Make it possible to disable access_ip (openstack provider) (#5239)

* Add a variable do disable access_ip

* Document the use of use_access_ip

contrib/terraform/openstack/README.md

@@ -426,7 +426,10 @@ resolvconf_mode: host_resolvconf
 ```
 node_volume_attach_limit: 26
 ```
-
+- Disable access_ip, this will make all innternal cluster traffic to be sent over local network when a floating IP is attached (default this value is set to 1)
+```
+use_access_ip: 0
+```
 
 ### Deploy Kubernetes
 

contrib/terraform/openstack/kubespray.tf

@@ -70,6 +70,7 @@ module "compute" {
   supplementary_node_groups                    = "${var.supplementary_node_groups}"
   worker_allowed_ports                         = "${var.worker_allowed_ports}"
   wait_for_floatingip                          = "${var.wait_for_floatingip}"
+  use_access_ip                                = "${var.use_access_ip}"
 
   network_id = "${module.network.router_id}"
 }

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

@@ -114,6 +114,7 @@ resource "openstack_compute_instance_v2" "bastion" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "bastion"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 
   provisioner "local-exec" {
@@ -149,6 +150,7 @@ resource "openstack_compute_instance_v2" "bastion_custom_volume_size" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "bastion"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 
   provisioner "local-exec" {
@@ -176,6 +178,7 @@ resource "openstack_compute_instance_v2" "k8s_master" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "etcd,kube-master,${var.supplementary_master_groups},k8s-cluster,vault"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 
   provisioner "local-exec" {
@@ -212,6 +215,7 @@ resource "openstack_compute_instance_v2" "k8s_master_custom_volume_size" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "etcd,kube-master,${var.supplementary_master_groups},k8s-cluster,vault"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
   
   provisioner "local-exec" {
@@ -239,6 +243,7 @@ resource "openstack_compute_instance_v2" "k8s_master_no_etcd" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "kube-master,${var.supplementary_master_groups},k8s-cluster,vault"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 
   provisioner "local-exec" {
@@ -275,6 +280,7 @@ resource "openstack_compute_instance_v2" "k8s_master_no_etcd_custom_volume_size"
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "kube-master,${var.supplementary_master_groups},k8s-cluster,vault"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 
   provisioner "local-exec" {
@@ -300,6 +306,7 @@ resource "openstack_compute_instance_v2" "etcd" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "etcd,vault,no-floating"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 }
 
@@ -330,6 +337,7 @@ resource "openstack_compute_instance_v2" "etcd_custom_volume_size" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "etcd,vault,no-floating"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 }
 
@@ -353,6 +361,7 @@ resource "openstack_compute_instance_v2" "k8s_master_no_floating_ip" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "etcd,kube-master,${var.supplementary_master_groups},k8s-cluster,vault,no-floating"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 }
 
@@ -385,6 +394,7 @@ resource "openstack_compute_instance_v2" "k8s_master_no_floating_ip_custom_volum
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "etcd,kube-master,${var.supplementary_master_groups},k8s-cluster,vault,no-floating"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 }
 
@@ -408,6 +418,7 @@ resource "openstack_compute_instance_v2" "k8s_master_no_floating_ip_no_etcd" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "kube-master,${var.supplementary_master_groups},k8s-cluster,vault,no-floating"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 }
 
@@ -440,6 +451,7 @@ resource "openstack_compute_instance_v2" "k8s_master_no_floating_ip_no_etcd_cust
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "kube-master,${var.supplementary_master_groups},k8s-cluster,vault,no-floating"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 }
 
@@ -463,6 +475,7 @@ resource "openstack_compute_instance_v2" "k8s_node" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "kube-node,k8s-cluster,${var.supplementary_node_groups}"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 
   provisioner "local-exec" {
@@ -499,6 +512,7 @@ resource "openstack_compute_instance_v2" "k8s_node_custom_volume_size" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "kube-node,k8s-cluster,${var.supplementary_node_groups}"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 
   provisioner "local-exec" {
@@ -526,6 +540,7 @@ resource "openstack_compute_instance_v2" "k8s_node_no_floating_ip" {
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "kube-node,k8s-cluster,no-floating,${var.supplementary_node_groups}"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 }
 
@@ -558,6 +573,7 @@ resource "openstack_compute_instance_v2" "k8s_node_no_floating_ip_custom_volume_
     ssh_user         = "${var.ssh_user}"
     kubespray_groups = "kube-node,k8s-cluster,no-floating,${var.supplementary_node_groups}"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 }
 
@@ -647,6 +663,7 @@ resource "openstack_compute_instance_v2" "glusterfs_node_no_floating_ip" {
     ssh_user         = "${var.ssh_user_gfs}"
     kubespray_groups = "gfs-cluster,network-storage,no-floating"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 }
 
@@ -677,6 +694,7 @@ resource "openstack_compute_instance_v2" "glusterfs_node_no_floating_ip_custom_v
     ssh_user         = "${var.ssh_user_gfs}"
     kubespray_groups = "gfs-cluster,network-storage,no-floating"
     depends_on       = "${var.network_id}"
+    use_access_ip    = "${var.use_access_ip}"
   }
 }
 

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

@@ -105,3 +105,5 @@ variable "supplementary_node_groups" {
 variable "worker_allowed_ports" {
   type = "list"
 }
+
+variable "use_access_ip" {}

contrib/terraform/openstack/variables.tf

@@ -206,3 +206,7 @@ variable "worker_allowed_ports" {
     },
   ]
 }
+
+variable "use_access_ip" {
+  default = 1
+}

contrib/terraform/terraform.py

@@ -339,14 +339,19 @@ def iter_host_ips(hosts, ips):
     '''Update hosts that have an entry in the floating IP list'''
     for host in hosts:
         host_id = host[1]['id']
+        use_access_ip = host[1]['metadata']['use_access_ip']
         if host_id in ips:
             ip = ips[host_id]
+            
             host[1].update({
                 'access_ip_v4': ip,
                 'access_ip': ip,
                 'public_ipv4': ip,
                 'ansible_ssh_host': ip,
             })
+
+            if use_access_ip == "0":
+                host[1].pop('access_ip')
         yield host