Tomcat ROOT folder normally contains the default pages. This article explains the steps to deploy application war file to Tomcat ROOT in webapps folder.
Step1: Login to the server via ssh as root.
Step2: Change the location to the "webapps" folder in Tomcat installation directory.
Step3: Remove the existing "ROOT" folder.
#rm -rf ROOT
Step4: Upload the application war file to "webapps" folder.
Step5: Rename the application war file to the name "ROOT.war".
Step6: Restart Tomcat service.
#systemctl restart tomcat