notplantsandClaude Fable 5.1
536d621865
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FqkQq3CDmFWcQ7u1LzoyRz
105 lines
5.3 KiB
Nix
105 lines
5.3 KiB
Nix
# cc-ci — ONE Hetzner Cloud host running both the cc-ci CI server and the cc-ci orchestrator.
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#
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# This file is only what is physical or identity about the machine: hardware, networking,
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# root SSH keys, firewall + fail2ban, swap, stateVersion. Everything functional comes from modules:
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# cc-ci.nixosModules.cc-ci-server recipe-maintainers/cc-ci — swarm, traefik, drone,
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# runner, bridge, dashboard, reports, acme-dns, harness
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# self.nixosModules.cc-ci-orchestrator nix/modules/cc-ci.nix — loops, orchestrator, timers
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# self.nixosModules.orchestrator-host nix/modules/orchestrator-host.nix — loops user, CLIs
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# See README.md for provisioning (Hetzner Debian → nixos-infect → this flake) and staging.
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{ lib, pkgs, ... }:
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{
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imports = [
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./hardware.nix
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./networking.nix
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];
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networking.hostName = "cc-ci";
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# ---- cc-ci server identity --------------------------------------------------------------
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# Public address: acme-dns binds to it and publishes it as the `ns-acme` glue record; the
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# Gandi A records for ci / *.ci / ns-acme .commoninternet.net point here.
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cc-ci.publicIPv4 = "195.201.88.249";
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# cc-ci is a plain flake input here (no private submodule), so the sops file is the one in
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# the deployed --recursive checkout the weekly sweep runs from (README "Stage the workspace").
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cc-ci.sopsFile = "/etc/cc-ci/secrets/secrets.yaml";
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# ---- orchestrator identity --------------------------------------------------------------
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# The CI server is this very host, so `ssh cc-ci` goes to loopback (the module default).
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cc-ci-orchestrator.ciSshHost = "127.0.0.1";
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# The opencode UI: traefik (public 443, the *.ci.commoninternet.net cert) → nginx basic auth.
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cc-ci-orchestrator.opencodeUiHost = "oc.ci.commoninternet.net";
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cc-ci-orchestrator.opencodeUiTraefikNetwork = "proxy";
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# ---- no tailscale on this host (operator 2026-09-07) --------------------------------------
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# Everything is reached over the public IP: ssh (keys only), the CI front doors via traefik,
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# and the opencode UI on 443 (traefik → nginx basic auth). fail2ban below guards the two logins.
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# ---- ssh ----------------------------------------------------------------------------------
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services.openssh = {
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enable = true;
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settings.PermitRootLogin = "yes";
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};
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# Root keys: PUBLIC keys, tracked deliberately in ./ssh-keys (one per line, blank lines ok).
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users.users.root.openssh.authorizedKeys.keys =
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builtins.filter (s: s != "") (lib.splitString "\n" (builtins.readFile ./ssh-keys));
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# The loops user can also be reached directly (same keys) — handy for rsync of its workspace.
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users.users.loops.openssh.authorizedKeys.keys =
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builtins.filter (s: s != "") (lib.splitString "\n" (builtins.readFile ./ssh-keys));
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services.openssh.settings.PasswordAuthentication = false;
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services.openssh.settings.KbdInteractiveAuthentication = false;
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# ---- firewall -------------------------------------------------------------------------------
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# 80/443 (traefik) and 53 (acme-dns) are opened by the cc-ci-server module; the opencode UI
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# rides 443 through traefik (orchestrator-host.nix), so only ssh is opened here.
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networking.firewall = {
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enable = true;
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allowedTCPPorts = [ 22 ];
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};
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# ---- fail2ban: sshd (password auth is off, this stops the log noise and slow brute force) and
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# the opencode UI's basic auth (nginx logs 401s with the real client IP to the journal; the
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# built-in nginx-http-auth filter matches them). Those clients arrive through traefik's
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# docker-published 443, which iptables FORWARDs rather than INPUTs, so the ban for that jail
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# goes into the DOCKER-USER chain — an INPUT rule would never see the traffic.
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services.fail2ban = {
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enable = true;
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maxretry = 5;
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bantime = "1h";
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bantime-increment = { enable = true; maxtime = "48h"; factor = "4"; };
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ignoreIP = [ "127.0.0.0/8" "::1" ];
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jails.nginx-http-auth.settings = {
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enabled = true;
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filter = "nginx-http-auth";
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# NixOS nginx logs errors to stderr → the journal, not /var/log/nginx/error.log (which
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# exists but stays empty). Read the unit's journal instead.
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backend = "systemd";
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journalmatch = "_SYSTEMD_UNIT=nginx.service";
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banaction = "iptables-allports";
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chain = "DOCKER-USER";
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};
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};
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networking.nameservers = [ "1.1.1.1" "8.8.8.8" ];
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# This host's own public names resolve to itself regardless of external DNS state (host
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# processes: the drone runner, the harness, the orchestrator; containers use the resolvers
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# above). Per-run recipe domains are random and cannot be pinned — those follow public DNS.
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networking.hosts."195.201.88.249" = [
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"ci.commoninternet.net"
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"drone.ci.commoninternet.net"
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"report.ci.commoninternet.net"
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"traefik.ci.commoninternet.net"
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"warm-keycloak.ci.commoninternet.net"
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"oc.ci.commoninternet.net"
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];
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# ---- memory: 8 GB RAM shared by the swarm (recipe deploys) and 3–6 agent sessions ---------
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swapDevices = [ { device = "/swapfile"; size = 8192; } ];
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# ssh client for root (the orchestrator's `ssh cc-ci` goes through the loops user's own config).
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environment.systemPackages = [ pkgs.openssh ];
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# Fresh NixOS 26.05 install (nixos-infect, 2026-09-07). Never change this on an existing host.
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system.stateVersion = "26.05";
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}
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