Terraform Openstack

This will create:

• dmznet and dmzsubnet

• borderrouter that connects dmznet to bright-external-flat-externalnet

• a floating ip address, and an instance coming off of dmznet

• clusternet off of dmznet instance

• clustersubnet will connect instance to ood through ohpc and download software

Make a new directory for Terraform:

• $mkdir terraform-first-instance

Install Terraform:

Install terraform from your systems package manager or directly from HashiCorp. Terraform is a single binary so it's easy to maintain the latest release version from the distributed zip files.

On a Mac (using brew package manager):

• $brew install terraform

On a linux box (using the upstream package installed to personal ~/bin already in the $PATH):

wget https://releases.hashicorp.com/terraform/0.12.3/terraform_0.12.3_linux_amd64.zip
unzip terraform_0.12.3_linux_amd64.zip -d ~/bin

Unzip the file and make a path to your new directory using:

• $export TERRAFORM_DIR="$(pwd)/terraform-first-instance

• $cp $HOME/Downloads/terraform_0.6.16_linux_amd64/terraform $TERRAFORM_DIR

Create a new application credintial in Openstack:

• In Openstack, go to Identity -> Application Credentials

• Click "Create Application Credential"

• Name the credential, add a description, and check the box making it unrestricted (Leave the rest blank. It is important not to add an expiration date.)

• Download the credentials as an RC file.

• Save credentials RC file in your terraform-first-instance directory.

Clone this repo into your terraform-first-instance directory using:

• $git clone --recursive https://gitlab.rc.uab.edu/rrand11/terraform-openstack.git

Source the RC file and initialize terraform:

• $source CREDENTIALRCFILENAME

• $cd terraform-openstack

• $terraform init

Write Terraform Plan to your terraform-first-instance directory and run that plan:

• $terraform plan -out $HOME/terraform-first-instance/terraform-plan.tf

(Note) $terraform plan -out writes the plan to a file and then terraform apply runs that plan.

• $terraform apply "$HOME/terraform-first-instance/terraform-plan.tf"

There's a target parameter that will let you specify just one module as defined in the root main file. Run it via plan like so:

• $terraform plan -out $HOME/terraform-first-instance/name-of-plan.tf -target=module.name-of-module-to-run

(Note) You can also target multiple modules.

• $terraform plan -out $HOME/terraform-first-instance/name-of-plan.tf -target=module.name-of-module -target=module.name-of-other-module

Destroy Terraform Instance:

• $terraform destroy