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.
- 01recondistro and version: apt (Debian/Ubuntu) or dnf (RHEL/Fedora/Rocky/Alma)?
- 02reconSyncthing already installed? which version?
- 03recondoes a syncthing@… service already exist, and for which user?
- 04reconport 8384 (GUI) already taken, and by what? empty = free; taken → ask for another port (ask_user)
- 05reconport 22000 (sync) already taken, and by what? empty = free; taken → ask for another port (ask_user)
- 06reconis a firewall (ufw or firewalld) active?
- 07actAdd the official repository (Debian/Ubuntu) or EPELverify
- 08actInstall Syncthingverify
- 09actCreate the user (only if it does not exist)verify
- 10actEnable the syncthing@user serviceverify
- 11actProtect the GUI with a passwordverify
- 12actThe GUI responds locallyverify
- 13actOpen the sync ports (only if a firewall is active)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.
- 01verifyAdd the official repository (Debian/Ubuntu) or EPELVerified by
apt-cache policy syncthing 2>/dev/null | grep -c apt.syncthing.net || dnf info syncthing 2>/dev/null | grep -c Version - 02verifyInstall SyncthingVerified by
syncthing --version - 03verifyCreate the user (only if it does not exist)Verified by
id -u ${user} - 04verifyEnable the syncthing@user serviceVerified by
systemctl is-active syncthing@${user} - 05verifyProtect the GUI with a passwordVerified by
sudo -H -u ${user} syncthing cli config gui user get - 06verifyThe GUI responds locallyVerified by
curl -s -o /dev/null -w '%{http_code}' http://127.0.0.1:8384/rest/noauth/health - 07verifyOpen the sync ports (only if a firewall is active)Verified by
ufw status 2>/dev/null | grep ALLOW; firewall-cmd --list-ports 2>/dev/null; true
SEC.03
Guardrails
Non-negotiable instructions the run must respect, whatever it finds on the server.
Syncthing already active for a user → verify and report, do not reinstall and do not touch its config. Never run Syncthing as root. The GUI (8384) stays on 127.0.0.1 and is never opened in the firewall. Open only 22000/tcp, 22000/udp and 21027/udp.
SEC.04
Variables
What you choose before launching — the recipe fills in the rest.
| Name | Meaning |
|---|---|
| ${user} | System user that runs Syncthing (not root) |
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.
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 Syncthing 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.
SEC.07
More self-hosted recipes
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- 04NextcloudNextcloud (file cloud) via Docker Compose: PostgreSQL, Redis, cron, admin created automatically.
- 05JellyfinJellyfin media server via Docker Compose, media folder mounted read-only, HTTPS when a domain is provided.
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.