Summary
When you try to start the DSA, its binary reports that libstdc++.so.6 cannot be located. This happens even when the libstdc++ is installed and the file is available in /usr/local/lib/libstdc++.so.
Details
By default, the ds_agent looks for the required library in the /opt/ds_agent/lib folder.
To resolve the issue, create a symbol link /opt/ds_agent/lib/libstdc++.so.6 pointing to /usr/local/lib/libstdc++.so using the following command:
#ln -s /usr/local/lib/libstdc++.so /opt/ds_agent/lib/libstdc++.so.6