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docs(phase4): production infrastructure documentation + runbooks

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Master overview (PHASE4_PRODUCTION_INFRASTRUCTURE.md) plus five detail docs
(PRODUCTION_DEPLOYMENT, PRODUCTION_NETWORK_SECURITY, BACKUP_DR,
OBSERVABILITY, CAPACITY_PLANNING), a master PRODUCTION_VALIDATION_CHECKLIST,
and 12 runbooks (first deployment, normal deploy, rollback, Postgres
restore, VM rebuild for both hosts, Docker TLS rotation, TLS renewal, owner
recovery, stuck Lab cleanup, failed migration, backup failure, disk
failure, Lab Host resource pressure).

PRODUCTION_NETWORK_SECURITY.md prominently documents the one genuine
architectural gap this phase surfaced: the Gateway's existing
env.internal_ip mechanism for reaching a Lab container assumes Gateway and
Lab share a Docker daemon, which breaks once Labs run on a genuinely
separate rn-lab-host-01 VM. The network-policy half is built (a firewall
allowance for Gateway->Lab-Host on a published port range); the
application half (Provisioner/Gateway address handling) is an explicit,
reviewed, NOT-YET-BUILT follow-up flagged there rather than silently
decided.

Updated LAB_ARCHITECTURE.md, ENGINEERING_SOP.md, README.md, and
platform/README.md with Phase 4 pointers, consistent with how every prior
phase updated these.

Status: PHASE 4 BUILD COMPLETE / PRODUCTION DEPLOYMENT PENDING HARDWARE.
This commit is contained in:
ced4568
2026-08-18 17:13:51 -05:00
parent 1d3afc736b
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platform/README.md
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@@ -78,3 +78,12 @@ See `provisioner/README.md` (Phase 1), `docs/PHASE2A_GATEWAY_AND_STUDENT_FLOW.md
2A), `docs/PHASE3A_IDENTITY_AND_INSTRUCTOR_ACCESS.md` (Phase 3A identity limitations), and
`docs/PHASE3B_LEARNING_AND_ASSESSMENT.md` §20 (Phase 3B learning/assessment limitations) for the
full, honest lists.
## Running this in production
`../infra/` has the full production infrastructure package (Ansible, Terraform, firewall,
monitoring, backup, CI/CD) for deploying the Platform API/Gateway/Provisioner/Postgres onto a
dedicated `rn-platform-01` VM, with student Labs on a separate `rn-lab-host-01` VM. See
`../docs/PHASE4_PRODUCTION_INFRASTRUCTURE.md` for the overview and
`../docs/PRODUCTION_NETWORK_SECURITY.md` for a known gap in Gateway-to-Lab reachability across
two real VMs that must be closed before production go-live.