amazon-web-services - 属性定义不一致

Question

我有以下模板，我在 cloudformation UI 中使用它来创建 dynamoDB 表。我想创建一个表，其中 PrimaryKey 作为 ID，sortKey 作为 Value

{
  "AWSTemplateFormatVersion" : "2010-09-09",

  "Description" : "DB Description",

  "Resources" : {
    "TableName" : {
      "Type" : "AWS::DynamoDB::Table",
      "Properties" : {
        "AttributeDefinitions": [ { 
          "AttributeName" : "ID",
          "AttributeType" : "S"
        }, { 
          "AttributeName" : "Value",
          "AttributeType" : "S"
        } ],
        "KeySchema": [
          { 
            "AttributeName": "ID", 
            "KeyType": "HASH"
          }
        ]                
      },
      "TableName": "TableName"
    }
  }
}

在 CF UI 上，我单击“新堆栈”，指向本地计算机中的模板 文件，为堆栈指定名称，然后单击“下一步”。一段时间后，我收到错误消息:Property AttributeDefinitions 与表和二级索引的 KeySchema 不一致

Answer 1

问题在于，Resources.Properties.AttributeDefinitions 键必须仅定义用于索引或键的列。换句话说，Resources.Properties.AttributeDefinitions 中的键必须与 Resources.Properties.KeySchema 中定义的相同键匹配。

AWS 文档:

AttributeDefinitions: A list of AttributeName and AttributeType objects that describe the key schema for the table and indexes.

因此生成的模板将如下所示:

{
  "AWSTemplateFormatVersion" : "2010-09-09",

  "Description" : "DB Description",

  "Resources" : {
    "TableName" : {
    "Type" : "AWS::DynamoDB::Table",
    "Properties" : {
      "AttributeDefinitions": [ { 
        "AttributeName" : "ID",
        "AttributeType" : "S"
      } ],
      "ProvisionedThroughput":{
        "ReadCapacityUnits" : 1,
        "WriteCapacityUnits" : 1
      },
      "KeySchema": [
        { 
          "AttributeName": "ID", 
          "KeyType": "HASH"
        }
       ] ,               
      "TableName": "table5"
    }
   }
  }
}