Install Mongodb and Tomcat on Amazon Linux 2 (from tgz source package)

Prepare the computing machine

Create an EC2 Instance (Amazon linux2) on amazon cloud
Hit review and launch to create the instance with default settings.
A panel pops up where create a key and store in it local file.
Connect to the instance: hit the connect panel and copy the link
Open command-line and navigate to the file where your mongo.pem located.
ssh -i "mongo.pem" ec2-user@{instance-ip}.us-west-2.compute.amazonaws.com
Install Java 8 on the cloud machine sudo yum install java-1.8.0
Open security group of the instance, open port 8080 and choose your IP only (dev purpose)

Set up the environement on the cloud machine

Download Mongodb using curl command choose amazon2 package from MongoDB Download Center https://www.mongodb.com/try/download/community?tck=docs_server copy the link and run curl -LO https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-amazon2-4.4.1.tgz
Download Tomcat tar file curl -LO https://mirrors.koehn.com/apache/tomcat/tomcat-9/v9.0.39/bin/apache-tomcat-9.0.39.tar.gz
Unzip the files tar -zxvf mongodb-linux-x86_64-amazon2-4.4.1.tgz tar -zxvf apache-tomcat-9.0.39.tar.gz
Change the names mv apache-tomcat-9.0.39.tar.gz tomcat9 mv mongodb-linux-x86_64-amazon2-4.4.1.tgz mongodb
optional: add mongodb and tomcat bin to the enviroment path by adding the absolute path of mongodb/bin and tomcat/bin to the end of /.bashrc file sudo vi ~/.bashrc

Run tomcat and mongo services

Open tomcat9/bin folder, run ./start.sh
Give mongo files permission sudo chown `whoami` /var/lib/mongo sudo chown `whoami` /var/log/mongodb
Open mongo/bin folder, run ./mongod --dbpath /var/lib/mongo --logpath /var/log/mongodb/mongod.log --fork
Test the mongodb ./mongo
Now, we can open the tomcat configuration page with the instance public url. exampel:

<ec2-user@{instance-ip}.us-east-1.compute.amazonaws.com::8080>

p.s Use port 8080 and Do not add https:// (the dev server doesn’t have it yet)

Start a spring-boot web application

Open https://start.spring.io/ , choose maven, java8 and war( make sure to choose war for tomcat) and dependencies: Spring web. Define your name for the package
Create a simple hello world http request handler on main

@SpringBootApplication
@RestController
public class DemoApplication {

public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}

@GetMapping("/hello")
public String hello(@RequestParam(value = "name", defaultValue = "World") String name) {
return String.format("Hello %s!", name);
}
}

Run the applicatoin ./mvnw spring-boot:run
Create war package. (Assume maven is installed) p.s IDK have maven plugin that will have option to package the application. mvn clean package
On local machine, open the folder with server key.pem. Upload the folder with ssh ``scap ./key.pem ABSOLUTEPATH/ applicaiton.war ec2-user@ec2-instance_ip.us-east-1.compute.amazonaws.com:/home/ec2-user/
Back in the cloud server:
Optionaal Change your application name to shorter version since it will be in the url mv application.war app.war
Move the war file into tomcat webapps file ``cp app.war tomcat/webapps
Finally, open our application in:

<ec2.{instance ip}.us-west-2.compute.amazonaws.com:8080/app>

Add style and layout to the website

app working

Cheer!

references:

Mongo installtion tutorial

Tomcat website

Spring boot offcial website

Maven offical site