add two queries for counting logins to athinfod for cluster

[s-preston]

No description provided.

[kaduk]

How does this compare to counterlog and the stats available from http://diswww.mit.edu/menelaus/sysd_stats/ ?

[s-preston]

We are looking for per-machine login numbers. Are the available metrics all per-cluster?
If I can get the same information from something that already exists, I'd be happy to do that.

[kaduk]

Well, generally only the aggregated information is made public, but I assume that urania gets the per-machine log entries. I thought there was a different machine that did the counterlog-specific aggregation, but don't remember what its hostname is (and never knew much about how it actually worked). I'd try asking jweiss for advice.

[s-preston]

I see. jweiss recommended this exact approach.