notplantsandClaude Fable 5.1
8f7f125fc0
Operator 2026-09-07: the combined host stays off the tailnet. ssh is key-only (password + keyboard-interactive auth off), the opencode UI is served as oc.ci.commoninternet.net on 8443 — TLS from the CI server's *.ci.commoninternet.net ACME cert (new orchestrator-host option opencodeUiAcmeHost; nginx joins the acme group) behind the existing basic auth — and fail2ban watches sshd plus nginx's 401s (nginx-http-auth jail). tailscaled ordering dropped from the orchestrator units. README updated. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FqkQq3CDmFWcQ7u1LzoyRz
89 lines
4.3 KiB
Nix
89 lines
4.3 KiB
Nix
# cc-ci — ONE Hetzner Cloud host running both the cc-ci CI server and the cc-ci orchestrator.
|
||
#
|
||
# This file is only what is physical or identity about the machine: hardware, networking,
|
||
# root SSH keys, firewall + fail2ban, swap, stateVersion. Everything functional comes from modules:
|
||
# cc-ci.nixosModules.cc-ci-server recipe-maintainers/cc-ci — swarm, traefik, drone,
|
||
# runner, bridge, dashboard, reports, acme-dns, harness
|
||
# self.nixosModules.cc-ci-orchestrator nix/modules/cc-ci.nix — loops, orchestrator, timers
|
||
# self.nixosModules.orchestrator-host nix/modules/orchestrator-host.nix — loops user, CLIs
|
||
# See README.md for provisioning (Hetzner Debian → nixos-infect → this flake) and staging.
|
||
{ lib, pkgs, ... }:
|
||
{
|
||
imports = [
|
||
./hardware.nix
|
||
./networking.nix
|
||
];
|
||
|
||
networking.hostName = "cc-ci";
|
||
|
||
# ---- cc-ci server identity --------------------------------------------------------------
|
||
# Public address: acme-dns binds to it and publishes it as the `ns-acme` glue record; the
|
||
# Gandi A records for ci / *.ci / ns-acme .commoninternet.net point here.
|
||
cc-ci.publicIPv4 = "195.201.88.249";
|
||
# cc-ci is a plain flake input here (no private submodule), so the sops file is the one in
|
||
# the deployed --recursive checkout the weekly sweep runs from (README "Stage the workspace").
|
||
cc-ci.sopsFile = "/etc/cc-ci/secrets/secrets.yaml";
|
||
|
||
# ---- orchestrator identity --------------------------------------------------------------
|
||
# The CI server is this very host, so `ssh cc-ci` goes to loopback (the module default).
|
||
cc-ci-orchestrator.ciSshHost = "127.0.0.1";
|
||
# The opencode UI rides the CI server's Let's Encrypt wildcard (*.ci.commoninternet.net).
|
||
cc-ci-orchestrator.opencodeUiHost = "oc.ci.commoninternet.net";
|
||
cc-ci-orchestrator.opencodeUiAcmeHost = "ci.commoninternet.net";
|
||
|
||
# ---- no tailscale on this host (operator 2026-09-07) --------------------------------------
|
||
# Everything is reached over the public IP: ssh (keys only), the CI front doors via traefik,
|
||
# and the opencode UI on 8443 behind TLS + basic auth. fail2ban below guards the two logins.
|
||
|
||
# ---- ssh ----------------------------------------------------------------------------------
|
||
services.openssh = {
|
||
enable = true;
|
||
settings.PermitRootLogin = "yes";
|
||
};
|
||
# Root keys: PUBLIC keys, tracked deliberately in ./ssh-keys (one per line, blank lines ok).
|
||
users.users.root.openssh.authorizedKeys.keys =
|
||
builtins.filter (s: s != "") (lib.splitString "\n" (builtins.readFile ./ssh-keys));
|
||
# The loops user can also be reached directly (same keys) — handy for rsync of its workspace.
|
||
users.users.loops.openssh.authorizedKeys.keys =
|
||
builtins.filter (s: s != "") (lib.splitString "\n" (builtins.readFile ./ssh-keys));
|
||
services.openssh.settings.PasswordAuthentication = false;
|
||
services.openssh.settings.KbdInteractiveAuthentication = false;
|
||
|
||
# ---- firewall -------------------------------------------------------------------------------
|
||
# 80/443 (traefik) and 53 (acme-dns) are opened by the cc-ci-server module. 8443 is the
|
||
# opencode UI (nginx, LE cert, basic auth — see orchestrator-host.nix).
|
||
networking.firewall = {
|
||
enable = true;
|
||
allowedTCPPorts = [ 22 8443 ];
|
||
};
|
||
|
||
# ---- fail2ban: sshd (password auth is off, this stops the log noise and slow brute force) and
|
||
# the opencode UI's basic auth (nginx logs 401s to its error log; the built-in
|
||
# nginx-http-auth filter matches them).
|
||
services.fail2ban = {
|
||
enable = true;
|
||
maxretry = 5;
|
||
bantime = "1h";
|
||
bantime-increment = { enable = true; maxtime = "48h"; factor = "4"; };
|
||
ignoreIP = [ "127.0.0.0/8" "::1" ];
|
||
jails.nginx-http-auth.settings = {
|
||
enabled = true;
|
||
filter = "nginx-http-auth";
|
||
logpath = "/var/log/nginx/error.log";
|
||
backend = "auto";
|
||
port = "8443";
|
||
};
|
||
};
|
||
|
||
networking.nameservers = [ "1.1.1.1" "8.8.8.8" ];
|
||
|
||
# ---- memory: 8 GB RAM shared by the swarm (recipe deploys) and 3–6 agent sessions ---------
|
||
swapDevices = [ { device = "/swapfile"; size = 8192; } ];
|
||
|
||
# ssh client for root (the orchestrator's `ssh cc-ci` goes through the loops user's own config).
|
||
environment.systemPackages = [ pkgs.openssh ];
|
||
|
||
# Fresh NixOS 26.05 install (nixos-infect, 2026-09-07). Never change this on an existing host.
|
||
system.stateVersion = "26.05";
|
||
}
|