source = "terraform-aws-modules / …"

}

dependencies {

path = ["..network"]

}

}

name = "…"

ami = "…"

instance_type = "t3.large"

Unified semantics for different providers (AWS, GCE, Yandex. Cloud and many others) configurations, which allows you to create a transcendental infrastructure, for example, permanently loaded services are located to save on their own capacities, and are variably loaded (for example, during the promotional period) in public clouds … Due to the fact that management is declarative and can be described by files (IaC, infrastructure as code), the creation of infrastructure can be added to the CI / CD pipeline (development, testing, delivery, everything is automatic and with version control). Without CI / CD, config file locking is supported to prevent concurrent editing when working together. the infrastructure is not created by a script, but is brought into conformity with the configuration, which is declarative and cannot contain logic, although it is possible to inject BASH scripts into it and use Conditions (term operator) for different environments.

Terraform will read all files in the current directory with a .tf extension in the Hachicort Configuraiton Language (HCL) format or .tf format . json in JSON format. Often, instead of one file, it is divided into several, at least two: the first containing the configuration, the second – private data in variables.

To demonstrate Terraform's capabilities, we will create a GitHub repository due to its ease of authorization and API. First, we get a token generated in the WEB interface: SettingsDeveloper sittings -> Personal access token -> Generate new token and setting permissions. We will not create anything, just check the connection:

(agile-aleph-203917) $ ls * .tf

main.tf variables.tf

$ cat variables.tf

variable "github_token" {

default = "630bc9696d0b2f4ce164b1cabb118eaaa1909838"

}

$ cat main.tf

provider "github" {

token = "$ {var.github_token}"

}

(agile-aleph-203917) $ ./terraform init

(agile-aleph-203917) $ ./terraform apply

Apply complete! Resources: 0 added, 0 changed, 0 destroyed.

Now, let's create a manager account Settings -> Organizations -> New organization -> Create organization. … Using: Terraform Repository API www.terraform.io/docs/providers/github/r/repository. html add a description of the repository to the config:

(agile-aleph-203917) $ cat main.tf

provider "github" {

token = "$ {var.github_token}"

}

resource "github_repository" "terraform_repo" {

name = "terraform-repo"

description = "my terraform repo"

auto_init = true

}

Now it remains to apply, look at the plan for creating a repository, agree with it:

(agile-aleph-203917) $ ./terraform apply

provider.github.organization

The GitHub organization name to manage.

Enter a value: essch2

An execution plan has been generated and is shown below.

Resource actions are indicated with the following symbols:

+ create

Terraform will perform the following actions:

+ github_repository.terraform_repo

id:

allow_merge_commit: "true"

allow_rebase_merge: "true"

allow_squash_merge: "true"

archived: "false"

auto_init: "true"

default_branch:

description: "my terraform repo"

etag:

full_name:

git_clone_url:

html _url:

http_clone_url:

name: "terraform-repo"

ssh_clone_url:

svn_url:

Plan: 1 to add, 0 to change, 0 to destroy.

Do you want to perform these actions?

Terraform will perform the actions described above.

Only 'yes' will be accepted to approve.

Enter a value: yes

github_repository.terraform_repo: Creating …