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Infrastructure as Code - An intro - Part 5 - Using Terraform

Av Chris Klug | Blogg | 3 november 2021

Infrastructure as Code - An intro - Part 5 - Using Terraform In this 5th entry in my IaC blog series, I want to talk about Terraform. Terraform is a bit different from ARM and Bicep, which I covered in the previous post, as it isn’t Azure specific. Instead, it enables the user to deploy resources not only to Azure, but also to a lot of other clouds/systems. This makes it a more flexible alternative that is very useful if you need to deploy a mix of resources, or potentially not target Azure at all. Note: At the time of writing, there were 1515 different providers available for use with Terraform. For an up-to-date list, have a look at https://registry.terraform.io/browse/providers What is Terraform Terraform is one of several products from HashiCorp. Most of them aim to help out with cloud native application development. In Terraform, resources are defined using the HashiCorp Configuration Language (HCL). By using this “neutral” language and depend on separate providers for resource provisioning and management, it can be used to target a very wide set of systems and clouds. And by making the provider implementation open for anyone to implement, it allows all kinds of vendors to provide Terraform users with custom functionality to target their specific environment. In the case of Azure, the Terraform provider is built on top of the Go SDK for Azure. This unfortunately means that there is often a delay between new features being released and Terraform offering support for them. The reason for this is that when a new feature is made available in the Azure API, the Go SDK must add support for it before someone can go ahead and add the feature to the Terraform provider. In a lot of cases, it isn’t a problem if you have to wait for a new feature for a few weeks, but I do find it worth mentioning if you are currently evaluating what IaC tool you should use.
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