Does docker belong to paas or iaas?

Docker belongs to the pass layer; docker is an open source application engine, paas is the abbreviation of "Platform as a Service", which refers to the software development platform as a service, and docker is provided by paas An advanced container engine based on LXC open sourced by dotCloub.

The operating environment of this tutorial: linux7.3 system, docker version 19.03, Dell G3 computer.

Docker belongs to paas or iaas

Docker belongs to the paas layer;

Docker is an open source application container engine that allows developers to package their applications and dependency packages to Virtualization can also be achieved by creating a portable image and publishing it to any popular Linux or Windows operating system machine.

PaaS is the abbreviation of (Platform as a Service), which refers to platform as a service.

The so-called PaaS actually refers to the software development platform as a service, submitted to users in the SaaS model. Therefore, PaaS is also an application of the SaaS model.

Pass is a concept, and now many companies have made Pass platform products (such as Cloud Foundry as a mainstream open source PaaS).

Docker is made using container technology. Pass can be made using containers or other technologies. And the Pass platform has more functions than docker. Docker can be regarded as completing one of the core functions of paas. Docker’s other deficiencies must be supplemented by other things (such as Kubernetes)

Pass is a concept, and now many companies have made Pass Platform products, (such as Cloud Foundry as a mainstream open source PaaS).

Expand knowledge

The functions and characteristics of paas

##Function

The reason why PaaS can promote the development of SaaS is mainly because it can provide enterprises with a middleware platform for customized research and development, covering databases and application servers. PaaS can increase the number of resources utilized on the Web platform. For example, you can use Data-as-a-Service through remote web services, you can also use visual APIs, and even PaaS platforms like 800app allow you to mix and match other platforms suitable for your application. . Users or manufacturers can quickly develop the applications and products they need based on the PaaS platform. At the same time, applications developed on PaaS platforms can better build enterprise applications based on SOA architecture.

In addition, PaaS can help SaaS operators diversify and customize their products. For example, Salesforce's PaaS platform allows more ISVs to become customers of its platform, thereby developing a variety of SaaS applications based on their platform, making it a diversified software service provider (Multi Application Vendor) instead of just a CRM. On-demand service provider. The domestic SaaS vendor 800app not only changed the market positioning of CRM suppliers through the PaaS platform, but also realized BTO (Built to order: production on order) and online delivery processes. Using 800app's PaaS development platform, users no longer need any programming to develop any enterprise management software including CRM, OA, HR, SCM, purchase, sale and inventory management, etc., and do not need to use other software development tools and run it online immediately.

Amazon, a giant company that provides personal EC sites (electronic commerce sites), rents out the system platform that was originally built for the operation of its own company. Users can freely choose the operating system and middleware. This method of providing hardware and software platforms as services was initially used by overseas venture companies. Starting in 2006 [Amazon EC] [Amazon S3] began to be marketed as a service.

There is also Google, the overlord of the modern software industry and a pioneer of next-generation computing. Everyone knows that it has built and operated many data centers in the world. Known for search engines as well as new advertising models. They use cheap computers, powerful middleware, and their own technology to equip the world's most powerful data centers and ultra-high-performance parallel computing clusters. The PaaS service [Google App Engine] released in April 2008 has similar functions to Amazon's EC2, S3, SimpleDB and other services. The same search engines, GMail and other services are also running on these stable platforms. Salesforce, which also succeeded with ASP~SaaS, began to make the system base for providing SaaS public in 2007, and started to enter the PaaS business under the name Force. The PaaS service he provides uses Java-like language Apex and Eclipse development platform, and the integrated development environment is also provided as a service (Development as a Service). The three software giants Google/Amazon/Salesforce attach great importance to the new business model of PaaS. Amazon's PaaS service provides more freedom for users to freely combine services. Google's words provide more services for users. It is easy to use and eliminates some tedious tasks. Google/Salesforce's PaaS not only provides basic hardware but also provides a development environment and is also provided as a true platform as a service (PaaS)

Features

PaaS can integrate various existing business capabilities, which can be classified into application servers, business capability access, business engines, and business open platforms. Basic service capabilities can be calculated based on business capability needs. The basic service capabilities provided through IaaS The API calls hardware resources, provides upward business dispatch center services, monitors various resources of the platform in real time, and opens these resources to SaaS users through the API. PaaS mainly has the following three characteristics:

(1) Platform as a Service: The most fundamental difference between the services provided by PaaS and other services is that PaaS provides a basic platform, but a certain application. In the traditional concept, the platform is the basis for providing external services. Generally speaking, a platform, as the basis for application system deployment, is built and maintained by application service providers. PaaS subverts this concept. A dedicated platform service provider builds and operates the basic platform, and uses the platform as Provide services to application system operators in the form of services;

(2) Platform and services: The services that PaaS operators need to provide are not only a simple basic platform, but also include technical support services for the platform. Even application system development, optimization and other services for the platform. PaaS operators know the basic platform they operate best, so the suggestions made by PaaS operators for application system optimization and improvement are also very important. In the development process of new application systems, the intervention of the PaaS operator's technical consultation and support team is also an important factor in ensuring the long-term and stable operation of the application system in future operations;

(3) Platform First-class services: The services provided by PaaS operators are different from other services. Behind this kind of service is a powerful and stable basic operation platform and a professional technical support team. This "platform-level" service can ensure long-term and stable operation of various application systems of SaaS or other software service providers. The essence of PaaS is to transform Internet resources into programmable interfaces to provide commercially valuable resources and service platforms for third-party developers. With the support of the PaaS platform, cloud computing developers have access to a large number of programmable elements. These programmable elements have specific business logic, which brings great convenience to development. It not only improves development efficiency, but also Save development costs. With the support of the PaaS platform, the development of WEB applications has become more agile, and the development ability to quickly respond to user needs has also brought tangible benefits to end users.

Recommended learning: "docker video tutorial"

The above is the detailed content of Does docker belong to paas or iaas?. For more information, please follow other related articles on the PHP Chinese website!