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Table of contents
1. Cloud computing classification
2. Cloud computing application environment
5. Development and testing cloud
6. Large-scale data processing cloud
3. Mainstream cloud computing products
write in front
This series will continue to update the study of cloud computing Alibaba Cloud ACA, to understand the basic knowledge of cloud computing and network security related industries, as well as the use and deployment of Alibaba Cloud products. Improve personal understanding of cloud computing product technology.
Alibaba Cloud Computing Assistant Engineer Certification (ACA - Alibaba Cloud Certification Associate) is a professional technical certification for the use of Alibaba Cloud's basic products. It mainly involves Alibaba Cloud's core products of computing, storage, network, cloud database, and security. It is for students A comprehensive examination and competency certification to master the technical skills of Alibaba Cloud's main products. It is mainly aimed at students and developers. It can also be used as an entry certificate for operation and maintenance personnel.
Early review
Cloud Computing – ACA Learning Data Center Overview
Cloud Computing - ACA Learning Cloud Computing Overview
Cloud Computing - ACA learns the core technology of cloud computing
Introduction to this issue
Understand the classification system of cloud computing, understand cloud computing application scenarios, and understand mainstream cloud products.
1. Cloud computing classification
1. Public cloud
Public cloud is a cloud service open to the public and operated by a cloud service provider - providing IT resources to users.
Supports concurrent requests from large numbers of users.
advantage:
- Large Scale: Aggregate large-scale workloads from society.
- Low price: Pay as you go without the need for large upfront investments and lengthy construction processes.
- Flexible: Public cloud capacity can be expanded almost infinitely to flexibly meet user needs
- Comprehensive functionality: supports multiple operating systems and applications
shortcoming:
Data security and privacy issues.
2. Private cloud
The construction of private cloud should be completed within a certain organization or enterprise——》The service object is (within the organization)
Whoever the ownership is given to will be responsible for daily management
(1) Local private cloud
The cloud is deployed within the enterprise, and everything is controlled by the enterprise——》Security and network security
Local private clouds are suitable for running critical applications in the enterprise.
(2) Hosted private cloud
Host the cloud in a third-party computer room or other cloud - "Computing equipment can be purchased by yourself, or you can rent technical resources from a third-party cloud.
General use by enterprises
①Establish a connection between the dedicated line and the hosted cloud
②Use the overlay network to establish a VPN online to reduce dedicated line costs.
advantage:
Data security: The private cloud is in the enterprise's internal network to prevent the network from being exposed to the public network
Quality of Service (QoS): The private cloud is within the company, and when company personnel access the private cloud, the service quality should be very stable.
Make full use of existing hardware resources: Use the company's low-utilization resource hardware to build a private cloud
Support customized and legacy applications: Private cloud can avoid the mainstream application supported by public cloud and affect the deployment of mainframe and other applications by enterprises.
Does not affect existing IT management processes: IT departments can fully control the private cloud and better integrate with existing processes
shortcoming:
High cost: establishing a private cloud requires high initial costs
High operating costs: Internal maintenance of the enterprise requires a professional cloud computing team
3. Community cloud
Community cloud service users——Specific scope group, neither public nor a unit, somewhere in between.
The cost is shared, and the cost saving effect is not significant.
Community cloud services are jointly managed and provided by several companies for their own use.
4. Hybrid cloud
Hybrid cloud, as you can see from the literal meaning, is composed of two or more different types of clouds (private cloud, community cloud, public cloud). It is not a specific single cloud. The computing presented to the outside world Resources come from two or more clouds, but a hybrid cloud management layer is added.
Cloud service consumers -> hybrid cloud management platform uses resources (it feels like using the same cloud resources) -> is routed to the real cloud.
advantage:
The architecture is more flexible: the most suitable resources can be allocated more flexibly according to the importance of the load.
The technical aspect is easier to master: you can master the private cloud by yourself according to the actual situation of the company.
Make full use of existing hardware resources: have the confidentiality of a private cloud and the disaster resistance of a public cloud
Lower costs: Rent third-party resources to smooth seasonal resource demand peaks in short periods of time
2. Cloud computing application environment
1. IDC Public Cloud
Traditional IDC cannot meet user needs, so the IDC public cloud was born.
IDC public cloud adds cloud genes such as system virtualization, automated management, and energy monitoring to the original IDC . Through IDC's cloud platform, users can use resources such as virtual machines and storage.
Original IDC——》Introducing new cloud technology to provide PaaS services
Now the IDC public cloud has taken shape including Amazon’s AWS and Alibaba Cloud ECS
2. Enterprise private cloud
Enterprise private cloud helps enterprises improve the operation and maintenance level of internal data centers.
From the past thinking of software and hardware to focusing on providing services
Advantages and Disadvantages of Enterprise Private Cloud:
- Build flexibility and data security
- High maintenance costs, building a professional technical team
3. Cloud storage system
The cloud storage system can reduce the data loss rate, provide external cloud storage services by integrating multiple storage devices in the network, and perform data archiving, backup, copying, and archiving.
Practical groups: Internet companies, telecommunications companies, and netizens.
Products: China Telecom's E Cloud, Baidu Netdisk, Alibaba Netdisk, Alibaba Cloud Object Storage, Amazon's S3 cloud storage.
4. Virtual desktop cloud
Compared with traditional desktop systems, virtual desktop cloud has higher stability and flexibility, and reduces the overall cost of the terminal desktop system.
Technology used: Desktop virtualization technology
Decouple the user desktop from the terminal - store and run each user's desktop environment in the form of a mirror on the server side.
Related products: citrix, VMware, Alibaba Cloud Shadowless Cloud Desktop
5. Development and testing cloud
The development and testing cloud can reserve, deploy, manage and recycle the entire development and testing environment through a friendly web interface, thereby solving thorny problems in the development and testing process.
6. Large-scale data processing cloud
Large-scale data processing cloud can process overseas data on a large scale, quickly conduct data analysis for enterprises, and discover existing business opportunities and existing problems.
3. Mainstream cloud computing products
Open source series
1.OpenStack
OpenStack is an open source cloud computing management platform project. It is an open source project that mainly provides software for public cloud and private cloud construction and management. It is not a software, but a combination of a series of open source projects. Developed and initiated by NASA (National Aeronautics and Space Administration) and Rackspace, it is currently an Apache top-level project.
2.K8S
Kubernetes is a portable, scalable, open source cloud platform for managing containerized workloads and services that facilitates declarative configuration and automation. Kubernetes has a large and rapidly growing ecosystem with a wide range of services, support, and tools.
Paid cloud products
1.Alibaba Cloud products
Alibaba Cloud ECS, IaaS-level cloud computing service, has the characteristics of excellent performance, stability, reliability, and elastic expansion.
Object Storage OSS (Object Storage Service) is a massive, secure, low-cost, and highly reliable cloud storage service.
2.Tencent Cloud TStack
Tencent Cloud TStack is an enterprise-level privatized full-stack cloud solution that Tencent has accumulated and polished during the rapid development of its Internet business. It provides comprehensive cloud services of IaaS, PaaS and SaaS that meet the domestic mainstream architecture; multiple deployment methods, flexible and controllable, He has a lot of implementation experience in government and large and medium-sized enterprises.
3. Huawei Cloud Conference
Combined with a full range of intelligent collaboration terminals such as Huawei Cloud Conference Portal, it provides customers with a full range of end-to-end and cloud collaborative video conferencing solutions to meet the needs for intelligent communication and collaboration across regions, enterprises, and terminals.
It supports the access of various terminals such as mobile phones, computers, tablets, Huawei video terminals, smart large screens, third-party conference terminals, etc., and provides customers with a cloud conference solution that covers all scenarios, is easy to use, is quickly deployed, and integrates software and hardware.