Provision a CockroachDB Cloud Cluster with Terraform

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Terraform is an infrastructure-as-code provisioning tool that uses configuration files to define application and network resources. You can provision CockroachDB Cloud clusters and cluster resources by using the CockroachDB Cloud Terraform provider in your Terraform configuration files.

This tutorial shows you how to provision a CockroachDB Cloud cluster using the CockroachDB Cloud Terraform provider.

Before you begin

Before you start this tutorial, you must

Create the Terraform configuration files

Terraform uses a infrastructure-as-code approach to managing resources. Terraform configuration files allow you to define resources declaratively and let Terraform manage their lifecycle.

In this tutorial, you will create a CockroachDB Serverless cluster with a spend limit of $0.

  1. In a terminal create a new directory and use wget to download the CockroachDB Serverless main.tf example file:

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    wget https://raw.githubusercontent.com/cockroachdb/terraform-provider-cockroach/main/examples/workflows/cockroach_serverless_cluster/main.tf
    
  2. In a text editor create a new file terraform.tfvars with the following settings:

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    cluster_name = "{cluster name}"
    sql_user_name = "{SQL user name}"
    sql_user_password = "{SQL user password}"
    

    Where:

    • {cluster name} is the name of the cluster you want to create.
    • {SQL user name} is the name of the SQL user you want to create.
    • {SQL user password} is the password for the SQL user you want to create.

    For example, the following terraform.tfvars file creates a CockroachDB Serverless with a maxroach SQL user.

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    cluster_name = "dim-dog"
    sql_user_name = "maxroach"
    sql_user_password = "NotAGoodPassword"
    
  3. Create an environment variable named COCKROACH_API_KEY. Copy the API key from the CockroachDB Cloud console and create the COCKROACH_API_KEY environment variable:

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    export COCKROACH_API_KEY={API key}
    

    Where {API key} is the API key you copied from the CockroachDB Cloud Console.

In this tutorial, you will create a CockroachDB Dedicated cluster

  1. In a terminal create a new directory and use wget to download the CockroachDB Dedicated main.tf example file:

    icon/buttons/copy
    wget https://raw.githubusercontent.com/cockroachdb/terraform-provider-cockroach/main/examples/workflows/cockroach_dedicated_cluster/main.tf
    
  2. In a text editor create a new file terraform.tfvars with the following settings:

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    cluster_name = "{cluster name}"
    sql_user_name = "{SQL user name}"
    sql_user_password = "{SQL user password}"
    cloud_provider = "{cloud provider}"
    cloud_provider_regions = ["{cloud provider region}"]
    cluster_node_count = {number of nodes}
    storage_gib = {storage in GiB}
    machine_type = "{cloud provider machine type}"
    allow_list_name = "{allow list name}"
    cidr_ip = "{allow list CIDR IP}"
    cidr_mask = {allow list CIDR mask}
    

    Where:

    • {cluster name} is the name of the cluster you want to create.
    • {SQL user name} is the name of the SQL user you want to create.
    • {SQL user password} is the password for the SQL user you want to create.
    • {cloud provider} is the cloud infrastructure provider. Possible values are GCP or AWS.
    • {cloud provider regions} is the region code or codes for the cloud infrastructure provider. For multi-region clusters, separate each region with a comma.
    • {number of nodes} is the number of nodes in each region. Cockroach Labs recommends at least 3 nodes per region, and the same number of nodes in each region for multi-region clusters.
    • {storage in GiB} is the amount of storage specified in GiB.
    • {cloud provider machine type} is the machine type for the cloud infrastructure provider.
    • {allow list name} is the name for the IP allow list. Use a descriptive name to identify the IP allow list.
    • {allow list CIDR IP} is the Classless Inter-Domain Routing (CIDR) IP address base.
    • {allow list CIDR mask} is the CIDR mask.

    For example, the following terraform.tfvars file creates a single region 3 node CockroachDB Dedicated cluster and sets an IP allowlist for a single IP address.

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    cluster_name = "dim-dog"
    sql_user_name = "maxroach"
    sql_user_password = "NotAGoodPassword"
    cloud_provider = "GCP"
    cloud_provider_regions = ["us-west2"]
    cluster_node_count = 3
    storage_gib = 15
    machine_type = "n1-standard-2"
    allow_list_name = "Max's home network"
    cidr_ip = "1.2.3.4"
    cidr_mask = 32
    
  3. Create an environment variable named COCKROACH_API_KEY. Copy the API key from the CockroachDB Cloud console and create the COCKROACH_API_KEY environment variable:

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    export COCKROACH_API_KEY={API key}
    

    Where {API key} is the API key you copied from the CockroachDB Cloud Console.

Provision the cluster

  1. Initialize the provider:

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    terraform init -upgrade
    

    This reads the main.tf configuration file and uses the terraform.tfvars file for settings specific to your cluster. The -upgrade flag ensures you are using the latest version of the provider.

  2. Create the Terraform plan. This shows the actions the provider will take, but won't perform them:

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    terraform plan
    
  3. Create the cluster:

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    terraform apply
    

    Enter yes when prompted to apply the plan and create the cluster.

You will see output similar to the following:

Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  # cockroach_cluster.example will be created
  + resource "cockroach_cluster" "example" {
      + account_id        = (known after apply)
      + cloud_provider    = "GCP"
      + cockroach_version = (known after apply)
      + creator_id        = (known after apply)
      + id                = (known after apply)
      + name              = "dim-dog"
      + operation_status  = (known after apply)
      + plan              = (known after apply)
      + regions           = [
          + {
              + name       = "us-central1"
              + node_count = (known after apply)
              + sql_dns    = (known after apply)
              + ui_dns     = (known after apply)
            },
        ]
      + serverless        = {
          + routing_id  = (known after apply)
          + spend_limit = 0
        }
      + state             = (known after apply)
    }

  # cockroach_sql_user.example will be created
  + resource "cockroach_sql_user" "example" {
      + cluster_id = (known after apply)
      + id         = (known after apply)
      + name       = "maxroach"
      + password   = (sensitive value)
    }

Plan: 2 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

cockroach_cluster.example: Creating...
cockroach_cluster.example: Creation complete after 5s [id=1aaae1f8-19e2-4653-ba62-db16de2a84b9]
cockroach_sql_user.example: Creating...
cockroach_sql_user.example: Creation complete after 2s [id=1aaae1f8-19e2-4653-ba62-db16de2a84b9:maxroach]

Apply complete! Resources: 2 added, 0 changed, 0 destroyed.
Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  + create
 <= read (data resources)

Terraform will perform the following actions:

  # data.cockroach_cluster.example will be read during apply
  # (config refers to values not yet known)
 <= data "cockroach_cluster" "example" {
      + account_id        = (known after apply)
      + cloud_provider    = (known after apply)
      + cockroach_version = (known after apply)
      + creator_id        = (known after apply)
      + dedicated         = {
          + disk_iops        = (known after apply)
          + machine_type     = (known after apply)
          + memory_gib       = (known after apply)
          + num_virtual_cpus = (known after apply)
          + storage_gib      = (known after apply)
        } -> (known after apply)
      + id                = (known after apply)
      + name              = (known after apply)
      + operation_status  = (known after apply)
      + plan              = (known after apply)
      + regions           = [
        ] -> (known after apply)
      + serverless        = {
          + routing_id  = (known after apply)
          + spend_limit = (known after apply)
        } -> (known after apply)
      + state             = (known after apply)
    }

  # cockroach_allow_list.example will be created
  + resource "cockroach_allow_list" "example" {
      + cidr_ip    = "1.2.3.4"
      + cidr_mask  = 32
      + cluster_id = (known after apply)
      + id         = (known after apply)
      + name       = "Max's home network"
      + sql        = true
      + ui         = true
    }

  # cockroach_cluster.example will be created
  + resource "cockroach_cluster" "example" {
      + account_id        = (known after apply)
      + cloud_provider    = "GCP"
      + cockroach_version = "v22.2"
      + creator_id        = (known after apply)
      + dedicated         = {
          + disk_iops        = (known after apply)
          + machine_type     = "n1-standard-2"
          + memory_gib       = (known after apply)
          + num_virtual_cpus = (known after apply)
          + storage_gib      = 15
        }
      + id                = (known after apply)
      + name              = "dim-dog"
      + operation_status  = (known after apply)
      + plan              = (known after apply)
      + regions           = [
          + {
              + name       = "us-west2"
              + node_count = 3
              + sql_dns    = (known after apply)
              + ui_dns     = (known after apply)
            },
        ]
      + state             = (known after apply)
    }

  # cockroach_sql_user.example will be created
  + resource "cockroach_sql_user" "example" {
      + cluster_id = (known after apply)
      + id         = (known after apply)
      + name       = "maxroach"
      + password   = (sensitive value)
    }

Plan: 3 to add, 0 to change, 0 to destroy.

Changes to Outputs:
  + cluster = {
      + account_id        = (known after apply)
      + cloud_provider    = (known after apply)
      + cockroach_version = (known after apply)
      + creator_id        = (known after apply)
      + dedicated         = (known after apply)
      + id                = (known after apply)
      + name              = (known after apply)
      + operation_status  = (known after apply)
      + plan              = (known after apply)
      + regions           = (known after apply)
      + serverless        = (known after apply)
      + state             = (known after apply)
    }

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

cockroach_cluster.example: Creating...
...
cockroach_cluster.example: Still creating... [22m10s elapsed]
cockroach_cluster.example: Creation complete after 22m14s [id=2697e5de-73e6-4d67-a4b4-2b2075dc2dfe]
data.cockroach_cluster.example: Reading...
cockroach_sql_user.example: Creating...
cockroach_allow_list.example: Creating...
data.cockroach_cluster.example: Read complete after 0s [id=2697e5de-73e6-4d67-a4b4-2b2075dc2dfe]
cockroach_allow_list.example: Creation complete after 0s [id=2697e5de-73e6-4d67-a4b4-2b2075dc2dfe:76.14.55.13/32]
cockroach_sql_user.example: Creation complete after 2s [id=2697e5de-73e6-4d67-a4b4-2b2075dc2dfe:maxroach]

Apply complete! Resources: 3 added, 0 changed, 0 destroyed.

Outputs:

cluster = {
  "account_id" = tostring(null)
  "cloud_provider" = "GCP"
  "cockroach_version" = "v22.2.0"
  "creator_id" = tostring(null)
  "dedicated" = {
    "disk_iops" = 450
    "machine_type" = "n1-standard-2"
    "memory_gib" = 7.5
    "num_virtual_cpus" = 2
    "storage_gib" = 15
  }
  "id" = "2697e5de-73e6-4d67-a4b4-2b2075dc2dfe"
  "name" = "dim-dog"
  "operation_status" = "CLUSTER_STATUS_UNSPECIFIED"
  "plan" = "DEDICATED"
  "regions" = tolist([
    {
      "name" = "us-west2"
      "node_count" = 3
      "sql_dns" = "dim-dog-gwq.gcp-us-west2.cockroachlabs.cloud"
      "ui_dns" = "admin-dim-dog-gwq.gcp-us-west2.cockroachlabs.cloud"
    },
  ])
  "serverless" = null /* object */
  "state" = "CREATED"
}

Get information about your cluster

The terraform show command shows detailed information of your cluster resources.

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terraform show

This will show the following output:

# cockroach_cluster.example:
resource "cockroach_cluster" "example" {
    cloud_provider    = "GCP"
    cockroach_version = "v22.1"
    creator_id        = "98e75f0a-072b-44dc-95d2-cc36cd425cab"
    id                = "1aaae1f8-19e2-4653-ba62-db16de2a84b9"
    name              = "dim-dog"
    operation_status  = "CLUSTER_STATUS_UNSPECIFIED"
    plan              = "SERVERLESS"
    regions           = [
        # (1 unchanged element hidden)
    ]
    serverless        = {
        routing_id  = "dim-dog-6821"
        spend_limit = 0
    }
    state             = "CREATED"
}

# cockroach_sql_user.example:
resource "cockroach_sql_user" "example" {
    cluster_id = "1aaae1f8-19e2-4653-ba62-db16de2a84b9"
    id         = "1aaae1f8-19e2-4653-ba62-db16de2a84b9:maxroach"
    name       = "maxroach"
    password   = (sensitive value)
}
# cockroach_allow_list.example:
resource "cockroach_allow_list" "example" {
    cidr_ip    = "1.2.3.4"
    cidr_mask  = 32
    cluster_id = "2697e5de-73e6-4d67-a4b4-2b2075dc2dfe"
    id         = "2697e5de-73e6-4d67-a4b4-2b2075dc2dfe:76.14.55.13/32"
    name       = "Max's home network"
    sql        = true
    ui         = true
}

# cockroach_cluster.example:
resource "cockroach_cluster" "example" {
    account_id        = "crl-prod-gwq"
    cloud_provider    = "GCP"
    cockroach_version = "v22.2"
    creator_id        = "98e75f0a-072b-44dc-95d2-cc36cd425cab"
    dedicated         = {
        disk_iops        = 450
        machine_type     = "n1-standard-2"
        memory_gib       = 7.5
        num_virtual_cpus = 2
        storage_gib      = 15
    }
    id                = "2697e5de-73e6-4d67-a4b4-2b2075dc2dfe"
    name              = "dim-dog"
    operation_status  = "CLUSTER_STATUS_UNSPECIFIED"
    plan              = "DEDICATED"
    regions           = [
        # (1 unchanged element hidden)
    ]
    state             = "CREATED"
}

# cockroach_sql_user.example:
resource "cockroach_sql_user" "example" {
    cluster_id = "2697e5de-73e6-4d67-a4b4-2b2075dc2dfe"
    id         = "2697e5de-73e6-4d67-a4b4-2b2075dc2dfe:maxroach"
    name       = "maxroach"
    password   = (sensitive value)
}

# data.cockroach_cluster.example:
data "cockroach_cluster" "example" {
    cloud_provider    = "GCP"
    cockroach_version = "v22.2.0"
    dedicated         = {
        disk_iops        = 450
        machine_type     = "n1-standard-2"
        memory_gib       = 7.5
        num_virtual_cpus = 2
        storage_gib      = 15
    }
    id                = "2697e5de-73e6-4d67-a4b4-2b2075dc2dfe"
    name              = "dim-dog"
    operation_status  = "CLUSTER_STATUS_UNSPECIFIED"
    plan              = "DEDICATED"
    regions           = [
        # (1 unchanged element hidden)
    ]
    state             = "CREATED"
}


Outputs:

cluster = {
    account_id        = null
    cloud_provider    = "GCP"
    cockroach_version = "v22.2.0"
    creator_id        = null
    dedicated         = {
        disk_iops        = 450
        machine_type     = "n1-standard-2"
        memory_gib       = 7.5
        num_virtual_cpus = 2
        storage_gib      = 15
    }
    id                = "2697e5de-73e6-4d67-a4b4-2b2075dc2dfe"
    name              = "dim-dog"
    operation_status  = "CLUSTER_STATUS_UNSPECIFIED"
    plan              = "DEDICATED"
    regions           = [
        {
            name       = "us-west2"
            node_count = 3
            sql_dns    = "dim-dog-gwq.gcp-us-west2.cockroachlabs.cloud"
            ui_dns     = "admin-dim-dog-gwq.gcp-us-west2.cockroachlabs.cloud"
        },
    ]
    serverless        = null
    state             = "CREATED"
}

Delete the cluster

If you want to delete the cluster, run the following command:

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terraform destroy

Enter yes when prompted to delete the cluster.

You will see output similar to the following:

cockroach_cluster.example: Refreshing state... [id=1aaae1f8-19e2-4653-ba62-db16de2a84b9]
cockroach_sql_user.example: Refreshing state... [id=1aaae1f8-19e2-4653-ba62-db16de2a84b9:maxroach]

Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  - destroy

Terraform will perform the following actions:

  # cockroach_cluster.example will be destroyed
...
Plan: 0 to add, 0 to change, 2 to destroy.

Do you really want to destroy all resources?
  Terraform will destroy all your managed infrastructure, as shown above.
  There is no undo. Only 'yes' will be accepted to confirm.

  Enter a value: yes

cockroach_sql_user.example: Destroying... [id=1aaae1f8-19e2-4653-ba62-db16de2a84b9:maxroach]
cockroach_sql_user.example: Destruction complete after 1s
cockroach_cluster.example: Destroying... [id=1aaae1f8-19e2-4653-ba62-db16de2a84b9]
cockroach_cluster.example: Destruction complete after 1s

Destroy complete! Resources: 2 destroyed.
cockroach_cluster.example: Refreshing state... [id=2697e5de-73e6-4d67-a4b4-2b2075dc2dfe]
cockroach_sql_user.example: Refreshing state... [id=2697e5de-73e6-4d67-a4b4-2b2075dc2dfe:maxroach]
cockroach_allow_list.example: Refreshing state... [id=2697e5de-73e6-4d67-a4b4-2b2075dc2dfe:76.14.55.13/32]
data.cockroach_cluster.example: Reading...
data.cockroach_cluster.example: Read complete after 0s [id=2697e5de-73e6-4d67-a4b4-2b2075dc2dfe]

Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  - destroy

Terraform will perform the following actions:

  # cockroach_allow_list.example will be destroyed
...

Plan: 0 to add, 0 to change, 3 to destroy.

...

Do you really want to destroy all resources?
  Terraform will destroy all your managed infrastructure, as shown above.
  There is no undo. Only 'yes' will be accepted to confirm.

  Enter a value: yes

cockroach_sql_user.example: Destroying... [id=2697e5de-73e6-4d67-a4b4-2b2075dc2dfe:maxroach]
cockroach_allow_list.example: Destroying... [id=2697e5de-73e6-4d67-a4b4-2b2075dc2dfe:76.14.55.13/32]
cockroach_allow_list.example: Destruction complete after 1s
cockroach_sql_user.example: Destruction complete after 3s
cockroach_cluster.example: Destroying... [id=2697e5de-73e6-4d67-a4b4-2b2075dc2dfe]
cockroach_cluster.example: Destruction complete after 2s

Destroy complete! Resources: 3 destroyed.

Next steps

The CockroachDB Cloud Terraform provider reference docs provide detailed information on the resources you can manage using Terraform.


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