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

---
title: "Redis"
description: "Redis Session Configuration"
lead: "Configuring the Redis Session Storage."
date: 2022-03-20T12:52:27+11:00
draft: false
images: []
menu:
  configuration:
    parent: "session"
weight: 105200
toc: true
aliases:
  - /docs/configuration/session/redis.html
---

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

```yaml
session:
  redis:
    host: 127.0.0.1
    port: 6379
    username: authelia
    password: authelia
    database_index: 0
    maximum_active_connections: 8
    minimum_idle_connections: 0
    tls:
      server_name: myredis.example.com
      skip_verify: false
      minimum_version: TLS1.2
    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

### 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
host: "[fd00:1111:2222:3333::1]"
```

### 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" >}}

The password for [redis authentication](https://redis.io/commands/auth).

We recommend generating a random string with 64 characters or more for this purposes which can be done by following the
[Generating a Random Alphanumeric String](../miscellaneous/guides.md#generating-a-random-alphanumeric-string)
guide.

### 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

If defined enables [redis] over TLS, and additionally controls the TLS connection validation process. You can see how to
configure the tls section [here](../prologue/common.md#tls-configuration).

### 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)" >}}

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.

#### 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
- 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