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Installing Terraform

...

  1. Create a directory and cd  to the directory

  2. Create a file named providers.tf with the following content. This will enable the OpenStack provider

    providers.tf

    Code Block
    # Define required providers
    terraform {
    required_version = ">= 0.14.0"
      required_providers {
        openstack = {
          source  = "terraform-provider-openstack/openstack"
          version = "~> 1.35.0"
        }
      }
    }
    
    provider "openstack" {}


  3. Declare the cloud information. It is recommended that you refer to Using the OpenStack Command -line Line Interface . You can also declare it in the providers.tf  However, you will have to declare your login details in plain text which is not secure.

  4. Run terraform init

    Code Block
    $ terraform init
    
    Initializing the backend...
    
    Initializing provider plugins...
    - Reusing previous version of terraform-provider-openstack/openstack from the dependency lock file
    - Using previously-installed terraform-provider-openstack/openstack v1.35.0
    
    Terraform has been successfully initialized!
    
    You may now begin working with Terraform. Try running "terraform plan" to see
    any changes that are required for your infrastructure. All Terraform commands
    should now work.
    
    If you ever set or change modules or backend configuration for Terraform,
    rerun this command to reinitialize your working directory. If you forget, other
    commands will detect it and remind you to do so if necessary.


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Here are some of the common providers

Provider

Function

openstack_compute_instance_v2

Create instance

openstack_networking_secgroup_v2

Create security group

openstack_networking_secgroup_rule_v2

Create security group rule

openstack_networking_network_v2

Create network

openstack_networking_floatingip_v2

Get a floating IP from allocated pool

openstack_compute_floatingip_associate_v2

Associate floating IP to instances

openstack_containerinfra_clustertemplate_v1

Create magnum cluster template

openstack_containerinfra_cluster_v1

Create magnum cluster

openstack_blockstorage_volume_v2

Create a new volume

openstack_compute_volume_attach_v2

Attach volume to instances

openstack_lb_loadbalancer_v2

Create Load balancer

openstack_lb_listener_v2

Create Load balancer listener

openstack_lb_pool_v2

Set method for load balance charge between instance (e.g. round robin)

openstack_lb_member_v2

Add instance to load balancer

openstack_lb_monitor_v2

Create health monitor for load balancer