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terraform-infrastructure-template

Terraform template repository for infrastructures projects

How to use this template

Change the template name

In this template we use devopslab or dvopla to define ours project, but you need to change all the information, to be complaint with your project

Inside:

  • src\
    • .env\
      • terraform.tfvars

Change this informations

# general
env_short      = "d"
env            = "dev"
prefix         = "dvopla"
location       = "northeurope"
location_short = "neu"

tags = {
  CreatedBy   = "Terraform"
  Environment = "DEV"
  Owner       = "DevOps"
  Source      = "https://github.com/pagopa/devopslab-infra"
  CostCenter  = "TS310 - PAGAMENTI & SERVIZI"
}

And change all the occurency of devopslab of his prefix with yours prefix.

In the folders core, pillar and k8s

Change the occurrence devopslab with the name of your project or the name that is better for you.

Terraform folders name convention

Inside the folder src we have this folders, that contains the terraform files. Here you can find the meaning of the folders

  • pillar: contains all the basic infrastructure that must be created before to support other layers, and cannot be destroyed every time.
    • for example we can find the dns, vnet or monitoring
  • core: here you can find all the business infrastructure objects, use data to load the objects created in pillar.
  • k8s: here you can find the setup of your cluster k8s/aks
    • for example ingress, secrets, rbac or service accounts

Requirements

1. terraform

In order to manage the suitable version of terraform it is strongly recommended to install the following tool:

  • tfenv: Terraform version manager inspired by rbenv.

Once these tools have been installed, install the terraform version shown in:

  • .terraform-version

After installation install terraform:

tfenv install

Terraform modules

As PagoPA we build our standard Terraform modules, check available modules:

Apply changes

To apply changes follow the standard terraform lifecycle once the code in this repository has been changed:

terraform.sh init [dev|uat|prod]

terraform.sh plan [dev|uat|prod]

terraform.sh apply [dev|uat|prod]

Terraform lock.hcl

We have both developers who work with your Terraform configuration on their Linux, macOS or Windows workstations and automated systems that apply the configuration while running on Linux. https://www.terraform.io/docs/cli/commands/providers/lock.html#specifying-target-platforms

So we need to specify this in terraform lock providers:

terraform init

rm .terraform.lock.hcl

terraform providers lock \
  -platform=windows_amd64 \
  -platform=darwin_amd64 \
  -platform=darwin_arm64 \
  -platform=linux_amd64

Precommit checks

Check your code before commit.

https://github.com/antonbabenko/pre-commit-terraform#how-to-install

pre-commit run -a

Install the pre-commit hook globally

DIR=~/.git-template
git config --global init.templateDir ${DIR}
pre-commit init-templatedir -t pre-commit ${DIR}

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