Multiple user_data Using files in Terraform
I am trying to have a common user_data file for common tasks like creating folders and installing a specific package, and a separate user_data file for a specific application configuration
I am trying to use below -
user_data = "${data.template_file.userdata_common.rendered}", "${data.template_file.userdata_master.rendered}"
With these configs -
Generic user data template
data "template_file" "userdata_common" {
template = "${file("${path.module}/userdata_common.sh")}"
vars {
"ALBTarget" = "${var.ALBTarget}"
"s3bucket" = "${var.s3bucket}"
"centrifydomain" = "${lookup(var.centrifydomain, format("%s-%s", lower(var.env),var.region))}"
"centrifyadgroup" = "${lookup(var.centrifyadgroup, format("%s-%s", lower(var.env),var.region))}"
}
}
Application specific configuration
data "template_file" "userdata_master" {
template = "${file("${path.module}/userdata_master.sh")}"
vars {
"ALBTarget" = "${var.ALBTarget}"
"s3bucket" = "${var.s3bucket}"
"centrifydomain" = "${lookup(var.centrifydomain, format("%s-%s", lower(var.env),var.region))}"
"centrifyadgroup" = "${lookup(var.centrifyadgroup, format("%s-%s", lower(var.env),var.region))}"
}
}
I am getting the following error when I do Plan -
Failed to load root config module: Error parsing /terraform/main.tf: key ${data.template_file.userdata_common.rendered}"' expected start of object ('{') or assignment ('=')
Is Terraform (0.9.3) possible?
If not, what's the best way to do this with Terraform?
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2 answers
Have you tried template_cloudinit_config ?
Add codes below.
data "template_cloudinit_config" "master" {
gzip = true
base64_encode = true
# get common user_data
part {
filename = "common.cfg"
content_type = "text/part-handler"
content = "${data.template_file.userdata_common.rendered}"
}
# get master user_data
part {
filename = "master.cfg"
content_type = "text/part-handler"
content = "${data.template_file.userdata_master.rendered}"
}
}
# sample code to use it.
resource "aws_instance" "web" {
ami = "ami-d05e75b8"
instance_type = "t2.micro"
user_data = "${data.template_cloudinit_config.master.rendered}"
}
Let me know if it works.
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You can use the "creator" to modify the infrastructure you create with Terraform. Here is an example from them https://www.terraform.io/intro/getting-started/provision.html
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