64 lines
2.4 KiB
Markdown
64 lines
2.4 KiB
Markdown
---
|
|
title: "Statelessness"
|
|
description: "Statelessness is the ability for a system to operate without an in-memory state. A crash could result in loss of the in-memory state causing a bad user experience."
|
|
lead: "Statelessness is the ability for a system to operate without an in-memory state. A crash could result in loss of the in-memory state causing a bad user experience."
|
|
date: 2022-06-15T17:51:47+10:00
|
|
draft: false
|
|
images: []
|
|
menu:
|
|
overview:
|
|
parent: "authorization"
|
|
weight: 390
|
|
toc: false
|
|
aliases:
|
|
- /t/statelessness
|
|
- /docs/features/statelessness.html
|
|
---
|
|
|
|
__Authelia__ supports operating as a stateless application. This is incredibly important when running in highly
|
|
available deployments like you may see in platforms like Kubernetes.
|
|
|
|
## Stateful Considerations
|
|
|
|
There are some components within __Authelia__ that may optionally be made stateful by using certain providers. Examples
|
|
of this are as follows:
|
|
|
|
### Session Provider
|
|
|
|
__Severity:__ *BREAKING*.
|
|
|
|
__Solution:__ Use a session provider other than memory (Redis).
|
|
|
|
If you do not configure an external provider for the session configuration
|
|
it stores the session in memory. This is unacceptable for the operation of
|
|
__Authelia__ and is thus not supported for high availability.
|
|
|
|
### Storage Provider
|
|
|
|
__Severity:__ *BREAKING*.
|
|
|
|
__Solution:__ Use a session provider other than SQLite3 (MySQL, MariaDB, PostgreSQL).
|
|
|
|
Use of the local storage provider (SQLite3) is not supported in high availability setups
|
|
due to a design limitation with how SQLite3 operates. Use any of the other storage providers.
|
|
|
|
### Notification Provider
|
|
|
|
__Severity:__ *HIGH*.
|
|
|
|
__Solution:__ Use a notification provider other than file system (SMTP).
|
|
|
|
Use of the file system notification provider prevents users from several key tasks which heavily impact usability of
|
|
the system, and technically reduce security. Users will be unable to reset passwords or register new 2FA devices on
|
|
their own. The file system provider is not supported for high availability.
|
|
|
|
### Authentication Provider
|
|
|
|
__Severity:__ *MEDIUM (limiting)*.
|
|
|
|
__Solution:__ Use an authentication provider other than file (LDAP), or distribute the file and disable password reset.
|
|
|
|
Use of the file authentication provider (YAML) is only partially supported with high availability setups. It's
|
|
recommended if you don't use a stateless provider that you disable password reset and make sure the file is distributed
|
|
to all instances. We do not support using the file type in these scenarios.
|