Version: 6.x-22
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Installation

HTTP Basic Authentication

In order to set up HTTP Basic authentication, you just need to enable it in the http_authenticator section of the configuration:

http_authenticator:
  type: basic
  challenge: true

In most cases, you will want to set the challenge flag to true. The flag defines the behaviour of Search Guard, if the Authorization field in the HTTP header is not set:

If challenge is set to true, Search Guard will send a response with status UNAUTHORIZED (401) back to the client, and set the WWW-Authenticate header to Basic realm="Search Guard". If the client is accessing the Search Guard secured cluster with a browser, this will trigger the authentication dialog and the user is prompted to enter username and password.

If challenge is set to false, and no Authorization header field is set, Search Guard will not sent a WWW-Authenticate response back to the client, and authentication will fail. You may want to use this setting if you have another challenge http_authenticator in your configured authentication domains (Note that there can only be one challenge authenticator). One such scenario is when you plan to use Basic Authentication and Kerberos together, and set Kerberos to challenge: true. In that case, you can still use Basic Authentication, but only with pre-authenticated requests