DevOps Classroom notes 18/Aug/2026

Terraform ec2 user data

1. userdata

user_data = <<-EOF
        #!/bin/bash
        sudo apt-get update
        sudo apt-get install apache2 -y 
        sudo systemctl enable apache2
        sudo systemctl start apache2
    EOF

2. local variables

locals {
  environment = "dev"
  user_data = <<-EOT
    #!/bin/bash
    echo "Starting deployment..."
    apt-get update -y
    apt-get install -y nginx
    echo "Welcome to our ${local.environment} server" > /var/www/html/index.html
    systemctl start nginx
  EOT
}

3. template

create file user_data.sh.tpl

#!/bin/bash
sudo apt-get update
sudo apt-get install apache2 -y 
sudo systemctl enable apache2
sudo systemctl start apache2

task:

1. create terraform module ec2 and security need create by module
2. secuirty rules
   1. 22, 80, 443, 8080 – inbound rules (ingress)
   2. all trafic outbound rule (egress)