SEC.01

The playbook

The run starts read-only: the recon probes decide what happens next. The steps that follow are adapted to the distribution and state found — a real machine is rarely clean.

  1. 01recondistro and version: apt (Debian/Ubuntu) or dnf (RHEL/Fedora/Rocky/Alma)?
  2. 02reconCertbot already present (package or snap)?
  3. 03recondoes a certificate already exist for this domain? when does it expire?
  4. 04reconis the chosen web server running? (required by the certbot plugin)
  5. 05recondoes the domain point to this server’s public IP?
  6. 06reconis a firewall (ufw or firewalld) active?
  7. 07actInstall Certbot + ${webserver} pluginverify
  8. 08actIssue the certificateverify
  9. 09actAutomatic renewalverify
  10. 10actHTTPS respondsverify

SEC.02

What it verifies

Each step ships its own check. The run only moves on when the check passes, so what the recipe reports as done is what is actually on the server.

  1. 01Install Certbot + ${webserver} pluginVerified bycertbot --version
  2. 02Issue the certificateVerified bycertbot certificates -d ${domain} 2>/dev/null | grep -c "VALID"
  3. 03Automatic renewalVerified bysystemctl list-timers --all 2>/dev/null | grep -c certbot
  4. 04HTTPS respondsVerified bycurl -s -o /dev/null -w '%{http_code}' https://${domain}/

SEC.03

Guardrails

Non-negotiable instructions the run must respect, whatever it finds on the server.

The domain must point to this server (A/AAAA) and port 80 must be reachable before issuance. Respect the rate limits: never loop on attempts, test with --dry-run. Do not revoke or delete an existing certificate.

SEC.04

Variables

What you choose before launching — the recipe fills in the rest.

NameMeaning
${domain}Domain
${email}Email
${webserver}Web server

SEC.05

How a recipe runs in Servor

Servor is zero-knowledge: the platform cannot execute anything on its own. When you launch this recipe, a run reads the reconnaissance, plans the steps and asks for your approval. Each approved command is signed by your browser — with a key the server never sees — then relayed verbatim to the agent, which verifies the signature locally before executing.

recipe — fail2ban_setup150+ in catalogue
security4 steps · low risk · idempotentrun
reconsshd present? ufw active? existing jails?✓
actinstall fail2ban · write default jails✓
actenable service · restart sshd (safe)✓
verifytest ban 60s · jails active · sshd alive✓

search by intent — type “firewall”, get ufw

  • 01Read-only reconnaissance before any change
  • 02Every command signed by your browser, approved by you
  • 03Each step verified before the run moves on, every run kept in the history

SEC.06

Deploy on Servor button

Maintain Let's Encrypt certificate or a project that needs it? Put this button in your README or on your site: one click and your users install it on their own server.

Deploy on ServorDark background
Deploy on ServorLight background
[![Deploy on Servor](https://servor.app/badges/deploy-on-servor.svg)](https://servor.app/deploy/setup-letsencrypt)

SEC.07

Verified recipe

Run this recipe on your server

Connect a server, launch the recipe, and approve each step as Servor executes and verifies it. Free plan, no card required.