EC2 instance user data is not executed.

by XDK 18. September 2019 22:27
Explanation:
 
The user data is not executed due to the leading whitespaces in the following format
 
resource "aws_instance" "Terraform-Demo" {
  ami = "${lookup(var.RegionToAmazonAMI, var.Region)}"
  instance_type = "t2.micro"
  key_name = "myaccountkey"
  vpc_security_group_ids =  ["${aws_security_group.webserver-sg-2.id}"]
  user_data = <<EOF
    #cloud-boothook
    #! /bin/bash
    sudo apt update
    sudo apt install -y apache2
    IP_ADDR=$(curl http://169.254.169.254/latest/meta-data/public-ipv4)
    sudo chmod 777  /var/www/html
    sudo echo "Terraform instance 2 with IP IP_ADDR" > /var/www/html/index.html
    sudo echo "Terraform instance 2 with IP IP_ADDR -- OK" > /var/www/html/health.html
  EOF
  provisioner "local-exec" {
    command = "echo ${aws_instance.Terraform-Demo.public_ip} > testP.txt"
    }
  tags = {
    Name = "TerraformDemo"
  }
}
 
Solution:
 
Either add hyphen in <<-EOF to trim the leading whitespaces or remove the whitespaces manually 

Tags:

Amazon Web Service | Terraform

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My name is Xavier Dilip Kumar Jayaraj having 13+ years of IT experience which includes solid experience and depth Knowledge in Application Life Cycle Management, Configuration Management, Implementation and Support using TFS on-premises and Azure DevOps. I have invested in gaining DevOps knowledege to expertise with Cloud Computing providers namely Microsoft Azure and Amazon Web Services in recent years. I am very positive to learn and adapt emerging technologies to client’s environment.

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The information provided here is based on my expreriences, troubleshooting and online/offline findings. It can be used as is on your own risk without any warranties and I impose no rights.