Basic Knowledge of Cloud Computing Training for Beginners

Today I will introduce the overall service of Alibaba Cloud IaaS. IaaS is an infrastructure, mainly including some services under computing, network, storage, management and deployment. Regardless of whether IaaS or PaaS ultimately selects public cloud services, there is no distinction between IaaS and PaaS in the specific service types. The following will lead you to quickly understand the Alibaba cloud IaaS series of services.

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Computing services: including elastic cloud servers, GPU accelerated cloud servers, FPGA accelerated cloud servers, bare metal servers, dedicated computer clusters, dedicated hosts, as well as elastic scaling and mirroring services. The preceding cloud servers, dedicated computing clusters, and dedicated hosts all provide computing power, which can be compared to the various types of X86 servers in our traditional IT computer room to provide computing power for applications. Elastically scalable directional services are not computing services that provide computing power. Elastic scaling is based on the client's business load, the function of adding or reducing servers. The mirroring service is a service that provides a mirroring function. If a client has a mirror, it can be uploaded to a private mirror and installed on a cloud server.

Network service: It is a network service for computing instances, including elastic EIP to connect to the public network. EIP can be bound to services such as VPC, ECS, ELB, etc. to provide the ability to connect to the public network; there are also connections to data centers or other clouds VPN cloud dedicated line. Cloud dedicated line provides dedicated line interface. The dedicated line to connect to the client needs to be purchased from the operator or Alibaba cloud partner. VPN is an IPSec VPN, which follows standard protocols. If customers use standard IPSec VPN, they can directly connect to the Alibaba cloud through settings; DNS service provides domain name resolution, and requests can reach ten million times per second. For example, Alibaba Cloud's official website www.alibabacloud.com, we enter the domain name in the browser, and then initiate an access request, the request will be determined by the local DNS and DNS, etc. The final resolution rights, use Alibaba Cloud DNS service, Alibaba Cloud DNS service for final resolution , Provide the corresponding IP address of www.alibabacloud.com, and then feedback to the terminal through local DNS, the terminal presents the content in the browser when accessing the IP address; elastic load balancing, ELB is mainly to automatically distribute traffic to multiple cloud servers Service service capabilities; NAT gateway provides address translation capability to prevent cloud server addresses from being directly accessed; VPC virtual private cloud is an isolated and private network virtual environment on the cloud, which can be freely configured with VPC IP address segments.

Storage services: There are many types of storage services, the most important of which are block storage and object storage. Each cloud host requires a system disk, which is provided by block storage. There are also different IO types for block storage, such as normal IO, high IO, and ultra high IO. In addition to the system disk of the cloud host, the data disk is also provided by block storage, and different IO types can also be selected. Object storage is based on mass storage of objects. For example, there are many images in medical institutions, that is, X-ray images taken by patients. These images are stored in the IT system of the hospital. You can select the object store to back up the data. Of course, in addition to this, there are photo data storage and video data storage of some websites. In addition to object storage and block storage, there are also exclusive storage and exclusive enterprise storage, both of which are isolated and exclusive. Dedicated enterprise storage is a product configuration in a dedicated cloud solution. It cannot be purchased without a dedicated cloud, and there are no excessive restrictions on dedicated storage. In addition, there are flexible files, service data express service, cloud hard disk backup, cloud server backup, etc., not much to introduce here.

Finally, introduce the management and deployment services. Management and deployment are mainly to help customers simplify the management of various services on the cloud. The core is to save time, worry and cost. For example, the cloud monitoring service, unlike traditional IT, requires a separate monitoring system. In Alibaba cloud, you only need to activate the cloud monitoring service. After you set up the monitoring services you need, you will start automatic monitoring. With simple settings, you can fully understand Alibaba Resource usage on the cloud, business operations, etc.

The space is limited, other services do not introduce too much, you can log on to the official website of Alibaba Cloud to understand the functions and features of the service, or you can visit Alibaba Cloud Academy ( https://edu.alibabacloud.com/) to learn more courses ,thank you all.