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--- guide:cloud:advanced [2025/10/21 15:00]
sfebruary [Single, generic, VM project]
+++ guide:cloud:advanced [2025/10/22 10:21] (current)
sfebruary [Single, generic, VM project]
@@ Line 144: / Line 144: @@
 ==== Single, generic, VM project ====
-Now that we have some base resources defined, we can proceed to creating an OpenStack instance via the IAC approach. Begin by [[https://docs.gitlab.com/user/project/#create-a-blank-project|creating a blank project in GitLab]].
+Now that we have some base resources defined, we can proceed to creating an OpenStack instance via the IAC approach. To illustrate the concept, we can again draw on a [[https://github.com/sfebruary/terraform-module-openstack-instance|pre-defined module for an instance]]. NB! This particular example assumes that an SSH key-pair already exists as a resource within your OpenStack project space, as well as a Security Group that allows SSH access to your instances, so be sure to create those first as they will be referenced below.
+Begin by [[https://docs.gitlab.com/user/project/#create-a-blank-project|creating a new, blank project in GitLab]].
 Next, we want to create a few files:
@@ Line 187: / Line 189: @@
   # general instance settings
   image_name           = "Rocky 9"
-  flavor_name          = "C4.medium"
+  flavor_name          = "C4.small"
   shortname            = "instance-project"
   volume_name          = "SSD-volume-128"
@@ Line 202: / Line 204: @@
   server_private_ip        = "10.0.0.11"
   ssh_security_group_name  = "ssh-secgroup"
-  key_pair_name = "instance-keypair"
+  key_pair_name            = "instance-keypair"
+**variables.tf**:
+  variable "public_network_name" {
+    type        = string
+    description = "The name of the public network"
+    default     = null
+  }
+  variable "private_network_name" {
+    type        = string
+    description = "The name of the private network"
+    default     = null
+  }
+  variable "private_subnet_name" {
+    type        = string
+    description = "The name of the private subnet"
+    default     = null
+  }
+  variable "server_private_port_name" {
+    type        = string
+    description = "The name of the private network port for the instance"
+    default     = null
+  }
+  variable "server_private_ip" {
+    type        = string
+    description = "The fixed IP address of the instance on the private network"
+    default     = null
+  }
+  variable "image_name" {
+    type        = string
+    description = "The image to be used for the instance"
+    default     = null
+  }
+  variable "admin_username" {
+    type        = string
+    description = "The admin username to be used for the instance"
+    default     = null
+  }
+  variable "shortname" {
+    type        = string
+    description = "The shortname to assign to the instance"
+    default     = null
+  }
+  variable "flavor_name" {
+    type        = string
+    description = "The flavor for the instance"
+    default     = null
+  }
+  variable "volume_name" {
+    type        = string
+    description = "The volume name to assign to the device"
+    default     = null
+  }
+  variable "volume_size" {
+    type        = string
+    description = "The volume size to assign to the device"
+    default     = null
+  }
+  variable "volume_type" {
+    type        = string
+    description = "The volume type to assign to the device"
+    default     = null
+  }
+  variable "volume_device_path" {
+    type        = string
+    description = "The path to the device associated with the volume"
+    default     = null
+  }
+  variable "enable_online_resize" {
+    type        = bool
+    description = "Enable volume to be resized on the fly or not"
+    default     = null
+  }
+  variable "key_pair_name" {
+    type        = string
+    description = "The name of the pre-defined key-pair to use for logging in to the nodes"
+    default     = null
+  }
+  variable "ssh_security_group_name" {
+    type        = string
+    description = "The name of the security group to allow ssh access"
+    default     = null
+  }
+Finally, proceed to initialise Terraform, plan and apply as we did above in the case of the base project.
+NB! In order to assign a publicly reachable IP address (i.e. a floating IP) to the above instance, you may either modify the above to include this to be done via code, or this may be done/managed via the Horizon dashboard too.

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