Devops-3 cloud computing and cloud era operation and maintenance

lec2- Cloud computing and cloud era operation and maintenance

1. From cloud computing (Cloud Computing) Talking about

1. Cloud computing is a pay as you go model , This model can provide available 、 The boundary of the 、 Sequential network access , Enter the configurable pool of computing resources ( Resources include The Internet 、 The server 、 Storage 、 Application software 、 service ), These resources can be provided quickly , Just a little management work , Or have little interaction with service providers .
2. Kanghui rule ： Software is determined by the team structure that develops the software

2. XaaS - X as Service

1. It means that everything serves , It is a general designation (anything as s Service or everything as a Service )
2. XaaS It emphasizes that the downstream provides services to the upstream in accordance with the contract , Hide implementation details , And it usually provides services through the network , for example ,SaaS,CaaS(Communication as a Service)、 NaaS(Network as a Service)、DaaS(Development as a Service);Desktop as a Service)、MaaS (Monitoring as a Service);

2.1. The three most typical XaaS

1. Software as a Service (SaaS) Software as a service , Software distribution method , Centralization , Services for users to subscribe to .
2. Infrastructure as a Service (IaaS) Infrastructure and services , virtualization , Users need to configure and deploy middleware and application services .
3. Platform as a service (PaaS) Platform as a service , The service provider provides the overall environment for development .

2.2. build by oneself 、IaaS、PaaS as well as SaaS difference

1. Editing documents online is SaaS

2.3. Edge of computing

1. Cloud computing and edge computing
2. Low delay 、 high reliability 、 Requirements for energy consumption and data security , for example
   1. Video surveillance
   2. Smart home
   3. Smart city
   4. Intelligent Transportation

2.4. Fog calculation

3. IT Service standard

1. DevOps in "Ops" The most common form of client is to provide various services to users , therefore , Certain standards and requirements shall be followed
   1. CMMI-SVC
   2. ITIL
   3. ISO20000
   4. ITSS

3.1. CMMI-SVC

3.2. ITIL Introduction to service standards

1. ITIL Full name Information Technology Infrastructure Library（ IT Infrastructure Library ）
2. ITIL Best practices revolve around 5 Parts of ：
   1. Service strategy
   2. Service design
   3. Service transformation
   4. Service operations
   5. Service improvement

3.3. ISO20000

1. ISO20000 It is the first document on information technology service management issued by the international organization for standardization (IT Service Management) International standards in the field
2. ISO20000 Defined " planning - The implementation of - Check - Management II(PDCA) Methodology applied to service management system (SMS) And all parts of the service ：
   1. P- planning ： Establish a written and agreed service management system ;
   2. D- The implementation of ： Implement and operate the service management system , In order to design 、 transformation 、 Deliver and improve services ;
   3. C- Check ： According to the policy 、 The goal is 、 Planning and service requirements , Monitor the service management system 、 Measure and review , And report the results ;
   4. A- Management ： Take measures to , To continuously improve the service management system and service performance .

3.4. ITSS

1. It service standards (Information Technology Service Standards, abbreviation ITSS) It is a set of systematic and comprehensive information technology service standard library

4. Let's talk about operation and maintenance

1. Operation and maintenance mainly refers to the release and management of software system after test delivery , Its core goal is to integrate the delivered business software and hardware infrastructure efficiently and reasonably , Convert to products that provide sustainable high-quality services , At the same time, minimize the cost of service operation , Ensure the safety of service operation
   1. Provide low cost 、 High-quality 、 high efficiency 、 Scalable basic operation and maintenance services , Ensure the continuous and stable operation of business .
   2. Through the mining of operation and maintenance data 、 analysis , Provide decision support for business development direction , That is, the operation of the business system .
   3. Package the O & M resources and technologies into basic IT Computing services , Providing services to external customers , Further create value for the enterprise .

4.1. The transformation of traditional operation and maintenance

1. Internet based operation and maintenance ： Fast iteration 、 Fast release 、 Grayscale Publishing 、 Security
2. Operation and maintenance under cloud computing ： Operation and maintenance of cloud computing system itself and application system based on cloud computing ; Rapid deployment 、 Quick update 、 Real-time monitoring 、 automation 、 Dynamically expand or reduce system deployment 、 Adapt to platform differences
3. Large scale operation and maintenance ： Standardization 、 automation 、 Intelligent
4. " advance " Operation and maintenance ： Monitoring of intervention system 、 Design of operability ; Advance the system monitoring and operation and maintenance interface design to the software development and design stage