@pichalite we are running a cluod system, where we actually need to add those to packages. Basically a similar situation as with the heroku install. (Btw That's a really good page in the docs)
Clustering with Mongo, How to configure？
We project need clustering with Mongo，I find some documents，they are not my need。
Have somebofy configure for clustering with Mongo？
Is there any particular reason you need to cluster MongoDB? The database is never really the bottleneck, MongoDB is exceptionally fast.
How big are you planning to go? MongoDB scales like crazy.