108 lines
5.0 KiB
Plaintext
108 lines
5.0 KiB
Plaintext
---
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title: Grafana
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---
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## What is Grafana
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From https://en.wikipedia.org/wiki/Grafana
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:::note
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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.
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:::
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## Preparation
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The following placeholders will be used:
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- `grafana.company` is the FQDN of the Grafana install.
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- `authentik.company` is the FQDN of the authentik install.
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Create an application in authentik. Create an OAuth2/OpenID provider with the following parameters:
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- Client Type: `Confidential`
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- JWT Algorithm: `RS256`
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- Scopes: OpenID, Email and Profile
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- RSA Key: Select any available key
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- Redirect URIs: `https://grafana.company/login/generic_oauth`
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Note the Client ID and Client Secret values. Create an application, using the provider you've created above. Note the slug of the application you've created.
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## Grafana
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import Tabs from '@theme/Tabs';
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import TabItem from '@theme/TabItem';
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<Tabs
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defaultValue="docker"
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values={[
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{label: 'Docker', value: 'docker'},
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{label: 'Standalone', value: 'standalone'},
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]}>
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<TabItem value="docker">
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If your Grafana is running in docker, set the following environment variables:
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```yaml
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environment:
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GF_AUTH_GENERIC_OAUTH_ENABLED: "true"
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GF_AUTH_GENERIC_OAUTH_NAME: "authentik"
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GF_AUTH_GENERIC_OAUTH_CLIENT_ID: "<Client ID from above>"
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GF_AUTH_GENERIC_OAUTH_CLIENT_SECRET: "<Client Secret from above>"
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GF_AUTH_GENERIC_OAUTH_SCOPES: "openid profile email"
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GF_AUTH_GENERIC_OAUTH_AUTH_URL: "https://authentik.company/application/o/authorize/"
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GF_AUTH_GENERIC_OAUTH_TOKEN_URL: "https://authentik.company/application/o/token/"
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GF_AUTH_GENERIC_OAUTH_API_URL: "https://authentik.company/application/o/userinfo/"
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GF_AUTH_SIGNOUT_REDIRECT_URL: "https://authentik.company/application/o/<Slug of the application from above>/end-session/"
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# Optionally enable auto-login (bypasses Grafana login screen)
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GF_AUTH_OAUTH_AUTO_LOGIN: "true"
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# Optionally map user groups to Grafana roles
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GF_AUTH_GENERIC_OAUTH_ROLE_ATTRIBUTE_PATH: "contains(groups[*], 'Grafana Admins') && 'Admin' || contains(groups[*], 'Grafana Editors') && 'Editor' || 'Viewer'"
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```
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</TabItem>
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<TabItem value="standalone">
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If you are using a config-file instead, you have to set these options:
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```ini
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[auth]
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signout_redirect_url = https://authentik.company/application/o/<Slug of the application from above>/end-session/
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# Optionally enable auto-login
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oauth_auto_login = true
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[auth.generic_oauth]
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name = authentik
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enabled = true
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client_id = <Client ID from above>
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client_secret = <Client Secret from above>
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scopes = openid email profile
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auth_url = https://authentik.company/application/o/authorize/
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token_url = https://authentik.company/application/o/token/
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api_url = https://authentik.company/application/o/userinfo/
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# Optionally map user groups to Grafana roles
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role_attribute_path = contains(groups[*], 'Grafana Admins') && 'Admin' || contains(groups[*], 'Grafana Editors') && 'Editor' || 'Viewer'
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```
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</TabItem>
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</Tabs>
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### Role Mappings
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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.
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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.
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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.
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```text
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contains(groups[*], 'Grafana Admins') && 'Admin' || contains(groups[*], 'Grafana Editors') && 'Editor' || 'Viewer'
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^ attribute to search ^ group to search for ^ role to grant ^ or grant "Viewer" role.
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```
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For more information on group/role mappings, see [Grafana's docs](https://grafana.com/docs/grafana/latest/auth/generic-oauth/#role-mapping).
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### Grafana Configuration Considerations
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Make sure in your configuration that `root_url` is set correctly, otherwise your redirect url might get processed incorrectly. For example, if your grafana instance is running on the default configuration and is accesible behind a reverse proxy at `https://grafana.company`, your redirect url will end up looking like this, `https://grafana.company:3000`.
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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:
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```ini
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[users]
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auto_assign_org = true
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auto_assign_org_id = <id-of-your-default-organization>
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``` |