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使用 Cloud API 的 Terraform 示例

本文档介绍如何使用 terraform 通过 API 创建/删除集群

问题​

如何使用 API 管理 ClickHouse Cloud 上的集群？

答案​

我们将使用 Terraform 配置我们的基础设施和 ClickHouse Provider

步骤

1). 在 Cloud 上创建一个 API Key。请按照这里的文档操作 - https://clickhouse.ac.cn/docs/cloud/manage/openapi

将凭据保存到本地。

2). 使用以下方法安装 Terraform - https://developer.hashicorp.org.cn/terraform/tutorials/aws-get-started/install-cli

如果您使用 Mac，可以使用 Homebrew 包管理器。

3). 在您喜欢的任何地方创建一个目录

mkdir test
➜  test pwd
/Users/jaijhala/Desktop/terraform/test

4). 创建 2 个文件：main.tf 和 secret.tfvars

复制以下内容

main.tf 文件如下

terraform {
 required_providers {
   clickhouse = {
     source = "ClickHouse/clickhouse"
     version = "0.0.2"
   }
 }
}

variable "organization_id" {
  type = string
}

variable "token_key" {
  type = string
}

variable "token_secret" {
  type = string
}

provider clickhouse {
  environment 	= "production"
  organization_id = var.organization_id
  token_key   	= var.token_key
  token_secret	= var.token_secret
}


variable "service_password" {
  type = string
  sensitive   = true
}

resource "clickhouse_service" "service123" {
  name       	= "jai-terraform"
  cloud_provider = "aws"
  region     	= "us-east-2"
  tier       	= "development"
  idle_scaling   = true
  password  = var.service_password
  ip_access = [
	{
    	source  	= "0.0.0.0/0"
    	description = "Anywhere"
	}
  ]
}

output "CLICKHOUSE_HOST" {
  value = clickhouse_service.service123.endpoints.0.host
}

您可以在上面的资源部分替换您自己的参数，例如服务名称、区域等。

secret.tfvars 是您将放置之前下载的所有 API Key 相关信息的的地方。这个文件的想法是所有您的秘密凭据都将从主配置文件中隐藏。

它会类似于这样（替换这些参数）

organization_id = "e957a5f7-4qe3-4b05-ad5a-d02b2dcd0593"
token_key = "QWhhkMeytqQruTeKg"
token_secret = "4b1dNmjWdLUno9lXxmKvSUcPP62jvn7irkuZPbY"
service_password = "password123!"

5). 从该目录运行 terraform init

预期输出

Initializing the backend...

Initializing provider plugins...
- Finding clickhouse/clickhouse versions matching "0.0.2"...
- Installing clickhouse/clickhouse v0.0.2...
- Installed clickhouse/clickhouse v0.0.2 (self-signed, key ID D7089EE5C6A92ED1)

Partner and community providers are signed by their developers.
If you'd like to know more about provider signing, you can read about it here:
https://www.terraform.io/docs/cli/plugins/signing.html

Terraform has created a lock file .terraform.lock.hcl to record the provider
selections it made above. Include this file in your version control repository
so that Terraform can guarantee to make the same selections by default when
you run "terraform init" in the future.

Terraform has been successfully initialized!

You may now begin working with Terraform. Try running "terraform plan" to see
any changes that are required for your infrastructure. All Terraform commands
should now work.

If you ever set or change modules or backend configuration for Terraform,
rerun this command to reinitialize your working directory. If you forget, other
commands will detect it and remind you to do so if necessary.

6). 运行 terraform apply -var-file=secret.tfvars 命令。

类似于这样

➜  test terraform apply -var-file=secret.tfvars

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:

  # clickhouse_service.service123 will be created
  + resource "clickhouse_service" "service123" {
      + cloud_provider = "aws"
      + endpoints      = (known after apply)
      + id             = (known after apply)
      + idle_scaling   = true
      + ip_access      = [
          + {
              + description = "Anywhere"
              + source      = "0.0.0.0/0"
            },
        ]
      + last_updated   = (known after apply)
      + name           = "jai-terraform"
      + password       = (sensitive value)
      + region         = "us-east-2"
      + tier           = "development"
    }

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

Changes to Outputs:
  + CLICKHOUSE_HOST = (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

输入 yes 并按 Enter 键

注意：请注意，上面显示 password = (sensitive value)。这是因为我们在 main.tf 文件中将密码设置为 sensitive = true。

7). 创建服务需要几分钟时间，但最终应该会启动，如下所示

  Enter a value: yes

clickhouse_service.service123: Creating...
clickhouse_service.service123: Still creating... [10s elapsed]
clickhouse_service.service123: Still creating... [20s elapsed]
clickhouse_service.service123: Still creating... [30s elapsed]
clickhouse_service.service123: Still creating... [40s elapsed]
clickhouse_service.service123: Still creating... [50s elapsed]
clickhouse_service.service123: Still creating... [1m0s elapsed]
clickhouse_service.service123: Still creating... [1m10s elapsed]
clickhouse_service.service123: Still creating... [1m20s elapsed]
clickhouse_service.service123: Still creating... [1m30s elapsed]
clickhouse_service.service123: Still creating... [1m40s elapsed]
clickhouse_service.service123: Creation complete after 1m41s [id=aa8d8d63-1878-4600-8470-630715af38ed]

Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

Outputs:

CLICKHOUSE_HOST = "h3ljlaqez6.us-east-2.aws.clickhouse.cloud"
➜  test

8). 检查 Cloud 控制台，您应该能够看到创建的服务。

9). 要清理/销毁服务，再次运行 terraform destroy -var-file=secret.tfvars

类似于这样

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:

  # clickhouse_service.service123 will be destroyed
  - resource "clickhouse_service" "service123" {
      - cloud_provider = "aws" -> null
      - ............

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

Changes to Outputs:
  - CLICKHOUSE_HOST = "h3ljlaqez6.us-east-2.aws.clickhouse.cloud" -> null

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:

输入 yes 并按 Enter 键

10).

clickhouse_service.service123: Destroying... [id=aa8d8d63-1878-4600-8470-630715af38ed]
clickhouse_service.service123: Still destroying... [id=aa8d8d63-1878-4600-8470-630715af38ed, 10s elapsed]
clickhouse_service.service123: Still destroying... [id=aa8d8d63-1878-4600-8470-630715af38ed, 20s elapsed]
clickhouse_service.service123: Destruction complete after 27s

Destroy complete! Resources: 1 destroyed.

它应该从 Cloud 控制台中消失。

有关 Cloud API 的更多详细信息，请参见这里 - https://clickhouse.ac.cn/docs/cloud/manage/api/api-overview

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