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OPS-5932: Migrate to launch template #31

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Jun 3, 2024
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OPS-5932: Migrate to launch template #31

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2 changes: 1 addition & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -342,7 +342,7 @@ Default:
| <a name="output_bastion_asg_name"></a> [bastion\_asg\_name](#output\_bastion\_asg\_name) | Autoscaling group name of the bastion host. (or empty string if bastion host is disabled) |
| <a name="output_bastion_elb_fqdn"></a> [bastion\_elb\_fqdn](#output\_bastion\_elb\_fqdn) | The auto-generated FQDN of the bastion ELB. |
| <a name="output_bastion_elb_security_group_id"></a> [bastion\_elb\_security\_group\_id](#output\_bastion\_elb\_security\_group\_id) | The ID of the SSH security group of the bastion host that can be attached to any other private instance in order to ssh into it. (or empty string if bastion host is disabled) |
| <a name="output_bastion_launch_config_name"></a> [bastion\_launch\_config\_name](#output\_bastion\_launch\_config\_name) | Launch configuration name of the bastion host. (or empty string if bastion host is disabled) |
| <a name="output_bastion_launch_template_name"></a> [bastion\_launch\_template\_name](#output\_bastion\_launch\_template\_name) | Launch template name of the bastion host. (or empty string if bastion host is disabled) |
| <a name="output_bastion_route53_public_dns_name"></a> [bastion\_route53\_public\_dns\_name](#output\_bastion\_route53\_public\_dns\_name) | The route53 public dns name of the bastion ELB if set. |
| <a name="output_bastion_security_group_id"></a> [bastion\_security\_group\_id](#output\_bastion\_security\_group\_id) | The ID of the SSH security group of the bastion host that can be attached to any other private instance in order to ssh into it. (or empty string if bastion host is disabled) |
| <a name="output_cgw_ids"></a> [cgw\_ids](#output\_cgw\_ids) | List of IDs of Customer Gateway |
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29 changes: 16 additions & 13 deletions main.tf
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Expand Up @@ -128,31 +128,31 @@ resource "aws_security_group" "bastion" {
)
}

resource "aws_launch_configuration" "bastion" {
resource "aws_launch_template" "bastion" {
count = var.vpc_enable_bastion_host ? 1 : 0

name_prefix = local.bastion_lc_name
image_id = data.aws_ami.bastion[0].image_id
instance_type = var.bastion_instance_type
security_groups = [aws_security_group.bastion[0].id]
enable_monitoring = false
user_data = templatefile("${path.module}/user_data.sh.tftpl",
name_prefix = local.bastion_lc_name
image_id = data.aws_ami.bastion[0].image_id
instance_type = var.bastion_instance_type
vpc_security_group_ids = [aws_security_group.bastion[0].id]
user_data = base64encode(templatefile("${path.module}/user_data.sh.tftpl",
{
ssh_user = "ec2-user"
ssh_keys = join("\n", var.bastion_ssh_keys)
}
)
))

metadata_options {
http_tokens = "required"
http_put_response_hop_limit = 1
http_endpoint = "enabled"
}

associate_public_ip_address = false

root_block_device {
volume_size = "8"
block_device_mappings {
device_name = "/dev/sda1"
ebs {
volume_size = "8"
}
}

lifecycle {
Expand All @@ -174,7 +174,10 @@ resource "aws_autoscaling_group" "bastion" {
health_check_type = "EC2"
force_delete = false
wait_for_capacity_timeout = 0
launch_configuration = aws_launch_configuration.bastion[0].name
launch_template {
id = aws_launch_template.bastion[0].id
version = aws_launch_template.bastion[0].latest_version
}

load_balancers = [module.aws_elb.id]

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6 changes: 3 additions & 3 deletions outputs.tf
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Expand Up @@ -44,9 +44,9 @@ output "bastion_asg_name" {
value = join(",", aws_autoscaling_group.bastion.*.name)
}

output "bastion_launch_config_name" {
description = "Launch configuration name of the bastion host. (or empty string if bastion host is disabled)"
value = join(",", aws_launch_configuration.bastion.*.name)
output "bastion_launch_template_name" {
description = "Launch template name of the bastion host. (or empty string if bastion host is disabled)"
value = join(",", aws_launch_template.bastion.*.name)
}

# -------------------------------------------------------------------------------------------------
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