目前，阿里云资源编排服务（ROS）开始支持弹性网卡功能，ROS的云资源类型添加了3个新成员，
我们先看看阿里云ROS弹性网卡相关的3个资源类型都提供了什么能力和怎样使用。假如你还没接触过阿里云的资源编排服务，请戳这里
资源编排笼统了弹性网卡CreateNetworkInterface接口的能力，一个简单的创立弹性网卡的模板如下：
"ROSTemplateFormatVersion" : "2015-09-01", "Resources" : { "EniInstance": { "Type": "ALIYUN::ECS::NetworkInterface", "Properties": { 'VSwitchId': 'vsw-2zetgeiqlemyok9z5j2em', 'SecurityGroupId': 'sg-2ze3yg7oo90ejudett9j', 'NetworkInterfaceName': 'my-eni-name' 'Description': 'eni-name-description' } } }, "Outputs": { "NetworkInterfaceId": { "Value" : {"Fn::GetAtt": ["EniInstance", "NetworkInterfaceId"]} } }}我们可以看出，只要要定义交换机ID和安全组ID，即可以创立出一块弹性网卡，当然你也可以指定网卡的名称和形容信息。最后通过Outputs标签返回新建弹性网卡的ID。
资源编排笼统了弹性网卡AttachNetworkInterface接口的能力，一个简单的绑定弹性网卡的模板如下：
"ROSTemplateFormatVersion" : "2015-09-01", "Resources" : { "EniInstance": { "Type": "ALIYUN::ECS::NetworkInterfaceAttachment", "Properties": { 'NetworkInterfaceId': 'eni-2zefnmihs8r13tqdeomr', 'InstanceId': 'i-2ze8m2j71rb2m8saw6g6' } } }}只要要指定网卡ID和ECS实例ID就可。#受权弹性网卡资源编排笼统了弹性网卡CreateNetworkInterfacePermission接口的能力，一个简单的受权弹性网卡的模板如下：{ "ROSTemplateFormatVersion" : "2015-09-01", "Resources" : { "EniPermissionInstance": { "Type": "ALIYUN::ECS::NetworkInterfacePermission", "Properties": { 'AccountId': '1754580903499898', 'NetworkInterfaceId': 'eni-2zehcsxovaeso7ivbgzp' } } }, "Outputs": { "NetworkInterfacePermissionId": { "Value" : {"Fn::GetAtt": ["EniPermissionInstance", "NetworkInterfacePermissionId"]} } }}受权网卡需要指定被受权的网卡ID和受权的客户ID，通过Outputs标签返回受权的ID。
资源编排的弹性网卡能力具体怎样使用呢？我们先看一个常见的场景：“我们需要在阿里云上购买一个ECS，而后绑定一个弹性网卡。”
在不用资源编排模板的情况下你需要做如下操作：
1、先在ECS实例控制台创立一个ECS，中间你还需要：创立VPC，VSwitch，SecurityGroup。
2、切换到弹性网卡页面，创立弹性网卡，此时必需正确指定第一步骤创立的VPC、VSwitch和SecurityGroup。假如你的VPC数目比较多，你还得切换页面记下第一步的VPC信息，以便填写。
3、在弹性网卡页面绑定ECS实例
再看看使用ROS的方法
1、编写一个ROS模板(见附录）
2、创立stack，填写创立ECS必要的信息（如镜像ID，实例规格，区域等）
创立说明：
1、ROS Stack在创立过程中，创立了一个VPC、一个VSwitch、一个SecurityGroup、一个ECS实例和一个弹性网卡，并自动地将弹性网卡受权给指定客户，而后绑定到ECS。填写一些信息后，所有操作就不需要人为干预，一键部署。（如图1）
2、假如中间创立失败，整个Stack的资源自动回滚。
3、我们编写的ROS模板可以在保存，下次可以继续使用。（如图2）
整个过程是不是很方便呢！当然，在阿里云资源编排产品中，你可以结合你的业务场景，灵活地使用弹性网卡功能，编排你的业务。期待你的分享！
2.png "ROSTemplateFormatVersion": "2015-09-01", "Description": "One VPC, VSwitch, security group, ECS instance, and route. The user needs to specify the image ID.", "Parameters": { "ImageId": { "Default": "centos_7", "Type": "String", "Description": "Image Id, represents the image resource to startup the ECS instance, <a href='#/product/cn-shenzhen/list/imageList' target='_blank'>View image resources</a>" }, "InstanceType": { "Type": "String", "Description": "The ECS instance type, <a href='#/product/cn-shenzhen/list/typeList' target='_blank'>View instance types</a>", "Default": "ecs.sn1ne.large" }, "AccountId":{ "Type": "String", "Description": "The account id" }, "ZoneId": { "Type": "String", "Description": "The available zone, <a href='#/product/cn-shenzhen/list/zoneList' target='_blank'>View available zones</a>" }, "SecurityGroupName": { "Type": "String", "Description": "The security group name", "Default": "my-sg-name" }, "NetworkInterfaceName": { "Type": "String", "Description": "The Network interface name", "Default": "my-eni-name" }, "VpcName": { "Type": "String", "Description": "The VPC name", "MinLength": 2, "MaxLength": 128, "ConstraintDescription": "[2, 128] English or Chinese letters", "Default": "my-vpc-name" }, "IoOptimized": { "AllowedValues": [ "none", "optimized" ], "Description": "IO optimized, optimized is for the IO optimized instance type", "Type": "String", "Default": "optimized" }, "SystemDiskCategory": { "AllowedValues": [ "cloud", "cloud_efficiency", "cloud_ssd" ], "Description": "System disk category: average cloud disk(cloud), efficient cloud disk(cloud_efficiency) or SSD cloud disk(cloud_ssd)", "Type": "String", "Default": "cloud_ssd" }, "VpcCidrBlock": { "Type": "String", "AllowedValues": [ "192.168.0.0/16", "172.16.0.0/12", "10.0.0.0/8" ], "Default": "10.0.0.0/8" }, "VSwitchCidrBlock": { "Type": "String", "Description": "The VSwitch subnet which must be within VPC", "Default": "10.0.10.0/24" } }, "Resources": { "Vpc": { "Type": "ALIYUN::ECS::VPC", "Properties": { "CidrBlock": { "Ref": "VpcCidrBlock" }, "VpcName": { "Ref": "VpcName" } } }, "VSwitch": { "Type": "ALIYUN::ECS::VSwitch", "Properties": { "CidrBlock": { "Ref": "VSwitchCidrBlock" }, "ZoneId": { "Ref": "ZoneId" }, "VpcId": { "Fn::GetAtt": [ "Vpc", "VpcId" ] } } }, "WebServer": { "Type": "ALIYUN::ECS::Instance", "Properties": { "ImageId": { "Ref": "ImageId" }, "InstanceType": { "Ref": "InstanceType" }, "SecurityGroupId": { "Ref": "SecurityGroup" }, "VpcId": { "Fn::GetAtt": [ "Vpc", "VpcId" ] }, "VSwitchId": { "Ref": "VSwitch" }, "IoOptimized": { "Ref": "IoOptimized" }, "SystemDisk_Category": { "Ref": "SystemDiskCategory" } } }, "SecurityGroup": { "Type": "ALIYUN::ECS::SecurityGroup", "Properties": { "SecurityGroupName": { "Ref": "SecurityGroupName" }, "VpcId": { "Ref": "Vpc" } } }, "ENI": { "Type": "ALIYUN::ECS::NetworkInterface", "Properties": { "VSwitchId": { "Ref": "VSwitch" }, "SecurityGroupId": { "Ref": "SecurityGroup" }, "NetworkInterfaceName": { "Ref": "NetworkInterfaceName" } } }, "EniAttach": { "Type": "ALIYUN::ECS::NetworkInterfaceAttachment", "Properties": { "NetworkInterfaceId": { "Ref": "ENI" }, "InstanceId": { "Ref": "WebServer" } } }, "EniPermissionInstance": { "Type": "ALIYUN::ECS::NetworkInterfacePermission", "Properties": { "AccountId": { "Ref":"AccountId" }, "NetworkInterfaceId": { "Ref": "ENI" }, "Permission": "InstanceAttach" } } }, "Outputs": { "InstanceId": { "Value": { "Fn::GetAtt": [ "WebServer", "InstanceId" ] } }, "PublicIp": { "Value": { "Fn::GetAtt": [ "WebServer", "PublicIp" ] } }, "SecurityGroupId": { "Value": { "Fn::GetAtt": [ "SecurityGroup", "SecurityGroupId" ] } }, "VpcId": { "Value": { "Fn::GetAtt": [ "Vpc", "VpcId" ] } }, "VSwitchId": { "Value": { "Fn::GetAtt": [ "VSwitch", "VSwitchId" ] } }, "NetworkInterfaceId": { "Value": { "Fn::GetAtt": [ "ENI", "NetworkInterfaceId" ] } }, "NetworkInterfacePermissionId": { "Value": { "Fn::GetAtt": [ "EniPermissionInstance", "NetworkInterfacePermissionId" ] } } }}作者：ros-test
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