I will show how to change default tomcat port number in Linux and tomcat admin, ajp, server port numbers lists are 8005, 8009, and 8080.
When you will allow tomcat to listen on the default port, you must sure that port should not be running on another tomcat instance. you can also access tomcat manager using its port allowed from server file and in the firewall as well.
How To Change Tomcat Port Number:
you can also find the listening port using netstat -tnlp. This will show all the running port on the server. you can also easily find with ps -ef | grep java.
Check Out: Tomcat SetClasspath
Go to the location where tomcat installed.
And look for Server.xml file
By default, the port is listening on 8080 and we’re going to change it to 9090.
Check Out: Install Tomcat 9
Now restart the tomcat server,
./shutdown.sh && ./startup.sh
Also, add changed port in the firewall,
firewall-cmd –permanent –add-port=9090/tcp firewall-cmd –reload
Go to the browser and try to access port 9090.
As you can see Tomcat is running with port 9090
YouTube link: Tomcat Port
You’re done how to change default tomcat port list numbers in linux