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Add a couple of AWS exercises

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exercises/aws/solutions/launch_ec2_web_instance.md Normal file
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## AWS - Launch EC2 Web Instance
### Objectives
Launch one EC2 instance with the following requirements:
1. Amazon Linux 2 image
2. Instance type: pick up one that has 1 vCPUs and 1 GiB memory
3. Instance storage should be deleted upon the termination of the instance
4. When the instance starts, it should install:
1. Install the httpd package
2. Start the httpd service
3. Make sure the content of /var/www/html/index.html is `I made it! This is is awesome!`
5. It should have the tag: "Type: web" and the name of the instance should be "web-1"
6. HTTP traffic (port 80) should be accepted from anywhere
### Solution
1. Choose a region close to you
2. Go to EC2 service
3. Click on "Instances" in the menu and click on "Launch instances"
4. Choose image: Amazon Linux 2
5. Choose instance type: t2.micro
6. Make sure "Delete on Termination" is checked in the storage section
7. Under the "User data" field the following:
```
yum update -y
yum install -y httpd
systemctl start httpd
systemctl enable httpd
echo "<h1>I made it! This is is awesome!</h1>" > /var/www/html/index.html
```
8. Add tags with the following keys and values:
* key "Type" and the value "web"
* key "Name" and the value "web-1"
9. In the security group section, add a rule to accept HTTP traffic (TCP) on port 80 from anywhere
10. Click on "Review" and then click on "Launch" after reviewing.
11. If you don't have a key pair, create one and download it.