Terraform未识别AWS S3 Object资源问题排查求助

多次尝试后发现，Terraform可正常创建S3 Bucket及Bucket网站配置资源，但S3 Object资源始终无法生成，相关代码如下：

resource "aws_s3_bucket" "My_bucket" {
  bucket = "my-test-bucket-for-cloudfront"
  tags = {
    Name = "My bucket"
  }
}

resource "aws_s3_bucket_public_access_block" "public_bucket" {
  bucket = aws_s3_bucket.My_bucket.id

  block_public_acls       = false
  block_public_policy     = false
  ignore_public_acls      = false
  restrict_public_buckets = false
}

resource "aws_s3_object" "object" {
  # Use a for loop to grab every file in the folder.
  # The fileset() function is used to read all the files in a folder
  for_each = fileset("/travel-agency-html-template/", "**")
  bucket = "my-test-bucket-for-cloudfront"
  # Use each.value to grab every file inside the folder
  key    = each.value
  source = "/travel-agency-html-template/${each.value}"
  acl = "public-read"
  etag = filemd5("travel-agency-html-template/${each.value}")

  depends_on = [ aws_s3_bucket.My_bucket ]
}

resource "aws_s3_bucket_website_configuration" "travel_agency" {
  bucket = aws_s3_bucket.My_bucket.id

  index_document {
    suffix = "/travel-agency-html-template/index.html"
  }

  error_document {
    key = "/travel-agency-html-template/404.html"
  }
}

问题排查与修复要点 #

• 路径问题（核心原因）：
  代码中使用绝对路径/travel-agency-html-template/，若该路径在Terraform执行环境中不存在或权限不足，fileset会返回空集合，直接导致无Object资源生成。建议改用相对路径（假设模板文件夹与Terraform配置文件同目录），修改如下：

  for_each = fileset("./travel-agency-html-template/", "**")
  source = "./travel-agency-html-template/${each.value}"
  etag = filemd5("./travel-agency-html-template/${each.value}")
  

  可通过terraform console执行fileset("./travel-agency-html-template/", "**")验证是否能读取到文件列表。

• ETag路径不一致：
  原代码中filemd5的参数缺少开头斜杠，与source路径不匹配，可能导致文件读取失败，需保持路径完全一致。

• Bucket名称硬编码：
  直接引用Bucket资源的属性替代硬编码名称，提升代码健壮性，避免Bucket名称修改后代码未同步：

  bucket = aws_s3_bucket.My_bucket.bucket
  

• 网站配置路径错误：
  index_document.suffix和error_document.key应对应文件在Bucket中的key值，而非本地路径。若上传后文件key为index.html和404.html，需修改为：

  index_document {
    suffix = "index.html"
  }
  
  error_document {
    key = "404.html"
  }
  

内容的提问来源于stack exchange，提问作者charles uneze