Fix kubernetes configuration.

example/kube/authelia/configs/config.yml

@@ -22,9 +22,17 @@ logs_level: debug
 # be redirected upon successful authentication.
 default_redirection_url: https://login.kube.example.com
 
-# LDAP configuration
+# The authentication backend to use for verifying user passwords
+# and retrieve information such as email address and groups
+# users belong to.
 #
-# Example: for user john, the DN will be cn=john,ou=users,dc=example,dc=com
+# There are two supported backends: `ldap` and `file`.
+authentication_backend:
+  # LDAP backend configuration.
+  #
+  # This backend allows Authelia to be scaled to more
+  # than one instance and therefore is recommended for
+  # production.
   ldap:
     # The url of the ldap server
     url: ldap://ldap-service
@@ -59,6 +67,16 @@ ldap:
     user: cn=admin,dc=example,dc=com
     password: password
 
+  # File backend configuration.
+  #
+  # With this backend, the users database is stored in a file
+  # which is updated when users reset their passwords.
+  # Therefore, this backend is meant to be used in a dev environment
+  # and not in production since it prevents Authelia to be scaled to
+  # more than one instance.
+  #
+  ## file:
+  ##   path: ./users_database.yml
 
 # Authentication methods
 #