Tenancy
This feature is in alpha. Use at your own risk.
This feature is available from 2024.2 and is not to be confused with brands, which used to be called tenants.
Preparations
Starting with 2024.2, authentik allows an administrator or operator to create multiple tenants. This means that an operator can manage several authentik installations without having to deploy additional instances.
Note that creating and managing tenants is handled using authentik APIs, not in the Admin interface.
authentik manages tenants by storing data for each tenant in a separate PostgreSQL schema.
This feature needs to be enabled with the AUTHENTIK_TENANTS__ENABLED=true. You also need to set AUTHENTIK_TENANTS__API_KEY to a random string, which will be used to authenticate to the tenancy API. This key will allow the creation of recovery keys for every tenant hosted by authentik, store it securely. You will also need to disable the embedded outpost with AUTHENTIK_OUTPOSTS__DISABLE_EMBEDDED_OUTPOST=true as it is not supported with tenants.
Usage
Tenants can be created using the API routes associated. Search for tenant in the API browser for the available endpoints.
When creating a tenant, you must specify a name, used for display purposes, and a schema_name, used to create the PostgreSQL schema associated with the tenant. That schema_name must start with t_ and not be more than 64 characters long.
There is always at least one tenant, public. This is the default tenant and cannot be deleted. Despite its name, it is not freely available to the world. Instead, it is stored in the public schema of the PostgreSQL database.
By default, all requests that do not explicitly belong to a tenant are redirected to the default tenant. Thus, after creating a tenant, you must associate a domain for which incoming requests will be redirected to said tenant. You can do so with API endpoints. After creating a domain example.org that is associated to the tenant t_example, all requests made to example.org will use the t_example tenant. However, requests made to authentik.tld, subdomain.example.org and all other domains will use the default tenant.
Expression policies currently have access to all tenants.
Notes
Upon creating another tenant, a new schema will be created by cloning the template schema. This special schema is like a tenant with no data created in it. Cloning an existing schema instead of creating a new one and running migrations on it is done for efficiency purposes.
Data stored in Redis (cache, tasks, locks) will usually get its keys prefixed by the schema_name.
Files are stored by-tenant, under a schema_name directory. For example, /media/t_example. The same is true regardless of the storage backend.