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, version and package manager (apt or dnf)
  2. 02reconDocker Engine + compose plugin present and running? (otherwise, docker step)
  3. 03reconmattermost already deployed (containers, volumes, /opt/mattermost)? healthy → verify and skip; never overwrite its data
  4. 04reconlocal port 8065 free? is a reverse proxy already on 80/443?
  5. 05reconRAM ≥ 2 GB and a few GB of free disk
  6. 06actInstall Docker Engine + Compose (only if missing)verify
  7. 07actGenerate the secrets (/opt/mattermost/.env)verify
  8. 08actWrite /opt/mattermost/compose.yamlverify
  9. 09actStart the stackverify
  10. 10actThe API respondsverify
  11. 11actHTTPS reverse proxy (only if a domain is provided)verify

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 Docker Engine + Compose (only if missing)Verified bysystemctl is-active docker && docker compose version
  2. 02Generate the secrets (/opt/mattermost/.env)Verified bystat -c '%a' /opt/mattermost/.env && grep -c '=' /opt/mattermost/.env
  3. 03Write /opt/mattermost/compose.yamlVerified bydocker compose -f /opt/mattermost/compose.yaml config -q && echo ok
  4. 04Start the stackVerified bydocker compose -f /opt/mattermost/compose.yaml ps --status running --format "{{.Service}}"
  5. 05The API respondsVerified bytimeout 180 bash -c 'until curl -s -o /dev/null http://127.0.0.1:8065/api/v4/system/ping; do sleep 5; done'; curl -s -o /dev/null -w '%{http_code}' http://127.0.0.1:8065/api/v4/system/ping
  6. 06HTTPS reverse proxy (only if a domain is provided)Verified 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.

DB password in /opt/mattermost/.env (600), never displayed. Mattermost listens on 127.0.0.1; exposure goes through the HTTPS reverse proxy (WebSocket included). The first account created becomes system admin: create it right away. Do not delete any existing volume.

SEC.04

Variables

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

NameMeaning
${domain}Domain (optional)

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 Mattermost 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/install-mattermost)

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.