I have a basic login test with selenium and testng. When executed from eclipse, it works as expected and invoke Google Chrome. If executed from TESTNG command line, it works
I think you need to install chrome in your instance. for that you follow this basic commands
wget https://dl.google.com/linux/direct/google-chrome-stable_current_x86_64.rpm sudo yum install ./google-chrome-stable_current_*.rpm google-chrome &