Authenticating with OpenID Connect

Security Requirements and Controls

LogScale supports authenticating with any provider following the OpenID Connect standard. When OpenID Connect is configured, LogScale accepts OpenID tokens issued by the OpenID Connect provider (LogScale acts as a resource in OpenID Connect terms). This is useful if you are running LogScale behind a proxy that handles authentication.

In addition to acting as a resource, LogScale can also act as a client responsible for authenticating users (a relying party in OpenID Connect terms). This is similar to other OAuth authentication flows LogScale supports.


The following parameters are necessary for running LogScale as either a relying party or resource:

  • OIDC_PROVIDER — URL to the OpenID Connect provider. The provider URL must match the issuer reported by the OpenID provider exactly. Required.

  • OIDC_AUDIENCE — The audience to expect in a JWT. Defaults to the client ID if set and to humio otherwise.

  • OIDC_USERNAME_CLAIM — The name of the claim to interpret as username in LogScale. The value in the claim must be a string. Defaults to humio-user. Can be set to email if using emails as usernames.

  • OIDC_GROUPS_CLAIM — The name of the claim to interpret as the groups in LogScale. The value in the claim must be an array of strings. Optional. Defaults to humio-groups.

  • OIDC_CACHE_USERINFO_MS — How long user info is cached on a LogScale node in milliseconds. Optional. Defaults to 600000 (10 minutes).

LogScale will use the OpenID Connect Discovery endpoint (%OIDC_PROVIDER%/.well-known/openid-configuration) to configure the remaining parameters automatically. If your provider does not have such an endpoint, the following parameters must be specified:

  • OIDC_AUTHORIZATION_ENDPOINT — A URL to the endpoint a user should be redirected to when authorizing. Required for clients.

  • OIDC_TOKEN_ENDPOINT — A URL to the token endpoint used to exchange a authentication code to an access token. Required for clients.

  • OIDC_TOKEN_ENDPOINT_AUTH_METHOD — The authentication method used to authenticate LogScale against the token endpoint. Can either be client_secret_basic or client_secret_post for placing the client id and secret in either basic auth or post data, respectively. Defaults to client_secret_basic, or client_secret_post if client_secret_basic is not supported as per the discovery endpoint.

  • OIDC_USERINFO_ENDPOINT — A URL to the user info endpoint used to retrieve user information from an access token. Required.

  • OIDC_JWKS_URI — A URL to the JWKS endpoint for retrieving keys for validating tokens. Required.


To use OIDC as a client, PUBLIC_URL must be set, LogScale must be registered as a client with your OpenID provider, and the provider must allow %PUBLIC_URL%/auth/oidc as a valid redirect endpoint for the client. The following parameters can be used to configure client setup

  • OIDC_OAUTH_CLIENT_ID — Client ID of your OpenID application. Required.

  • OIDC_OAUTH_CLIENT_SECRET — Client secret of your OpenID application. Required.

  • OIDC_SERVICE_NAME — The display name of the OIDC provider on the sign in page of LogScale. Optional. Defaults to "OpenID Connect".

  • OIDC_SCOPES — Comma-separated list of scopes to add in addition to the default requested scopes (openid, email, and profile). Optional.

If you are running LogScale with an HTTP Proxy and do want to use it for OpenID Connect, you should set the following environment variable:

Below is an example of a configuration file:

# Basic configuration

# Client configuration
OIDC_OAUTH_CLIENT_ID=$CLIENT_ID #The client_id from your OpenID Connect Application
OIDC_OAUTH_CLIENT_SECRET=$CLIENT_SECRET #The client_secret your OpenID Connect Application

Read more about Configuration Settings.