tomcat8-installation.txt

## Installing Tomcat on linux machine ##

## Java is the dependency for tomcat to work
## Installing java
sudo yum install java-1.8.0-openjdk-devel -y

## Updating alternatives of java and javac
sudo update-alternatives --config java    ##choosejava 1.8.0 version
sudo update-alternatives --config javac    ## choose java-1.8.0 version

cd /opt

## Download tomcat
sudo wget http://redrockdigimark.com/apachemirror/tomcat/tomcat-8/v8.5.31/bin/apache-tomcat-8.5.31.tar.gz

## Untar the file
sudo tar -xf apache-tomcat-8.5.31.tar.gz

## Rename the file
sudo mv apache-tomcat-8.5.31 tomcat8

## Change the ownership of tomcat to ec2-user
sudo chown -R ec2-user:ec2-user tomcat8

## Starting tomcat server
${TOMCAT_HOME}/bin/startup.sh

## Note: default port of tomcat is 8080
## Stopping tomcat server
${TOMCAT_HOME}/bin/shutdown.sh

## Troubleshooting is done with help of tomcat log files
${TOMCAT_HOME}/logs

## Tomcat manager is the web application, using this we manage applications running on tomcat By default access is restricted to this application##
## Remove the restriction to manager application
vi /opt/tomcat8/webapps/manager/META-INF/context.xml
(Remove the <Value> …….</Value> from this file)

## Add user to access tomcat manager application
vi /opt/tomcat8/conf/tomcat-users.xml
<role rolename="manager-gui"/>
<role rolename="manager-script"/>
<user username="javahome" password="javahome" roles="manager-gui,manager-script"/>
   
## Changing Tomcat Port Number
vim /opt/tomcat8/conf/server.xml
    (Change port 8080 to desired port which are under HTTP ports)