I think should have share more information but still please try following url locally
Yes it is possible to register wildfly server inside eclipse.
1. update the eclipse to use latest JBOSS plugins
2. Go ahead and follow standard server configuration in eclipse.
3. you can start the wildfly separately and still you can attached your eclipse to that server instance.
Do let me know if you need more details.
* if answered help you please mark "helpful answer"