portainer/app/agent/components/node-selector/nodeSelectorController.js

angular.module('portainer.agent').controller('NodeSelectorController', [
  'AgentService',
  'Notifications',
  function (AgentService, Notifications) {
    var ctrl = this;

    this.$onInit = function () {
      AgentService.agents()
        .then(function success(data) {
          ctrl.agents = data;
          if (!ctrl.model) {
            ctrl.model = data[0].NodeName;
          }
        })
        .catch(function error(err) {
          Notifications.error('Failure', err, 'Unable to load agents');
        });
    };
  },
]);