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# 安装程序配置资源的最低 IAM 策略
<a name="provision-minimal-iam-policy"></a>

安装 AWS IoT Greengrass Core 软件时，您可以为设备预置所需的 AWS 资源， AWS IoT 例如设备和 IAM 角色。您也可以将本地开发工具部署到设备。安装程序需要 AWS 凭据才能在中执行这些操作 AWS 账户。有关更多信息，请参阅 [安装 AWS IoT Greengrass Core 软件](install-greengrass-core-v2.md)。

以下示例策略包括安装程序配置这些资源所需的最低操作集。如果您为安装程序指定 `--provision` 参数，则需要这些权限。*account-id*替换为您的 AWS 账户 ID，并*GreengrassV2TokenExchangeRole*替换为您在`--tes-role-name`[安装程序参数](configure-installer.md)中指定的令牌交换角色的名称。

**注意**  
只有在为安装程序指定 `--deploy-dev-tools` 参数时，才需要 `DeployDevTools` 策略声明。

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#### [ Greengrass nucleus v2.5.0 and later ]

------
#### [ JSON ]

****  

```
{
    "Version":"2012-10-17",		 	 	 
    "Statement": [
        {
            "Sid": "CreateTokenExchangeRole",
            "Effect": "Allow",
            "Action": [
                "iam:AttachRolePolicy",
                "iam:CreatePolicy",
                "iam:CreateRole",
                "iam:GetPolicy",
                "iam:GetRole",
                "iam:PassRole"
            ],
            "Resource": [
                "arn:aws:iam::123456789012:role/GreengrassV2TokenExchangeRole",
                "arn:aws:iam::123456789012:policy/GreengrassV2TokenExchangeRoleAccess",
                "arn:aws:iam::aws:policy/GreengrassV2TokenExchangeRoleAccess"
            ]
        },
        {
            "Sid": "CreateIoTResources",
            "Effect": "Allow",
            "Action": [
                "iot:AddThingToThingGroup",
                "iot:AttachPolicy",
                "iot:AttachThingPrincipal",
                "iot:CreateKeysAndCertificate",
                "iot:CreatePolicy",
                "iot:CreateRoleAlias",
                "iot:CreateThing",
                "iot:CreateThingGroup",
                "iot:DescribeEndpoint",
                "iot:DescribeRoleAlias",
                "iot:DescribeThingGroup",
                "iot:GetPolicy"
            ],
            "Resource": "*"
        },
        {
            "Sid": "DeployDevTools",
            "Effect": "Allow",
            "Action": [
                "greengrass:CreateDeployment",
                "iot:CancelJob",
                "iot:CreateJob",
                "iot:DeleteThingShadow",
                "iot:DescribeJob",
                "iot:DescribeThing",
                "iot:DescribeThingGroup",
                "iot:GetThingShadow",
                "iot:UpdateJob",
                "iot:UpdateThingShadow"
            ],
            "Resource": "*"
        }
    ]
}
```

------

------
#### [ Earlier than v2.5.0 ]

------
#### [ JSON ]

****  

```
{
    "Version":"2012-10-17",		 	 	 
    "Statement": [
        {
            "Sid": "CreateTokenExchangeRole",
            "Effect": "Allow",
            "Action": [
                "iam:AttachRolePolicy",
                "iam:CreatePolicy",
                "iam:CreateRole",
                "iam:GetPolicy",
                "iam:GetRole",
                "iam:PassRole"
            ],
            "Resource": [
            "arn:aws:iam::123456789012:role/GreengrassV2TokenExchangeRole",
    "arn:aws:iam::123456789012:policy/GreengrassV2TokenExchangeRoleAccess",
                "arn:aws:iam::aws:policy/GreengrassV2TokenExchangeRoleAccess"
            ]
        },
        {
            "Sid": "CreateIoTResources",
            "Effect": "Allow",
            "Action": [
                "iot:AddThingToThingGroup",
                "iot:AttachPolicy",
                "iot:AttachThingPrincipal",
                "iot:CreateKeysAndCertificate",
                "iot:CreatePolicy",
                "iot:CreateRoleAlias",
                "iot:CreateThing",
                "iot:CreateThingGroup",
                "iot:DescribeEndpoint",
                "iot:DescribeRoleAlias",
                "iot:DescribeThingGroup",
                "iot:GetPolicy"
            ],
            "Resource": "*"
        },
        {
            "Sid": "DeployDevTools",
            "Effect": "Allow",
            "Action": [
                "greengrass:CreateDeployment",
                "iot:CancelJob",
                "iot:CreateJob",
                "iot:DeleteThingShadow",
                "iot:DescribeJob",
                "iot:DescribeThing",
                "iot:DescribeThingGroup",
                "iot:GetThingShadow",
                "iot:UpdateJob",
                "iot:UpdateThingShadow"
            ],
            "Resource": "*"
        }
    ]
}
```

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