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Integrate with Grafana

Support level: authentik

What is Grafana​

Grafana is a multi-platform open source analytics and interactive visualization web application. It provides charts, graphs, and alerts for the web when connected to supported data sources, Grafana Enterprise version with additional capabilities is also available. It is expandable through a plug-in system.

-- https://en.wikipedia.org/wiki/Grafana

Preparation​

The following placeholders are used in this guide:

  • grafana.company is the FQDN of the Grafana installation.
  • authentik.company is the FQDN of the authentik installation.
note

This documentation lists only the settings that you need to change from their default values. Be aware that any changes other than those explicitly mentioned in this guide could cause issues accessing your application.

authentik configuration​

To support the integration of Grafana with authentik, you need to create an application/provider pair in authentik.

Create an application and provider in authentik​

  1. Log in to authentik as an administrator and open the authentik Admin interface.
  2. Navigate to Applications > Applications and click Create with Provider to create an application and provider pair. (Alternatively you can first create a provider separately, then create the application and connect it with the provider.)
  • Application: provide a descriptive name, an optional group for the type of application, the policy engine mode, and optional UI settings.
  • Choose a Provider type: select OAuth2/OpenID Connect as the provider type.
  • Configure the Provider: provide a name (or accept the auto-provided name), the authorization flow to use for this provider, and the following required configurations.
    • Note the Client ID,Client Secret, and slug values because they will be required later.
    • Set a Strict redirect URI to https://grafana.company/login/generic_oauth.
    • Select any available signing key.
  • Configure Bindings (optional): you can create a binding (policy, group, or user) to manage the listing and access to applications on a user's My applications page.
  1. Click Submit to save the new application and provider.

Terraform provider​

data "authentik_flow" "default-provider-authorization-implicit-consent" {
  slug = "default-provider-authorization-implicit-consent"
}

data "authentik_property_mapping_provider_scope" "scope-email" {
  name = "authentik default OAuth Mapping: OpenID 'email'"
}

data "authentik_property_mapping_provider_scope" "scope-profile" {
  name = "authentik default OAuth Mapping: OpenID 'profile'"
}

data "authentik_property_mapping_provider_scope" "scope-openid" {
  name = "authentik default OAuth Mapping: OpenID 'openid'"
}

resource "authentik_provider_oauth2" "grafana" {
  name          = "Grafana"
  #  Required. You can use the output of:
  #     $ openssl rand -hex 16
  client_id     = "my_client_id"

  # Optional: will be generated if not provided
  # client_secret = "my_client_secret"

  authorization_flow  = data.authentik_flow.default-provider-authorization-implicit-consent.id

  redirect_uris = ["https://grafana.company/login/generic_oauth"]

  property_mappings = [
    data.authentik_property_mapping_provider_scope.scope-email.id,
    data.authentik_property_mapping_provider_scope.scope-profile.id,
    data.authentik_property_mapping_provider_scope.scope-openid.id,
  ]
}

resource "authentik_application" "grafana" {
  name              = "Grafana"
  slug              = "grafana"
  protocol_provider = authentik_provider_oauth2.grafana.id
}

resource "authentik_group" "grafana_admins" {
  name    = "Grafana Admins"
}

resource "authentik_group" "grafana_editors" {
  name    = "Grafana Editors"
}

resource "authentik_group" "grafana_viewers" {
  name    = "Grafana Viewers"
}

Grafana configuration​

If your Grafana instance is running in Docker, set the following environment variables:

environment:
    GF_AUTH_GENERIC_OAUTH_ENABLED: "true"
    GF_AUTH_GENERIC_OAUTH_NAME: "authentik"
    GF_AUTH_GENERIC_OAUTH_CLIENT_ID: "<Client ID from above>"
    GF_AUTH_GENERIC_OAUTH_CLIENT_SECRET: "<Client Secret from above>"
    GF_AUTH_GENERIC_OAUTH_SCOPES: "openid profile email"
    GF_AUTH_GENERIC_OAUTH_AUTH_URL: "https://authentik.company/application/o/authorize/"
    GF_AUTH_GENERIC_OAUTH_TOKEN_URL: "https://authentik.company/application/o/token/"
    GF_AUTH_GENERIC_OAUTH_API_URL: "https://authentik.company/application/o/userinfo/"
    GF_AUTH_SIGNOUT_REDIRECT_URL: "https://authentik.company/application/o/<application_slug>/end-session/"
    # Optionally enable auto-login (bypasses Grafana login screen)
    GF_AUTH_OAUTH_AUTO_LOGIN: "true"
    # Optionally map user groups to Grafana roles
    GF_AUTH_GENERIC_OAUTH_ROLE_ATTRIBUTE_PATH: "contains(groups, 'Grafana Admins') && 'Admin' || contains(groups, 'Grafana Editors') && 'Editor' || 'Viewer'"
    # Required if Grafana is running behind a reverse proxy
    GF_SERVER_ROOT_URL: "https://grafana.company"

Role Mappings​

In the configuration above you can see an example of a role mapping. Upon login, this configuration looks at the groups of which the current user is a member. If any of the specified group names are found, the user will be granted the resulting role in Grafana.

In the example shown above, one of the specified group names is "Grafana Admins". If the user is a member of this group, they will be granted the "Admin" role in Grafana. If the user is not a member of the "Grafana Admins" group, it moves on to see if the user is a member of the "Grafana Editors" group. If they are, they are granted the "Editor" role. Finally, if the user is not found to be a member of either of these groups, it fails back to granting the "Viewer" role.

For more information on group/role mappings, see Grafana's docs.

Grafana Configuration Considerations​

To ensure redirects work correctly in Grafana, make sure the root_url in your configuration accurately reflects how users access Grafana through your reverse proxy. For example, if your Grafana instance is behind a proxy and accessed at https://grafana.company, set root_url to https://grafana.company. This ensures that OAuth and other redirects use the correct URL, such as https://grafana.company/login/generic_oauth, instead of defaulting to something like localhost:3000.

If you get user does not belong to org error when trying to log into grafana for the first time via OAuth, check if you have an organization with the ID of 1, if not, then you have to add the following to your grafana config:

[users]
auto_assign_org = true
auto_assign_org_id = <id-of-your-default-organization>