On my test machine after upgrading to 10.11, I'm running into an issue with sdmd and opendirectoryd both pegging the processor, even though I have no OpenDirectory server running and the machine's not bound to any servers. Anyone else see this?
I am also seeing this with the Server.app 5 beta. Its eating disc space too.
I was seeing this too, and at the same time Spotlight indexing was not progressing (mds and mds_stores running but doing nothing, no mdworkers in sight).
I turned off the only service I previously turned on in Server beta 1: File Sharing, rebooted, and everything looks OK now. No sdmd, opendirectoryd hanging back, no pegging, and spotlight started indexing.