Added aws-ami module.

main.tf

@@ -12,25 +12,25 @@ terraform {
 # cloud-init
 ################################################################################
 
-# data "template_file" "master-node-user-datas" {
-#   template = file("${path.module}/cloud_init.cfg")
-#   vars = {
-#     admin-passwd  = "${var.root-admin-passwd}"
-#     admin-pub-key = "${var.root-admin-pub-key}"
-#     hostname      = "${var.vm-name-prefix}-master-${count.index}"
-#   }
-#   count = var.master-nodes
-# }
-# 
-# data "template_file" "worker-node-user-datas" {
-#   template = file("${path.module}/cloud_init.cfg")
-#   vars = {
-#     admin-passwd  = "${var.root-admin-passwd}"
-#     admin-pub-key = "${var.root-admin-pub-key}"
-#     hostname      = "${var.vm-name-prefix}-worker-${count.index}"
-#   }
-#   count = var.worker-nodes
-# }
+data "template_file" "master-node-user-datas" {
+  template = file("${path.module}/cloud_init.cfg")
+  vars = {
+    admin-passwd  = "${var.root-admin-passwd}"
+    admin-pub-key = "${var.root-admin-pub-key}"
+    hostname      = "${var.vm-name-prefix}-master-${count.index}"
+  }
+  count = var.master-nodes
+}
+
+data "template_file" "worker-node-user-datas" {
+  template = file("${path.module}/cloud_init.cfg")
+  vars = {
+    admin-passwd  = "${var.root-admin-passwd}"
+    admin-pub-key = "${var.root-admin-pub-key}"
+    hostname      = "${var.vm-name-prefix}-worker-${count.index}"
+  }
+  count = var.worker-nodes
+}
 
 data "template_file" "amzn2-node-user-datas" {
   template = file("${path.module}/cloud_init.cfg")
@@ -92,6 +92,10 @@ provider "aws" {
   region = "us-east-2"
 }
 
+module "aws-amis" {
+  source = "./modules/aws-amis"
+}
+
 module "aws-network" {
   source = "./modules/aws-network"
   name-prefix = var.vm-name-prefix
@@ -165,6 +169,10 @@ module "centos8-nodes" {
   name-prefix        = "${var.vm-name-prefix}-centos8"
 }
 
+output "amis" {
+  value = module.aws-amis.amis
+}
+
 # module "master-nodes" {
 #   source             = "./modules/aws-nodes"
 #   ami                = var.base-image

modules/aws-amis/main.tf

@@ -0,0 +1,58 @@
+locals {
+  amis = {
+    amzn2 = {
+      owner-id = "137112412989"
+      name = "amzn2-ami-hvm-2*x86_64-gp2"
+    },
+    ubuntu = {
+      owner-id = "099720109477"
+      name = "ubuntu/images/hvm-ssd/ubuntu-focal-20.04-amd64-server-*"
+    },
+    centos7 = {
+      owner-id = "125523088429"
+      name = "CentOS 7.*x86_64"
+    },
+    centos8 = {
+      owner-id = "125523088429"
+      name = "CentOS 8.*x86_64"
+    },
+    arch = {
+      owner-id = "093273469852"
+      name = "arch-linux-lts-hvm*x86_64-ebs"
+    },
+    rhel7 = {
+      owner-id = "309956199498"
+      name = "RHEL-7.*HVM*x86_64*GP2"
+    },
+    rhel8 = {
+      owner-id = "309956199498"
+      name = "RHEL-8.*HVM*x86_64*GP2"
+    }
+  }
+}
+
+data "aws_ami" "amis" {
+  for_each = local.amis
+  most_recent = true
+  owners = [each.value.owner-id]
+
+  filter {
+    name = "name"
+    values = [each.value.name]
+  }
+
+  filter {
+    name = "virtualization-type"
+    values = ["hvm"]
+  }
+
+  filter {
+    name = "architecture"
+    values = ["x86_64"]
+  }
+
+  filter {
+    name = "root-device-type"
+    values = ["ebs"]
+  }
+}

modules/aws-amis/outputs.tf

@@ -0,0 +1,3 @@
+output "amis" {
+  value = tomap({ for type, ami in data.aws_ami.amis : type => ami.id })
+}