Create Elastic Network Interface - Multiple IPs on an EC2 - Lab 76

Lab 76

The lab goes through a process of creating an Amazon EC2 Instance, Security Groups, Elastic IP and additional Elastic Network Interface. The Instance will be run with initial user data scripts that will install Apache httpd with sample webpage. Elastic IP and ENI will be attached to the Instance which will result with two public IP’s attached to the same Instance.

Services Covered

EC2

Lab description

Create EC2 Instance
Create Elastic IP
Create additional Elastic Network Interface
Create Security Groups for Instance and ENI
Attach Elastic IP to ENI

Lab date

16-10-2021

Prerequisites

AWS account

Lab steps

Create a Security Group for the EC2 Instance. Create it in default VPC and andd HTTP inbound rule for all IP addresses.
Create a SG for the Network Interface with similar Inbound rule.
Launch a Amazon Linux 2 AMI machine of type t2.micro. And provide following User data that will install and run Apache httpd web server:
```
#!/bin/bash

sudo su

yum update -y

yum install -y httpd

systemctl start httpd

systemctl enable httpd

echo "<html> <h1> Response coming from server </h1> </ html>" > /var/www/html/index.html
```
Attach the earlier created SG to the Instance. When launched copy hte subnet ID ans Availability zone.
Create a Network interface and attach it with EC2 Instance. Under Network & Security go to Network interface and create one in the same subnet and availability zone as EC2 instance. For the security group use the one created earlier. Attach the network interface with EC2 instance by choosing Attach form Actions drop-down menu.
Allocate an Elastic IP address. Don’t need to make any changes, click on Allocate and then Associate EIP to the the Network interface

Go to the EC2 Instance and you should see the EIP attached to it.
Navigate to Network interfaces and you’ll find to Public IPv4 addresses attached to the same Instance
Paste them in your browser tab and you’ll receive the same respond from httpd running on the machine.

Lab files

Acknowledgements

Whizlabs

By : LU Tags: AWS Lab EC2

Create Elastic Network Interface – Multiple IPs on an EC2 – Lab 76