开通灵骏连接后，用户可通过灵骏连接访问阿里云其他云产品（例如，访问VPC、创建专线、创建弹性网卡等），进行此类操作时需通过服务关联角色获取对应云产品的访问权限。本文为您介绍灵骏连接实例关联角色（AliyunServiceRoleForEfloVcc）的应用场景以及如何删除服务关联角色。
背景信息
灵骏连接服务关联角色（AliyunServiceRoleForEfloVcc）是在某些情况下，为了完成灵骏连接自身的某个功能，需要获取其他云服务的访问权限，而提供的RAM角色。更多关于服务关联角色的信息请参见服务关联角色。
权限说明
角色名称：AliyunServiceRoleForEfloVcc
角色权限策略：
{ "Version": "1", "Statement": [ { "Action": [ "ecs:CreateNetworkInterface", "ecs:AttachNetworkInterface", "ecs:DetachNetworkInterface", "ecs:DeleteNetworkInterface", "ecs:DescribeNetworkInterfaces", "ecs:CreateSecurityGroup", "ecs:DeleteSecurityGroup", "ecs:AuthorizeSecurityGroup", "ecs:AuthorizeSecurityGroupEgress", "ecs:RevokeSecurityGroup", "ecs:RevokeSecurityGroupEgress", "ecs:DescribeSecurityGroups", "ecs:DescribeSecurityGroupAttribute", "ecs:ModifyInstanceAttribute" ], "Resource": "*", "Effect": "Allow" }, { "Action": [ "vpc:DescribeVpcs", "vpc:DescribeVSwitches", "vpc:ConfirmPhysicalConnection", "vpc:CreateVirtualBorderRouter", "vpc:DeleteVirtualBorderRouter", "vpc:DescribeVirtualBorderRouters", "vpc:CreateBgpGroup", "vpc:DeleteBgpGroup", "vpc:DescribeBgpGroups", "vpc:CreateBgpPeer", "vpc:DeleteBgpPeer", "vpc:DescribeBgpPeers", "cen:AttachCenChildInstance", "cen:DetachCenChildInstance", "vpc:DescribeRouteEntryList", "vpc:AddBgpNetwork", "vpc:DeleteBgpNetwork", "vpc:DescribeBgpNetworks", "vpc:TerminatePhysicalConnection", "vpc:RecoverPhysicalConnection", "vpc:DeletePhysicalConnection", "vpc:OpenPhysicalConnectionService", "vpc:GetPhysicalConnectionServiceStatus", "vpc:DescribePhysicalConnections", "vpc:CreatePhysicalConnectionOccupancyOrder", "vpc:UpdateVirtualPhysicalConnection", "vpc:CreateRouterInterface", "vpc:DeleteRouterInterface", "vpc:DeactivateRouterInterface", "vpc:DescribeRouterInterfaces", "vpc:DescribeRouteTableList", "vpc:CreateRouteEntries", "vpc:DeleteRouteEntries", "vpc:CreateRouteEntry", "vpc:DeleteRouteEntry", "vpc:DescribeGrantRulesToCen", "vpc:GrantInstanceToCen", "vpc:RevokeInstanceFromCen", "vpc:CreatePhysicalConnectionNew", "vpc:ModifyVirtualBorderRouterAttribute", "vpc:AssociatePhysicalConnectionToVirtualBorderRouter", "vpc:UnassociatePhysicalConnectionFromVirtualBorderRouter", "bssapi:SetRenewal", "vpc:CancelPhysicalConnection" ], "Resource": "*", "Effect": "Allow" }, { "Action": [ "cen:CreateTransitRouterRouteEntry", "cen:ListTransitRouterRouteEntries", "cen:DeleteTransitRouterRouteEntry", "cen:ResolveAndRouteServiceInCen", "cen:DescribeRouteServicesInCen", "cen:DeleteRouteServiceInCen", "cen:CreateTransitRouterVbrAttachment", "cen:DeleteTransitRouterVbrAttachment", "cen:ListTransitRouterVbrAttachments", "cen:ListTransitRouterVpcAttachments", "cen:DisableTransitRouterRouteTablePropagation", "cen:EnableTransitRouterRouteTablePropagation", "cen:ListTransitRouterRouteTablePropagations", "cen:AssociateTransitRouterAttachmentWithRouteTable", "cen:DissociateTransitRouterAttachmentFromRouteTable", "cen:ListTransitRouterRouteTableAssociations", "cen:ListTransitRouterRouteTables", "cen:ListTransitRouters", "cen:ListTransitRouterAvailableResource", "cen:ResolveAndRouteServiceInCen", "cen:DescribeRouteServicesInCen", "cen:DeleteRouteServiceInCen", "cen:DescribeCenAttachedChildInstances", "cen:DescribeCenAttachedChildInstanceAttribute", "cen:DescribeCens" ], "Resource": "*", "Effect": "Allow" }, { "Action": [ "ros:ListStacks", "ros:GetStack", "ros:ListStackEvents", "ros:ListStackResources", "ros:GetStackResource", "ros:CreateStack", "ros:DeleteStack", "ros:PreviewStack" ], "Resource": [ "*" ], "Effect": "Allow" }, { "Action": "ram:DeleteServiceLinkedRole", "Resource": "*", "Effect": "Allow", "Condition": { "StringEquals": { "ram:ServiceName": "vcc.eflo.aliyuncs.com" } } } ] }
创建服务关联角色
当您第一次创建集群，进行网络配置，您需要单击授权服务角色创建按钮，一键创建服务关联角色（AliyunServiceRoleForEfloVcc）。
删除服务关联角色
如果您需要删除AliyunServiceRoleForEfloVcc（服务关联角色），需要先释放依赖这个服务关联角色的灵骏连接。
释放灵骏连接可等云服务实例到期自动释放。
删除服务关联角色具体操作请参见删除服务关联角色。