title: Keycloak list all Realms from a SPA
body: <p>I am implementing an angular App and want to list all existing Realms on the keycloak Server. I configured the realm-management Client Roles of the User Logged in. Now I am able to List all Realms in a Rest-Client (https://keycloakserver/auth/admin/realms) using the login-token of this user, but when I do the same in my SPA I end up in a CORS-Error:</p>
  <pre><code>Access to XMLHttpRequest at 'https://keycloakserver/auth/admin/realms' from origin 'https://localhost:9001' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
  </code></pre>
  <p>I know how I can configure CORS Headers for a specific Client, but in my case where do I find the client or is there another way?</p>