Will Anderson
93358505fc
Security: - Drop ALL capabilities, enforce non-root, RuntimeDefault seccomp on neuron-mcp, neuron-rest, neuron-marketing pods - Add startup probes (150s window for JVM) so liveness doesn't fire early - Replace docker-sock hostPath with BuildKit rootless TCP endpoint (moby/buildkit:v0.19.0-rootless) — removes node root access from CI - Document full ESO AppRole migration path in cluster-secret-store.yaml Autoscaling & availability: - HPAs on mcp (1–6), rest (1–4), marketing (2–8) at 65–70% CPU - PodDisruptionBudgets (minAvailable: 1) on all three services - NetworkPolicy: default-deny-all in neuron-prod, explicit allow rules for Traefik ingress, intra-namespace, and egress to DNS/platform/vault Observability: - ServiceMonitors for mcp, rest, marketing (cross-namespace enabled in kube-prometheus-stack with serviceMonitorSelectorNilUsesHelmValues:false) - PrometheusRules: high error rate, high latency, crash loops, replica shortage, Postgres down/connections, backup failure, backup staleness Chart version pinning: - kube-prometheus-stack, loki, tempo, redis, alloy, postgres — all pinned to major-version ranges to block silent breaking upgrades Backup hardening: - restic:latest → restic:0.17.3 (deterministic image) - Weekly backup-verify CronJob: restores latest snapshot and validates SQL dump structure (≥5 CREATE TABLE, pg_dump header check) ArgoCD: - neuron-prod AppProject: scopes deploys to neuron-prod + platform ns, blacklists ClusterRole/ClusterRoleBinding/Namespace creation, automated sync window 2–6am UTC, manual always allowed
125 lines
3.4 KiB
YAML
125 lines
3.4 KiB
YAML
---
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# NetworkPolicies for neuron-prod
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# Default-deny all ingress and egress, then explicitly allow only what's needed.
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# Enforced by k3s's built-in NetworkPolicy controller.
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# ── Baseline: deny all traffic in namespace ───────────────────────────────────
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apiVersion: networking.k8s.io/v1
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kind: NetworkPolicy
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metadata:
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name: default-deny-all
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namespace: neuron-prod
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spec:
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podSelector: {}
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policyTypes:
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- Ingress
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- Egress
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---
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# ── neuron-mcp: accept traffic from Traefik (kube-system) only ───────────────
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apiVersion: networking.k8s.io/v1
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kind: NetworkPolicy
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metadata:
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name: allow-mcp-ingress
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namespace: neuron-prod
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spec:
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podSelector:
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matchLabels:
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app: neuron-mcp
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policyTypes:
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- Ingress
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ingress:
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- from:
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: kube-system
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: neuron-prod
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---
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# ── neuron-rest: accept from mcp, kube-system (Traefik), monitoring (Alloy) ──
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apiVersion: networking.k8s.io/v1
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kind: NetworkPolicy
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metadata:
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name: allow-rest-ingress
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namespace: neuron-prod
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spec:
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podSelector:
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matchLabels:
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app: neuron-rest
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policyTypes:
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- Ingress
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ingress:
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- from:
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: kube-system
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: neuron-prod
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: monitoring
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---
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# ── neuron-marketing: accept from Traefik only ───────────────────────────────
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apiVersion: networking.k8s.io/v1
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kind: NetworkPolicy
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metadata:
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name: allow-marketing-ingress
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namespace: neuron-prod
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spec:
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podSelector:
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matchLabels:
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app: neuron-marketing
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policyTypes:
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- Ingress
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ingress:
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- from:
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: kube-system
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---
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# ── Egress: all prod pods may reach platform (postgres/redis), vault,
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# monitoring (alloy OTLP), kube-dns, and the internet (external APIs) ─
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apiVersion: networking.k8s.io/v1
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kind: NetworkPolicy
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metadata:
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name: allow-prod-egress
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namespace: neuron-prod
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spec:
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podSelector: {}
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policyTypes:
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- Egress
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egress:
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# Kubernetes DNS
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- ports:
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- port: 53
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protocol: UDP
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- port: 53
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protocol: TCP
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# platform namespace (Postgres, Redis, accounts service)
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- to:
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: platform
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# vault namespace
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- to:
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: vault
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# monitoring namespace (Alloy OTLP)
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- to:
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: monitoring
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# intra-namespace (mcp ↔ rest ↔ license)
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- to:
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: neuron-prod
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# external internet (Stripe, OAuth providers, Cloudflare, etc.)
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- ports:
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- port: 443
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protocol: TCP
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- port: 80
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protocol: TCP
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