Webserver Implementation

Purpose

Launching a webserver

Steps

Creating an EC2 instance for web server
- Choose AMI: Amazon Linux AMI 2017.09.0 (HVM), SSD Volume Type (Tick Free tier only if needed)
- Choose Instance Type: t2.micro
- Configure Instance Detail:
  - If tick "Protect against accidental termination", instance termination would be disabled. Turning termination protection off by Actions -> instance settings -> Change termination protection.
  - Advanced Details -> "User Data" -> "As text" to specify bash scripts to be run. See "3.(2)" in article.
  - IAM Role: Select role with "AmazonS3FullAccess" privilege if a S3 operation is required.
- Add Storage: Change "Volume Type" to: "Magnetic"
- Add Tag: Add "key", "value": "name", "MyEC2WebServer" (Should tag as much as possible for future cost control)
- Configure Security Group:
- Create a new security group and give the name, description as "MyWebDMZ" (Demilitarized Zone)
- Add Rule: HTTP, HTTPS
- When be asked needing to select or create a key pair
- Choose: "Create a key pair" and give the key pair name: "MyEC2KeyPair"
- click "Download Key Pair"
- click "Launch instance"

Preserve key pair file Creating a SSH folder (could be everywhere) to store key pair file

$ cd ~/Downloads
$ mkdir SSH
$ mv MyEC2KeyPair.pem SSH
$ cd SSH
$ chmod 400 MyEC2KeyPair.pem

Creating a web server There are several ways to achieve: (1) Manually link to the instance and install a web server Linking through SSH, input "yes" for first login. The i option is for file.
```
$ ssh ec2-user@${ec2_public_ip} -i MyEC2KeyPair.pem
```
Switch user to make package update and web server installed
```
$ sudo su
$ yum update -y
$ yum install httpd -y
```
Adding a index page. Turning on the web server and browsing to the instance ip should see the result.
```
$ cd /var/www/html/
$ vim index.html
$ service httpd start
```
Add web server as a routine when instance is activated.
```
$ chkconfig httpd on
```
(2) Running shell commands during instance initiation Above manual process can be done with shell commands. When creating instance, "Configure Instance" -> "Advanced Details" -> "User data" choose "As text" and give below text.
```
#!/bin/bash
yum install httpd -y
yum update -y
echo "<html><body>Hi, this is a webserver.</body></html>" > /var/www/html/index.html
service httpd start
chkconfig httpd on
```
(3) Running shell commands with a S3 bucket Above manual process can be done with shell commands. When creating instance, On "Configure Instance" page with following actions:
- IAM Role -> Select a role with "AmazonS3FullAccess" privilege.
- "Advanced Details" -> "User data" choose "As text" and give below text.
  #!/bin/bash yum update -y yum install httpd -y aws s3 cp s3://${bucket_name}/${directory} /var/www/html --recursive service httpd start chkconfig httpd on

PreviousLabs NextELB Implementation

Last updated 5 years ago

Was this helpful?

Webserver Implementation

Purpose

Launching a webserver

Steps

Creating an EC2 instance for web server
- Choose AMI: Amazon Linux AMI 2017.09.0 (HVM), SSD Volume Type (Tick Free tier only if needed)
- Choose Instance Type: t2.micro
- Configure Instance Detail:
  - If tick "Protect against accidental termination", instance termination would be disabled. Turning termination protection off by Actions -> instance settings -> Change termination protection.
  - Advanced Details -> "User Data" -> "As text" to specify bash scripts to be run. See "3.(2)" in article.
  - IAM Role: Select role with "AmazonS3FullAccess" privilege if a S3 operation is required.
- Add Storage: Change "Volume Type" to: "Magnetic"
- Add Tag: Add "key", "value": "name", "MyEC2WebServer" (Should tag as much as possible for future cost control)
- Configure Security Group:
- Create a new security group and give the name, description as "MyWebDMZ" (Demilitarized Zone)
- Add Rule: HTTP, HTTPS
- When be asked needing to select or create a key pair
- Choose: "Create a key pair" and give the key pair name: "MyEC2KeyPair"
- click "Download Key Pair"
- click "Launch instance"

Preserve key pair file Creating a SSH folder (could be everywhere) to store key pair file

$ cd ~/Downloads
$ mkdir SSH
$ mv MyEC2KeyPair.pem SSH
$ cd SSH
$ chmod 400 MyEC2KeyPair.pem

Creating a web server There are several ways to achieve: (1) Manually link to the instance and install a web server Linking through SSH, input "yes" for first login. The i option is for file.
```
$ ssh ec2-user@${ec2_public_ip} -i MyEC2KeyPair.pem
```
Switch user to make package update and web server installed
```
$ sudo su
$ yum update -y
$ yum install httpd -y
```
Adding a index page. Turning on the web server and browsing to the instance ip should see the result.
```
$ cd /var/www/html/
$ vim index.html
$ service httpd start
```
Add web server as a routine when instance is activated.
```
$ chkconfig httpd on
```
(2) Running shell commands during instance initiation Above manual process can be done with shell commands. When creating instance, "Configure Instance" -> "Advanced Details" -> "User data" choose "As text" and give below text.
```
#!/bin/bash
yum install httpd -y
yum update -y
echo "<html><body>Hi, this is a webserver.</body></html>" > /var/www/html/index.html
service httpd start
chkconfig httpd on
```
(3) Running shell commands with a S3 bucket Above manual process can be done with shell commands. When creating instance, On "Configure Instance" page with following actions:
- IAM Role -> Select a role with "AmazonS3FullAccess" privilege.
- "Advanced Details" -> "User data" choose "As text" and give below text.
  #!/bin/bash yum update -y yum install httpd -y aws s3 cp s3://${bucket_name}/${directory} /var/www/html --recursive service httpd start chkconfig httpd on

PreviousLabs NextELB Implementation

Last updated 5 years ago

Was this helpful?