67476ea59b
Same skills in .agents/skills (Codex) and .claude/skills (Claude Code): codeguard, security-review, dependency-vetting, pre-release-gate, authz-idor-audit, threat-model-light. Source: cj/claude-skills. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
35 lines
1.7 KiB
Markdown
35 lines
1.7 KiB
Markdown
---
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description: Kubernetes hardening (RBAC, admission policies, network policies, secrets, supply chain)
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languages:
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- yaml
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alwaysApply: false
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tags:
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- infrastructure
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---
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rule_id: codeguard-0-cloud-orchestration-kubernetes
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## Cloud & Orchestration (Kubernetes)
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Kubernetes cluster and workload hardening: identity, policy, networking, secrets, and supply chain controls.
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### Controls
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- Identity & RBAC: least privilege for users and service accounts; separate namespaces; bind only needed roles.
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- Policy: admission controls (OPA/Gatekeeper/Kyverno) for image sources, capabilities, root, network policies, and required labels/annotations.
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- Networking: default‑deny with network policies; explicit egress allow‑lists; service identity/mTLS within mesh where applicable.
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- Secrets: use KMS providers; avoid plaintext in manifests; rotate regularly; restrict secret mount paths.
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- Nodes: hardened OS, auto‑updates, minimal attack surface; isolate sensitive workloads with taints/tolerations and dedicated nodes.
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- Supply chain: verify image signatures; enforce provenance (SLSA/Sigstore) in admission.
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### Checklist
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- Namespaces per team/app; RBAC roles scoped; audit logging enabled.
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- Admission policies enforce image provenance, non‑root, dropped capabilities, read‑only root FS, and network policy presence.
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- Network policies in place for ingress/egress; service accounts scoped per deployment.
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### Verification
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- Cluster conformance and CIS benchmark scans.
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- Policy tests in CI for manifests (OPA unit tests); periodic admission dry‑run.
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### Incident Readiness
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- Enable audit logs and centralize; restrict access to etcd; backup/restore tested.
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- Define break‑glass roles with MFA and time‑bound approvals.
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