Files
certctl/docs
shankar0123 426760d737 docs: Phase 13 — README rewrite to 250-line target
Per Phase 1 audit at cowork/docs-overhaul-phase-1-audit-2026-05-04/.
README went from 457 lines to a target of 250 (operator decision in
Phase 1 conversation). Focus shifts from feature-catalog + landing-page
duplicate to "developer cloning the repo needs orientation + quickstart
+ entry points to docs."

What stayed:
  - Logo + title + badges (~15 lines)
  - Elevator paragraph + 47-day cliff context (3 paragraphs, compressed)
  - Active-maintenance callout
  - Documentation table — restructured from 22 entries linking to flat
    docs/ to ~6 audience-organized rows linking through the new
    docs/README.md navigation index
  - Screenshots grid (4 tiles)
  - "What it does" — compressed from 33 lines of prose to 8 capability
    bullets, each linking to the canonical doc
  - Architecture paragraph — compressed to one paragraph linking to
    docs/reference/architecture.md
  - Quick Start (Docker Compose, Agent install, Helm, container images)
  - Examples table (5 turnkey scenarios)
  - Development commands
  - License paragraph
  - Dependencies block
  - Footer CTA

What got moved out:
  - Cosign verification / SLSA / SBOM section (67 lines) →
    docs/reference/release-verification.md (NEW). README links to it
    in a 3-line "Verifying a release" section.

What got removed entirely:
  - "Why certctl" + "Architecture" + "Security-first" + "Key design
    decisions" prose walls — duplicated landing page + architecture.md +
    security.md content. README no longer wades through 11 dense
    paragraphs.
  - "Supported Integrations" 4 sub-tables (Issuers / Targets / Protocols
    / Standards / Notifiers, ~80 lines of dense per-row marketing
    copy) — content lives at docs/reference/connectors/index.md and
    docs/reference/protocols/. README mentions counts ("12 issuers, 15
    targets, 6 notifiers") with a single link.
  - "Roadmap" section entirely — V1 + V2 history rotted fastest of any
    section; replaced with implicit "see Releases + Issues for active
    work" via the existing footer CTA.
  - "What It Does" 10-subsection wall (33 lines) — replaced with the
    8-bullet capability list, each linking to its canonical doc.
  - CLI section (20 lines of inline command examples) — links to the
    contributor docs.
  - MCP Server section (30 lines of setup) — links to docs/reference/mcp.md.

New surface added:
  - docs/reference/release-verification.md — moved cosign/SLSA/SBOM
    procedure with one expanded "Why this matters" paragraph
    explaining the keyless OIDC trust anchor.

Every docs/ link in the new README verified to resolve to an existing
file. Cross-references from other docs / certctl.io to the deleted
sections (if any) need follow-up Phase 11 sweeps.
2026-05-05 03:26:05 +00:00
..

certctl Documentation

Last reviewed: 2026-05-05

The full docs index, organized by audience. Pick the section that matches what you need to do; each link below opens a focused doc rather than a wall of text.

For the elevator pitch and quickstart commands, see the repo README.md at the root. For the marketing site, see certctl.io.


Getting Started

You're new to certctl, just cloned the repo, or want to understand what it does before installing.

Doc What it covers
Concepts TLS certificates explained for beginners — CAs, ACME, EST, private keys, the full glossary
Quickstart Five-minute setup with Docker Compose, dashboard tour, API tour
Examples Five turnkey scenarios — ACME+NGINX, wildcard DNS-01, private CA+Traefik, step-ca+HAProxy, multi-issuer
Advanced demo End-to-end certificate lifecycle with technical depth at each step
Why certctl Positioning vs ACME clients, agent-based SaaS, enterprise platforms; when to look elsewhere

Reference

You're operating certctl in production or building integrations and need authoritative technical detail.

Doc What it covers
Architecture System design, data flow, security model, deployment topologies
API OpenAPI 3.1 spec, integration patterns, client SDK generation
MCP server Model Context Protocol integration for AI assistants
Intermediate CA hierarchy Multi-level CA tree management — RFC 5280 §3.2/§4.2.1.9/§4.2.1.10 enforcement
Deployment model Atomic write, post-deploy verify, rollback semantics across all targets
Vendor matrix Tested vendor versions per target connector

Connectors

Doc What it covers
Connector index Issuer/target/notifier interface contracts, registry, scanners
Apache Apache httpd connector deep dive
F5 BIG-IP F5 connector — proxy agent + transactional iControl REST
IIS Microsoft IIS — local PowerShell + WinRM modes
Kubernetes Secrets Kubernetes Secrets connector
NGINX NGINX connector — deploy contract + quirks

Protocols

Doc What it covers
ACME server Run certctl as an RFC 8555 + RFC 9773 ARI ACME server
ACME server threat model Security posture for the ACME server endpoint
SCEP server RFC 8894 native SCEP server — RA cert config, multi-profile dispatch, must-staple, mTLS sibling route
SCEP for Microsoft Intune Intune-specific deployment guide — NDES replacement playbook
EST server RFC 7030 EST server — 802.1X / Wi-Fi enrollment, IoT bootstrap, channel binding
CRL & OCSP RFC 5280 CRL + RFC 6960 OCSP responder for relying parties
Async CA polling Bounded polling for async-CA issuer connectors

Operator

You're running certctl in production and need operational guidance.

Doc What it covers
Security posture Auth, rate limits, encryption at rest, key rotation
Control plane TLS Self-signed bootstrap, operator-supplied Secret, cert-manager Certificate CR
Database TLS PostgreSQL transport encryption
Approval workflow Two-person integrity gate for high-stakes issuance
Legacy clients (TLS 1.2) Reverse-proxy runbook for embedded EST/SCEP clients on TLS 1.2

Runbooks

Runbook When
Cloud targets AWS ACM + Azure Key Vault deployment, debugging, rollback
Expiry alerts Per-policy multi-channel routing matrix, severity tiers
Disaster recovery CRL cache, OCSP responder cert, CA private-key rotation, Postgres restore

Migration

You're moving from another cert-management tool to certctl, or running both in parallel.

From Doc
Certbot migration/from-certbot.md
acme.sh migration/from-acmesh.md
cert-manager (coexistence, not replacement) migration/cert-manager-coexistence.md
Caddy ACME (point Caddy at certctl) migration/acme-from-caddy.md
cert-manager ACME (point cert-manager at certctl) migration/acme-from-cert-manager.md
Traefik ACME (point Traefik at certctl) migration/acme-from-traefik.md

Compliance

You're working through a SOC 2, PCI, or NIST audit and need to map certctl's capabilities to control objectives.

Doc What it covers
Compliance overview What these guides cover and what they don't
SOC 2 Type II Trust Service Criteria mapping (CC6, CC7, CC8, A1)
PCI-DSS 4.0 Requirements 3, 4, 6, 7, 8, 10
NIST SP 800-57 Key management alignment with NIST guidance

Contributor

You're contributing to certctl, running tests locally, or trying to understand the CI pipeline.

Doc What it covers
Testing strategy What we test and why; per-PR fast gates vs daily deep-scan
Test environment Local environment with real CAs (Pebble, step-ca, etc.)
QA test suite qa_test.go reference for release QA
CI pipeline CI shape, regression guards, adding new checks

Archive

Historical docs preserved for reference. Most operators don't need these.

Doc Why archived
Upgrade to TLS (v2.2) Pre-v2.2 HTTPS-everywhere upgrade procedure
Upgrade past v2 JWT removal G-1 milestone JWT auth removal procedure

Reading order by role

First-time operator: ConceptsQuickstartExamples. About 90 minutes end to end.

Production operator: ArchitectureSecurity postureControl plane TLSDisaster recovery runbook. About 4 hours end to end.

PKI engineer: ACME serverSCEP serverEST serverIntermediate CA hierarchy. About 6 hours end to end.

Auditor / compliance team: Compliance overview → applicable framework doc → Disaster recovery runbookApproval workflowACME server threat model. About 4 hours end to end.

Contributor: ArchitectureTesting strategyTest environmentCI pipeline. About 3 hours end to end.