Deploy Java Application On Aws 3 Tier Architecture

August 2024 (461 Words, 3 Minutes)

STEP ONE: Global AMI

We are going to create a Global AMI with the following installations

• AWS CLI
• Cloudwatch agent
• Install AWS SSM agent

Go to AWS Console, Search for EC2 on the searchbar and click on instances. Launch an instance with default settings. Make sure to create a key pair.

SSH Into the instance to install

• AWS CLI
• Cloudwatch agent
• Install AWS SSM agent

Install AWS CLI

Navigate to the Official AWS documentation and follow the instructions given to install AWS CLI depending on the operating system you are using

How to Install or update to the latest version of the AWS CLI

Install Cloudwatch agent

Navigate to the Official AWS documentation and follow the instructions given to install CloudWatch Agent

How to Install the CloudWatch agent

Install AWS SSM agent

Navigate to the Official AWS documentation and follow the instructions given to install AWS SSM agent

How to Manually install and uninstall SSM Agent on EC2 instances for Linux

Creating AMI from the instance

Navigate back to the instance dashboard and click on the instance. Go to actions then images and templates then to create image

STEP TWO: Create Golden AMI using Global AMI for Nginx application

Launch an instance using the Global AMI we created, by navigating to AMIs selecting the Global AMI then selecting Launch instance from AMI

SSH into the instance so as to:

• Install Nginx
• Push custom memory metrics to Cloudwatch

Install Nginx

Navigate to the Official Nginx Website and check on the documentation to install Nginx on the Instance

How to Install nginx on Amazon Linux 2023

Push custom memory metrics to Cloudwatch

How to push custom metrics to CloudWatch

You can use SSM to install the CloudWatch agent then use the wizard to write the configuration file

sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-config-wizard

After you have finished with the configuration, start the cloudwatch agent with

sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -c file:configuration-file-path -s

Your configuration file path is listed after finishing the configuration with the wizard

STEP THREE: Create Golden AMI using Global AMI for Apache Tomcat Application

Use the AMI created to launch another instance.

SSH into the instance so as to:

• Install Apache Tomcat
• Configure Tomcat as Systemd service
• Install JDK 11

Install Apache Tomcat

You can use the instructions from the official AWS Website

How toInstall Apache Tomcat

To Configre Tomcat as Systemd service Step1: Create the systemd file: nano /etc/systemd/system/tomcat.service Step2: Copy

[Unit]
Description=Apache Tomcat
After=network.target

[Service]
Type=forking

User=tomcat10
Group=tomcat10

ExecStart=/opt/apache-tomcat-10.1.28/bin/startup.sh
ExecStop=/opt/apache-tomcat-10.1.28/bin/shutdown.sh

• Make sure you edit that and use your installation folder Step3: Add a user useradd tomcat10 Step4: Change user password passwd tomcat10 Step5: Run the cmd sudo systemctl daemon-reload

From now on, you can use following commands to start or stop the tomcat:

sudo service tomcat start
sudo service tomcat stop

Install JDK 11

How to install Java 11 on Amazon Linux 2023

Push custom memory metrics to Cloudwatch

How to push custom metrics to CloudWatch

You can use SSM to install the CloudWatch agent then use the wizard to write the configuration file

sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-config-wizard

After you have finished with the configuration, start the cloudwatch agent with

sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -c file:configuration-file-path -s

Your configuration file path is listed after finishing the configuration with the wizard

STEP FOUR: Create Golden AMI using Global AMI for Apache Maven Build Tool