{ depot, lib, pkgs, ... }: # readTree options { config, ... }: # passed by module system let inherit (builtins) listToAttrs; inherit (lib) range; mod = name: depot.path.origSrc + ("/ops/modules/" + name); in { imports = [ (mod "atward.nix") (mod "cgit.nix") (mod "clbot.nix") (mod "gerrit-autosubmit.nix") (mod "irccat.nix") (mod "josh.nix") (mod "journaldriver.nix") (mod "known-hosts.nix") (mod "monorepo-gerrit.nix") (mod "owothia.nix") (mod "panettone.nix") (mod "paroxysm.nix") (mod "restic.nix") (mod "smtprelay.nix") (mod "sourcegraph.nix") (mod "tvl-buildkite.nix") (mod "tvl-slapd/default.nix") (mod "tvl-users.nix") (mod "www/atward.tvl.fyi.nix") (mod "www/auth.tvl.fyi.nix") (mod "www/b.tvl.fyi.nix") (mod "www/cache.tvl.su.nix") (mod "www/cl.tvl.fyi.nix") (mod "www/code.tvl.fyi.nix") (mod "www/cs.tvl.fyi.nix") (mod "www/deploys.tvl.fyi.nix") (mod "www/self-redirect.nix") (mod "www/signup.tvl.fyi.nix") (mod "www/static.tvl.fyi.nix") (mod "www/status.tvl.su.nix") (mod "www/todo.tvl.fyi.nix") (mod "www/tvix.dev.nix") (mod "www/tvixbolt.tvl.su.nix") (mod "www/tvl.fyi.nix") (mod "www/tvl.su.nix") (mod "www/wigglydonke.rs.nix") # experimental! (mod "www/grep.tvl.fyi.nix") (depot.third_party.agenix.src + "/modules/age.nix") ]; hardware = { enableRedistributableFirmware = true; cpu.amd.updateMicrocode = true; }; boot = { tmp.useTmpfs = true; kernelModules = [ "kvm-amd" ]; supportedFilesystems = [ "zfs" ]; initrd = { availableKernelModules = [ "igb" "xhci_pci" "nvme" "ahci" "usbhid" "usb_storage" "sr_mod" ]; # Enable SSH in the initrd so that we can enter disk encryption # passwords remotely. network = { enable = true; ssh = { enable = true; port = 2222; authorizedKeys = depot.users.tazjin.keys.all ++ depot.users.lukegb.keys.all ++ [ depot.users.aspen.keys.whitby ]; hostKeys = [ /etc/secrets/initrd_host_ed25519_key ]; }; # this will launch the zfs password prompt on login and kill the # other prompt postCommands = '' echo "zfs load-key -a && killall zfs" >> /root/.profile ''; }; }; kernel.sysctl = { "net.ipv4.tcp_congestion_control" = "bbr"; }; loader.grub = { enable = true; efiSupport = true; efiInstallAsRemovable = true; device = "/dev/disk/by-id/nvme-SAMSUNG_MZQLB1T9HAJR-00007_S439NA0N201620"; }; zfs.requestEncryptionCredentials = true; }; fileSystems = { "/" = { device = "zroot/root"; fsType = "zfs"; }; "/boot" = { device = "/dev/disk/by-uuid/073E-7FBD"; fsType = "vfat"; }; "/nix" = { device = "zroot/nix"; fsType = "zfs"; }; "/home" = { device = "zroot/home"; fsType = "zfs"; }; }; networking = { # Glass is boring, but Luke doesn't like Wapping - the Prospect of # Whitby, however, is quite a pleasant establishment. hostName = "whitby"; domain = "tvl.fyi"; hostId = "b38ca543"; useDHCP = false; # Don't use Hetzner's DNS servers. nameservers = [ "8.8.8.8" "8.8.4.4" ]; defaultGateway6 = { address = "fe80::1"; interface = "enp196s0"; }; firewall.allowedTCPPorts = [ 22 80 443 4238 8443 29418 ]; firewall.allowedUDPPorts = [ 8443 ]; interfaces.enp196s0.useDHCP = true; interfaces.enp196s0.ipv6.addresses = [ { address = "2a01:04f8:0242:5b21::feed:edef:beef"; prefixLength = 64; } ]; }; # Generate an immutable /etc/resolv.conf from the nameserver settings # above (otherwise DHCP overwrites it): environment.etc."resolv.conf" = with lib; { source = pkgs.writeText "resolv.conf" '' ${concatStringsSep "\n" (map (ns: "nameserver ${ns}") config.networking.nameservers)} options edns0 ''; }; # Disable background git gc system-wide, as it has a tendency to break CI. environment.etc."gitconfig".source = pkgs.writeText "gitconfig" '' [gc] autoDetach = false ''; time.timeZone = "UTC"; nix = { nrBuildUsers = 256; settings = { max-jobs = lib.mkDefault 64; secret-key-files = "/run/agenix/nix-cache-priv"; trusted-users = [ "aspen" "lukegb" "tazjin" "sterni" ]; }; sshServe = { enable = true; keys = with depot.users; tazjin.keys.all ++ lukegb.keys.all ++ [ aspen.keys.whitby ] ++ sterni.keys.all ; }; }; programs.mtr.enable = true; programs.mosh.enable = true; services.openssh = { enable = true; settings = { PasswordAuthentication = false; KbdInteractiveAuthentication = false; }; }; # Configure secrets for services that need them. age.secrets = let secretFile = name: depot.ops.secrets."${name}.age"; in { clbot.file = secretFile "clbot"; gerrit-autosubmit.file = secretFile "gerrit-autosubmit"; grafana.file = secretFile "grafana"; irccat.file = secretFile "irccat"; keycloak-db.file = secretFile "keycloak-db"; nix-cache-priv.file = secretFile "nix-cache-priv"; owothia.file = secretFile "owothia"; panettone.file = secretFile "panettone"; smtprelay.file = secretFile "smtprelay"; buildkite-agent-token = { file = secretFile "buildkite-agent-token"; mode = "0440"; group = "buildkite-agents"; }; buildkite-graphql-token = { file = secretFile "buildkite-graphql-token"; mode = "0440"; group = "buildkite-agents"; }; buildkite-besadii-config = { file = secretFile "besadii"; mode = "0440"; group = "buildkite-agents"; }; buildkite-private-key = { file = secretFile "buildkite-ssh-private-key"; mode = "0440"; group = "buildkite-agents"; }; gerrit-besadii-config = { file = secretFile "besadii"; owner = "git"; }; gerrit-secrets = { file = secretFile "gerrit-secrets"; path = "/var/lib/gerrit/etc/secure.config"; owner = "git"; mode = "0400"; }; clbot-ssh = { file = secretFile "clbot-ssh"; owner = "clbot"; }; # Not actually a secret nix-cache-pub = { file = secretFile "nix-cache-pub"; mode = "0444"; }; depot-replica-key = { file = secretFile "depot-replica-key"; mode = "0500"; owner = "git"; group = "git"; path = "/var/lib/git/.ssh/id_ed25519"; }; }; # Automatically collect garbage from the Nix store. services.depot.automatic-gc = { enable = true; interval = "1 hour"; diskThreshold = 200; # GiB maxFreed = 420; # GiB preserveGenerations = "90d"; }; # Run a handful of Buildkite agents to support parallel builds. services.depot.buildkite = { enable = true; agentCount = 32; }; # Start a local SMTP relay to Gmail (used by gerrit) services.depot.smtprelay = { enable = true; args = { listen = ":2525"; remote_host = "smtp.gmail.com:587"; remote_auth = "plain"; remote_user = "tvlbot@tazj.in"; }; }; # Start a ZNC instance which bounces for tvlbot and owothia. services.znc = { enable = true; useLegacyConfig = false; config = { LoadModule = [ "webadmin" "adminlog" ]; User.admin = { Admin = true; Pass.password = { Method = "sha256"; Hash = "bb00aa8239de484c2925b1c3f6a196fb7612633f001daa9b674f83abe7e1103f"; Salt = "TiB0Ochb1CrtpMTl;2;j"; }; }; Listener.l = { Host = "localhost"; Port = 2627; # bncr SSL = false; }; }; }; # Start the Gerrit->IRC bot services.depot.clbot = { enable = true; channels = [ "#tvl" ]; # See //fun/clbot for details. flags = { gerrit_host = "cl.tvl.fyi:29418"; gerrit_ssh_auth_username = "clbot"; gerrit_ssh_auth_key = config.age.secretsDir + "/clbot-ssh"; irc_server = "localhost:${toString config.services.znc.config.Listener.l.Port}"; irc_user = "tvlbot"; irc_nick = "tvlbot"; notify_branches = "canon,refs/meta/config"; notify_repo = "depot"; # This secret is read from an environment variable, which is # populated by a systemd EnvironmentFile. irc_pass = "$CLBOT_PASS"; }; }; services.depot = { # Run a SourceGraph code search instance sourcegraph.enable = true; # Run the Panettone issue tracker panettone = { enable = true; dbUser = "panettone"; dbName = "panettone"; irccatChannel = "#tvl"; }; # Run the first cursed bot (quote bot) paroxysm.enable = true; # Run the second cursed bot owothia = { enable = true; ircServer = "localhost"; ircPort = config.services.znc.config.Listener.l.Port; }; # Run irccat to forward messages to IRC irccat = { enable = true; config = { tcp.listen = ":4722"; # "ircc" irc = { server = "localhost:${toString config.services.znc.config.Listener.l.Port}"; tls = false; nick = "tvlbot"; # Note: irccat means 'ident' where it says 'realname', so # this is critical for connecting to ZNC. realname = "tvlbot"; channels = [ "#tvl" ]; }; }; }; # Run atward, the search engine redirection thing. atward.enable = true; # Run cgit & josh to serve git cgit = { enable = true; user = "git"; # run as the same user as gerrit }; josh.enable = true; # Configure backups to GleSYS restic = { enable = true; paths = [ "/var/backup/postgresql" "/var/lib/grafana" "/var/lib/znc" ]; }; # Run autosubmit bot for Gerrit gerrit-autosubmit.enable = true; }; services.postgresql = { enable = true; enableTCPIP = true; package = pkgs.postgresql_16; authentication = lib.mkForce '' local all all trust host all all 127.0.0.1/32 password host all all ::1/128 password hostnossl all all 127.0.0.1/32 password hostnossl all all ::1/128 password ''; ensureDatabases = [ "panettone" ]; ensureUsers = [{ name = "panettone"; ensurePermissions = { "DATABASE panettone" = "ALL PRIVILEGES"; }; }]; }; services.postgresqlBackup = { enable = true; databases = [ "keycloak" "panettone" "tvldb" ]; }; services.nix-serve = { enable = true; port = 6443; secretKeyFile = config.age.secretsDir + "/nix-cache-priv"; bindAddress = "localhost"; }; services.fail2ban.enable = true; environment.systemPackages = (with pkgs; [ bat bb curl direnv emacs-nox fd git htop hyperfine jq nano nvd ripgrep tree unzip vim zfs zfstools ]) ++ (with depot; [ ops.deploy-whitby ]); # Required for prometheus to be able to scrape stats services.nginx.statusPage = true; # Configure Prometheus & Grafana. Exporter configuration for # Prometheus is inside the respective service modules. services.prometheus = { enable = true; retentionTime = "90d"; exporters = { node = { enable = true; enabledCollectors = [ "logind" "processes" "systemd" ]; }; nginx = { enable = true; sslVerify = false; constLabels = [ "host=whitby" ]; }; }; scrapeConfigs = [{ job_name = "node"; scrape_interval = "5s"; static_configs = [{ targets = [ "localhost:${toString config.services.prometheus.exporters.node.port}" ]; }]; } { job_name = "nginx"; scrape_interval = "5s"; static_configs = [{ targets = [ "localhost:${toString config.services.prometheus.exporters.nginx.port}" ]; }]; }]; }; services.grafana = { enable = true; settings = { server = { http_port = 4723; # "graf" on phone keyboard domain = "status.tvl.su"; root_url = "https://status.tvl.su"; }; analytics.reporting_enabled = false; "auth.generic_oauth" = { enabled = true; client_id = "grafana"; scopes = "openid profile email"; name = "TVL"; email_attribute_path = "mail"; login_attribute_path = "sub"; name_attribute_path = "displayName"; auth_url = "https://auth.tvl.fyi/auth/realms/TVL/protocol/openid-connect/auth"; token_url = "https://auth.tvl.fyi/auth/realms/TVL/protocol/openid-connect/token"; api_url = "https://auth.tvl.fyi/auth/realms/TVL/protocol/openid-connect/userinfo"; # Give lukegb, aspen, tazjin "Admin" rights. role_attribute_path = "((sub == 'lukegb' || sub == 'aspen' || sub == 'tazjin') && 'Admin') || 'Editor'"; # Allow creating new Grafana accounts from OAuth accounts. allow_sign_up = true; }; "auth.anonymous" = { enabled = true; org_name = "The Virus Lounge"; org_role = "Viewer"; }; "auth.basic".enabled = false; auth = { oauth_auto_login = true; disable_login_form = true; }; }; provision = { enable = true; datasources.settings.datasources = [{ name = "Prometheus"; type = "prometheus"; url = "http://localhost:9090"; }]; }; }; # Contains GF_AUTH_GENERIC_OAUTH_CLIENT_SECRET. systemd.services.grafana.serviceConfig.EnvironmentFile = config.age.secretsDir + "/grafana"; services.keycloak = { enable = true; settings = { http-port = 5925; # kycl hostname = "auth.tvl.fyi"; http-relative-path = "/auth"; proxy = "edge"; }; database = { type = "postgresql"; passwordFile = config.age.secretsDir + "/keycloak-db"; createLocally = false; }; }; # Join TVL Tailscale network at net.tvl.fyi services.tailscale = { enable = true; useRoutingFeatures = "server"; # for exit-node usage }; # Allow Keycloak access to the LDAP module by forcing in the JVM # configuration systemd.services.keycloak.environment.PREPEND_JAVA_OPTS = "--add-exports=java.naming/com.sun.jndi.ldap=ALL-UNNAMED"; security.sudo.extraRules = [ { groups = [ "wheel" ]; commands = [{ command = "ALL"; options = [ "NOPASSWD" ]; }]; } ]; users = { # Set up a user & group for git shenanigans groups.git = { }; users.git = { group = "git"; isSystemUser = true; createHome = true; home = "/var/lib/git"; }; }; zramSwap.enable = true; system.stateVersion = "20.03"; }