What is recommended Identity Server for dhis2?

Hi all

I went through a list here but confused on what identity server I should use. I plan to deploy multiple dhis2 instances which can be accessed by using same accounts (single sign on). For this, I want to have my own Identity Server without having to rely on Google or Facebook.

http://wiki.openid.net/w/page/12995226/Run%20your%20own%20identity%20server

Do anyone have experience on similar attempt or what server is best supported by dhis2?

Thanks

Thanh