How to Launch an Amazon EC2 Instance
In this post we are going to create a Linux virtual machine in the cloud hosted on Amazon Web Services. We are going to install a web server on this machine from our personal computers and serve up an index.html to the internet for everyone to see.
Launch the instance on the AWS Dashboard
Log into the AWS console. Select EC2 and then Launch Instance:
Choose the type of Operating System for our EC2 Virtual Machine
The Amazon Linux AMI comes with a whole lot of pre-built in tools including the AWS CLI, the popular programming languages and databases.
(Note: For large scale applications you may have to use Amazon’s Relational Database Service (RDS) or DynamoDB but is not necessary for this tutorial.)
Select Amazon Linux AMI:
Select the type of Memory and CPU usage we want on our virtual machine
Next we’ll have to select the type of EC2 instance we want to boot up. There are ten types of EC2 instances: Dense Storage (D2), Memory Optimized (R4), General Purpose (M4), Compute Optimized (C4), Graphics Intensive (G2), High Speed Storage (I2), Field Programmable Gateway (F1), Lowest Cost General Purpose (T2), Graphics General Purpose (P2) and Memory Optimized (X1).
That is a lot of options. Below is a visual that groups these different types. We’re going to use the smallest and most general type of instance: T2 Micro.
More details: Amazon EC2 Instance Types
Configure the virtual machine and select a pricing plan
Next we’re going to configure our instance details. There are four different pricing models for EC2 instances: On Demand, Spot, Reserved and Dedicated Hosts.
Read More: Amazon EC2 Pricing
For the most part we’re going to leave the defaults:
VPC stands for Virtual Private Cloud. One subnet is tied to one Availability Zone. IAM stands for Identity Access Management and is used to manage permissions. In the advanced section we can pass bootstrap shell scripts to our EC2 instances to do things like install PHP or Apache.
The next part relates to Elastic Beanstalk (EBS). EBS is used to create storage volumes that attach to EC2 virtual machines. With EBS we can create filesystems, run databases and other cool stuff.
There are three different storage types for root EBS volumes: General Purpose SSD (GP2), Provisioned IOPS SSD (IO1) and Magnetic HDD. SDD stands for Solid State Drive and HDD is Hard Disk Drive.
Read More: Amazon EBS Volume Types
Select storage option for Elastic Beanstalk (EBS)
EBS Volume is a virtual hard disk in the cloud. Root means it is where we are going to boot our Operating System from (such as Windows or in our case Linux).
Delete on Termination means the EBS will be deleted if we delete the EC2 instance.
Add Tags (optional for now)
Tags help you control costs. They help you see where your AWS costs are coming from. Tag everything and tag as much as possible.
Read More: Tagging Your Amazon EC2 Resources
Create a Security Group
Security Groups are virtual firewalls. We are going to create a Security Group called MyWebDMZ. The Security Rules define what type of traffic we want to allow through. We want to SSH into our EC2 so we can do things like install Apache. We want to view the website so we’ll allow HTTP and HTTPS.
Launch the instance from the AWS dashboard
Review the instance and hit Launch.
We will get a dialog where we will create a Public and Private key pair. Do not let anyone know your private key or they will be able to hack your virtual machines.
After the instances launch we’ll get to a landing page where you can select View Instances (bottom right corner).
SSH into our machine to install the web server
Grab your IPv4 Public IP address from the bottom right corner in the Description section.
Create a new folder for your SSH keys and change the permissions. I downloaded my key pair to projects folder. So change into that directory and run the following commands:
$ mkdir SSH
$ mv MyEC2KeyPair.pem SSH
$ cd SSH
$ chmod 400 MyEC2KeyPair.pem
$ ssh email@example.com -i MyEC2KeyPair.pem
The authenticity of host '220.127.116.11 (18.104.22.168)' can't be established.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '22.214.171.124' (ECDSA) to the list of known hosts.
__| __|_ )
_| ( / Amazon Linux AMI
1 package(s) needed for security, out of 1 available
Run "sudo yum update" to apply all updates.
Make ourselves a super user and update our operating system and install Apache (aka httpd):
[ec2-user@ip-172-31-16-8 ~]$ sudo su
[root@ip-172-31-16-8 ec2-user]# yum update -y
[root@ip-172-31-16-8 ec2-user]# yum install httpd -y
[root@ip-172-31-16-8 ec2-user]# cd /var/www/html
[root@ip-172-31-16-8 html]# nano index.html
Add an index.html for the internet to see
Write some HTML:
Then hit Ctrl+X and then Y that yes you want to save your changes. Then hit enter that you want to save this to index.html.
[root@ip-172-31-16-8 html]# service httpd start
Starting httpd: [ OK ]
Next navigate your web browser to your public IP address and you will be able to see your web page hosted on Amazon Web Services in the cloud.
In my case the web page was served on http://126.96.36.199/ (my public ip address for the virtual machine we created)
Conclusion and Termination
In this post we created an EC2 instance, SSH’d into it, installed Apache web server and created a web page that is publicly accessible on the internet.
We also established a security group and added customization options for our cloud storage.
To terminate the virtual machine we provisioned go to the dashboard, actions and terminate.
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