ops-mason/plans/backup-object-storage.md

id	demand_source	consumer_repo	credential_type	status	approved_by	approved_at	created	updated
backup-object-storage	resource-control/workplans/RESOURCE-WP-0002-T04	rapp-postgres	openbao-kv-founder-provision	built	Bernd Worsch	2026-08-14	2026-08-14	2026-08-14

Construction plan: resource-control scoped backup key

1. Demand

RESOURCE-WP-0002 T04 needs a Scaleway API key for backup object storage in general, not a Barman-only identity. Founder uses IAM application resource-control and binds policy / API-key Scoped backup access on the project that owns the backup bucket. The key lives in OpenBao. External Secrets later projects it into consumer Secrets (first: platform-pg-backup-s3 in databases). The bootstrap key cannot create IAM. ops-mason builds the empty lane. Values never appear in git or chat.

2. Existing-structure survey

Checked 2026-08-14, retargeted the same day:

• KV path exists (version 1, 2026-08-14). Founder put ACCESS_KEY, SECRET_KEY, DEFAULT_ORGANIZATION_ID, DEFAULT_PROJECT_ID. Not placeholders. No APPLICATION_ID. The earlier draft path …/backup/platform-pg-backup-s3 was not built and must not be used.
• CCR-2026-0012 now reserves platform/workloads/railiance/backup/object-storage. Reuse it.
• CCR-2026-0011 is the bootstrap key (platform/workloads/railiance/scaleway/bootstrap). Different purpose. Do not reuse those values. Do not hang that key on application resource-control.
• CCR-2026-0004 is Nextcloud/age offsite. Different provider.
• Catalog. No backup-object-storage lane.
• Auth. First delivery is External Secrets into databases. Kubernetes auth role external-secrets-backup-object-storage is the CCR-declared steady state. railiance01 may need the interim AppRole/token pattern; that apply is after placeholders are replaced.
• Does an existing lane already satisfy this? No live secret.

3. Proposed changes

#	Action	Object	Reuse-vs-new rationale
1	reuse	CCR-2026-0012 path	Already reserved after retarget
2	create	policy workload-kv-read-backup-object-storage	File already written; apply after approval
3	create	empty KV v2 path (placeholders xxx)	Paste-once / UI replace has a home
4	defer	Kubernetes auth role / AppRole / ESO store	After real values exist
5	defer	catalog backup-object-storage	Pointer only; warden_executes: false until verified
6	defer	Scaleway bucket policy principal	Needs APPLICATION_ID of resource-control

No new rail. Scaleway operates S3. No second IAM application.

4. Review notes

• Naming: path is …/backup/object-storage. IAM application is resource-control. Policy and key label are Scoped backup access.
• IAM fact: policies attach to the application, not one key. Only backup-scoped keys belong on resource-control.
• TTL/scoping: the Scaleway key is long-lived until rotated. The OpenBao reader is ESO, 15m Kubernetes auth TTL in the CCR.
• Redundancy: does not reuse the bootstrap path or the Nextcloud offsite lane. Supersedes the Barman-named draft of the same CCR.
• Secret values: mason does not read, write, or log them. Founder uses the OpenBao UI or railiance-platform/docs/put-backup-object-storage.md.
• Founder remaining acts: approve this plan and CCR-2026-0012; create or reuse application resource-control; bind policy and key Scoped backup access; replace xxx; say “the backup key is in bao.”

5. Executive summary

One-line ask: approve an OpenBao home for the resource-control backup key so first consumer rapp-postgres (and later backup consumers) can receive a projected Secret without putting keys in git or chat.

Who gets access: you (founder) to write the three fields; later, External Secrets, first bound to namespace databases.

To what: only platform/workloads/railiance/backup/object-storage (ACCESS_KEY_ID, ACCESS_SECRET_KEY, APPLICATION_ID). Not the bootstrap path.

For how long: until you rotate or revoke the Scaleway key.

Blast radius if the credential leaks: read/write/delete objects on the backup bucket. Revoke the key in the Scaleway console, delete the KV version, rotate.

Cost to reverse: delete the KV path, policy, and unused drafts. WAL is not enabled yet, so there is no production archive to migrate.

Decision: approved in chat 2026-08-14 (“Lets go”).

6. Build result

Built 2026-08-14:

• policy workload-kv-read-backup-object-storage (read on the KV data and metadata paths only)
• AppRole external-secrets-backup-object-storage (15m/30m, 8 uses)
• Kubernetes Secret external-secrets/openbao-backup-object-storage-approle delivered; local files shredded
• ClusterSecretStore openbao-backup-object-storage Valid
• ExternalSecret synced databases/platform-pg-backup-s3 (two keys, values not read)

Did not write Scaleway secret values. Did not enable WAL.