c12s-kubespray/contrib/terraform/aws/create-infrastructure.tf

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terraform {
required_version = ">= 0.12.0"
}
provider "aws" {
access_key = var.AWS_ACCESS_KEY_ID
secret_key = var.AWS_SECRET_ACCESS_KEY
region = var.AWS_DEFAULT_REGION
}
data "aws_availability_zones" "available" {}
/*
* Calling modules who create the initial AWS VPC / AWS ELB
* and AWS IAM Roles for Kubernetes Deployment
*/
module "aws-vpc" {
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source = "./modules/vpc"
aws_cluster_name = var.aws_cluster_name
aws_vpc_cidr_block = var.aws_vpc_cidr_block
aws_avail_zones = slice(data.aws_availability_zones.available.names, 0, 2)
aws_cidr_subnets_private = var.aws_cidr_subnets_private
aws_cidr_subnets_public = var.aws_cidr_subnets_public
default_tags = var.default_tags
}
module "aws-elb" {
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source = "./modules/elb"
aws_cluster_name = var.aws_cluster_name
aws_vpc_id = module.aws-vpc.aws_vpc_id
aws_avail_zones = slice(data.aws_availability_zones.available.names, 0, 2)
aws_subnet_ids_public = module.aws-vpc.aws_subnet_ids_public
aws_elb_api_port = var.aws_elb_api_port
k8s_secure_api_port = var.k8s_secure_api_port
default_tags = var.default_tags
}
module "aws-iam" {
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source = "./modules/iam"
aws_cluster_name = var.aws_cluster_name
}
/*
* Create Bastion Instances in AWS
*
*/
resource "aws_instance" "bastion-server" {
ami = data.aws_ami.distro.id
instance_type = var.aws_bastion_size
count = length(var.aws_cidr_subnets_public)
associate_public_ip_address = true
availability_zone = element(slice(data.aws_availability_zones.available.names, 0, 2), count.index)
subnet_id = element(module.aws-vpc.aws_subnet_ids_public, count.index)
vpc_security_group_ids = module.aws-vpc.aws_security_group
key_name = var.AWS_SSH_KEY_NAME
tags = merge(var.default_tags, tomap({
Name = "kubernetes-${var.aws_cluster_name}-bastion-${count.index}"
Cluster = var.aws_cluster_name
Role = "bastion-${var.aws_cluster_name}-${count.index}"
}))
}
/*
* Create K8s Master and worker nodes and etcd instances
*
*/
resource "aws_instance" "k8s-master" {
ami = data.aws_ami.distro.id
instance_type = var.aws_kube_master_size
count = var.aws_kube_master_num
availability_zone = element(slice(data.aws_availability_zones.available.names, 0, 2), count.index)
subnet_id = element(module.aws-vpc.aws_subnet_ids_private, count.index)
vpc_security_group_ids = module.aws-vpc.aws_security_group
iam_instance_profile = module.aws-iam.kube_control_plane-profile
key_name = var.AWS_SSH_KEY_NAME
tags = merge(var.default_tags, tomap({
Name = "kubernetes-${var.aws_cluster_name}-master${count.index}"
"kubernetes.io/cluster/${var.aws_cluster_name}" = "member"
Role = "master"
}))
}
resource "aws_elb_attachment" "attach_master_nodes" {
count = var.aws_kube_master_num
elb = module.aws-elb.aws_elb_api_id
instance = element(aws_instance.k8s-master.*.id, count.index)
}
resource "aws_instance" "k8s-etcd" {
ami = data.aws_ami.distro.id
instance_type = var.aws_etcd_size
count = var.aws_etcd_num
availability_zone = element(slice(data.aws_availability_zones.available.names, 0, 2), count.index)
subnet_id = element(module.aws-vpc.aws_subnet_ids_private, count.index)
vpc_security_group_ids = module.aws-vpc.aws_security_group
key_name = var.AWS_SSH_KEY_NAME
tags = merge(var.default_tags, tomap({
Name = "kubernetes-${var.aws_cluster_name}-etcd${count.index}"
"kubernetes.io/cluster/${var.aws_cluster_name}" = "member"
Role = "etcd"
}))
}
resource "aws_instance" "k8s-worker" {
ami = data.aws_ami.distro.id
instance_type = var.aws_kube_worker_size
count = var.aws_kube_worker_num
availability_zone = element(slice(data.aws_availability_zones.available.names, 0, 2), count.index)
subnet_id = element(module.aws-vpc.aws_subnet_ids_private, count.index)
vpc_security_group_ids = module.aws-vpc.aws_security_group
iam_instance_profile = module.aws-iam.kube-worker-profile
key_name = var.AWS_SSH_KEY_NAME
tags = merge(var.default_tags, tomap({
Name = "kubernetes-${var.aws_cluster_name}-worker${count.index}"
"kubernetes.io/cluster/${var.aws_cluster_name}" = "member"
Role = "worker"
}))
}
/*
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* Create Kubespray Inventory File
*
*/
data "template_file" "inventory" {
template = file("${path.module}/templates/inventory.tpl")
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vars = {
public_ip_address_bastion = join("\n", formatlist("bastion ansible_host=%s", aws_instance.bastion-server.*.public_ip))
connection_strings_master = join("\n", formatlist("%s ansible_host=%s", aws_instance.k8s-master.*.private_dns, aws_instance.k8s-master.*.private_ip))
connection_strings_node = join("\n", formatlist("%s ansible_host=%s", aws_instance.k8s-worker.*.private_dns, aws_instance.k8s-worker.*.private_ip))
connection_strings_etcd = join("\n", formatlist("%s ansible_host=%s", aws_instance.k8s-etcd.*.private_dns, aws_instance.k8s-etcd.*.private_ip))
list_master = join("\n", aws_instance.k8s-master.*.private_dns)
list_node = join("\n", aws_instance.k8s-worker.*.private_dns)
list_etcd = join("\n", aws_instance.k8s-etcd.*.private_dns)
elb_api_fqdn = "apiserver_loadbalancer_domain_name=\"${module.aws-elb.aws_elb_api_fqdn}\""
}
}
resource "null_resource" "inventories" {
provisioner "local-exec" {
command = "echo '${data.template_file.inventory.rendered}' > ${var.inventory_file}"
}
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triggers = {
template = data.template_file.inventory.rendered
}
}