cloudformation.json

{
 "Resources" :
    {
    "TomCat":{

      "Type": "AWS::EC2::Instance",
         "Properties":{
	 "Tags" : [
   {
      "Key" : "Name",
      "Value" : "tomcatwebserver"
   },
   {
      "Key" : "keyname2",
      "Value" : "value2"
   }
],
         "ImageId" : "ami-02da3a138888ced85",
         "KeyName" : "test1234",
         "InstanceType":"t2.micro",
         "SecurityGroups" : [ "default" ],
         "UserData" : {"Fn::Base64" : {"Fn::Join" : ["", [
           "#!/bin/bash\n",
           "# Launching Instance",
           "sudo su \n",
           "sudo yum update -y \n",
           "sudo yum install tomcat -y \n",
           "echo JAVA_OPTS=-Djava.security.egd=file:/dev/./urandom -Djava.awt.headless=true -Xmx512m -XX:MaxPermSize=256m -XX:+UseConcMarkSweepGC >> /usr/share/tomcat/conf/tomcat.conf \n",
           "yum install tomcat-webapps tomcat-admin-webapps -y \n",
           "useradd admin \n",
           "echo 'password' passwd --stdin admin \n",
	   "sudo rm -rf /usr/share/tomcat/conf/tomcat-users.xml \n",
	   "sudo touch /usr/share/tomcat/conf/tomcat-users.xml \n",
           "echo \"<?xml version='1.0' encoding='utf-8'?><tomcat-users><user username='admin' password='password' roles='admin,manager,admin-gui,admin-script,manager-gui,manager-script,manager-jmx,manager-status' /></tomcat-users>\" >> /usr/share/tomcat/conf/tomcat-users.xml \n",
           "sudo systemctl start tomcat \n",
           "sudo systemctl enable tomcat \n"
         ] ] } }
        }
    }
 }
}