Hi MongoDB,

I notice the output path for Mongos' new FTDC support is 'mongos.diagnostic.data' in the log path of the mongos. It seems in version 3.6.0 there is no way to override where this path is located, however.

As the .bson files in FTDC are not really "log files" in a traditional sense this could lead to strange problems with logrotation, also it would be nice to have the flexibility to output this elsewhere regardless.

Lastly, I was unable to find any documentation to tell me where to find the FTDC mongos path, I found it by trial and error. If possible, please add documentation on where the default FTDC directory is when using mongos.