Move Synapse on hcloud and deploy it with Terraform + NixOs

.envrc

@@ -0,0 +1,2 @@
+use flake
+export SOPS_PGP_FP="3AC6F170F01133CE393BCD94BE948AFD7E7873BE"

.gitignore

@@ -8,3 +8,4 @@ terraform.tfstate.backup
 .environment
 .tmp
 terraform.tfvars
+.direnv

backend1.nix

@@ -0,0 +1,115 @@
+{ modulesPath, pkgs, lib, config, ... }:
+let
+  fqdn =
+    let
+      join = hostName: domain: hostName + lib.optionalString (domain != null) ".${domain}";
+    in join "matrix" config.networking.domain;
+in {
+  imports = [ (modulesPath + "/profiles/qemu-guest.nix") ];
+
+  boot.loader.grub.device = "/dev/sda";
+  fileSystems."/" = { device = "/dev/sda1"; fsType = "ext4"; };
+
+  # Set NIX_PATH to be the same as the Terraform module
+  # nix.nixPath = [ "nixpkgs=${pkgs}" ];
+
+  boot.cleanTmpDir = true;
+
+  networking.hostName = "backend1";
+  networking.domain = "banditlair.com";
+  networking.firewall.allowPing = true;
+  networking.firewall.allowedTCPPorts = [ 80 443 ];
+
+  services.openssh.enable = true;
+  users.users.root.openssh.authorizedKeys.keyFiles = [
+     ./ssh_keys/phfroidmont-desktop.pub
+  ];
+
+  security.acme.email = "letsencrypt.account@banditlair.com";
+  security.acme.acceptTerms = true;
+
+  services.nginx = {
+    enable = true;
+    # only recommendedProxySettings and recommendedGzipSettings are strictly required,
+    # but the rest make sense as well
+    recommendedTlsSettings = true;
+    recommendedOptimisation = true;
+    recommendedGzipSettings = true;
+    recommendedProxySettings = true;
+
+    virtualHosts = {
+      # This host section can be placed on a different host than the rest,
+      # i.e. to delegate from the host being accessible as ${config.networking.domain}
+      # to another host actually running the Matrix homeserver.
+      "${config.networking.domain}" = {
+        enableACME = true;
+        forceSSL = true;
+
+        locations."= /.well-known/matrix/server".extraConfig =
+          let
+            # use 443 instead of the default 8448 port to unite
+            # the client-server and server-server port for simplicity
+            server = { "m.server" = "${fqdn}:443"; };
+          in ''
+            add_header Content-Type application/json;
+            return 200 '${builtins.toJSON server}';
+          '';
+        locations."= /.well-known/matrix/client".extraConfig =
+          let
+            client = {
+              "m.homeserver" =  { "base_url" = "https://${fqdn}"; };
+              "m.identity_server" =  { "base_url" = "https://vector.im"; };
+            };
+          # ACAO required to allow element-web on any URL to request this json file
+          in ''
+            add_header Content-Type application/json;
+            add_header Access-Control-Allow-Origin *;
+            return 200 '${builtins.toJSON client}';
+          '';
+      };
+
+      # Reverse proxy for Matrix client-server and server-server communication
+      ${fqdn} = {
+        enableACME = true;
+        forceSSL = true;
+
+        # Or do a redirect instead of the 404, or whatever is appropriate for you.
+        # But do not put a Matrix Web client here! See the Element web section below.
+        locations."/".extraConfig = ''
+          return 404;
+        '';
+
+        # forward all Matrix API calls to the synapse Matrix homeserver
+        locations."/_matrix" = {
+          proxyPass = "http://[::1]:8008"; # without a trailing /
+        };
+      };
+    };
+  };
+
+  services.matrix-synapse = {
+    enable = true;
+    server_name = config.networking.domain;
+    listeners = [
+      {
+        port = 8008;
+        bind_address = "::1";
+        type = "http";
+        tls = false;
+        x_forwarded = true;
+        resources = [
+          {
+            names = [ "client" "federation" ];
+            compress = false;
+          }
+        ];
+      }
+    ];
+    database_type = "psycopg2";
+    database_args = {
+      host = "fake"; # This section is overriden in deploy_nixos keys
+    };
+    extraConfigFiles = [ "/var/keys/synapse-extra-config.yaml" ];
+  };
+  users.users.matrix-synapse.extraGroups = [ "keys" ];
+}

config.tf

@@ -2,28 +2,33 @@ terraform {
   backend "http" {
   }
   required_providers {
-//    hcloud = {
-//      source = "hetznercloud/hcloud"
-//      version = "1.24.1"
-//    }
+    hcloud = {
+      source = "hetznercloud/hcloud"
+      version = "1.24.1"
+    }
 
     hetznerdns = {
       source  = "timohirt/hetznerdns"
       version = ">= 1.1.1"
     }
+
+    sops = {
+      source = "carlpett/sops"
+      version = "~> 0.5"
+    }
   }
 }
 
-//variable "hcloud_token" {}
-//
-//provider "hcloud" {
-//  token = var.hcloud_token
-//}
-//
-//resource "hcloud_ssh_key" "phfroidmont-desktop" {
-//  name = "phfroidmont-desktop"
-//  public_key = file("ssh_keys/phfroidmont-desktop.pub")
-//}
+variable "hcloud_token" {}
+
+provider "hcloud" {
+  token = var.hcloud_token
+}
+
+resource "hcloud_ssh_key" "phfroidmont-desktop" {
+  name = "phfroidmont-desktop"
+  public_key = file("ssh_keys/phfroidmont-desktop.pub")
+}
 
 variable "hetznerdns_token" {}
 

db1.nix

@@ -0,0 +1,34 @@
+{ modulesPath, pkgs, ... }:
+{
+  imports = [ (modulesPath + "/profiles/qemu-guest.nix") ];
+
+  boot.loader.grub.device = "/dev/sda";
+  fileSystems."/" = { device = "/dev/sda1"; fsType = "ext4"; };
+
+  # Set NIX_PATH to be the same as the Terraform module
+  # nix.nixPath = [ "nixpkgs=${pkgs}" ];
+
+  environment.systemPackages = with pkgs; [
+    htop
+  ];
+  boot.cleanTmpDir = true;
+  networking.hostName = "db1";
+  networking.domain = "banditlair.com";
+  networking.firewall.allowPing = true;
+  networking.firewall.interfaces."enp7s0".allowedTCPPorts = [ 5432 ];
+  services.openssh.enable = true;
+  users.users.root.openssh.authorizedKeys.keyFiles = [
+     ./ssh_keys/phfroidmont-desktop.pub
+  ];
+
+  services.postgresql = {
+    enable = true;
+    package = pkgs.postgresql_12;
+    initialScript = "/var/keys/postgres-init.sql";
+    enableTCPIP = true;
+    authentication = ''
+      host all all 10.0.1.0/24 md5
+    '';
+  };
+  users.users.postgres.extraGroups = [ "keys" ];
+}

dns.tf

@@ -7,35 +7,27 @@ data "hetznerdns_zone" "banditlair_zone" {
   name = "banditlair.com"
 }
 
-resource "hetznerdns_record" "banditlair_a" {
+resource "hetznerdns_record" "banditlair_hcloud_a" {
   zone_id = data.hetznerdns_zone.banditlair_zone.id
   name = "@"
-  value = "144.76.18.197"
+  value = data.hcloud_floating_ip.main_ip.ip_address
   type = "A"
   ttl = 600
 }
 
-resource "hetznerdns_record" "banditlair_cname" {
+resource "hetznerdns_record" "banditlair_dedicated_a" {
   zone_id = data.hetznerdns_zone.banditlair_zone.id
   name = "*"
-  value = "${data.hetznerdns_zone.banditlair_zone.name}."
-  type = "CNAME"
+  value = "144.76.18.197"
+  type = "A"
   ttl = 600
 }
 
-resource "hetznerdns_record" "ddns_ns" {
-  zone_id = data.hetznerdns_zone.banditlair_zone.id
-  name = "ddns.banditlair.com."
-  value = "ns.banditlair.com."
-  type = "NS"
-  ttl = 3600
-}
-
 # Matrix
 resource "hetznerdns_record" "matrix_a" {
   zone_id = data.hetznerdns_zone.banditlair_zone.id
   name = "matrix"
-  value = hetznerdns_record.banditlair_a.value
+  value = data.hcloud_floating_ip.main_ip.ip_address
   type = "A"
   ttl = 600
 }
@@ -112,7 +104,7 @@ data "hetznerdns_zone" "falbo_zone" {
 resource "hetznerdns_record" "falbo_a" {
   zone_id = data.hetznerdns_zone.falbo_zone.id
   name = "@"
-  value = hetznerdns_record.banditlair_a.value
+  value = hetznerdns_record.banditlair_dedicated_a.value
   type = "A"
   ttl = 600
 }
@@ -172,7 +164,7 @@ data "hetznerdns_zone" "froidmont_zone" {
 resource "hetznerdns_record" "froidmont_a" {
   zone_id = data.hetznerdns_zone.froidmont_zone.id
   name = "@"
-  value = hetznerdns_record.banditlair_a.value
+  value = hetznerdns_record.banditlair_dedicated_a.value
   type = "A"
   ttl = 600
 }
@@ -232,7 +224,7 @@ data "hetznerdns_zone" "stb_zone" {
 resource "hetznerdns_record" "stb_a" {
   zone_id = data.hetznerdns_zone.stb_zone.id
   name = "@"
-  value = hetznerdns_record.banditlair_a.value
+  value = hetznerdns_record.banditlair_dedicated_a.value
   type = "A"
   ttl = 600
 }

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1626117186,
+        "narHash": "sha256-KSVWpb03y2QootRxAG4RwTI14RUn1vmz/yRgVlDJRpk=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "a7512bb64b1dd693c97b1219c24032d28f20f9e8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-21.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,27 @@
+{
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-21.05";
+
+  outputs = { self, nixpkgs }:
+    let
+      pkgs = nixpkgs.legacyPackages.x86_64-linux;
+
+      inputs = with pkgs; [
+        terraform_0_14
+        sops
+      ];
+    in {
+      devShell.x86_64-linux = pkgs.mkShell {
+        buildInputs = inputs;
+      };
+
+      nixosConfigurations.db1 = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [ { imports = [ ./db1.nix ]; } ];
+      };
+
+      nixosConfigurations.backend1 = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [ { imports = [ ./backend1.nix ]; } ];
+      };
+    };
+}

instances.tf

@@ -0,0 +1,114 @@
+data "hcloud_image" "nixos_stable" {
+  with_selector = "nixos=21.05"
+}
+
+data "hcloud_floating_ip" "main_ip" {
+  with_selector = "external=main"
+}
+
+data "sops_file" "secrets" {
+  source_file = "secrets.enc.yml"
+}
+
+resource "hcloud_network" "private_network" {
+  name = "private"
+  ip_range = "10.0.0.0/16"
+}
+
+resource "hcloud_network_subnet" "db_network_subnet" {
+  type = "cloud"
+  network_id = hcloud_network.private_network.id
+  network_zone = "eu-central"
+  ip_range = "10.0.1.0/24"
+}
+
+resource "hcloud_server" "db1" {
+  name = "db1"
+  image = data.hcloud_image.nixos_stable.id
+  server_type = "cpx11"
+  ssh_keys = [
+    hcloud_ssh_key.phfroidmont-desktop.id
+  ]
+  keep_disk = true
+  location = "hel1"
+
+  network {
+    network_id = hcloud_network.private_network.id
+    ip = "10.0.1.11"
+  }
+
+  labels = {
+    type = "db"
+  }
+
+  depends_on = [
+    hcloud_network_subnet.db_network_subnet
+  ]
+}
+
+module "deploy_nixos_db1" {
+  source = "github.com/phfroidmont/terraform-nixos//deploy_nixos?ref=a8d5d31e59f4ce2677272e4849b122b4afc5a8e4"
+  nixos_config = "db1"
+  flake = true
+  target_host = hcloud_server.db1.ipv4_address
+  ssh_agent = true
+  keys = {
+    "postgres-init.sql" = <<EOT
+      CREATE ROLE "synapse" WITH LOGIN PASSWORD '${data.sops_file.secrets.data["synapse.db_password"]}';
+      CREATE DATABASE "synapse" WITH OWNER "synapse"
+        TEMPLATE template0
+        LC_COLLATE = "C"
+        LC_CTYPE = "C";
+      EOT
+  }
+}
+
+resource "hcloud_server" "backend1" {
+  name = "backend1"
+  image = data.hcloud_image.nixos_stable.id
+  server_type = "cpx21"
+  ssh_keys = [
+    hcloud_ssh_key.phfroidmont-desktop.id
+  ]
+  keep_disk = true
+  location = "hel1"
+
+  network {
+    network_id = hcloud_network.private_network.id
+    ip = "10.0.1.1"
+  }
+
+  labels = {
+    type = "backend"
+  }
+
+  depends_on = [
+    hcloud_network_subnet.db_network_subnet
+  ]
+}
+
+resource "hcloud_floating_ip_assignment" "main" {
+  floating_ip_id = data.hcloud_floating_ip.main_ip.id
+  server_id = hcloud_server.backend1.id
+}
+
+module "deploy_nixos_backend1" {
+  source = "github.com/phfroidmont/terraform-nixos//deploy_nixos?ref=a8d5d31e59f4ce2677272e4849b122b4afc5a8e4"
+  nixos_config = "backend1"
+  flake = true
+  target_host = hcloud_server.backend1.ipv4_address
+  ssh_agent = true
+
+  keys = {
+    "synapse-extra-config.yaml" = <<EOT
+      database:
+        name: psycopg2
+        args:
+          database: synapse
+          host: "10.0.1.11"
+          user: "synapse"
+          password: "${data.sops_file.secrets.data["synapse.db_password"]}"
+      macaroon_secret_key: "${data.sops_file.secrets.data["synapse.macaroon_secret_key"]}"
+      EOT
+  }
+}

outputs.tf

@@ -0,0 +1,7 @@
+output "db1_public_ip" {
+  value = hcloud_server.db1.ipv4_address
+}
+
+output "backend1_public_ip" {
+  value = hcloud_server.backend1.ipv4_address
+}

playbook.yml

@@ -30,8 +30,8 @@
       tags: [ 'gitlab' ]
     - role: nextcloud-docker
       tags: [ 'nextcloud' ]
-    - role: matrix-docker
-      tags: [ 'matrix' ]
+#    - role: matrix-docker
+#      tags: [ 'matrix' ]
     - role: torrent-docker
       tags: [ 'torrent' ]
     - role: monit

roles/daily-backup/templates/fullBackup.sh

@@ -13,11 +13,11 @@ docker exec nextcloud_postgres_1 sh -c "pg_dump -U nextcloud nextcloud > /backup
 echo 'Dumping S.T.B. wordpress database'
 docker exec stb_db_1 sh -c "mysqldump -u stb -p{{stb_mysql_password}} stb > /backups/database.dmp"
 
-echo 'Dumping matrix database'
-docker exec matrix_db_1 sh -c "pg_dump -U synapse synapse > /backups/database.dmp"
+#echo 'Dumping matrix database'
+#docker exec matrix_db_1 sh -c "pg_dump -U synapse synapse > /backups/database.dmp"
 
-echo 'Dumping invidious database'
-docker exec invidious_postgres_1 sh -c "pg_dump -U kemal invidious > /backups/database.dmp"
+#echo 'Dumping invidious database'
+#docker exec invidious_postgres_1 sh -c "pg_dump -U kemal invidious > /backups/database.dmp"
 
 echo 'Copying murmur database'
 docker stop murmur_murmur_1

secrets.enc.yml

@@ -0,0 +1,34 @@
+synapse:
+    db_password: ENC[AES256_GCM,data:hy2BgTsRaZDQZULTW/csmnRy5ZjDEuPqxyuINv0ov5pFzDkozJVL1wut3HgBXjYZ8bqNjS5pCPQtkznw,iv:i41zKGwvPGIEZP0ZjhRaY4UMeOXBovQmLr1e1ewZhV4=,tag:3kKKYouH+lOrNxPJE5ul/Q==,type:str]
+    macaroon_secret_key: ENC[AES256_GCM,data:6n1gCit2MC8l4VR9DSUR87BB+hY5Oza33423sbV8sNIXmZsPzhyvxaBalK/0TVjLH6Q=,iv:OgHxNG96ZW4+LPZhLAtOD01Wibad6vSX6s4BrPE67YE=,tag:OGIz/ufUwt8/pUMLvoaXtg==,type:str]
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    age: []
+    lastmodified: "2021-07-14T18:42:34Z"
+    mac: ENC[AES256_GCM,data:Zjwgb3DudxssTIT0BdQbm/FEJmPsNz6412djBGBKC+KpHU/65Cw6WhjX/cR48zO/4OK3nkfJ/MKq9Vv47QLUlcyJwGgRmdBsowjpcqvrG1UMGKd+sg+rQRtDi8AVicSMJ+cnhMtIAsvGzktl+5Xep3tuFZ7stKwdvkIR9LJr2PI=,iv:1mWlZU++GgkeiCI9JUnbUvMxGR+jmWU1Lle6w2ZVJe8=,tag:AE8l0W7x68BM7OpPJmmV0Q==,type:str]
+    pgp:
+        - created_at: "2021-07-14T18:02:07Z"
+          enc: |
+            -----BEGIN PGP MESSAGE-----
+
+            hQIMAy9TuQ4zAbDHAQ/6AjQzGb2sOzHZblU/VEQce+gUebo4otQvMY5sQVl6xmBU
+            y+JiSRyUy3euGcAdNvkB9fxgNrKB5amaeP2Hte1cjJsy+iBHnmTlPKmBKet6mgJY
+            0Q1BDZf8oJUsioiHZeDfo3XLEVuIiJ/ek3v6NYPI1lfmkgV6J7oAzTYT30Z57v6C
+            zah7EcZa1Cr33hC1Ibb6o14Rzf2xgk17/fyXmFNyNnTu6XJxU85g1JDdcMKwRDpQ
+            y7VE6/nMSN0p2CGUFTuLPg7zfa9e6zDZ7UblXTV5EXPndf1MQ8Ni/AmPdQ8A9rjt
+            5kP9+Cv2CFfdXW1dgqORkQ9UC8hXdt0N3BR1X0BZWPmQyhODDUdkXndVqNDYUg8q
+            tXEN1WS66BUUB1nGbSnSa6SLLbMwB5Jle9qf5axJnCmlHLifCq9tGHhGH8h/NGNA
+            9o59iUV2pJxIaOoye9PQ4jo43J/O19YaRefETO6D5Y8SIXC0zX0IXGY/sEusaZlT
+            Iz7wEr+dc4Xy38PWzXM8p9u5ixzwYB7q7zt2OBuiiD51zD6TTjn2PUmuyY+uaqhX
+            KcmbrjGsu/HzcRlmvkVgYgpUqf7AqmaKIwGsSd1On8hpNxQI3/kiJnEjpRW+iqyb
+            EB7d8KQbpRlxCs5MMU6LznD7zvCeXyy3a0U+CFB+5tp74Wj6kxKpMZl0BYPfMrvS
+            XgGiTJ0By1L2lJphYxdKFQtoMqOZrr+y7/x/peEclPzKvdvIPHLE3P6HmOfWSJTh
+            Z6rXZDUtcBvyTEQInP5WJ1l37WiZ3B9LFRPq4Ej/0zrfsJfqmRYPQFJaMucjlNQ=
+            =eKml
+            -----END PGP MESSAGE-----
+          fp: 3AC6F170F01133CE393BCD94BE948AFD7E7873BE
+    unencrypted_suffix: _unencrypted
+    version: 3.7.1

ssh_keys/phfroidmont-desktop.pub

@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDMPhCld0dsDzpdkMvPRdiwd6IX8HF8Mb2V6uQzBl8/syeny8FbZxlZR8gk39RGxNYcLaZ+nA50DS6mOIplXCGdtozfw0Vm+FdITN3apMufWIdobG7Igs1vxKBBbkAb5lwxkEFUCUMzPdCLFHd5zabVH0WE42Be8+hYPLd5W/ikPCOgxRaGwryHHroxRMdkD3PcNE8upSEMdGl51pzgXhO6Fcig8UokOYHxV92SiQ0KEsCbc+oe8e9Gkr7g78tz+6YcTYLY2p2ygR7Vrh/WyTaUVnrNNqL8NIqp+Lc2kVtnqGXHFBJ0Wggaly+AeKWygy+dnOMEGSirhQ6/dUcB/Phz phfroidmont@archdesktop-2017-07-31