authelia/docs/content/configuration/session/redis.md

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---
title: "Redis"
description: "Redis Session Configuration"
summary: "Configuring the Redis Session Storage."
date: 2021-04-11T21:25:03+10:00
draft: false
images: []
weight: 106200
toc: true
aliases:
- /docs/configuration/session/redis.html
seo:
title: "" # custom title (optional)
description: "" # custom description (recommended)
canonical: "" # custom canonical URL (optional)
noindex: false # false (default) or true
---
This is a session provider. By default Authelia uses an in-memory provider. Not configuring redis leaves Authelia
[stateful](../../overview/authorization/statelessness.md). It's important in highly available scenarios to configure
this option and we highly recommend it in production environments. It requires you setup [redis] as well.
## Configuration
{{< config-alert-example >}}
```yaml {title="configuration.yml"}
session:
redis:
host: '127.0.0.1'
port: 6379
timeout: '5s'
max_retries: 0
username: 'authelia'
password: 'authelia'
database_index: 0
maximum_active_connections: 8
minimum_idle_connections: 0
tls:
server_name: 'myredis.{{< sitevar name="domain" nojs="example.com" >}}'
skip_verify: false
minimum_version: 'TLS1.2'
maximum_version: 'TLS1.3'
certificate_chain: |
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----
private_key: |
-----BEGIN RSA PRIVATE KEY-----
...
-----END RSA PRIVATE KEY-----
high_availability:
sentinel_name: 'mysentinel'
# If `sentinel_username` is supplied, Authelia will connect using ACL-based
# authentication. Otherwise, it will use traditional `requirepass` auth.
sentinel_username: 'sentinel_user'
sentinel_password: 'sentinel_specific_pass'
nodes:
- host: 'sentinel-node1'
port: 26379
- host: 'sentinel-node2'
port: 26379
route_by_latency: false
route_randomly: false
```
## Options
This section describes the individual configuration options.
### host
{{< confkey type="string" required="yes" >}}
The [redis] host or unix socket path. If utilising an IPv6 literal address it must be enclosed by square brackets and
quoted:
```yaml {title="configuration.yml"}
host: '[fd00:1111:2222:3333::1]'
```
### timeout
{{< confkey type="string,integer" syntax="duration" default="5 seconds" required="no" >}}
The Redis connection timeout.
### max_retries
{{< confkey type="integer" default="0" required="no" >}}
The maximum number of retries on a failed command. Setting this option to 0 disables retries entirely.
### port
{{< confkey type="integer" default="6379" required="no" >}}
The port [redis] is listening on.
### username
{{< confkey type="string" required="no" >}}
The username for [redis authentication](https://redis.io/commands/auth). Only supported in [redis] 6.0+, and [redis]
currently offers backwards compatibility with password-only auth. You probably do not need to set this unless you went
through the process of setting up [redis ACLs](https://redis.io/topics/acl).
### password
{{< confkey type="string" required="no" secret="yes" >}}
The password for [redis authentication](https://redis.io/commands/auth).
It's __strongly recommended__ this is a
[Random Alphanumeric String](../../reference/guides/generating-secure-values.md#generating-a-random-alphanumeric-string) with 64 or more
characters and the user password is changed to this value.
### database_index
{{< confkey type="integer" default="0" required="no" >}}
The index number of the [redis] database, the same value as specified with the redis SELECT command.
### maximum_active_connections
{{< confkey type="integer" default="8" required="no" >}}
The maximum connections open to [redis] at the same time.
### minimum_idle_connections
{{< confkey type="integer" default="0" required="no" >}}
The minimum number of [redis] connections to keep open as long as they don't exceed the maximum active connections. This
is useful if there are long delays in establishing connections.
### tls
{{< confkey type="structure" structure="tls" required="no" >}}
If defined enables connecting to [redis] over a TLS socket, and additionally controls the TLS connection
validation parameters.
### high_availability
When defining this session it enables [redis sentinel] connections. It's possible in
the future we may add [redis cluster](https://redis.io/topics/cluster-tutorial).
#### sentinel_name
{{< confkey type="string" required="yes" >}}
The [redis sentinel] master name. This is defined in your [redis sentinel] configuration, it is not a hostname. This
must be defined currently for a high availability configuration.
#### sentinel_username
{{< confkey type="string" required="no" >}}
The username for the [redis sentinel] connection. If this is provided, it will be used along with the sentinel_password
for ACL-based authentication to the Redis Sentinel. If only a password is provided, the [redis sentinel] connection will
be authenticated with traditional [requirepass] authentication.
#### sentinel_password
{{< confkey type="string" required="no (yes if sentinel_username is supplied)" secret="yes" >}}
The password for the [redis sentinel] connection. If specified with sentinel_username, configures Authelia to
authenticate to the Redis Sentinel with ACL-based authentication. Otherwise, this is used for [requirepass]
authentication.
It's __strongly recommended__ this is a
[Random Alphanumeric String](../../reference/guides/generating-secure-values.md#generating-a-random-alphanumeric-string) with 64 or more
characters and the user password is changed to this value.
#### nodes
A list of [redis sentinel] nodes to load balance over. This list is added to the host in the [redis] section above. It
is required you either define the [redis] host or one [redis sentinel] node. The [redis] host must be a [redis sentinel]
host, not a regular one. The individual [redis] hosts are determined using [redis sentinel] commands.
Each node has a host and port configuration. Example:
```yaml {title="configuration.yml"}
- host: redis-sentinel-0
port: 26379
```
##### host
{{< confkey type="boolean" default="false" required="no" >}}
The host of this [redis sentinel] node.
##### port
{{< confkey type="integer" default="26379" required="no" >}}
The port of this [redis sentinel] node.
#### route_by_latency
{{< confkey type="boolean" default="false" required="no" >}}
Prioritizes low latency [redis sentinel] nodes when set to true.
#### route_randomly
{{< confkey type="boolean" default="false" required="no" >}}
Randomly chooses [redis sentinel] nodes when set to true.
[redis]: https://redis.io
[redis sentinel]: https://redis.io/topics/sentinel
[requirepass]: https://redis.io/topics/config