Configuring Session Cookies
Humio defaults to using cookies as a secure mechanism to establish a session between the Humio web frontend and backend API. The only information that's stored in a Humio session cookie is a session identifier.
Cookies are automatically configured based on your
PUBLIC_URL. They can also be configured manually via the
Humio configuration file or completely disabled and instead relying on a
less secure bearer token.
Using cookies puts a constraint on how the web frontend and backend API is served:
The frontend needs to be on the same domain or subdomain as the backend API.
If the web frontend and backend is both served from e.g. https://cloud.humio.com you do not need to configure anything manually.
If the frontend is served from e.g. https://cloud.humio.com and the backend is served from a subdomain such as https://api.cloud.humio.com you need to set
cloud.humio.com. That's because if Domain is specified, then subdomains are always included. Therefore, specifying Domain is less restrictive than omitting it.
If you have a need of serving the backend API and frontend from two different domains with no subdomain relation, you cannot use secure cookies. Instead you need to use a less secure bearer token. This is done by enabling bearer token authorization via the configuration option: