Terraform wait for floating IP instance has been associated (#4321)

* Add wait for floating ip associate with instance

* Terraform formatting fix

* Sort Open Telekom Cloud in compatible list

contrib/terraform/openstack/README.md

@@ -16,14 +16,13 @@ most modern installs of OpenStack that support the basic services.
 - [ELASTX](https://elastx.se/)
 - [EnterCloudSuite](https://www.entercloudsuite.com/)
 - [FugaCloud](https://fuga.cloud/)
+- [Open Telekom Cloud](https://cloud.telekom.de/) : requires to set the variable `wait_for_floatingip = "true"` in your cluster.tf
 - [OVH](https://www.ovh.com/)
 - [Rackspace](https://www.rackspace.com/)
 - [Ultimum](https://ultimum.io/)
 - [VexxHost](https://vexxhost.com/)
 - [Zetta](https://www.zetta.io/)
 
-### Known incompatible public clouds
-- T-Systems / Open Telekom Cloud: requires `wait_until_associated`
 
 ## Approach
 The terraform configuration inspects variables found in
@@ -246,6 +245,7 @@ For your cluster, edit `inventory/$CLUSTER/cluster.tf`.
 |`master_allowed_remote_ips` | List of CIDR blocks allowed to initiate an API connection, `["0.0.0.0/0"]` by default |
 |`k8s_allowed_remote_ips` | List of CIDR allowed to initiate a SSH connection, empty by default |
 |`worker_allowed_ports` | List of ports to open on worker nodes, `[{ "protocol" = "tcp", "port_range_min" = 30000, "port_range_max" = 32767, "remote_ip_prefix" = "0.0.0.0/0"}]` by default |
+|`wait_for_floatingip` | Let Terraform poll the instance until the floating IP has been associated, `false` by default. |
 
 #### Terraform state files
 

contrib/terraform/openstack/kubespray.tf

@@ -63,6 +63,7 @@ module "compute" {
   supplementary_master_groups                  = "${var.supplementary_master_groups}"
   supplementary_node_groups                    = "${var.supplementary_node_groups}"
   worker_allowed_ports                         = "${var.worker_allowed_ports}"
+  wait_for_floatingip                          = "${var.wait_for_floatingip}"
 
   network_id = "${module.network.router_id}"
 }

contrib/terraform/openstack/modules/compute/main.tf

@@ -285,15 +285,17 @@ resource "openstack_compute_instance_v2" "k8s_node_no_floating_ip" {
 }
 
 resource "openstack_compute_floatingip_associate_v2" "bastion" {
-  count       = "${var.number_of_bastions}"
-  floating_ip = "${var.bastion_fips[count.index]}"
-  instance_id = "${element(openstack_compute_instance_v2.bastion.*.id, count.index)}"
+  count                 = "${var.number_of_bastions}"
+  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" "k8s_master" {
-  count       = "${var.number_of_k8s_masters}"
-  instance_id = "${element(openstack_compute_instance_v2.k8s_master.*.id, count.index)}"
-  floating_ip = "${var.k8s_master_fips[count.index]}"
+  count                 = "${var.number_of_k8s_masters}"
+  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_no_etcd" {
@@ -303,9 +305,10 @@ resource "openstack_compute_floatingip_associate_v2" "k8s_master_no_etcd" {
 }
 
 resource "openstack_compute_floatingip_associate_v2" "k8s_node" {
-  count       = "${var.number_of_k8s_nodes}"
-  floating_ip = "${var.k8s_node_fips[count.index]}"
-  instance_id = "${element(openstack_compute_instance_v2.k8s_node.*.id, count.index)}"
+  count                 = "${var.number_of_k8s_nodes}"
+  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_blockstorage_volume_v2" "glusterfs_volume" {

contrib/terraform/openstack/modules/compute/variables.tf

@@ -82,6 +82,8 @@ variable "k8s_allowed_egress_ips" {
   type = "list"
 }
 
+variable "wait_for_floatingip" {}
+
 variable "supplementary_master_groups" {
   default = ""
 }

contrib/terraform/openstack/variables.tf

@@ -125,6 +125,11 @@ variable "floatingip_pool" {
   default     = "external"
 }
 
+variable "wait_for_floatingip" {
+  description = "Terraform will poll the instance until the floating IP has been associated."
+  default     = "false"
+}
+
 variable "external_net" {
   description = "uuid of the external/public network"
 }