An FYI for anyone reading this in the future. The kafka integration does have been revised and include a docker based example.

If you are running docker or some other container system where logs are written to stdout you should utilize whatever tooling exists to capture that output (docker logs or similar solutions).

If you are using a zip file installation or some other installation method which writes log files, you can export the system logs using this API call.

Users using an sdk created by swagger can use OAuth.

FusionAuth supports all of the grants listed there except "Client Credentials" (if that's an important grant to you, please vote on this GitHub issue).

That said, you can log a user in using this API: https://fusionauth.io/docs/v1/tech/apis/login#authenticate-a-user

As mentioned in that document, you can require a FusionAuth API key (information about creating this here: https://fusionauth.io/docs/v1/tech/apis/authentication#manage-api-keys ) which would not be a per user API key. Or you could disable authentication for the /apilogin endpoint:

Authentication may be disabled per Application, see application.loginConfiguration.requireAuthentication in the Application API or navigate to Applications Edit Security in the user interface.
and have users authenticate against that endpoint.

If on the other hand you are asking about application type API keys that are managed by FusionAuth, the short answer is that is not a feature of FusionAuth. Please see this forum post for other options.