Ansible Role: serdigital64.infrastructure.infra_terraform¶

Purpose¶

Manage provisioning of the Terraform tool.

Supported features in the current version:

• Create directory structure for persistent and ephemeral data
• Deploy application. Packages are defined in the variable infra_terraform_profiles.
• Create initial configuration
• Create repositories for projects
• Provision projects (copy from source to state directory)
• Run terraform against projects

The module provides a directory structure for facilitating the usage of infrastructure-as-code with source-code-management tools:

• Separates ephemeral from persistent data
  • /opt/terraform/
  • /var/opt/terraform/
• Implements the usage of projects: repository for storing terraform scripts:
  • /opt/terraform/src/<PROJECT>: terraform source scripts
  • /var/opt/terraform/states/<PROJECT>: working directory where terraform is run (state, logs, etc.)

The infra_terraform Ansible-Role is part of the A:Platform64 project and is available in the infrastructure Ansible-Collection.

Usage¶

The following example is an Ansible Playbook that includes all the supported features:

use this link if viewing the doc on github

---
- name: "Infrastructure / Terraform / Usage example"
  hosts: "localhost"
  gather_facts: true

  tasks:
    - name: "Example: Install Terraform, create dedicated user, create default project repositories"
      vars:
        infra_terraform:
          resolve_prereq: true
          prepare: true
          deploy: true
          setup: true
          provision: true
        infra_terraform_projects:
          - name: "default"
        infra_terraform_paths:
          root: "/opt/terraform"
          etc: "/opt/terraform/etc"
          src: "/opt/terraform/src"
          var: "/var/opt/terraform"
        infra_terraform_users:
          terraform:
            name: "terraform"
            group: "terraform"
            home: "/home/terraform"
      ansible.builtin.include_role:
        name: "serdigital64.infrastructure.infra_terraform"
...

The playbook can be run by executing:

# Set ANSIBLE_COLLECTIONS_PATHS to the default install location. Change as needed.
ANSIBLE_COLLECTIONS_PATHS="${HOME}/.ansible/collections"
ansible-playbook "${ANSIBLE_COLLECTIONS_PATHS}/ansible_collections/serdigital64/infrastructure/playbooks/infra_terraform.yml"

Role Parameters¶

Actions¶

• Use action-parameters to control what tasks are enabled for the role to execute.
• Parameters should be declared as task level vars as they are intented to be dynamic.

infra_terraform:
  resolve_prereq:
  prepare:
  deploy:
  setup:
  control:
  provision:

End State¶

• Use end-state parameters to define the target state after role execution.
• Parameters should be declared in host_vars or group_vars as they are intended to be permanent.

infra_terraform_application:
  name:
  type:
  version:
  installed:
infra_terraform_paths:
  root:
  etc:
  src:
  var:
infra_terraform_users:
  terraform:
    name:
    group:
    home:
infra_terraform_projects:
  - name:

Deployment¶

OS Compatibility¶

The operating system compatibility list is defined in the variable: infra_terraform_platforms

Dependencies¶

• Ansible Collections:
  • serdigital64.backup
    • bkp_archive
  • serdigital64.system
    • sys_package
    • sys_repository
    • sys_user

Prerequisites¶

The Ansible engine must be already installed and configured for privileged access and remote execution.

In addition the following prerequisites can be automatically solved when running the playbook by setting the role action: resolve_prereq: true

• Package manager for the target application is installed and enabled.

Installation Procedure¶

Manually install Ansible Collections from the Ansible Galaxy repository:

ansible-galaxy collection install --upgrade serdigital64.infrastructure

Automatic installation is also available by deploying A:Platform64

Contributing¶

Help on implementing new features and maintaining the code base is welcomed.

Please see the guidelines for further details.

Author¶

• SerDigital64

License¶

Apache-2.0