diff options
Diffstat (limited to 'users/tazjin/nixos/camden')
-rw-r--r-- | users/tazjin/nixos/camden/default.nix | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/users/tazjin/nixos/camden/default.nix b/users/tazjin/nixos/camden/default.nix new file mode 100644 index 000000000000..ebd4caac75c7 --- /dev/null +++ b/users/tazjin/nixos/camden/default.nix @@ -0,0 +1,351 @@ +# This file configures camden.tazj.in, my homeserver. +{ depot, pkgs, lib, ... }: + +config: let + nginxRedirect = { from, to, acmeHost }: { + serverName = from; + useACMEHost = acmeHost; + forceSSL = true; + + extraConfig = "return 301 https://${to}$request_uri;"; + }; +in lib.fix(self: { + # Disable the current ACME module and use the old one from 19.09 + # instead, until the various regressions have been sorted out. + # TODO(tazjin): Remove this once the new ACME module works. + disabledModules = [ "security/acme.nix" ]; + imports = + let oldChannel = fetchTarball { + # NixOS 19.09 on 2020-10-04 + url = "https://github.com/NixOS/nixpkgs-channels/archive/75f4ba05c63be3f147bcc2f7bd4ba1f029cedcb1.tar.gz"; + sha256 = "157c64220lf825ll4c0cxsdwg7cxqdx4z559fdp7kpz0g6p8fhhr"; + }; + in [ + "${depot.path}/ops/modules/quassel.nix" + "${depot.path}/ops/modules/smtprelay.nix" + "${oldChannel}/nixos/modules/security/acme.nix" + ]; + + # camden is intended to boot unattended, despite having an encrypted + # root partition. + # + # The below configuration uses an externally connected USB drive + # that contains a LUKS key file to unlock the disk automatically at + # boot. + # + # TODO(tazjin): Configure LUKS unlocking via SSH instead. + boot = { + initrd = { + availableKernelModules = [ + "ahci" "xhci_pci" "usbhid" "usb_storage" "sd_mod" "sdhci_pci" + "rtsx_usb_sdmmc" "r8169" + ]; + + kernelModules = [ "dm-snapshot" ]; + + luks.devices.camden-crypt = { + fallbackToPassword = true; + device = "/dev/disk/by-label/camden-crypt"; + keyFile = "/dev/sdb"; + keyFileSize = 4096; + }; + }; + + loader = { + systemd-boot.enable = true; + efi.canTouchEfiVariables = true; + }; + + cleanTmpDir = true; + }; + + fileSystems = { + "/" = { + device = "/dev/disk/by-label/camden-root"; + fsType = "ext4"; + }; + + "/home" = { + device = "/dev/disk/by-label/camden-home"; + fsType = "ext4"; + }; + + "/boot" = { + device = "/dev/disk/by-label/BOOT"; + fsType = "vfat"; + }; + }; + + nix = { + maxJobs = lib.mkDefault 4; + + trustedUsers = [ "root" "tazjin" ]; + + binaryCaches = [ + "https://tazjin.cachix.org" + ]; + + binaryCachePublicKeys = [ + "tazjin.cachix.org-1:IZkgLeqfOr1kAZjypItHMg1NoBjm4zX9Zzep8oRSh7U=" + ]; + }; + + powerManagement.cpuFreqGovernor = lib.mkDefault "powersave"; + + networking = { + hostName = "camden"; + interfaces.enp1s0.useDHCP = true; + interfaces.enp1s0.ipv6.addresses = [ + { + address = "2a01:4b00:821a:ce02::5"; + prefixLength = 64; + } + ]; + + firewall.enable = false; + }; + + time.timeZone = "UTC"; + + # System-wide application setup + programs.fish.enable = true; + programs.mosh.enable = true; + + fonts = { + fonts = [ pkgs.jetbrains-mono ]; + fontconfig.defaultFonts.monospace = [ "JetBrains Mono" ]; + }; + + environment.systemPackages = + # programs from the depot + (with depot; [ + fun.idual.script + fun.idual.setAlarm + ]) ++ + + # programs from nixpkgs + (with pkgs; [ + bat + curl + direnv + emacs27-nox + fswebcam + git + gnupg + google-cloud-sdk + htop + jq + pass + pciutils + restic + ripgrep + screen + ]); + + users = { + # Set up my own user for logging in and doing things ... + users.tazjin = { + isNormalUser = true; + uid = 1000; + extraGroups = [ "git" "wheel" "quassel" "video" ]; + shell = pkgs.fish; + }; + + # Set up a user & group for general git shenanigans + groups.git = {}; + users.git = { + group = "git"; + isSystemUser = true; + }; + }; + + # Services setup + services.openssh.enable = true; + services.haveged.enable = true; + + # Join Tailscale into home network + services.tailscale.enable = true; + + # Allow sudo-ing via the forwarded SSH agent. + security.pam.enableSSHAgentAuth = true; + + # NixOS 20.03 broke nginx and I can't be bothered to debug it + # anymore, all solution attempts have failed, so here's a + # brute-force fix. + systemd.services.fix-nginx = { + script = "${pkgs.coreutils}/bin/chown -R nginx: /var/spool/nginx /var/cache/nginx"; + + serviceConfig = { + User = "root"; + Type = "oneshot"; + }; + }; + + systemd.timers.fix-nginx = { + wantedBy = [ "multi-user.target" ]; + timerConfig = { + OnCalendar = "minutely"; + }; + }; + + # Provision a TLS certificate outside of nginx to avoid + # nixpkgs#38144 + security.acme = { + # acceptTerms = true; + + certs."tazj.in" = { + email = "mail@tazj.in"; + user = "nginx"; + group = "nginx"; + webroot = "/var/lib/acme/acme-challenge"; + extraDomains = { + "cs.tazj.in" = null; + "git.tazj.in" = null; + "www.tazj.in" = null; + + # Local domains (for this machine only) + "camden.tazj.in" = null; + }; + postRun = "systemctl reload nginx"; + }; + + certs."quassel.tazj.in" = { + email = "mail@tazj.in"; + webroot = "/var/lib/acme/challenge-quassel"; + user = "nginx"; # required because of a bug in the ACME module + group = "quassel"; + allowKeysForGroup = true; + }; + }; + + # Forward logs to Google Cloud Platform + services.journaldriver = { + enable = true; + logStream = "home"; + googleCloudProject = "tazjins-infrastructure"; + applicationCredentials = "/etc/gcp/key.json"; + }; + + services.depot.quassel = { + enable = true; + acmeHost = "quassel.tazj.in"; + bindAddresses = [ + "0.0.0.0" + ]; + }; + + services.bitlbee = { + enable = false; + portNumber = 2337; # bees + }; + + # serve my website(s) + services.nginx = { + enable = true; + enableReload = true; + package = with pkgs; nginx.override { + modules = [ nginxModules.rtmp ]; + }; + + recommendedTlsSettings = true; + recommendedGzipSettings = true; + recommendedProxySettings = true; + + appendConfig = '' + rtmp_auto_push on; + rtmp { + server { + listen 1935; + chunk_size 4000; + + application tvl { + live on; + + allow publish 88.98.195.213; + allow publish 10.0.1.0/24; + deny publish all; + + allow play all; + } + } + } + ''; + + commonHttpConfig = '' + log_format json_combined escape=json + '{' + '"remote_addr":"$remote_addr",' + '"method":"$request_method",' + '"uri":"$request_uri",' + '"status":$status,' + '"request_size":$request_length,' + '"response_size":$body_bytes_sent,' + '"response_time":$request_time,' + '"referrer":"$http_referer",' + '"user_agent":"$http_user_agent"' + '}'; + + access_log syslog:server=unix:/dev/log,nohostname json_combined; + ''; + + virtualHosts.homepage = { + serverName = "tazj.in"; + serverAliases = [ "camden.tazj.in" ]; + default = true; + useACMEHost = "tazj.in"; + root = depot.users.tazjin.homepage; + forceSSL = true; + + extraConfig = '' + ${depot.users.tazjin.blog.oldRedirects} + + add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always; + + location ~* \.(webp|woff2)$ { + add_header Cache-Control "public, max-age=31536000"; + } + + location /blog/ { + alias ${depot.users.tazjin.blog.rendered}/; + + if ($request_uri ~ ^/(.*)\.html$) { + return 302 /$1; + } + + try_files $uri $uri.html $uri/ =404; + } + + location = /tazjin { + return 200 "tazjin"; + } + + location /blobs/ { + alias /var/www/blobs/; + } + ''; + }; + + virtualHosts.cgit-old = nginxRedirect { + from = "git.tazj.in"; + to = "code.tvl.fyi"; + acmeHost = "tazj.in"; + }; + + virtualHosts.cs-old = nginxRedirect { + from = "cs.tazj.in"; + to = "cs.tvl.fyi"; + acmeHost = "tazj.in"; + }; + }; + + # Timer units that can be started with systemd-run to set my alarm. + systemd.user.services.light-alarm = { + script = "${depot.fun.idual.script}/bin/idualctl wakey"; + postStart = "${pkgs.systemd}/bin/systemctl --user stop light-alarm.timer"; + serviceConfig = { + Type = "oneshot"; + }; + }; + + system.stateVersion = "19.09"; +}) |