What to do to resolve:
Please log in to your account via ssh
1. Your tomcat main connector port is 21080 (look up your port # in server.xml)
2. from a command line:
[username@bruno username]$ lsof|grep 21080
java 8761 username 10u IPv6 148107993 TCP *:21080 (LISTEN)
8761 is the process id #
3. kill -9 8761
4. /home/username/tomcat/bin/startup.sh