omnigraph/docs/user/clusters
Andrew Altshuler 20e5fada8a
docs: state cluster apply is storage-direct, not server-routed (#306)
* docs: state cluster apply is storage-direct, not server-routed

`cluster apply` reaches the object store directly — the `__cluster/` ledger
and each graph's Lance datasets — never through a running omnigraph-server,
so the host that runs it needs storage credentials. The rationale (declarative
control plane, not a runtime mutation API) was documented in cluster-axioms.md
§3/§4, and the out-of-band/direct-storage fact was stated for the maintenance
verbs and init/load, but never spelled out for apply itself.

- docs/user/clusters/index.md: add a day-2 note making apply's storage-direct
  execution and credential requirement explicit, linking the why to axioms 3/4.
- skills/omnigraph/SKILL.md: extend the "init/load write storage directly
  (bypassing the server)" line to include cluster apply, with the same reasoning.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* docs: disambiguate the §5 cross-reference in cluster apply note

The trailing (§5) sat right after the cluster-axioms.md §3/§4 citation, so a
reader could read §5 as referring to cluster-axioms.md (whose §5 covers locked
state) rather than this guide's §5. Make it an explicit same-page forward
reference. Addresses Greptile P2 on #306.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* docs: don't claim the server is read-only against storage

The "server only reads from it" wording was wrong: the data plane serves HTTP
writes (mutate/load/branch) that go through the server to the graph datasets,
so omnigraph-server is not read-only against object storage. The hazard is an
operator granting the server read-only S3 creds and breaking runtime writes.
Scope the read-only claim to cluster (control-plane) state at boot, and state
that data-plane writes still need read-write storage access. Addresses Greptile
P-level finding on #306.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Co-authored-by: Ragnor Comerford <ragnor.comerford@gmail.com>
2026-06-28 17:14:58 +02:00
..
config.md docs(user): coherence cleanup aligned with 0.7.1 (#293) 2026-06-21 00:02:34 +03:00
index.md docs: state cluster apply is storage-direct, not server-routed (#306) 2026-06-28 17:14:58 +02:00