Terraform Kayobe Multinode

This Terraform configuration deploys a requested amount of Instances on an OpenStack cloud, to be used as a Multinode Kayobe test environment.

Usage

These instructions show how to use this Terraform configuration manually. They assume you are running an Ubuntu host that will be used to run Terraform. The machine should have network access to the environment that will be created by this configuration.

Install Terraform:

wget -qO - terraform.gpg https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/terraform-archive-keyring.gpg
sudo echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/terraform-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/terraform.list
sudo apt update
sudo apt install terraform

Clone and initialise the Kayobe config:

git clone https://github.com/stackhpc/terraform-kayobe-multinode
cd terraform-kayobe-multinode

Initialise Terraform:

terraform init

Generate an SSH keypair:

ssh-keygen -f id_rsa -N ''

Create an OpenStack clouds.yaml file with your credentials to access an OpenStack cloud. Alternatively, download one from Horizon.

cat << EOF > clouds.yaml
---
clouds:
  sms-lab:
    auth:
      auth_url: https://api.sms-lab.cloud:5000
      username: <username>
      project_name: <project>
      domain_name: default
    interface: public
EOF

Export environment variables to use the correct cloud and provide a password:

export OS_CLOUD=sms-lab
read -p OS_PASSWORD -s OS_PASSWORD
export OS_PASSWORD

Generate Terraform variables:

cat << EOF > terraform.tfvars
ssh_private_key = "id_rsa"
ssh_public_key = "id_rsa.pub"
seed_vm_name = "kayobe-seed"
seed_vm_image = "CentOS-stream8"
multinode_keypair = "multinode_keypair"
seed_vm_flavor = "general.v1.tiny"
multinode_vm_network = "stackhpc-ipv4-geneve"
multinode_vm_subnet = "stackhpc-ipv4-geneve-subnet"
multinode_image = "CentOS-stream8"
multinode_flavor = "general.v1.tiny"
EOF

Generate a plan:

terraform plan

Apply the changes:

terraform apply -auto-approve

You should have requested number of resources spawned on Openstack, and ansible_inventory file produced as output for Kayobe.