For Rwanda I was working on very basic system indicator report. One key point was that some/most servers didn't have connectivity and we wanted to have a simplistic approach to routinely collect some data (via monthly paper printouts).
I've attached most of the data points below, but among the most important ones were uptime during clinic hours (separated by general system and OpenMRS uptime) as well as number of restarts and crashes.
This can help to get a sense on how stable the environment is; in our use case the servers were often shut down outside of clinic hours and power not always reliable.
I think this project evolved beyond my knowledge, so I'll let @hamish and maybe other PIH'lers jump in in case there was further development (maybe towards the EMR Monitor Module @mseaton mentioned earlier).
Primary Clinic Days: Mo,Tu,We,Th,Fr
Primary Clinic Hours: 800 - 1700
Start date: 04 Aug 2014
End date: 08 Aug 2014 (including)
Percentage of system uptime (1): 98.89 %
This week: 92.31 % (11 Aug 2014 - 17 Aug 2014)
Last week: 98.89 % (04 Aug 2014 - 10 Aug 2014)
Last month: 94.32 % (01 Jul 2014 - 31 Jul 2014)
Number of system starts (2): 3
Number of system starts without preceding shutdown (aka crashes) (2): 1
Times of last system crashes (approximation) (2): <to be implemented>
Percentage of OpenMRS uptime (1): 98.89 %
Number of Encounters (3) - (4): 307 - 66253
Number of Obs (3) - (4): 1183 - 275079
Number of users (3) - (4): 0 - 48
Number of active patients (3) - (4): 2 - 628
Number of new patients (3) - (4): 5 - 3561
Number of visits (3) - (4): 308 - 63046
Last local OpenMRS backup (5): <not found>
(1) during clinic hours between start and end date
(2) between start and end date (incl. outside of clinic hours)
(3) new during period in OpenMRS database (not voided or retired)
(4) total ever in OpenMRS database (not voided or retired)
(5) in /var/backups/OpenMRS