如果系统预置的MRS权限，不满足您的授权要求，可以创建自定义策略。

目前支持以下两种方式创建自定义策略：

• 可视化视图创建自定义策略：无需了解策略语法，按可视化视图导航栏选择云服务、操作、资源、条件等策略内容，可自动生成策略。
• JSON视图创建自定义策略：可以在选择策略模板后，根据具体需求编辑策略内容；也可以直接在编辑框内编写JSON格式的策略内容。

本章为您介绍常用的MRS自定义策略样例。

MRS自定义策略样例

• 示例1：授权用户仅有创建MRS集群的权限。

{ 
    "Version": "1.1", 
    "Statement": [ 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "mrs:cluster:create", 
                "ecs:*:*", 
                "bms:*:*", 
                "evs:*:*", 
                "vpc:*:*", 
                "smn:*:*" 
            ] 
        } 
    ] 
}

示例2：授权用户调整MRS集群。

{  
    "Version": "1.1",  
    "Statement": [  
        {  
            "Effect": "Allow",  
            "Action": [  
                "mrs:cluster:resize"  
            ]  
        }  
    ]  
}

示例3：授权用户创建集群、创建并执行作业、删除单个作业，但不允许用户删除集群的权限。

{ 
    "Version": "1.1", 
    "Statement": [ 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "mrs:cluster:create", 
                "mrs:job:submit", 
                "mrs:job:delete" 
            ] 
        }, 
        { 
            "Effect": "Deny", 
            "Action": [ 
                "mrs:cluster:delete" 
            ] 
        } 
    ] 
}

示例4：授权用户最小权限，创建ECS规格的集群。

                
说明
                
创建集群时如果使用秘钥对，增加权限：ecs:serverKeypairs:get和ecs:serverKeypairs:list
创集群时使用数据盘加密，增加权限：kms:cmk:list
创建集群时开启告警功能，增加权限：mrs:alarm:subscribe
创建集群时使用外置数据源，增加权限：rds:instance:list
              

{ 
    "Version": "1.1", 
    "Statement": [ 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "mrs:cluster:create" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "ecs:cloudServers:updateMetadata", 
                "ecs:cloudServerFlavors:get", 
                "ecs:cloudServerQuotas:get", 
                "ecs:servers:list", 
                "ecs:servers:get", 
                "ecs:cloudServers:delete", 
                "ecs:cloudServers:list", 
                "ecs:serverInterfaces:get", 
                "ecs:serverGroups:manage", 
                "ecs:servers:setMetadata", 
                "ecs:cloudServers:get", 
                "ecs:cloudServers:create" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "vpc:securityGroups:create", 
                "vpc:securityGroupRules:delete", 
                "vpc:vpcs:create", 
                "vpc:ports:create", 
                "vpc:securityGroups:get", 
                "vpc:subnets:create", 
                "vpc:privateIps:delete", 
                "vpc:quotas:list", 
                "vpc:networks:get", 
                "vpc:publicIps:list", 
                "vpc:securityGroups:delete", 
                "vpc:securityGroupRules:create", 
                "vpc:privateIps:create", 
                "vpc:ports:get", 
                "vpc:ports:delete", 
                "vpc:publicIps:update", 
                "vpc:subnets:get", 
                "vpc:publicIps:get", 
                "vpc:ports:update", 
                "vpc:vpcs:list" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "evs:quotas:get", 
                "evs:types:get" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "bms:serverFlavors:get" 
            ] 
        } 
    ] 
}

示例5：授权用户最小权限，创建BMS规格的集群。

                
说明
                
创建集群时如果使用秘钥对，增加权限：ecs:serverKeypairs:get和ecs:serverKeypairs:list
创集群时使用数据盘加密，增加权限：kms:cmk:list
创建集群时开启告警功能，增加权限：mrs:alarm:subscribe
创建集群时使用外置数据源，增加权限：rds:instance:list
              

{ 
    "Version": "1.1", 
    "Statement": [ 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "mrs:cluster:create" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "ecs:servers:list", 
                "ecs:servers:get", 
                "ecs:cloudServers:delete", 
                "ecs:serverInterfaces:get", 
                "ecs:serverGroups:manage", 
                "ecs:servers:setMetadata", 
                "ecs:cloudServers:create", 
                "ecs:cloudServerFlavors:get", 
                "ecs:cloudServerQuotas:get" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "vpc:securityGroups:create", 
                "vpc:securityGroupRules:delete", 
                "vpc:vpcs:create", 
                "vpc:ports:create", 
                "vpc:securityGroups:get", 
                "vpc:subnets:create", 
                "vpc:privateIps:delete", 
                "vpc:quotas:list", 
                "vpc:networks:get", 
                "vpc:publicIps:list", 
                "vpc:securityGroups:delete", 
                "vpc:securityGroupRules:create", 
                "vpc:privateIps:create", 
                "vpc:ports:get", 
                "vpc:ports:delete", 
                "vpc:publicIps:update", 
                "vpc:subnets:get", 
                "vpc:publicIps:get", 
                "vpc:ports:update", 
                "vpc:vpcs:list" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "evs:quotas:get", 
                "evs:types:get" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "bms:servers:get", 
                "bms:servers:list", 
                "bms:serverQuotas:get", 
                "bms:servers:updateMetadata", 
                "bms:serverFlavors:get" 
            ] 
        } 
    ] 
}

示例6：授权用户最小权限，创建ECS和BMS混合集群。

                
说明
                
创建集群时如果使用秘钥对，增加权限：ecs:serverKeypairs:get和ecs:serverKeypairs:list
创集群时使用数据盘加密，增加权限：kms:cmk:list
创建集群时开启告警功能，增加权限：mrs:alarm:subscribe
创建集群时使用外置数据源，增加权限：rds:instance:list
              

{ 
    "Version": "1.1", 
    "Statement": [ 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "mrs:cluster:create" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "ecs:cloudServers:updateMetadata", 
                "ecs:cloudServerFlavors:get", 
                "ecs:cloudServerQuotas:get", 
                "ecs:servers:list", 
                "ecs:servers:get", 
                "ecs:cloudServers:delete", 
                "ecs:cloudServers:list", 
                "ecs:serverInterfaces:get", 
                "ecs:serverGroups:manage", 
                "ecs:servers:setMetadata", 
                "ecs:cloudServers:get", 
                "ecs:cloudServers:create" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "vpc:securityGroups:create", 
                "vpc:securityGroupRules:delete", 
                "vpc:vpcs:create", 
                "vpc:ports:create", 
                "vpc:securityGroups:get", 
                "vpc:subnets:create", 
                "vpc:privateIps:delete", 
                "vpc:quotas:list", 
                "vpc:networks:get", 
                "vpc:publicIps:list", 
                "vpc:securityGroups:delete", 
                "vpc:securityGroupRules:create", 
                "vpc:privateIps:create", 
                "vpc:ports:get", 
                "vpc:ports:delete", 
                "vpc:publicIps:update", 
                "vpc:subnets:get", 
                "vpc:publicIps:get", 
                "vpc:ports:update", 
                "vpc:vpcs:list" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "evs:quotas:get", 
                "evs:types:get" 
            ] 
        }, 
        { 
            "Effect": "Allow", 
            "Action": [ 
                "bms:servers:get", 
                "bms:servers:list", 
                "bms:serverQuotas:get", 
                "bms:servers:updateMetadata", 
                "bms:serverFlavors:get" 
            ] 
        } 
    ] 
}