplink, and the node-* renames — plus the
registry consolidation onto gitea, which reshapes the registry seats and gates
retiring distribution/verdaccio. Records why the renames are a coordinated
migration and why distribution cannot be removed until gitea serves images.
A roster fact may be shared — written into a marked region of the machine's
file (into: block, hq 128) rather than as the whole file. The template
renders the content; shared decides how the host lays it down. Composes with
hq 128: the region mechanism is the host's, the format is the module's.
The facts mechanism formatted the roster in Go in the control plane — one
formatter per fact, in the consumer's own configuration language. ADR 0120
makes a fact a path and a template: the mesh owns the data, the module owns
the format, and the control plane holds no format at all.
to-be 29 (operator accounts + what lives under a home) is rewritten to ride
it: the ssh files become roster templates, the whole ~/.ssh is owned with a
found/owned boundary that cannot lock the operator out, keys are mesh-owned
through an SSH CA (existing keys adopted not regenerated, the operator's
personal key signed not minted), and the ssh-agent is a user-scoped service.
The mesh models machines but not the people on them — a node record
holds no username, and no module places anything under a home. So who
you are on each node (jochens/ace/jochen) is unknown to the mesh, and
nothing owns ~/.ssh, dotfiles or ~/.config. HAL knew it; the nox mesh
dropped it. Proposes the account as a node fact and a home-scoped
resource class (the ~/ mirror of ADR 0112's /var/lib placement), with
the login key staying the operator's (ADR 0051). Not urgent — HAL's
generators still run — load-bearing at node-by-node retirement. Found
generating ~/.ssh/config from HAL's registry, which nox has no
equivalent for.
Both repository checks fail on main. 0115 is cited by no design, and it is
marked accepted while resting on 0112, which is proposed.
Design 27 already states the rule the record decides — "a module is assigned
at most once to a node, and that pair is the assignment's identity" — so it
is the home, and now says so. And 0112, 0113, 0114 and design 27 are all
proposed: the batch is under review, so the record is too. Promoting 0112
instead would be marking a record accepted to satisfy a check, which
check_rests_on names as a failure this repository already made once.
PR #133 landed a different 0115 while this branch was open. The bus record
is now 0116, with every citation in designs 19, 25, 28 and the index
following it.
Note: cycle.py and records.py both fail on main as merged, on that record —
nothing cites it, and it rests on 0112, which is still proposed. Both
pre-date this branch and are left for their own change.
A record can assert a fact that goes stale while the decision it supports
stays right. Superseding for that buries a sound record under a second one
and makes every reader work out which is live. So a correction of fact is
now made in place, marked and dated, with the old wording quoted — bounded
by three conditions and checked by records.py, which fires on an unmarked,
undated or back-dated note. Judgements still supersede.
Applied to 0115: no conformance suite exists to recapture, and the full
genesis bed cannot run until the links exist. Designs 25 and 28 follow.
Counting the surface first changed the plan twice: the genesis bed cannot run
until the links exist, so it belongs to step 4, and there is no conformance
suite to recapture — step 3 builds one against the current bus before moving
it. Both corrections are recorded in the breakdown rather than edited into
ADR 0115. Also indexes design 25, which was never listed.
jschoubben
jochen