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Active Profile Option (for development purpose):

If xconf-angular-admin is run with -Dspring.profiles.active=dev UI will use not compiled .js and .css files but the source files. See xconf-angular-admin/src/main/webapp/WEB-INF/jsp/xconfindex.jsp for details. That can be useful for local development purpose, to update UI it is just needed to reload page with cache refresh option.

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      3.  I am getting a 503 error on accessing the dataservice. What may be the reason?

       Check whether Cassandra DB is up or not. If Cassandra DB is not up, then it may affect the admin UI as well. The admin UI may be up, but you may not be able to add data to the Application.

     4. We are getting 'Failed to execute goal com.github.eirslett:frontend-maven-plugin:1.10.0:npm (Compile via NPM install) on project xconf-angular-admin: Failed to run task: 'npm install' failed.'. What will be the reason?

    For running xconf-angular admin, frontend-maven-plugin is used and it will internally install node and npm. Some dependencies may not be  getting installed due to network restrictions. Run the build command 'mvn clean install' using  -e switch and you will get the full error trace. Rectify the network issue and continue

5.   Is there a requirement for a GUI for deployment?

 No, there is no requirement for GUI based deployment environment

6.  Python 2.7 is mentioned here, Can we use any other Python versions?

At the time of reference setup, this python version worked with the Cassandra version we used. For the reference setup we  used cassandra 3.11.9 and python 2.7 . For Cassandra 3X, python 2.7 is required,  https://community.datastax.com/questions/11213/py3-support-for-cassandra-3116.html. 

7. Can openjdk v11 be used?

No, Like mentioned in the userguide app requires java 8 and you can refer the prerequisites here in readme https://github.com/rdkcentral/xconfserver#readme

8.  Local Firewall is required. Are there any known issues with this?

Firewall issue is not mentioned in the user guide. However there were issues in the past where partner would deploy the application in their VMs and due to the firewall , they may face issues to access it. This need to be resolved internally.