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railiance-apps/docs/cnpg-backup-topology-inventory.md
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RAILIANCE-WP-0016: promote active; inventory and activity-core cutover prep 
Mark workplan active with T01/T02 done, document topology, extend status
for activity-core mode, and wire Make targets to the platform multi-host
backup CLI. T03 remains operator-blocked on ESO token.
2026-07-22 19:50:59 +02:00

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CNPG backup topology inventory

Workplan: RAILIANCE-WP-0016-T01
Recorded: 2026-07-22
Method: live kubectl get cluster + psql datname listing on both hosts.

Hosts

Host Kubeconfig (operator workstation) API
CoulombCore ~/.kube/config tunnel k3s-api-coulombcore
railiance01 ~/.kube/config-hosteurope local / hosteurope

Production-of-record (POR) decisions

Target id Host Cluster Databases POR? Consumer / notes
core-apps-pg CoulombCore apps-pg apps_meta, core_hub, core_hub_staging, vergabe_db Yes S5 apps (vergabe, core-hub) — only instance
core-gitea-db CoulombCore gitea-db gitea Yes Legacy Gitea; still live
r01-forgejo-db railiance01 forgejo-db forgejo Yes Forgejo production — only instance
core-net-kingdom-pg CoulombCore net-kingdom-pg interhub, privacyidea_db Yes (dual) Backup both until app DSN audit confirms single host
r01-net-kingdom-pg railiance01 net-kingdom-pg interhub, privacyidea_db, probe Yes (dual) Extra probe DB on R01 only
core-state-hub-db CoulombCore state-hub-db state_hub Yes (dual) Hub may run against either instance historically
r01-state-hub-db railiance01 state-hub-db state_hub Yes (dual) activity-core / local hub proximity

Dual-host policy

Until a consumer DSN audit proves a single POR for Net Kingdom and State Hub:

  • Backup both Core and R01 instances (different Nextcloud prefixes: core-* vs r01-*).
  • Restore drills must name the host + cluster, not only the DB name.

Out of backup scope (this workplan)

  • CNPG system DB postgres
  • Temporary drill DBs
  • App media PVCs (vergage media disabled)

Runner mapping

Implemented in railiance-platform/tools/cmd/cnpg-option-a-backup default target list. Override with CNPG_BACKUP_TARGETS=core-apps-pg,r01-forgejo-db.