openstack-controller.nix

{
  nova,
  neutron,
  keystone,
  glance,
  placement,
  horizon,
}:
{
  config,
  pkgs,
  ...
}:
let
  adminEnv = {
    OS_USERNAME = "admin";
    OS_PASSWORD = "admin";
    OS_PROJECT_NAME = "admin";
    OS_USER_DOMAIN_NAME = "Default";
    OS_PROJECT_DOMAIN_NAME = "Default";
    OS_AUTH_URL = "http://controller:5000/v3";
    OS_IDENTITY_API_VERSION = "3";
  };
in
{
  imports = [
    ./generic.nix
    ../generic/controller-host-entry.nix
    (import ./keystone.nix { inherit keystone; })
    (import ./glance.nix { inherit glance; })
    (import ./placement.nix { inherit placement; })
    (import ./nova.nix { inherit nova; })
    (import ./neutron.nix { inherit neutron; })
    (import ./horizon.nix { inherit horizon; })
  ];

  config = {

    systemd.services.database-setup = {
      description = "OpenStack Database setup";
      after = [
        "mysql.service"
        "network.target"
        "uwsgi.service"
      ];
      wantedBy = [ "multi-user.target" ];
      path = [ pkgs.mariadb ];
      serviceConfig = {
        Type = "oneshot";
        ExecStart = pkgs.writeShellScript "database-setup.sh" ''
          # Keystone
          mysql -N -e "drop database keystone;" || true
          mysql -N -e "create database keystone;" || true
          mysql -N -e "GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'localhost' IDENTIFIED BY 'keystone';"
          mysql -N -e "GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'%' IDENTIFIED BY 'keystone';"

          # Glance
          mysql -N -e "drop database glance;" || true
          mysql -N -e "create database glance;" || true
          mysql -N -e "GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'localhost' IDENTIFIED BY 'glance';"
          mysql -N -e "GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' IDENTIFIED BY 'glance';"

          # Placement
          mysql -N -e "drop database placement;" || true
          mysql -N -e "create database placement;" || true
          mysql -N -e "GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'localhost' IDENTIFIED BY 'placement';"
          mysql -N -e "GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'%' IDENTIFIED BY 'placement';"

          # Nova
          mysql -N -e "drop database nova_api;" || true
          mysql -N -e "drop database nova;" || true
          mysql -N -e "drop database nova_cell0;" || true
          mysql -N -e "create database nova_api;" || true
          mysql -N -e "create database nova;" || true
          mysql -N -e "create database nova_cell0;" || true

          mysql -N -e "GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' IDENTIFIED BY 'nova';"
          mysql -N -e "GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' IDENTIFIED BY 'nova';"
          mysql -N -e "GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' IDENTIFIED BY 'nova';"
          mysql -N -e "GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' IDENTIFIED BY 'nova';"
          mysql -N -e "GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'localhost' IDENTIFIED BY 'nova';"
          mysql -N -e "GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'%' IDENTIFIED BY 'nova';"

          # Neutron
          mysql -N -e "drop database neutron;" || true
          mysql -N -e "create database neutron;" || true
          mysql -N -e "GRANT ALL PRIVILEGES ON neutron.* TO 'neutron'@'localhost' IDENTIFIED BY 'neutron';"
          mysql -N -e "GRANT ALL PRIVILEGES ON neutron.* TO 'neutron'@'%' IDENTIFIED BY 'neutron';"
        '';
      };
    };

    systemd.services.keystone-all = {
      description = "OpenStack Keystone Daemon";
      after = [ "database-setup.service" ];
      path = [
        keystone
        pkgs.openstackclient
      ];
      environment = adminEnv;
      wantedBy = [ "multi-user.target" ];
      preStart = ''
        # Initialise the database
        keystone-manage --config-file ${config.keystone.config} db_sync
        # Set up the keystone's PKI infrastructure
        keystone-manage --config-file ${config.keystone.config} fernet_setup --keystone-user keystone --keystone-group keystone
        keystone-manage --config-file ${config.keystone.config} credential_setup --keystone-user keystone --keystone-group keystone
        chown -R keystone:keystone /etc/keystone
        chown -R keystone:keystone /var/log/keystone
      '';
      serviceConfig = {
        PermissionsStartOnly = true;
        User = "keystone";
        Group = "keystone";
        Type = "oneshot";
        ExecStart = pkgs.writeShellScript "keystone-all.sh" ''
          set -euxo pipefail
          keystone-manage --config-file ${config.keystone.config} bootstrap \
            --bootstrap-password admin\
            --bootstrap-region-id RegionOne
           openstack project create --domain default --description "Service Project" service
        '';
      };
    };

    systemd.services.glance = {
      description = "OpenStack Glance setup";
      after = [ "keystone-all.service" ];
      wantedBy = [ "multi-user.target" ];
      environment = adminEnv;
      path = [
        pkgs.openstackclient
        glance
      ];
      serviceConfig = {
        Type = "oneshot";
        User = "glance";
        Group = "glance";
        ExecStart = pkgs.writeShellScript "glance.sh" ''
          set -euxo pipefail
          openstack user create --domain default --password glance glance
          openstack role add --project service --user glance admin
          openstack role add --user glance --user-domain default --system all reader
          glance-manage --config-file ${config.glance.config} db_sync
        '';
      };
    };

    # Placement service can be tested by executing
    # curl http://controller:8778
    # and receive some json with version info as result.
    systemd.services.placement = {
      description = "OpenStack Placement setup";
      after = [ "glance.service" ];
      requiredBy = [ "multi-user.target" ];
      environment = adminEnv;
      path = [
        pkgs.openstackclient
        placement
      ];
      serviceConfig = {
        Type = "oneshot";
        User = "placement";
        Group = "placement";
        ExecStart = pkgs.writeShellScript "placement.sh" ''
          set -euxo pipefail
          openstack user create --domain default --password placement placement
          openstack role add --project service --user placement admin
          placement-manage --config-file ${config.placement.config} db sync
        '';
      };
    };

    systemd.services.nova = {
      description = "OpenStack Nova setup";
      after = [ "neutron.service" ];
      wantedBy = [ "multi-user.target" ];
      environment = adminEnv;
      path = [
        pkgs.openstackclient
        nova
      ];
      serviceConfig = {
        Type = "oneshot";
        User = "nova";
        Group = "nova";
        ExecStart = pkgs.writeShellScript "nova.sh" ''
          set -euxo pipefail
          openstack user create --domain default --password nova nova
          openstack role add --project service --user nova admin
          nova-manage --config-file ${config.nova.config} api_db sync
          nova-manage --config-file ${config.nova.config} cell_v2 map_cell0
          nova-manage --config-file ${config.nova.config} cell_v2 create_cell --name=cell1 --verbose
          nova-manage --config-file ${config.nova.config} db sync
        '';
      };
    };

    systemd.services.neutron = {
      description = "OpenStack Neutron setup";
      after = [ "placement.service" ];
      wantedBy = [ "multi-user.target" ];
      environment = adminEnv;
      path = [
        pkgs.openstackclient
        neutron
      ];
      serviceConfig = {
        Type = "oneshot";
        User = "neutron";
        Group = "neutron";
        ExecStart = pkgs.writeShellScript "neutron.sh" ''
          set -euxo pipefail
          openstack user create --domain default --password neutron neutron
          openstack role add --project service --user neutron admin
          neutron-db-manage --config-file ${config.neutron.config} --config-file ${config.neutron.ml2Config} upgrade head
        '';
      };
    };
  };
}