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Terraform

Install virtual machines using Terraform and libvirt

Parameters

  • domain: Domain name for the virtual machine (Default: example.com)
  • master_count: Number of master nodes to create (Default: 1)
  • worker_count: Number of worker nodes to create (Default: 3)
  • installation_image: Image used to install the nodes (Default: https://dl.rockylinux.org/pub/rocky/9/images/x86_64/Rocky-9-GenericCloud.latest.x86_64.qcow2)
  • user: Dictionary with user information for the default user which is created on all nodes
    • name: User name (Default: Username from user who executes the playbook)
    • gecos: Gecos information (Default: Gecos from user who executes the playbook)
    • group: Group name (Default: same as name)
    • ssh_pub_key: Public key for the user (Default: $HOME/.ssh/id_rsa.pub from user who executes the playbook)
  • tf_binary_path: Path to the terraform binary (Default: False)
  • debug_terraform: Enable or disable debugging the role (Default: false)

Dependencies

Terraform internals

The Ansible module terraform is used to install the virtual infrastructure together with the libvirt provider for Terraform. The Terraform state is saved in the directory mosibi-kubernetes/roles/infrastructure/terraform/tf-data.

Remove the installed virtual systems

If you need to remove the virtual infrastructure created with this Ansible role, change to the Terraform state directory (mosibi-kubernetes/roles/infrastructure/terraform/tf-data) and execute the following command, with the right values for the variables. The installation_image variable must be set, but is not used during removal, so the /dev/null value is okay.

  terraform destroy \
    -auto-approve \
    -var 'domain=example.com' \
    -var 'installation_image=/dev/null' \
    -var 'worker_count=4' \
    -var 'master_count=1'