An introduction into configuring Authelia.


We document the configuration in two ways:

  1. The YAML configuration template config.template.yml has comments with very limited documentation on the effective use of a particular option. All documentation lines start with ##. Lines starting with a single # are YAML configuration options which are commented to disable them or as examples.
  2. This documentation site. Generally each section of the configuration is in its own section of the documentation site. Each configuration option is listed in its relevant section as a heading, under that heading generally are two or three colored labels.
    • The type label is purple and indicates the YAML value type of the variable. It optionally includes some additional information in parentheses.
    • The default label is blue and indicates the default value if you don’t define the option at all. This is not the same value as you will see in the examples in all instances, it is the value set when blank or undefined.
    • The required label changes color. When required it will be red, when not required it will be green, when the required state depends on another configuration value it is yellow.


Authelia validates the configuration when it starts. This process checks multiple factors including configuration keys that don’t exist, configuration keys that have changed, the values of the keys are valid, and that a configuration key isn’t supplied at the same time as a secret for the same configuration option.

You may also optionally validate your configuration against this validation process manually by using the authelia validate-config command. This command is useful prior to upgrading to prevent configuration changes from impacting downtime in an upgrade. This process does not validate integrations, it only checks that your configuration syntax is valid.

authelia validate-config --config configuration.yml