Resource management, high availability and automation (Part 2)

Cloud computing is essentially a multi module service provider API A combination of interconnected programs and platforms .

In a software defined Cloud Computing Center , Calculation 、 The Internet 、 Storage implementations have evolved into service-oriented （ Everything is service ） Model of , The centralized controller of each module is provided to the outside API, Make the module programmable , And the controller makes each module have the function of central control , Enables centralized deployment of automated workflows , Centralized control .

and , With the opening of the control interface of the controller of each module 、 Flexibility and standardization , Automated workflows will also move towards standardization , Enable workflow to cross platform , Cross vendor use . Software defined storage solutions Ceph And ViPR/CoprHD For example , Both allow access to third-party storage systems in a standardized manner , So as to provide a unified SDS Management platform .

Through the hardware of the data center 、 Software and process coordination and combination , Create a custom workflow , Help automate... Across multiple modules IT System management process , In order to improve the IT Operation level . Automation in the data center eliminates most manual processes , help IT Operation and IT The service management team provides services from design to operation and maintenance （ See the picture below ）.

Automation of the data center （ workflow ） It can span multiple modules , Multiple services to deploy and implement , In the current data center , You can calculate 、 The Internet 、 Storage 、 Safety and M&O And so on .

Automatic operation and maintenance of data center

Software installation ： Software installation centrally manages server operating system media and installation scripts , Batch installation of multiple operating systems , Include Windows、Linux、Solaris、AIX、ESX etc. . It can realize unified server management across operating systems , For physics 、 Virtual and public cloud infrastructures provide unified support , This includes bare metal installation 、 Out of the box capabilities for application deployment and system configuration . With software packaging and OS Install management functions ,IT The team can standardize the service deployment tasks , And improve consistency , Shorten the supply cycle .

· Patch management ： Patch management centralized management of server patch media , Analyze the current patch list , Provide patch recommendations to be installed , And distribute patches in batches .

· Configuration automation ： Configuration automation generally has the functions of change detection and configuration compliance inspection . Users can create configuration baselines , Use it to compare servers . The configuration baseline is the correct configuration and setup information specified by the administrator for a specific environment . A server can have multiple configuration baselines . After the user specifies the configuration baseline , This configuration baseline can be used to compare the differences between servers , And see the comparison results . The comparison results will show the components installed on each server and the differences between the two servers .

· System configuration and topology discovery ： In a variety of operating systems to batch 、 Automatic parameter adjustment . for example , Network policy configuration , It can automatically distribute routing tables and firewall policies in batches . Data center automation can realize automatic discovery and collection of network equipment configuration , Such as equipment type 、 Model of equipment 、 Hardware information 、 Operating system version 、startup config、running config、VLAN etc. , And track their changes .

· Operational audit ： Automatically record all changes to network devices , And provide a fallback mechanism .

· Automatic inspection ： It can automatically collect various software and hardware information and generate reports , Including the manufacturer of the server 、 model 、BIOS、 card 、 Storage 、 Operating system version 、 Software list 、 Patch list 、 Security Settings 、 Model of the network 、 modular 、 edition 、 A launch configuration 、 Operation configuration, etc .

· virtual machine 、 Container operation ： It can automate the creation of virtual machines 、 To configure 、 Delete 、 Migration, etc .

·  Patrol inspection and compliance inspection ： Through the built-in compliance check policy , in the light of CIS、DISA、NSA, For the system 、 Automatic compliance check of equipment, etc , And provide inspection report . Users can also define their own compliance policies .

Through the technology of data center automation , We encapsulate the tedious work of managing physical infrastructure and applications in a hierarchical manner IaaS And PaaS In the system , So we can focus on innovation and provide value for the enterprise .

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At the end of this section , Let's review the era of cloud and big data IT Major trends in Architecture 、 Features and core components ：

· Key trends ： Software Defined Data Center 、 Service based architecture （SoA、API-driven）.

· The main features ：

· automation （ Process and resource management ）;

· High availability ;

· elastic + agility ;

· Fine management （ monitor 、 charging 、 Multi tenant support, etc ）.

· Core components （ As shown in the figure below ）：

chart 3-42 SDDC Layered service architecture and core components

· Software defined calculations ;

· Storage of software definitions ;

· Software defined networks ;

· SDDC Security ;

· SDDC M&O（ Management and arrangement ）

5 Large core components and diagrams （ Upper figure ） And the following corresponding relationships exist in each layer of the technology stack shown in the figure below ：

· IaaS： Access calculation 、 Storage 、 Network hardware equipment , And virtualized 、 Abstract software 、 The programmable interface is provided upwards .

· PaaS（ Platform management + Cloud service layer ）： On the upper （ application 、 user ） Provide various elastic service interfaces ; To the lower layer （ infrastructure ） Implement automatic deployment and operation and maintenance .

·  application layer ： Call the services provided by the bottom layer 、 Programming interface (API) , Provide a management center for administrators and users at all levels （Control Center、Management Console）.

Logical architecture diagram of five components of data center defined by software

In subsequent chapters , We will discuss how to build extensible 、 Service driven big data and cloud platform are discussed .

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