权限管理

MRS权限说明

默认情况下，管理员创建的IAM用户没有任何权限，需要将其加入用户组，并给用户组授予策略或角色，才能使得用户组中的用户获得对应的权限，这一过程称为授权。授权后，用户就可以基于被授予的权限对云服务进行操作。

MRS部署时通过物理区域划分，为项目级服务。授权时，“作用范围”需要选择“区域级项目”，然后在指定区域（如华北-北京1）对应的项目（cn-north-1）中设置相关权限，并且该权限仅对此项目生效；如果在“所有项目”中设置权限，则该权限在所有区域项目中都生效。访问MRS时，需要先切换至授权区域。

权限模型根据授权精细程度分为角色和策略。

• 角色：IAM最初提供的一种根据用户的工作职能定义权限的粗粒度授权机制。该机制以服务为粒度，提供有限的服务相关角色用于授权。由于各服务之间存在业务依赖关系，因此给用户授予角色时，可能需要一并授予依赖的其他角色，才能正确完成业务。角色并不能满足用户对精细化授权的要求，无法完全达到企业对权限最小化的安全管控要求。
• 策略：IAM最新提供的一种细粒度授权的能力，可以精确到具体服务的操作、资源以及请求条件等。基于策略的授权是一种更加灵活的授权方式，能够满足企业对权限最小化的安全管控要求。例如：针对MRS服务，管理员能够控制IAM用户仅能对集群进行指定的管理操作。如不允许某用户组删除集群，仅允许操作MRS集群基本操作，如创建集群、查询集群列表等。多数细粒度策略以API接口为粒度进行权限拆分，MRS支持的API授权项请参见权限策略和授权项。

表2列出了MRS常用操作与系统权限的授权关系，您可以参照该表选择合适的系统权限。

MRS FullAccess策略内容

{
    "Version": "1.1",
    "Statement": [
        {
            "Action": [
                "mrs:*:*",
                "ecs:*:*",
                "bms:*:*",
                "evs:*:*",
                "vpc:*:*",
                "kms:*:*",
                "rds:*:*",
                "bss:*:*"
            ],
            "Effect": "Allow"
        }
    ]
}

MRS CommonOperations策略内容

{
    "Version": "1.1",
    "Statement": [
        {
            "Action": [
                "mrs:*:get*",
                "mrs:*:list*",
                "ecs:*:get*",
                "ecs:*:list*",
                "bms:*:get*",
                "bms:*:list*",
                "evs:*:get*",
                "evs:*:list*",
                "vpc:*:get*",
                "vpc:*:list*",
                "mrs:job:submit",
                "mrs:job:stop",
                "mrs:job:delete",
                "mrs:job:checkSql",
                "mrs:job:batchDelete",
                "mrs:file:create",
                "mrs:file:delete",
                "mrs:tag:batchOperate",
                "mrs:tag:create",
                "mrs:tag:delete",
                "mrs:manager:access",
                "mrs:patch:install",
                "mrs:patch:uninstall",
                "mrs:ops:grant",
                "mrs:ops:shareLog",
                "mrs:alarm:subscribe",
                "mrs:alarm:delete",
                "kms:*:get*",
                "kms:*:list*",
                "rds:*:get*",
                "rds:*:list*",
                "mrs:bootstrap:*",
                "bss:*:view*"
            ],
            "Effect": "Allow"
        },
        {
            "Action": [
                "mrs:cluster:create",
                "mrs:cluster:resize",
                "mrs:cluster:scaleUp",
                "mrs:cluster:delete",
                "mrs:cluster:policy"
            ],
            "Effect": "Deny"
        }
    ]
}

MRS ReadOnlyAccess策略内容

{
    "Version": "1.1",
    "Statement": [
        {
            "Action": [
                "mrs:*:get*",
                "mrs:*:list*",
                "mrs:tag:count",
                "ecs:*:get*",
                "ecs:*:list*",
                "bms:*:get*",
                "bms:*:list*",
                "evs:*:get*",
                "evs:*:list*",
                "vpc:*:get*",
                "vpc:*:list*",
                "kms:*:get*",
                "kms:*:list*",
                "rds:*:get*",
                "rds:*:list*",
                "bss:*:view*"
            ],
            "Effect": "Allow"
        },
        {
            "Action": [
                "mrs:cluster:create",
                "mrs:cluster:resize",
                "mrs:cluster:scaleUp",
                "mrs:cluster:delete",
                "mrs:cluster:policy",
                "mrs:job:submit",
                "mrs:job:stop",
                "mrs:job:delete",
                "mrs:job:batchDelete",
                "mrs:file:create",
                "mrs:file:delete",
                "mrs:tag:batchOperate",
                "mrs:tag:create",
                "mrs:tag:delete",
                "mrs:manager:access",
                "mrs:patch:install",
                "mrs:patch:uninstall",
                "mrs:ops:grant",
                "mrs:ops:shareLog",
                "mrs:alarm:subscribe"
            ],
            "Effect": "Deny"
        }
    ]
}

MRS Administrator策略内容

{
    "Depends": [
        {
            "catalog": "BASE",
            "display_name": "Server Administrator"
        },
        {
            "catalog": "BASE",
            "display_name": "Tenant Guest"
        }
    ],
    "Version": "1.0",
    "Statement": [
        {
            "Action": [
                "MRS:MRS:*"
            ],
            "Effect": "Allow"
        }
    ]
}

相关链接

• IAM产品介绍
• 创建用户组、用户并授予MRS权限
• 策略支持的授权项