添加 VPC 资源时 SCP 行为突然

Question

当 ec2 资源（子网、安全组、实例、vpc）没有标签时，我正在使用 SCP 策略停止创建它们。我正在使用标签策略来检查合规标签。

但是一旦我在我的 scp 策略中为 vpc 添加操作和资源，我就无法创建子网、安全组。

下面的 SCP 策略在没有 vpc 资源的情况下工作正常 -

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "Statement1ForProjectTag",
      "Effect": "Deny",
      "Action": [
        "ec2:RunInstances",
        "ec2:CreateSecurityGroup",
        "ec2:CreateSubnet"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:instance/*",
        "arn:aws:ec2:*:*:security-group/*",
        "arn:aws:ec2:*:*:subnet/*"
      ],
     "Condition": {
        "Null": {
          "aws:RequestTag/project": [
            "true"
          ]
        }
      }
    }
  ]
}

此 SCP 政策正在失效 - 即我无法使用适当的标签创建安全 group/subnet。

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "Statement1ForProjectTag",
      "Effect": "Deny",
      "Action": [
        "ec2:RunInstances",
        "ec2:CreateSecurityGroup",
        "ec2:CreateSubnet",
        "ec2:CreateVpc"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:instance/*",
        "arn:aws:ec2:*:*:security-group/*",
        "arn:aws:ec2:*:*:subnet/*",
        "arn:aws:ec2:*:*:vpc/*"
      ],
     "Condition": {
        "Null": {
          "aws:RequestTag/project": [
            "true"
          ]
        }
      }
    }
  ]
}

有人可以解释一下吗？

Answer 1

不建议在同一语句中组合不同的 Actions 和 Resource。它可能会导致意外行为或某些问题。还有not all actions are applicable to all resources，需要指定合适的

所以首先要把语句拆分成多个。然后将效果从 Allow 更改为 Deny，并将条件更改为 'StringNotEquals'.

SCP应该是这样的：

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "Statement1ForProjectTag",
      "Effect": "Deny",
      "Action": [
        "ec2:RunInstances"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:instance/*"
      ],
      "Condition": {
        "ForAllValues:StringNotEquals": {
          "aws:TagKeys": [
            "project"
          ]
        }
      }
    },
    {
      "Sid": "Statement2ForProjectTag",
      "Effect": "Deny",
      "Action": [
        "ec2:CreateSecurityGroup"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:security-group/*"
      ],
      "Condition": {
        "ForAllValues:StringNotEquals": {
          "aws:TagKeys": [
            "project"
          ]
        }
      }
    },
    {
      "Sid": "Statement3ForProjectTag",
      "Effect": "Deny",
      "Action": [
        "ec2:CreateSubnet"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:subnet/*"
      ],
      "Condition": {
        "ForAllValues:StringNotEquals": {
          "aws:TagKeys": [
            "project"
          ]
        }
      }
    },
    {
      "Sid": "Statement4ForProjectTag",
      "Effect": "Deny",
      "Action": [
        "ec2:CreateVpc"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:vpc/*"
      ],
      "Condition": {
        "ForAllValues:StringNotEquals": {
          "aws:TagKeys": [
            "project"
          ]
        }
      }
    }
  ]
}

添加 VPC 资源时 SCP 行为突然

SCP behaving abruptly when adding VPC resource

amazon-ec2

amazon-web-services

amazon-vpc

aws-organizations