Install Pentaho BI Server
Download Pentaho BI Server biserver-ce-3.7.0-stable.zip
Install Pentaho with MySQL 5.1 using this document (Google doc)
After installing Pentaho BI server correctly and testing it's working as expected.
Install CDA in in Bi Server
Download CDA for Pentaho Server 3.7 (download here)
Extract the "cda folder in biserver-ce-3.7.0-stable/biserver-ce/pentaho-solutions/system/
Restart the server.
To verify CDA is working use sample CDA (download here) which need to be extracted in biserver-ce-3.7.0-stable/biserver-ce/pentaho-solutions.