> For the complete documentation index, see [llms.txt](https://ysfang82.gitbook.io/development-notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ysfang82.gitbook.io/development-notes/aws-notes/lab/running-ec2.md). # Webserver Implementation **Purpose** * Launching a webserver **Steps** 1. **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" 2. **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 ``` 3. **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 "Hi, this is a webserver." > /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 ```