How to change tomcat port number

Tomcat will be by default configured to run on port 8080, sometimes our system/machine may already using port 8080. so that time we need to change the port.

Following simple steps help to change the tomcat port. but before changing make sure a new port is in used.

check used ports from machine/system: netstat –aon ( run this from command prompt) then choose which is not used from range.
For example, if 9090 is not in use.

Updation steps:

•       Go to tomcat_home>conf folder
•       Edit server.xml
•       Search for "Connector port"

<Connector port="8080" protocol="HTTP/1.1"

connectionTimeout="20000"

 redirectPort="8443" />

•       Replace "8080" by your port number ex: 9090

               <Connector port="9090" protocol="HTTP/1.1"

               connectionTimeout="20000"

               redirectPort="8443" />

•       Restart tomcat server

Happy learningJ

Accessing a CentOS 7 server running on Virtual Box from outside

Recently while I am pursuing DevOps, I did CentOS 7 to practice Jenkins.

After the installation of  Tomcat, I wanted to access tomcat or other applications from outside of VM(my local machine).

These are the commands I executed in CentOS to access servers from outside of the VM.

1.      In the VM network settings, using 'Bridged Adapter'.

2.      Turn on the port of CenOS7: using the following command in terminal(for example port 8080): 

$ firewall-cmd --permanent --add-port=8080/tcp

$ firewall-cmd --reload

This solved my issue and I am able to access the servers/application URLs from outside of the CentOS

Happy learning ☺