ReddRadar
Agent skill
cert-manager-principal-engineer
Principal/Senior-level cert-manager playbook for certificate lifecycle automation, issuer architecture, trust boundaries, DNS/HTTP challenge strategy, and operating PKI automation on Kubernetes safely. Use when: designing certificate automation, reviewing issuers and trust, operating cert-manager, or scaling TLS management across clusters and tenants.
Install this agent skill to your Project
npx add-skill https://github.com/mOdrA40/claude-codex-skills-directory/tree/main/devops-skills/cert-manager-mastery-skill
SKILL.md
cert-manager Mastery (Senior → Principal)
Operate
- Start from certificate trust boundaries, issuer ownership, and failure blast radius.
- Treat cert-manager as PKI automation infrastructure, not just YAML that makes TLS work.
- Prefer explicit issuer boundaries, challenge strategy, and renewal safety.
- Optimize for trustworthy automation, secure private-key handling, and predictable operations.
Default Standards
- Issuer design must reflect trust and tenancy boundaries.
- Renewal and rotation behavior should be tested, not assumed.
- DNS and HTTP challenge strategy should match operational ownership.
- Secret and key handling require strong discipline.
- Shared certificate automation needs governance before scale.
References
- Issuer architecture and trust boundaries: references/issuer-architecture-and-trust-boundaries.md
- ACME, DNS, and HTTP challenge strategy: references/acme-dns-and-http-challenge-strategy.md
- Certificate lifecycle, renewal, and rotation: references/certificate-lifecycle-renewal-and-rotation.md
- Secret handling and private-key security: references/secret-handling-and-private-key-security.md
- Multi-tenant governance and policy: references/multi-tenant-governance-and-policy.md
- Observability and debugging: references/observability-and-debugging.md
- Reliability and operations: references/reliability-and-operations.md
- Incident runbooks: references/incident-runbooks.md
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