1 腾讯云

1.1 tf配置

标签（Tag）是腾讯云提供的云资源管理工具，以键值对 key:values 的形式存在，用于关联您的大多数云资源，对于资源的分类、搜索和聚合十分有用。 在 Terraform 中，通过 Map 来定义一个资源的 Tag，示例如下：

resource "tencentcloud_instance" "cvm" {tags = {key1: "val1",key2: "val2"}
}

1.2  Tag 代码实现

通过云 API 对资源添加 Tag 有两种实现方式。第一种是通过 CreateAPI 参数传入，代码如下：

rsType := "instance"request := cvm.NewRunInstanceRequest()
request.TagSpecification = append(request.TagSpecification, &cvm.TagSpecification{ResourceType: &rsType,Tags: []*cvm.Tag{{Key: &key,Value: &value,},},
})

需要注意的是，目前仅有部分资源的创建 API 支持传入 Tag，且数据结构也有所不同。为了统一管理 Tag 代码，我们采用第二种方式，即创建后单独调用 Tag API 关联，入参为 资源六段式，格式为：

qcs:<project_id，此处置空>:<模块>:<地域>:<账号/uin>:<资源/ID>

以 VPC 举例，如要修改 VPC 实例关联的 Tag，入参如下：

qcs::vpc:ap-singapore:uin/:vpc/vpc-xxxxxxxx

代码中则调用封装好的 ModifyTags 即可：

package mainfunc ResourceTencentCloudVPCUpdate(d *schema.ResourceData, meta interface{}) {ctx := context.TODO()region := meta.(*TencentCloudClient).apiV3Conn.Regionid := d.Id()resourceName := fmt.Sprintf("qcs::vpc:%s:uin/:vpc/%s", region, id)replaceTags, deleteTags := diffTags(oldTags.(map[string]interface{}), newTags.(map[string]interface{}))if err := tagService.ModifyTags(ctx, resourceName, replaceTags, deleteTags); err != nil {return err}
}

2 AWS

2.1 tf配置

1）直接在resource配置

resource "aws_instance" "example" {ami           = "ami-0c55b159cbfafe1f0"instance_type = "t2.micro"tags = {env  = "dev"app  = "web"role = "frontend"}
}

2）单独配置变量

# 设置提供商
provider "aws" {region = "us-west-2"
}# 定义标签
variable "tags" {type = mapdefault = {Name        = "example-resource"Environment = "production"}
}# 创建 EC2 实例
resource "aws_instance" "example" {ami           = "ami-0c94855ba95c71c99"instance_type = "t2.micro"tags          = var.tags
}

3）default_tags块中添加动态值的标签

provider "aws" {region = "us-west-2"default_tags {tags = {Name        = "my-instance"Environment = var.environmentProject     = var.project}}
}variable "environment" {description = "The environment"default     = "dev"
}variable "project" {description = "The project name"default     = "my-project"
}resource "aws_instance" "example" {ami           = "ami-0c94855ba95c71c99"instance_type = "t2.micro"
}

3 阿里云

3.1 tf配置

...
resource "alicloud_db_instance" "instance" {
...tags = {testTarraform = "PG12"}
}  

4 华为云

4.1 tf配置

resource "huaweicloud_compute_instance" "default" {cidr_block           = "10.${var.cidr_numeral}.0.0/16"enable_dns_hostnames = truetags {Name = "vpc-${var.vpc_name}"}
}

5 GCP

provider "google" { project = "<google-project-id>" region = "us-central1" 
}resource "google_compute_instance" "default" { name = "example-instance" machine_type = "f1-micro"// 添加标签 labels = { environment = "production" tier = "web" } 
}

resource "google_compute_instance" "example" {name         = "example-instance"machine_type = "n1-standard-1"zone         = "us-central1-a"count = var.set_labels ? 1 : 0labels = {[var.label_name] = var.label_value} lifecycle {ignore_changes = [labels]}
}