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Author SHA1 Message Date
Emi Griffith
657e27ba9f openbao: render Centralis from the vault
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Centralis could not migrate at all. `seed-from-sops.sh --all` refused
centralis.prod with `CENTRALIS_TOKENS: contains a shell metacharacter`, and
render-secrets-openbao.sh had no Centralis path whatsoever — so the seeded data
would have had nothing to read it.

Both halves come from applying the app stack's rules to a file that does not share
its shape. /etc/thermograph.env is raw unquoted KEY=value. /etc/centralis.env is
consumed by exactly one thing and that thing is a shell:

    sudo bash -c 'set -a && . /etc/centralis.env && set +a && docker compose up'

CENTRALIS_TOKENS is JSON, so it can never satisfy a no-metacharacters rule, and
rendering it unquoted is precisely the 2026-07-24 failure: bash strips the quotes,
Centralis fails closed on the malformed registry and serves a single `shared`
identity, indistinguishable from the file never being written.

So:

- seed-from-sops.sh validates against the renderer that will consume the path. The
  dotenv rules still apply to common and env/*; centralis/* is exempt because it is
  single-quoted downstream.
- render-secrets-openbao.sh gains thermograph_render_openbao_centralis, mirroring
  render_centralis_secrets: fetch as JSON, emit POSIX single-quoted assignments,
  then PROVE the file by sourcing it under `env -i` with `set -a` and comparing
  every value back before anything touches the destination. Mirrored rather than
  shared, per the existing note above thermograph_render_openbao — consolidate when
  the SOPS path is deleted.
- render_centralis_secrets gains the same early-return backend dispatch the app
  path already uses, so the new function is reachable. Without it the SOPS path was
  the only path regardless of TG_SECRETS_BACKEND.

Verified against a synthetic registry containing a JSON token map, an apostrophe,
and `$(...)`/backtick/backslash/double-quote payloads: 5 keys round-trip
byte-for-byte through `set -a; . file`, CENTRALIS_TOKENS parses to the right
subjects, and the command substitution does not execute. The negative case is
covered too — fed the unquoted 2026-07-24 shape, the round-trip check reports the
value as changed (by length, never content) and refuses to write.

Also corrects the claim in render-secrets-openbao.sh that the SOPS path never
tripped the metacharacter hazard "because every current value happens to be
alphanumeric". CENTRALIS_TOKENS is the counter-example; it never tripped those
paths because it was never in them.
2026-07-30 19:55:17 -07:00
Emi Griffith
5001269b37 openbao: derive the AppRole credential path per environment
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render-secrets-openbao.sh resolved the AppRole file to a single host-wide default,
/etc/thermograph/openbao-approle — which is prod's. On vps2 that made beta's render
authenticate as tg-prod, and tg-host-prod.hcl denies thermograph/data/env/beta, so
beta could never render from OpenBao. It surfaces as `cannot read
thermograph/env/beta`: the policy working correctly against the wrong identity.

env-topology.sh exists precisely because vps2 runs two environments and one
host-wide marker cannot answer "which environment is this". The AppRole path is the
same question and had been given the same host-wide answer. It is now derived per
environment alongside host, checkout, branch, ports and DB role, and the renderer
resolves THERMOGRAPH_BAO_APPROLE, then TG_BAO_APPROLE, then the conventional path —
the same precedence render-secrets.sh:44 already uses for the backend selector.

Only beta differs. prod and dev keep the conventional path; dev is alone on vps1 so
there is no collision there.

Beta parity passes when the path is supplied by hand (24 keys = 8 + 16 shared);
this makes it automatic. Derivation confirmed by sourcing env-topology.sh for all
three environments.
2026-07-30 19:49:28 -07:00
Emi Griffith
6bd07d33cb openbao: add a dormant OpenBao backend alongside SOPS
Phase 1 of moving the secret store to OpenBao. Nothing is cut over:
TG_SECRETS_BACKEND defaults to sops for all three environments, so SOPS
remains authoritative until an environment is flipped in a reviewed PR.

The reason for the migration is one specific failure class. infra/CLAUDE.md
requires that vps1 never hold prod credentials, but that rule is currently
enforced by a caller-side shell flag (THERMOGRAPH_SECRETS_SKIP_COMMON) at
three call sites. A fourth call site, or one by-hand render, writes both S3
keypairs, the VAPID private key, REGISTRY_TOKEN and the IndexNow/metrics
tokens onto the Forgejo CI-runner box and exits 0. policies/tg-host-dev.hcl
makes that a 403 instead: dev's identity cannot read the common path at all.

Shape:
- vps2 only, native systemd (not a container: a Swarm service is circular,
  and a plain docker run is one `prune -a` from gone), raft storage (2.6.0
  deprecated the file backend), static auto-unseal so a reboot cannot block
  deploys, mesh-only self-signed TLS (not ACME — that would put DNS in the
  boot chain of the secret store).
- AppRole per environment, CIDR-bound, 5-minute tokens. Each environment's
  secret-id is owned by its own deploy user, which is a boundary that does
  not exist today since prod and beta both reach the same root-owned age key.
- Render still produces the same raw unquoted dotenv: Centralis compares
  /etc/thermograph.env textually and the Swarm entrypoint parses it by line.

The backend dispatch in render-secrets.sh returns early rather than
refactoring the shared write path, so the SOPS path stays byte-identical.
Verified by rendering dev (12 keys) and prod (32 keys) through it, matching
the live hosts. The duplicated write path is noted for consolidation once
prod has been on OpenBao for a release cycle.

The OpenBao renderer rejects values containing a newline or a shell
metacharacter. /etc/thermograph.env is sourced by bash in six places, so
such a value is a command-execution path on the deploy host; the SOPS path
has always had this hazard and avoids it only because every current value
happens to be alphanumeric.

Also records that the age keypair is NOT retired by this migration: it is
the backup encryption key for every off-box dump (ops-cron.yml:142,197,
30-day retention), so deleting it with the vault files would silently
destroy a month of database recoverability.

verify-parity.sh is the cutover gate — it renders both backends and diffs
them, reporting key names and counts only, never values.
2026-07-29 21:35:20 -07:00