Tag: certbot
All PKI knowledge base pages tagged with "certbot".
- Certbot Commands Reference 2026: certonly, renew, certificates, dns-01 – Full Guide — Complete 2026 Certbot command reference: certonly, renew, certificates, dns-01, rate-limiting, hooks, and production one-liners. Every flag explained with real-world examples.
- Certbot DNS-01 Challenge: Wildcard Certificates & TXT Record Setup (2026) — Complete DNS-01 guide for Certbot: wildcard + multi-domain certs, exact _acme-challenge TXT record setup, rate-limit fixes, credential security, and troubleshooting that actually works in production.
- Certbot Renewal Automation: Deploy Hooks, Cron Jobs & --dry-run Testing — Automate Certbot SSL renewal with deploy hooks, cron jobs, and systemd timers. Includes --post-hook examples for nginx reload and --dry-run testing.
- Certbot Version Check: Commands & Usage — Commands to check Certbot versions across snap, pip, and system installs—verify ACMEv2 and ARI (4.1.0+) compliance, resolve conflicts, and automate fleet auditing.
- Certbot Version Check: Requirements, Deprecations & Update Methods — Check Certbot version to confirm ACMEv2 (0.31.0+) and ARI (4.1.0+) support before shorter certificate lifetimes arrive. Use snap for automatic updates.
- Certificate Automation Readiness: ACME, ARI, and the 47-Day Mandate — Assess automation readiness for short TLS lifetimes: ACME maturity, ARI (RFC 9773), client support, four-level maturity model, and a practical readiness checklist.
- HTTP-01 Challenge Commands & Usage — Certbot and ACME client command reference for HTTP-01 validation—webroot, multi-domain, custom ports, and renewal patterns for production certificate automation.
- Install Certbot 2026: Ubuntu snap, Docker, Windows – Step-by-Step — Fastest way to install Certbot on Ubuntu, Debian, Docker, CentOS, or Windows in 2026. Includes snap vs apt, plugin setup, common permission errors, and production-ready one-liners.
- Rate Limiting Commands & Usage — Avoid hitting Let's Encrypt rate limits: certbot --dry-run, staging workflows, CT log monitoring, and renewal commands that preserve your weekly quota.
- Version Check Tools Overview — Audit ACME client versions across your infrastructure. Ensure ACMEv2 (0.31.0+) and ARI (4.1.0+) compliance before outdated clients cause certificate renewal failures