user_data about terraform-up-and-running-code HOT 4 CLOSED

Did you inline that code within a Terraform file (.tf)? If so, you need to escape the dollar sign, or it gets interpreted as Terraform interpolation. To escape it, use a double dollar sign ($$):

declare instance_address = $$(curl http://169.254.169.254/latest/meta-data/public-hostname)

from terraform-up-and-running-code.

no, I use in my User Data bash script(bootstrap WordPress), not my terraform file.in my bash script, I need the public DNS of my instance.I ran ASG and Launch resources to create a cluster.unfortunately, I couldn't find any attributes relevant to the public DNS in ASG and Launch resources.that's why I want to use hostname metadata.
1-this is my template file:
data "template_file" "user_data" {
template = "${file("files/wordpress_ubuntu.sh")}"

vars {
db_address = "${aws_db_instance.wordpress-db.address}"
db_port = "${aws_db_instance.wordpress-db.port}"
db_user = "${aws_db_instance.wordpress-db.username}"
db_password = "${aws_db_instance.wordpress-db.password}"
}
}
2-part of my bash file(wordpress_ubuntu.sh) as bootstrap
declare database_address = ${db_address}
declare database_port = ${db_port}
declare database_user = ${db_user}
declare database_password = ${db_password}

sudo wget http://s3.amazonaws.com/ec2metadata/ec2-metadata
sudo chmod u+x ec2-metadata
sudo cp ec2-metadata /usr/bin/
declare instance_address = $(curl http://169.254.169.254/latest/meta-data/pu

#update your system
sudo apt-get update && sudo apt-get upgrade -y

from terraform-up-and-running-code.

Hm, I'm not sure what that is. Try SSHing to the instance and running your script manually. Perhaps that'll make it clearer what's going on.

from terraform-up-and-running-code.

No response in ~3 years. Closing.

from terraform-up-and-running-code.