Assigns device for gluster brick volume automatically in terraform

contrib/terraform/openstack/kubespray.tf

@@ -153,7 +153,6 @@ resource "openstack_compute_instance_v2" "glusterfs_node_no_floating_ip" {
     }
     volume {
         volume_id = "${element(openstack_blockstorage_volume_v2.glusterfs_volume.*.id, count.index)}"
-        device = "/dev/vdb"
     }
     provisioner "local-exec" {
 	command = "sed s/USER/${var.ssh_user}/ contrib/terraform/openstack/ansible_bastion_template.txt | sed s/BASTION_ADDRESS/${element(openstack_networking_floatingip_v2.k8s_master.*.address, 0)}/ > contrib/terraform/openstack/group_vars/gfs-cluster.yml"        

contrib/terraform/terraform.py

@@ -347,6 +347,15 @@ def openstack_host(resource, module_name):
     if 'metadata.ssh_user' in raw_attrs:
         attrs['ansible_ssh_user'] = raw_attrs['metadata.ssh_user']
 
+    if 'volume.#' in raw_attrs.keys() and int(raw_attrs['volume.#']) > 0:
+        device_index = 1
+        for key, value in raw_attrs.items():
+            match = re.search("^volume.*.device$", key)
+            if match:
+                attrs['disk_volume_device_'+str(device_index)] = value
+                device_index += 1
+
+
     # attrs specific to Mantl
     attrs.update({
         'consul_dc': _clean_dc(attrs['metadata'].get('dc', module_name)),

roles/glusterfs/tasks/main.yml

@@ -18,7 +18,7 @@
 
 # Mount external volumes
 - name: mounting new xfs filesystem
-  mount: "name={{ gluster_volume_node_mount_dir }} src=/dev/vdb fstype=xfs state=mounted"
+  mount: "name={{ gluster_volume_node_mount_dir }} src={{ disk_volume_device_1 }} fstype=xfs state=mounted"
 
 # Setup/install tasks.
 - include: setup-RedHat.yml