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# shib-keygen -h example.com

At this point you should be able to restart the shibd process. If you get errors or if shibd refuses to start, make sure you don't have syntax error in any of your XML files. The system logs should provide clues about what may have gone wrong. If necessary increase the shibboleth log level to DEBUG. 

If shibd restarts ok, you should be able to point a browser at (or use curl to download) https://example.com/Shibboleth.sso/Metadata which should contain a PEM encoded version of your newly generated SP keypair. At this point you are read to register this metadata with SWAMID.