How to get Hive host,user and password into my custom service

[Satyanarayana Jampa]

Hi,
     I have written a custom service in which I need the information of 
Hive_host, hive_user and hive_password.
     Instead of asking the end-user to enter these values during installation 
as config parameters for the custom service, is there a way that I can use some 
env parameters that use to hold these values.

Similarly, I need the env. Parameters for sqoop host etc.

Thanks,
Satya.