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Bastion Host

This Terraform module simplifies the creation of a secure bastion host for remote access to private instances within a network, with configurable options for security groups, instance type, and key pair authentication.

Goals

The main objective is to create a more logic data structure, achieved by combining and grouping related resources together in a complex object.

The structure of the module promotes reusability. It's intended to be a repeatable component, simplifying the process of building diverse workloads and platform accelerators consistently.

A primary goal is to utilize keys and values in the object that correspond to the REST API's structure. This enables us to carry out iterations, increasing its practical value as time goes on.

A last key goal is to separate logic from configuration in the module, thereby enhancing its scalability, ease of customization, and manageability.

Features

  • enables utilization of existing virtual networks
  • utilization of terratest for robust validation.

Requirements

Name Version
terraform ~> 1.0
azurerm ~> 3.61

Providers

Name Version
azurerm ~> 3.61

Resources

Name Type
azurerm_public_ip resource
azurerm_bastion_host resource
azurerm_subscription data source

Data Sources

Name Type
azurerm_subscription datasource

Inputs

Name Description Type Required
host describes bastion related configuration object yes
naming contains naming convention string yes
location default azure region tho be used string no
resourcegroup default resource group to be used string no
tags tags to be added to the resources map(string) no

Outputs

Name Description
host contains all bastion host related configuration
subscriptionId contains the current subscription id

Testing

As a prerequirement, please ensure that both go and terraform are properly installed on your system.

The Makefile includes two distinct variations of tests. The first one is designed to deploy different usage scenarios of the module. These tests are executed by specifying the TF_PATH environment variable, which determines the different usages located in the example directory.

To execute this test, input the command make test TF_PATH=default, substituting default with the specific usage you wish to test.

The second variation is known as a extended test. This one performs additional checks and can be executed without specifying any parameters, using the command make test_extended.

Both are designed to be executed locally and are also integrated into the github workflow.

Each of these tests contributes to the robustness and resilience of the module. They ensure the module performs consistently and accurately under different scenarios and configurations.

Notes

Using a dedicated module, we've developed a naming convention for resources that's based on specific regular expressions for each type, ensuring correct abbreviations and offering flexibility with multiple prefixes and suffixes

Full examples detailing all usages, along with integrations with dependency modules, are located in the examples directory

To integrate seamlessly with the enterprise scale's centrally managed private dns zones within a connectivity subscription, you can employ the private dns submodule, designed to work effectively with an aliased provider.

Authors

Module is maintained by these awesome contributors.

License

MIT Licensed. See LICENSE for full details.

References