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Customize host root volume size by Terrafrom provisioning (#4239)

Browse source 
* print hostnames (#5110)

Terrafrom - customize hosts root volume size

disable block_device by default value

Terraform formatting fix

Fixed typos

* fix resources after rebase

* Fix glusterfs image issue
This commit is contained in:
Robert Neumann 2019-09-25 14:17:59 +02:00 committed by Kubernetes Prow Robot
parent f18e77f1db
commit a5d165dc85
4 changed files with 399 additions and 17 deletions
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5
contrib/terraform/openstack/kubespray.tf
View file

@ -41,6 +41,11 @@ module "compute" {
number_of_bastions = "${var.number_of_bastions}"
number_of_k8s_nodes_no_floating_ip = "${var.number_of_k8s_nodes_no_floating_ip}"
number_of_gfs_nodes_no_floating_ip = "${var.number_of_gfs_nodes_no_floating_ip}"
bastion_root_volume_size_in_gb = "${var.bastion_root_volume_size_in_gb}"
etcd_root_volume_size_in_gb = "${var.etcd_root_volume_size_in_gb}"
master_root_volume_size_in_gb = "${var.master_root_volume_size_in_gb}"
node_root_volume_size_in_gb = "${var.node_root_volume_size_in_gb}"
gfs_root_volume_size_in_gb = "${var.gfs_root_volume_size_in_gb}"
gfs_volume_size_in_gb = "${var.gfs_volume_size_in_gb}"
public_key_path = "${var.public_key_path}"
image = "${var.image}"

377
contrib/terraform/openstack/modules/compute/main.tf
View file

@ -1,3 +1,11 @@
data "openstack_images_image_v2" "vm_image" {
name = "${var.image}"
}
data "openstack_images_image_v2" "gfs_image" {
name = "${var.image_gfs == "" ? var.image : var.image_gfs}"
}
resource "openstack_compute_keypair_v2" "k8s" {
name = "kubernetes-${var.cluster_name}"
public_key = "${chomp(file(var.public_key_path))}"
@ -89,7 +97,7 @@ resource "openstack_networking_secgroup_rule_v2" "worker" {
resource "openstack_compute_instance_v2" "bastion" {
name = "${var.cluster_name}-bastion-${count.index+1}"
count = "${var.number_of_bastions}"
count = "${var.bastion_root_volume_size_in_gb == 0 ? var.number_of_bastions : 0}"
image_name = "${var.image}"
flavor_id = "${var.flavor_bastion}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
@ -113,9 +121,44 @@ resource "openstack_compute_instance_v2" "bastion" {
}
}
resource "openstack_compute_instance_v2" "bastion_custom_volume_size" {
name = "${var.cluster_name}-bastion-${count.index+1}"
count = "${var.bastion_root_volume_size_in_gb > 0 ? var.number_of_bastions : 0}"
image_name = "${var.image}"
flavor_id = "${var.flavor_bastion}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
block_device {
uuid = "${data.openstack_images_image_v2.vm_image.id}"
source_type = "image"
volume_size = "${var.bastion_root_volume_size_in_gb}"
boot_index = 0
destination_type = "volume"
delete_on_termination = true
}
network {
name = "${var.network_name}"
}
security_groups = ["${openstack_networking_secgroup_v2.k8s.name}",
"${element(openstack_networking_secgroup_v2.bastion.*.name, count.index)}",
]
metadata = {
ssh_user = "${var.ssh_user}"
kubespray_groups = "bastion"
depends_on = "${var.network_id}"
}
provisioner "local-exec" {
command = "sed s/USER/${var.ssh_user}/ ../../contrib/terraform/openstack/ansible_bastion_template.txt | sed s/BASTION_ADDRESS/${var.bastion_fips[0]}/ > group_vars/no-floating.yml"
}
}
resource "openstack_compute_instance_v2" "k8s_master" {
name = "${var.cluster_name}-k8s-master-${count.index+1}"
count = "${var.number_of_k8s_masters}"
count = "${var.master_root_volume_size_in_gb == 0 ? var.number_of_k8s_masters : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_master}"
@ -140,9 +183,45 @@ resource "openstack_compute_instance_v2" "k8s_master" {
}
}
resource "openstack_compute_instance_v2" "k8s_master_custom_volume_size" {
name = "${var.cluster_name}-k8s-master-${count.index+1}"
count = "${var.master_root_volume_size_in_gb > 0 ? var.number_of_k8s_masters : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_master}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
block_device {
uuid = "${data.openstack_images_image_v2.vm_image.id}"
source_type = "image"
volume_size = "${var.master_root_volume_size_in_gb}"
boot_index = 0
destination_type = "volume"
delete_on_termination = true
}
network {
name = "${var.network_name}"
}
security_groups = ["${openstack_networking_secgroup_v2.k8s_master.name}",
"${openstack_networking_secgroup_v2.k8s.name}",
]
metadata = {
ssh_user = "${var.ssh_user}"
kubespray_groups = "etcd,kube-master,${var.supplementary_master_groups},k8s-cluster,vault"
depends_on = "${var.network_id}"
}
provisioner "local-exec" {
command = "sed s/USER/${var.ssh_user}/ ../../contrib/terraform/openstack/ansible_bastion_template.txt | sed s/BASTION_ADDRESS/${element( concat(var.bastion_fips, var.k8s_master_fips), 0)}/ > group_vars/no-floating.yml"
}
}
resource "openstack_compute_instance_v2" "k8s_master_no_etcd" {
name = "${var.cluster_name}-k8s-master-ne-${count.index+1}"
count = "${var.number_of_k8s_masters_no_etcd}"
count = "${var.master_root_volume_size_in_gb == 0 ? var.number_of_k8s_masters_no_etcd : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_master}"
@ -167,9 +246,45 @@ resource "openstack_compute_instance_v2" "k8s_master_no_etcd" {
}
}
resource "openstack_compute_instance_v2" "k8s_master_no_etcd_custom_volume_size" {
name = "${var.cluster_name}-k8s-master-ne-${count.index+1}"
count = "${var.master_root_volume_size_in_gb > 0 ? var.number_of_k8s_masters_no_etcd : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_master}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
block_device {
uuid = "${data.openstack_images_image_v2.vm_image.id}"
source_type = "image"
volume_size = "${var.master_root_volume_size_in_gb}"
boot_index = 0
destination_type = "volume"
delete_on_termination = true
}
network {
name = "${var.network_name}"
}
security_groups = ["${openstack_networking_secgroup_v2.k8s_master.name}",
"${openstack_networking_secgroup_v2.k8s.name}",
]
metadata = {
ssh_user = "${var.ssh_user}"
kubespray_groups = "kube-master,${var.supplementary_master_groups},k8s-cluster,vault"
depends_on = "${var.network_id}"
}
provisioner "local-exec" {
command = "sed s/USER/${var.ssh_user}/ ../../contrib/terraform/openstack/ansible_bastion_template.txt | sed s/BASTION_ADDRESS/${element( concat(var.bastion_fips, var.k8s_master_fips), 0)}/ > group_vars/no-floating.yml"
}
}
resource "openstack_compute_instance_v2" "etcd" {
name = "${var.cluster_name}-etcd-${count.index+1}"
count = "${var.number_of_etcd}"
count = "${var.etcd_root_volume_size_in_gb == 0 ? var.number_of_etcd : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_etcd}"
@ -188,9 +303,39 @@ resource "openstack_compute_instance_v2" "etcd" {
}
}
resource "openstack_compute_instance_v2" "etcd_custom_volume_size" {
name = "${var.cluster_name}-etcd-${count.index+1}"
count = "${var.etcd_root_volume_size_in_gb > 0 ? var.number_of_etcd : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_etcd}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
block_device {
uuid = "${data.openstack_images_image_v2.vm_image.id}"
source_type = "image"
volume_size = "${var.etcd_root_volume_size_in_gb}"
boot_index = 0
destination_type = "volume"
delete_on_termination = true
}
network {
name = "${var.network_name}"
}
security_groups = ["${openstack_networking_secgroup_v2.k8s.name}"]
metadata = {
ssh_user = "${var.ssh_user}"
kubespray_groups = "etcd,vault,no-floating"
depends_on = "${var.network_id}"
}
}
resource "openstack_compute_instance_v2" "k8s_master_no_floating_ip" {
name = "${var.cluster_name}-k8s-master-nf-${count.index+1}"
count = "${var.number_of_k8s_masters_no_floating_ip}"
count = "${var.master_root_volume_size_in_gb == 0 ? var.number_of_k8s_masters_no_floating_ip : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_master}"
@ -211,9 +356,41 @@ resource "openstack_compute_instance_v2" "k8s_master_no_floating_ip" {
}
}
resource "openstack_compute_instance_v2" "k8s_master_no_floating_ip_custom_volume_size" {
name = "${var.cluster_name}-k8s-master-nf-${count.index+1}"
count = "${var.master_root_volume_size_in_gb > 0 ? var.number_of_k8s_masters_no_floating_ip : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_master}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
block_device {
uuid = "${data.openstack_images_image_v2.vm_image.id}"
source_type = "image"
volume_size = "${var.master_root_volume_size_in_gb}"
boot_index = 0
destination_type = "volume"
delete_on_termination = true
}
network {
name = "${var.network_name}"
}
security_groups = ["${openstack_networking_secgroup_v2.k8s_master.name}",
"${openstack_networking_secgroup_v2.k8s.name}",
]
metadata = {
ssh_user = "${var.ssh_user}"
kubespray_groups = "etcd,kube-master,${var.supplementary_master_groups},k8s-cluster,vault,no-floating"
depends_on = "${var.network_id}"
}
}
resource "openstack_compute_instance_v2" "k8s_master_no_floating_ip_no_etcd" {
name = "${var.cluster_name}-k8s-master-ne-nf-${count.index+1}"
count = "${var.number_of_k8s_masters_no_floating_ip_no_etcd}"
count = "${var.master_root_volume_size_in_gb == 0 ? var.number_of_k8s_masters_no_floating_ip_no_etcd : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_master}"
@ -234,9 +411,41 @@ resource "openstack_compute_instance_v2" "k8s_master_no_floating_ip_no_etcd" {
}
}
resource "openstack_compute_instance_v2" "k8s_master_no_floating_ip_no_etcd_custom_volume_size" {
name = "${var.cluster_name}-k8s-master-ne-nf-${count.index+1}"
count = "${var.master_root_volume_size_in_gb > 0 ? var.number_of_k8s_masters_no_floating_ip_no_etcd : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_master}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
block_device {
uuid = "${data.openstack_images_image_v2.vm_image.id}"
source_type = "image"
volume_size = "${var.master_root_volume_size_in_gb}"
boot_index = 0
destination_type = "volume"
delete_on_termination = true
}
network {
name = "${var.network_name}"
}
security_groups = ["${openstack_networking_secgroup_v2.k8s_master.name}",
"${openstack_networking_secgroup_v2.k8s.name}",
]
metadata = {
ssh_user = "${var.ssh_user}"
kubespray_groups = "kube-master,${var.supplementary_master_groups},k8s-cluster,vault,no-floating"
depends_on = "${var.network_id}"
}
}
resource "openstack_compute_instance_v2" "k8s_node" {
name = "${var.cluster_name}-k8s-node-${count.index+1}"
count = "${var.number_of_k8s_nodes}"
count = "${var.node_root_volume_size_in_gb == 0 ? var.number_of_k8s_nodes : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_node}"
@ -261,9 +470,45 @@ resource "openstack_compute_instance_v2" "k8s_node" {
}
}
resource "openstack_compute_instance_v2" "k8s_node_custom_volume_size" {
name = "${var.cluster_name}-k8s-node-${count.index+1}"
count = "${var.node_root_volume_size_in_gb > 0 ? var.number_of_k8s_nodes : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_node}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
block_device {
uuid = "${data.openstack_images_image_v2.vm_image.id}"
source_type = "image"
volume_size = "${var.node_root_volume_size_in_gb}"
boot_index = 0
destination_type = "volume"
delete_on_termination = true
}
network {
name = "${var.network_name}"
}
security_groups = ["${openstack_networking_secgroup_v2.k8s.name}",
"${openstack_networking_secgroup_v2.worker.name}",
]
metadata = {
ssh_user = "${var.ssh_user}"
kubespray_groups = "kube-node,k8s-cluster,${var.supplementary_node_groups}"
depends_on = "${var.network_id}"
}
provisioner "local-exec" {
command = "sed s/USER/${var.ssh_user}/ ../../contrib/terraform/openstack/ansible_bastion_template.txt | sed s/BASTION_ADDRESS/${element( concat(var.bastion_fips, var.k8s_node_fips), 0)}/ > group_vars/no-floating.yml"
}
}
resource "openstack_compute_instance_v2" "k8s_node_no_floating_ip" {
name = "${var.cluster_name}-k8s-node-nf-${count.index+1}"
count = "${var.number_of_k8s_nodes_no_floating_ip}"
count = "${var.node_root_volume_size_in_gb == 0 ? var.number_of_k8s_nodes_no_floating_ip : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_node}"
@ -284,43 +529,109 @@ resource "openstack_compute_instance_v2" "k8s_node_no_floating_ip" {
}
}
resource "openstack_compute_instance_v2" "k8s_node_no_floating_ip_custom_volume_size" {
name = "${var.cluster_name}-k8s-node-nf-${count.index+1}"
count = "${var.node_root_volume_size_in_gb > 0 ? var.number_of_k8s_nodes_no_floating_ip : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_node}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
block_device {
uuid = "${data.openstack_images_image_v2.vm_image.id}"
source_type = "image"
volume_size = "${var.node_root_volume_size_in_gb}"
boot_index = 0
destination_type = "volume"
delete_on_termination = true
}
network {
name = "${var.network_name}"
}
security_groups = ["${openstack_networking_secgroup_v2.k8s.name}",
"${openstack_networking_secgroup_v2.worker.name}",
]
metadata = {
ssh_user = "${var.ssh_user}"
kubespray_groups = "kube-node,k8s-cluster,no-floating,${var.supplementary_node_groups}"
depends_on = "${var.network_id}"
}
}
resource "openstack_compute_floatingip_associate_v2" "bastion" {
count = "${var.number_of_bastions}"
count = "${var.bastion_root_volume_size_in_gb == 0 ? var.number_of_bastions : 0}"
floating_ip = "${var.bastion_fips[count.index]}"
instance_id = "${element(openstack_compute_instance_v2.bastion.*.id, count.index)}"
wait_until_associated = "${var.wait_for_floatingip}"
}
resource "openstack_compute_floatingip_associate_v2" "bastion_custom_volume_size" {
count = "${var.bastion_root_volume_size_in_gb > 0 ? var.number_of_bastions : 0}"
floating_ip = "${var.bastion_fips[count.index]}"
instance_id = "${element(openstack_compute_instance_v2.bastion_custom_volume_size.*.id, count.index)}"
wait_until_associated = "${var.wait_for_floatingip}"
}
resource "openstack_compute_floatingip_associate_v2" "k8s_master" {
count = "${var.number_of_k8s_masters}"
count = "${var.master_root_volume_size_in_gb == 0 ? var.number_of_k8s_masters : 0}"
instance_id = "${element(openstack_compute_instance_v2.k8s_master.*.id, count.index)}"
floating_ip = "${var.k8s_master_fips[count.index]}"
wait_until_associated = "${var.wait_for_floatingip}"
}
resource "openstack_compute_floatingip_associate_v2" "k8s_master_custom_volume_size" {
count = "${var.master_root_volume_size_in_gb > 0 ? var.number_of_k8s_masters : 0}"
instance_id = "${element(openstack_compute_instance_v2.k8s_master_custom_volume_size.*.id, count.index)}"
floating_ip = "${var.k8s_master_fips[count.index]}"
wait_until_associated = "${var.wait_for_floatingip}"
}
resource "openstack_compute_floatingip_associate_v2" "k8s_master_no_etcd" {
count = "${var.number_of_k8s_masters_no_etcd}"
count = "${var.master_root_volume_size_in_gb == 0 ? var.number_of_k8s_masters_no_etcd : 0}"
instance_id = "${element(openstack_compute_instance_v2.k8s_master_no_etcd.*.id, count.index)}"
floating_ip = "${var.k8s_master_no_etcd_fips[count.index]}"
}
resource "openstack_compute_floatingip_associate_v2" "k8s_master_no_etcd_custom_volume_size" {
count = "${var.master_root_volume_size_in_gb > 0 ? var.number_of_k8s_masters_no_etcd : 0}"
instance_id = "${element(openstack_compute_instance_v2.k8s_master_no_etcd_custom_volume_size.*.id, count.index)}"
floating_ip = "${var.k8s_master_no_etcd_fips[count.index]}"
}
resource "openstack_compute_floatingip_associate_v2" "k8s_node" {
count = "${var.number_of_k8s_nodes}"
count = "${var.node_root_volume_size_in_gb == 0 ? var.number_of_k8s_nodes : 0}"
floating_ip = "${var.k8s_node_fips[count.index]}"
instance_id = "${element(openstack_compute_instance_v2.k8s_node.*.id, count.index)}"
wait_until_associated = "${var.wait_for_floatingip}"
}
resource "openstack_compute_floatingip_associate_v2" "k8s_node_custom_volume_size" {
count = "${var.node_root_volume_size_in_gb > 0 ? var.number_of_k8s_nodes : 0}"
floating_ip = "${var.k8s_node_fips[count.index]}"
instance_id = "${element(openstack_compute_instance_v2.k8s_node_custom_volume_size.*.id, count.index)}"
wait_until_associated = "${var.wait_for_floatingip}"
}
resource "openstack_blockstorage_volume_v2" "glusterfs_volume" {
name = "${var.cluster_name}-glusterfs_volume-${count.index+1}"
count = "${var.number_of_gfs_nodes_no_floating_ip}"
count = "${var.gfs_root_volume_size_in_gb == 0 ? var.number_of_gfs_nodes_no_floating_ip : 0}"
description = "Non-ephemeral volume for GlusterFS"
size = "${var.gfs_volume_size_in_gb}"
}
resource "openstack_blockstorage_volume_v2" "glusterfs_volume_custom_volume_size" {
name = "${var.cluster_name}-glusterfs_volume-${count.index+1}"
count = "${var.gfs_root_volume_size_in_gb > 0 ? var.number_of_gfs_nodes_no_floating_ip : 0}"
description = "Non-ephemeral volume for GlusterFS"
size = "${var.gfs_volume_size_in_gb}"
}
resource "openstack_compute_instance_v2" "glusterfs_node_no_floating_ip" {
name = "${var.cluster_name}-gfs-node-nf-${count.index+1}"
count = "${var.number_of_gfs_nodes_no_floating_ip}"
count = "${var.gfs_root_volume_size_in_gb == 0 ? var.number_of_gfs_nodes_no_floating_ip : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image_gfs}"
flavor_id = "${var.flavor_gfs_node}"
@ -339,8 +650,44 @@ resource "openstack_compute_instance_v2" "glusterfs_node_no_floating_ip" {
}
}
resource "openstack_compute_instance_v2" "glusterfs_node_no_floating_ip_custom_volume_size" {
name = "${var.cluster_name}-gfs-node-nf-${count.index+1}"
count = "${var.gfs_root_volume_size_in_gb > 0 ? var.number_of_gfs_nodes_no_floating_ip : 0}"
availability_zone = "${element(var.az_list, count.index)}"
image_name = "${var.image}"
flavor_id = "${var.flavor_gfs_node}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
block_device {
uuid = "${data.openstack_images_image_v2.gfs_image.id}"
source_type = "image"
volume_size = "${var.gfs_root_volume_size_in_gb}"
boot_index = 0
destination_type = "volume"
delete_on_termination = true
}
network {
name = "${var.network_name}"
}
security_groups = ["${openstack_networking_secgroup_v2.k8s.name}"]
metadata = {
ssh_user = "${var.ssh_user_gfs}"
kubespray_groups = "gfs-cluster,network-storage,no-floating"
depends_on = "${var.network_id}"
}
}
resource "openstack_compute_volume_attach_v2" "glusterfs_volume" {
count = "${var.number_of_gfs_nodes_no_floating_ip}"
count = "${var.gfs_root_volume_size_in_gb == 0 ? var.number_of_gfs_nodes_no_floating_ip : 0}"
instance_id = "${element(openstack_compute_instance_v2.glusterfs_node_no_floating_ip.*.id, count.index)}"
volume_id = "${element(openstack_blockstorage_volume_v2.glusterfs_volume.*.id, count.index)}"
}
resource "openstack_compute_volume_attach_v2" "glusterfs_volume_custom_root_volume_size" {
count = "${var.gfs_root_volume_size_in_gb > 0 ? var.number_of_gfs_nodes_no_floating_ip : 0}"
instance_id = "${element(openstack_compute_instance_v2.glusterfs_node_no_floating_ip_custom_volume_size.*.id, count.index)}"
volume_id = "${element(openstack_blockstorage_volume_v2.glusterfs_volume_custom_volume_size.*.id, count.index)}"
}

10
contrib/terraform/openstack/modules/compute/variables.tf
View file

@ -22,6 +22,16 @@ variable "number_of_bastions" {}
variable "number_of_gfs_nodes_no_floating_ip" {}
variable "bastion_root_volume_size_in_gb" {}
variable "etcd_root_volume_size_in_gb" {}
variable "master_root_volume_size_in_gb" {}
variable "node_root_volume_size_in_gb" {}
variable "gfs_root_volume_size_in_gb" {}
variable "gfs_volume_size_in_gb" {}
variable "public_key_path" {}

24
contrib/terraform/openstack/variables.tf
View file

@ -44,6 +44,26 @@ variable "number_of_gfs_nodes_no_floating_ip" {
default = 0
}
variable "bastion_root_volume_size_in_gb" {
default = 0
}
variable "etcd_root_volume_size_in_gb" {
default = 0
}
variable "master_root_volume_size_in_gb" {
default = 0
}
variable "node_root_volume_size_in_gb" {
default = 0
}
variable "gfs_root_volume_size_in_gb" {
default = 0
}
variable "gfs_volume_size_in_gb" {
default = 75
}
@ -55,12 +75,12 @@ variable "public_key_path" {
variable "image" {
description = "the image to use"
default = "ubuntu-14.04"
default = ""
}
variable "image_gfs" {
description = "Glance image to use for GlusterFS"
default = "ubuntu-16.04"
default = ""
}
variable "ssh_user" {