Terraform YC Cost Estimation

Resource cost estimation based on the Terraform plan for Yandex Cloud.

List of supported resources:

yandex_compute_instance
yandex_compute_instance_group
yandex_compute_disk
yandex_compute_filesystem
yandex_kubernetes_cluster
yandex_kubernetes_node_group
yandex_mdb_mysql_cluster
yandex_mdb_postgresql_cluster
yandex_mdb_clickhouse_cluster
yandex_mdb_greenplum_cluster
yandex_mdb_kafka_cluster
yandex_mdb_redis_cluster
yandex_mdb_opensearch_cluster
yandex_ydb_database_dedicated
yandex_vpc_address

Only ru-central Yandex Cloud installation is currently supported. The output is in RUB currency.

Demo

Prerequisites:

• jq
• curl
• Terraform plan

Generate JSON file from Terraform plan:

terraform plan -out=plan.tfplan > /dev/null && terraform show -json plan.tfplan > plan.json

Send the plan to get cost estimation results:

curl -H "Content-Type: application/json" "https://<API_GW_ADDRESS>" -d @plan.json | jq

Result should look like this:

{
  "hourly": 441.69,
  "monthly": 328619.71,
  "currency": "RUB"
}

You can also get the full results like this:

curl -H "Content-Type: application/json" "https://<API_GW_ADDRESS>?full=true" -d @plan.json | jq

Which should look like this:

{
  "hourly": 514.58,
  "monthly": 382844.5,
  "currency": "RUB",
  "usage": [
    {
      "SKU": "dn27ajm6m8mnfcshbi61",
      "Description": "Fast network storage (SSD)",
      "Amount": 10,
      "Cost(RUB)": "0.17",
      "Unit": "gbyte*hour",
      "Resource Name": "vm-disk-1",
      "Resource Type": "yandex_compute_disk"
    },
    {
      "SKU": "dn27ajm6m8mnfcshbi61",
      "Description": "Fast network storage (SSD)",
      "Amount": 100,
      "Cost(RUB)": "1.65",
      "Unit": "gbyte*hour",
      "Resource Name": "default",
      "Resource Type": "yandex_compute_filesystem"
    },
    ...
}

Deployment

SKU

For the script to work you need to get SKU data like this:

cd functions
python get-sku.py $(yc iam create-token)

This will generate sku.json required for the script to work.

You need YC CLI installed and initialized.

Local

You can run the script locally like this:

cd functions
python app.py /path/plan.json

This will print the cost estimations in table format.

Python tabulate package is required.

Cloud

You can deploy this code as a Cloud Function in Yandex Cloud using Terraform module provided.

• Create a service account with editor role in cloud folder (or with more specific roles, if needed).
• Create key.json file for service account authentication.
• Alternatively, use OAuth authentication in Terraform provider.
• Provide cloud_id and folder_id as required in variables.tf.

Deploy terraform module:

cd terraform
terraform init
terraform apply

This will create a Cloud Function and an API Gateway for access.

You can send the requests to the API Gateway FQDN, as described in the Demo section.