私有云裸金属是什么，私有云裸金属功能特点

私有云裸金属

主流的公有云都已经有了裸金属服务，那么私有云呢，私有云需要裸金属吗？答案是肯定的。很多公有云裸金属适用的应用场景，在私有云中也同样存在，自然也有裸金属的需求。

那么，私有云的裸金属应该怎么做呢？首先我们来研究下私有云的特点：

私有云相对于公有云，一般规模较小、设备少、一般在千台以下。对裸金属主机的需求也比较简单，要么用来部署高IO高性能要求的应用；要么用来运行无法虚拟化的硬件需要执行的工作；要么用来处理高性能运算。很少像公有云那样，客户是不确定的，需要同时满足各种不同的应用场景。私有云中裸金属主机在整个平台中占比也不会太大，所以云平台管理的裸金属主机的量级也不高。私有云的提供者和使用者一般不是提供商与客户的关系，对于申请到使用的时效性要求没有那么高，公有云的极速部署，分钟级交付在私有云上没有太大的吸引力。

除了上面提到的差别，公有云和私有云的裸金属服务有更多的相似性。都需要与虚拟机互联，共享网络和存储，能外带控制裸金属主机的开关机、监控裸金属主机资源使用情况，创建镜像、备份和灾备等。

总结下来，下面是私有云裸金属应该实现的功能点：

1.裸金属主机申请及自动交付

用户可以通过填写工单申请裸金属主机，申请通过后，用户可以自主选择安装相应的操作系统及软件。

2.裸金属主机状态监控

能实时监控裸金属主机的系统使用情况，包括CPU、内存、存储以及网络等，当出现异常是可以及时提醒用户或者管理员进行处理。

3.管理节点提供部署服务

规模比较小的时候，部署服务如DHCP服务、TFTP服务、PXE服务等可以由管理节点提供，而不需要单独配置一台部署服务器，大部分时间又用不上，造成资源浪费；当然，达到一定规模，单独配置部署服务器还是有必要的，可以减轻管理节点压力，专机专用。

4.与虚拟机便捷互联

在裸金属主机支持多种方式与虚拟机互联，可以建立虚拟私有网络（VPC），也可以通过扁平网络，以满足不同网络安全需求。

5.镜像与备份

支持云主机镜像创建金属主机，支持裸金属主机创建镜像、克隆，支持裸金属主机镜像备份以及恢复。

6.带外控制

远程管理物理机，实现物理机的开机关机功能。

7.支持容器或其他云平台

可以在裸金属主机上部署容器，享受容器技术带来的便利，也可以在上面部署其它的云平台。

私有云裸金属的未来

随着虚拟机技术的日趋成熟，虚拟机所带来的性能损耗会越来越少，一些基于性能考虑而选择裸金属的需要未来可能会越来越少。但在一些特殊场合，针对一些特殊设备如龙芯或其他不能虚拟化的设备中，云平台以裸金属形式纳管这些设备一定时间内还会长期存在。针对这种形式的裸金属设备，提供通用的管控接口，智能调度和状态监控也许是未来私有云裸金属管理方面发展的重点。

主机参考最新推出了裸金属服务器租用产品，裸金属服务器是一种按需购买、按量付费的物理云服务器租用服务，可以提供云端专用的高性能、安全隔离的物理服务器集群。具体详询主机参考客服zhujicankao.com。

Private cloud bare metal

The mainstream public cloud already has bare metal services. What about private cloud? Does private cloud need bare metal? The answer is yes. Many application scenarios for public cloud bare metal also exist in private cloud, and naturally there is a demand for bare metal.

So what about the bare metal of the private cloud? First, let's study the characteristics of private cloud:

Compared with the public cloud, the private cloud is generally smaller in scale, less in equipment and less than 1000 in number. The demand for bare metal hosts is also relatively simple, either to deploy applications with high IO and high performance requirements, or to run the work that cannot be virtualized hardware needs to perform, or to handle high-performance computing. Rarely like the public cloud, customers are uncertain and need to meet different application scenarios at the same time. The proportion of bare metal hosts in the private cloud will not be too large in the whole platform, so the magnitude of bare metal hosts managed by the cloud platform is not high. The providers and users of private cloud are generally not the relationship between providers and customers. The timeliness requirements for application to use are not so high. The rapid deployment of public cloud and minute level delivery are not very attractive on private cloud.

In addition to the above mentioned differences, there are more similarities between the bare metal services of public cloud and private cloud. All of them need to be connected with virtual machines, share network and storage, be able to control the on-off of bare metal hosts, monitor the use of resources of bare metal hosts, and create images, backups and disaster recovery.

In summary, the following are the function points that private cloud bare metal should achieve:

1. Application and automatic delivery of bare metal host

Users can apply for bare metal host by filling in work order. After the application is passed, users can choose to install corresponding operating system and software.

2. Bare metal host status monitoring

It can monitor the system usage of bare metal host in real time, including CPU, memory, storage, network, etc. in case of any exception, it can remind users or administrators to handle it in time.

3. The management node provides Deployment Services

When the scale is relatively small, deployment services such as DHCP service, TFTP service and PXE service can be provided by the management node, without the need to configure a deployment server alone, which can not be used most of the time, resulting in resource waste; of course, to a certain scale, it is necessary to configure a deployment server alone, which can reduce the pressure on the management node and be dedicated to the special machine.

4. Convenient interconnection with virtual machine

The bare metal host can be connected with the virtual machine in many ways. It can establish a virtual private network (VPC) or a flat network to meet different network security needs.

5. Image and backup

It supports virtual machine image creation of metal host, bare metal host creation of image and clone, and bare metal host image backup and recovery.

6. Out of band control

Remote management of the physical machine to achieve the physical machine power on and off function.

7. Support containers or other cloud platforms

Containers can be deployed on bare metal hosts to enjoy the convenience brought by container technology, and other cloud platforms can also be deployed on them.

The future of private cloud bare metal

With the maturity of virtual machine technology, the performance loss brought by virtual machine will be less and less, and the need to select bare metal based on performance considerations may be less and less in the future. But in some special occasions, for some special devices such as Godson or other devices that cannot be virtualized, the cloud platform will be used to manage these devices in the form of bare metal for a long time. For this form of bare metal equipment, providing a general management and control interface, intelligent scheduling and status monitoring may be the focus of the development of private cloud bare metal management in the future.

The host reference newly launched the bare metal server rental product. The bare metal server is a physical cloud server rental service purchased on demand and paid by volume, which can provide a high-performance, secure and isolated physical server cluster dedicated to the cloud. For details, please refer to customer service zhujicankao.com.

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