From 8c07c36af7b0e7c4c0cc85d3c7aef35144c5af0d Mon Sep 17 00:00:00 2001 From: Michael Mainguy Date: Thu, 24 Jul 2025 17:32:06 -0400 Subject: [PATCH] Drop 5 initial commit. --- RETAILCLOUDDROP5.md | 170 ++++++++++++++++++++++++++++++++++++++++++++ RETAILCLOUDDROP6.md | 0 2 files changed, 170 insertions(+) create mode 100644 RETAILCLOUDDROP5.md create mode 100644 RETAILCLOUDDROP6.md diff --git a/RETAILCLOUDDROP5.md b/RETAILCLOUDDROP5.md new file mode 100644 index 0000000..f81f806 --- /dev/null +++ b/RETAILCLOUDDROP5.md @@ -0,0 +1,170 @@ +**Drop 5 – Governance at the Edge: Security, Compliance, Resilience (without 2 AM panics)** +*Series: “Edge Renaissance—putting compute (and the customer) back where they belong.”* + +--- + +### ☕ Executive espresso (60‑second read) + +* **500 closets ≠ 500 snowflakes.** Treat every store like a tiny cloud region: immutable builds, GitOps, and automated patch waves. +* **Keep sensitive stuff local, prove it centrally.** Shrink PCI/GDPR scope by processing and storing data in‑store, exporting only the minimum. +* **Assume nodes fail, links drop, auditors knock.** Backups, cert rotation, zero‑trust tunnels, and health probes are table stakes—so script them. + +> **Bottom line:** Governance isn’t a tax on innovation—it’s the enabler that lets you scale edge wins without waking ops at 2 AM or failing your next audit. + +--- + +## 1️⃣ The four pillars of edge governance + +| Pillar | Goal | Core patterns | +| -------------- | ----------------------------------- | ------------------------------------------- | +| **Security** | Only trusted code & people touch it | Zero‑trust mesh, signed images, Vault | +| **Compliance** | Prove control, minimize scope | Data locality, audit trails, policy‑as‑code | +| **Resilience** | Survive node/WAN failures | Ceph replicas, PBS backups, runbooks | +| **Operations** | Ship, patch, observe at scale | GitOps, canary waves, fleet telemetry | + +--- + +## 2️⃣ “Central brain, local autonomy” architecture + +``` + Git (single source of truth) ───► CI/CD (build, sign, scan) + │ + ▼ + Artifact registry (images, configs) + │ + ┌──────────────┴──────────────┐ + ▼ ▼ + Store Cluster A Store Cluster B ... (×500) + (pulls signed bundle) (pulls signed bundle) +``` + +* **Push nothing, let sites pull.** Firewalls stay tight; stores fetch on schedule over WireGuard. +* **Everything is versioned.** Configs, edge functions, models, Ceph rules—Git is law. + +--- + +## 3️⃣ Security: zero‑trust by default + +``` +🔐 Identity & Access +• Short‑lived certs for nodes (ACME) and humans (SSO + MFA) +• RBAC in Proxmox; no shared “root” logins + +🧩 Code & Images +• SBOM for every container/VM +• Sign with Cosign; verify before deploy + +🕳 Network +• WireGuard/VPN mesh, least‑privilege ACLs +• Local firewalls (nftables) deny by default + +🗝 Secrets +• Vault/Sealed Secrets; no creds baked into images +• Auto‑rotate API keys & TLS every 60–90 days +``` + +--- + +## 4️⃣ Compliance: make auditors smile (quickly) + +| Common ask | Show them… | How edge helps | +| -------------------------------------- | ---------------------------------------------- | -------------------------------------------- | +| **PCI DSS 4.0**: “Where is card data?” | Data flow diagram + local tokenization service | Card data never leaves store LAN in raw form | +| **GDPR/CCPA**: Data minimization | Exported datasets with PII stripped | Only roll‑ups cross WAN; raw stays local | +| **SOC2 Change Mgmt** | Git history + CI logs | Every change is PR’d, reviewed, merged | +| **Disaster Recovery plan** | PBS snapshots + restore tests | Proven RPO/RTO per site, not promises | + +> **Tip:** Automate evidence capture—export config/state hashes nightly to a central audit bucket. + +--- + +## 5️⃣ Resilience: design for “when,” not “if” + +``` +Node failure → Ceph 3× replication + live‑migration +WAN outage → Local DNS/cache/APIs keep serving; queue sync resumes later +Config rollback → Git revert + CI tag; clusters pull last good bundle +Store power loss → UPS ride‑through + graceful shutdown hooks +``` + +**Backup strategy:** + +``` +Nightly: + Proxmox Backup Server (PBS) → deduped snapshots → S3/cheap object store +Weekly: + Restore test (automated) on a staging cluster, report success/fail +Quarterly: + Full DR drill: rebuild a store cluster from bare metal scripts +``` + +--- + +## 6️⃣ Operations: patch, observe, repeat + +**Patch pipeline (example cadence):** + +``` +Mon 02:00 Build & scan images (CI) +Tue 10:00 Canary to 5 pilot stores +Wed 10:00 Wave 1 (50 stores) after health OK +Thu 10:00 Wave 2 (200 stores) +Fri 10:00 Wave 3 (rest) +``` + +**Observability stack:** + +* **Metrics/logs:** Prometheus + Loki (local scrape → batched upstream). +* **SLOs to watch:** + + * Cache hit rate (%), TTFB p95 (ms) + * POS transaction latency (ms) + * WAN availability (%), sync backlog (# items) + * Patch drift (stores on N‑2 version) + +Set alerts on *trends*, not one‑off spikes. + +--- + +## 7️⃣ Example repo layout (GitOps ready) + +``` +edge-infra/ +├─ clusters/ +│ ├─ store-001/ +│ │ ├─ inventory-api.yaml +│ │ └─ varnish-vcl.vcl +│ └─ store-002/ ... +├─ modules/ +│ ├─ proxmox-node.tf +│ ├─ ceph-pool.tf +│ └─ wireguard-peers.tf +├─ policies/ +│ ├─ opa/ (Rego rules for configs) +│ └─ kyverno/ (K8s/LXC guardrails) +├─ ci/ +│ ├─ build-sign-scan.yml +│ └─ deploy-waves.yml +└─ docs/ + ├─ dr-runbook.md + ├─ pci-dataflow.pdf + └─ sla-metrics.md +``` + +--- + +## 8️⃣ This week’s action list + +1. **Inventory governance gaps:** Which of the 4 pillars is weakest today? Rank them. +2. **Automate one scary thing:** e.g., cert rotation or nightly PBS snapshot verification. +3. **Define 3 SLOs & wire alerts:** TTFB p95, cache hit %, patch drift. +4. **Pilot the patch wave:** Pick 5 stores, run a full CI → canary → rollback drill. +5. **Create audit evidence bot:** Nightly job exports hashes/configs to “/audit/edge/YYYY‑MM‑DD.json”. + +--- + +### Next up ➡️ **Drop 6 – Roadmap & ROI: Your First 90 Stores** + +We’ll stitch it all together: sequencing, staffing, KPIs, and the board‑ready business case. + +*Stay subscribed—now that your edge is safe, it’s time to scale it.* diff --git a/RETAILCLOUDDROP6.md b/RETAILCLOUDDROP6.md new file mode 100644 index 0000000..e69de29