94 lines
1.9 KiB
Terraform
94 lines
1.9 KiB
Terraform
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export TF_LOG=TRACE
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# An AMI
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variable "ami" {
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description = "the AMI to use"
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}
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/* A multi
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line comment. */
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resource "aws_instance" "web" {
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ami = "${var.ami}"
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count = 2
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source_dest_check = false
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connection {
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user = "root"
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}
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}
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resource "aws_instance" "web" {
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subnet = "${var.env == "production" ? var.prod_subnet : var.dev_subnet}"
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}
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variable "count" {
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default = 2
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}
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variable "hostnames" {
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default = {
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"0" = "example1.org"
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"1" = "example2.net"
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}
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}
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data "template_file" "web_init" {
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# Render the template once for each instance
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count = "${length(var.hostnames)}"
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template = "${file("templates/web_init.tpl")}"
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vars {
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# count.index tells us the index of the instance we are rendering
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hostname = "${var.hostnames[count.index]}"
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}
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}
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resource "aws_instance" "web" {
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# Create one instance for each hostname
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count = "${length(var.hostnames)}"
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# Pass each instance its corresponding template_file
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user_data = "${data.template_file.web_init.*.rendered[count.index]}"
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}
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variable "count" {
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default = 2
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}
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# Define the common tags for all resources
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locals {
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common_tags = {
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Component = "awesome-app"
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Environment = "production"
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}
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}
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# Create a resource that blends the common tags with instance-specific tags.
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resource "aws_instance" "server" {
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ami = "ami-123456"
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instance_type = "t2.micro"
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tags = "${merge(
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local.common_tags,
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map(
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"Name", "awesome-app-server",
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"Role", "server"
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)
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)}"
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}
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$ terraform apply -var foo=bar -var foo=baz
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$ terraform apply -var 'foo={quux="bar"}' -var 'foo={bar="baz"}'
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$ terraform apply -var-file=foo.tfvars -var-file=bar.tfvars
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$ TF_VAR_somemap='{foo = "bar", baz = "qux"}' terraform plan
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resource "aws_instance" "web" {
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# ...
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count = "${var.count}"
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# Tag the instance with a counter starting at 1, ie. web-001
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tags {
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Name = "${format("web-%03d", count.index + 1)}"
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}
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}
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