Create Launch Template

Create a Launch Template

ℹ️ Objective

  • A Launch Template acts as a detailed “blueprint” for launching an EC2 instance. It stores all necessary configuration parameters such as the AMI, instance type, key pair, and security group.
  • Our goal is to create a Launch Template that uses the web server’s AMI (copia-ami) created in the previous step. The Auto Scaling Group will rely on this blueprint to automatically launch new instances consistently and accurately.

🔒 Steps to Follow

1. Access Launch Templates

  • From the EC2 Dashboard, on the left menu, scroll down to the Instances section and select Launch Templates.
  • Click on Create launch template.

Start creating a Launch Template

2. Configure Basic Information

  • Launch template name: copia-launch-template
  • Template version description: Launch template for Copia (Amazon Clone) servers

Enter basic information for the Launch Template

3. Select AMI (Amazon Machine Image)

  • In the Application and OS Images (Amazon Machine Image) section, select the My AMIs tab.
  • Select Owned by me and you will see the copia-ami AMI created in the previous step. Select it.

Select the created copia-ami AMI

4. Select Instance Type and Key Pair

  • Instance type: Select t3.small.
  • Key pair (login): Select copia-keypair from the dropdown list.

Select Instance Type and Key Pair

5. Configure Network Settings

  • In the Network settings section, we do not need to select a Subnet, as the Auto Scaling Group will decide this automatically.
  • However, we do need to specify the Security Group.
  • Security groups: Choose Select existing security group.
  • From the Common security groups list, select copia-sg.

Configure the Security Group for the Launch Template

6. Finalize and Review the Launch Template

  • Review all the configured information in the Summary panel on the right.
  • Scroll down and click Create launch template.

Complete the Launch Template creation

  • After successful creation, click View launch templates to review the “blueprint” you just created in the list.

View the Launch Template in the list

You now have a complete blueprint. Whenever the system needs a new web server, it can simply use this template to create a perfect copy.