diff --git a/app/constants.js b/app/constants.js
index 1e59c455c..21e805eeb 100644
--- a/app/constants.js
+++ b/app/constants.js
@@ -1,36 +1,69 @@
-angular
-  .module('portainer')
-  .constant('API_ENDPOINT_AUTH', 'api/auth')
-  .constant('API_ENDPOINT_KUBERNETES', 'api/kubernetes')
-  .constant('API_ENDPOINT_CUSTOM_TEMPLATES', 'api/custom_templates')
-  .constant('API_ENDPOINT_EDGE_GROUPS', 'api/edge_groups')
-  .constant('API_ENDPOINT_EDGE_JOBS', 'api/edge_jobs')
-  .constant('API_ENDPOINT_EDGE_STACKS', 'api/edge_stacks')
-  .constant('API_ENDPOINT_EDGE_TEMPLATES', 'api/edge_templates')
-  .constant('API_ENDPOINT_ENDPOINTS', 'api/endpoints')
-  .constant('API_ENDPOINT_ENDPOINT_GROUPS', 'api/endpoint_groups')
-  .constant('API_ENDPOINT_MOTD', 'api/motd')
-  .constant('API_ENDPOINT_REGISTRIES', 'api/registries')
-  .constant('API_ENDPOINT_RESOURCE_CONTROLS', 'api/resource_controls')
-  .constant('API_ENDPOINT_SETTINGS', 'api/settings')
-  .constant('API_ENDPOINT_STACKS', 'api/stacks')
-  .constant('API_ENDPOINT_STATUS', 'api/status')
-  .constant('API_ENDPOINT_SUPPORT', 'api/support')
-  .constant('API_ENDPOINT_USERS', 'api/users')
-  .constant('API_ENDPOINT_TAGS', 'api/tags')
-  .constant('API_ENDPOINT_TEAMS', 'api/teams')
-  .constant('API_ENDPOINT_TEAM_MEMBERSHIPS', 'api/team_memberships')
-  .constant('API_ENDPOINT_TEMPLATES', 'api/templates')
-  .constant('API_ENDPOINT_WEBHOOKS', 'api/webhooks')
-  .constant('API_ENDPOINT_BACKUP', 'api/backup')
-  .constant('DEFAULT_TEMPLATES_URL', 'https://raw.githubusercontent.com/portainer/templates/master/templates.json')
-  .constant('PAGINATION_MAX_ITEMS', 10)
-  .constant('APPLICATION_CACHE_VALIDITY', 3600)
-  .constant('CONSOLE_COMMANDS_LABEL_PREFIX', 'io.portainer.commands.')
-  .constant('PREDEFINED_NETWORKS', ['host', 'bridge', 'none']);
-
+export const API_ENDPOINT_AUTH = 'api/auth';
+export const API_ENDPOINT_BACKUP = 'api/backup';
+export const API_ENDPOINT_CUSTOM_TEMPLATES = 'api/custom_templates';
+export const API_ENDPOINT_EDGE_GROUPS = 'api/edge_groups';
+export const API_ENDPOINT_EDGE_JOBS = 'api/edge_jobs';
+export const API_ENDPOINT_EDGE_STACKS = 'api/edge_stacks';
+export const API_ENDPOINT_EDGE_TEMPLATES = 'api/edge_templates';
+export const API_ENDPOINT_ENDPOINTS = 'api/endpoints';
+export const API_ENDPOINT_ENDPOINT_GROUPS = 'api/endpoint_groups';
+export const API_ENDPOINT_KUBERNETES = 'api/kubernetes';
+export const API_ENDPOINT_MOTD = 'api/motd';
+export const API_ENDPOINT_REGISTRIES = 'api/registries';
+export const API_ENDPOINT_RESOURCE_CONTROLS = 'api/resource_controls';
+export const API_ENDPOINT_SETTINGS = 'api/settings';
+export const API_ENDPOINT_STACKS = 'api/stacks';
+export const API_ENDPOINT_STATUS = 'api/status';
+export const API_ENDPOINT_SUPPORT = 'api/support';
+export const API_ENDPOINT_USERS = 'api/users';
+export const API_ENDPOINT_TAGS = 'api/tags';
+export const API_ENDPOINT_TEAMS = 'api/teams';
+export const API_ENDPOINT_TEAM_MEMBERSHIPS = 'api/team_memberships';
+export const API_ENDPOINT_TEMPLATES = 'api/templates';
+export const API_ENDPOINT_WEBHOOKS = 'api/webhooks';
+export const DEFAULT_TEMPLATES_URL = 'https://raw.githubusercontent.com/portainer/templates/master/templates.json';
+export const PAGINATION_MAX_ITEMS = 10;
+export const APPLICATION_CACHE_VALIDITY = 3600;
+export const CONSOLE_COMMANDS_LABEL_PREFIX = 'io.portainer.commands.';
+export const PREDEFINED_NETWORKS = ['host', 'bridge', 'none'];
+export const KUBERNETES_DEFAULT_NAMESPACE = 'default';
+export const KUBERNETES_SYSTEM_NAMESPACES = ['kube-system', 'kube-public', 'kube-node-lease', 'portainer'];
 export const PORTAINER_FADEOUT = 1500;
 export const STACK_NAME_VALIDATION_REGEX = '^[-_a-z0-9]+$';
 export const TEMPLATE_NAME_VALIDATION_REGEX = '^[-_a-z0-9]+$';
 export const BROWSER_OS_PLATFORM = navigator.userAgent.indexOf('Windows NT') > -1 ? 'win' : 'lin';
 export const NEW_LINE_BREAKER = BROWSER_OS_PLATFORM === 'win' ? '\r\n' : '\n';
+
+// don't declare new constants, either:
+// - if only used in one file or module, declare in that file or module (as a regular js constant)
+// - if needed across modules, declare like the above constant and use es6 import for that
+angular
+  .module('portainer')
+  .constant('API_ENDPOINT_AUTH', API_ENDPOINT_AUTH)
+  .constant('API_ENDPOINT_BACKUP', API_ENDPOINT_BACKUP)
+  .constant('API_ENDPOINT_CUSTOM_TEMPLATES', API_ENDPOINT_CUSTOM_TEMPLATES)
+  .constant('API_ENDPOINT_EDGE_GROUPS', API_ENDPOINT_EDGE_GROUPS)
+  .constant('API_ENDPOINT_EDGE_JOBS', API_ENDPOINT_EDGE_JOBS)
+  .constant('API_ENDPOINT_EDGE_STACKS', API_ENDPOINT_EDGE_STACKS)
+  .constant('API_ENDPOINT_EDGE_TEMPLATES', API_ENDPOINT_EDGE_TEMPLATES)
+  .constant('API_ENDPOINT_ENDPOINTS', API_ENDPOINT_ENDPOINTS)
+  .constant('API_ENDPOINT_ENDPOINT_GROUPS', API_ENDPOINT_ENDPOINT_GROUPS)
+  .constant('API_ENDPOINT_KUBERNETES', API_ENDPOINT_KUBERNETES)
+  .constant('API_ENDPOINT_MOTD', API_ENDPOINT_MOTD)
+  .constant('API_ENDPOINT_REGISTRIES', API_ENDPOINT_REGISTRIES)
+  .constant('API_ENDPOINT_RESOURCE_CONTROLS', API_ENDPOINT_RESOURCE_CONTROLS)
+  .constant('API_ENDPOINT_SETTINGS', API_ENDPOINT_SETTINGS)
+  .constant('API_ENDPOINT_STACKS', API_ENDPOINT_STACKS)
+  .constant('API_ENDPOINT_STATUS', API_ENDPOINT_STATUS)
+  .constant('API_ENDPOINT_SUPPORT', API_ENDPOINT_SUPPORT)
+  .constant('API_ENDPOINT_USERS', API_ENDPOINT_USERS)
+  .constant('API_ENDPOINT_TAGS', API_ENDPOINT_TAGS)
+  .constant('API_ENDPOINT_TEAMS', API_ENDPOINT_TEAMS)
+  .constant('API_ENDPOINT_TEAM_MEMBERSHIPS', API_ENDPOINT_TEAM_MEMBERSHIPS)
+  .constant('API_ENDPOINT_TEMPLATES', API_ENDPOINT_TEMPLATES)
+  .constant('API_ENDPOINT_WEBHOOKS', API_ENDPOINT_WEBHOOKS)
+  .constant('DEFAULT_TEMPLATES_URL', DEFAULT_TEMPLATES_URL)
+  .constant('PAGINATION_MAX_ITEMS', PAGINATION_MAX_ITEMS)
+  .constant('APPLICATION_CACHE_VALIDITY', APPLICATION_CACHE_VALIDITY)
+  .constant('CONSOLE_COMMANDS_LABEL_PREFIX', CONSOLE_COMMANDS_LABEL_PREFIX)
+  .constant('PREDEFINED_NETWORKS', PREDEFINED_NETWORKS);