Operation and maintenance of senior financial circles with you "VMware NSX entry to the combat" , get a set of network virtualization solutions NSX

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1, cloud development process briefly

The first launch from AWS in 2006 EC2 (Elastic Compute Cloud) now, cloud computing has officially gone through more than a decade of circumstances. In the past decade, technology updates each passing day, a new concept after another, but from now on, one of the most popular cloud computing technologies and concepts still definitely among the best. Of course, cloud computing also does not refer to a purely technical, it's just a concept, the idea is popular IAAS infrastructure resources like water plant tap water, we can always water to use according to their needs, according to their final amount to pay.

Of course, a business or technology from generation to rise and then brilliant, always there for each phase, cloud computing is no exception, I think the rise of cloud computing thanks to the popularity of server virtualization technology, the server virtualization technology is the data center a revolutionary technology in the field of server virtualization technology have revolutionized the traditional data center architecture, enable iT personnel and businesses truly feel its benefits. In this one, no doubt that VMware's vSphere (ESXi and includes its predecessor --ESX and GSX) is a server virtualization technology leader in the real revolutionaries and, after this, the server virtualization technology into the thousands ten million million SMEs, with tempered with the test of time, more and more companies embrace server virtualization technology. As good as the building needs a good foundation, the foundation of cloud computing is server virtualization, server virtualization is the technology widely available to cloud computing needs and heat increasingly popular.

1.1 Rise and Development

VMware vSphere is launched in 2009, until the popularity of server virtualization technology has entered the 10's. The advent of cloud computing the wave but also to the world's major IT companies see new opportunities. January 2010, Microsoft officially released the Microsoft Azure platform, 2009 also saw the opportunity to set up Ali Ali cloud, but already well-known to grow up to be a matter of a few years later. With the advent of public cloud vendors frequent operation, and other new technologies, the data center (network and storage), the wave of the cloud has not rolling forward as the surging river barrier.

In the first half of the 10's, a variety of standard cloud of controversy, public / private cloud of controversy, and so never stop, during which, along with the open source project Openstack (2010 released in October the first version Austin) hot , all walks of life to explore the development of cloud computing users with their own exploration together. In the process we explore, the three large areas of cloud computing data center - compute, network, storage requirements are also more and more, every piece of the importance of the balance is gradually, we began to clearly recognize the underlying importance. Like the house, the foundation is very important, other steel structure is also very important.

1.2, mature and cooperation

Until 10 years into the second half, most insiders already have a clear understanding of cloud computing and understand, more and more users are also clearly aware of their needs what kind of cloud, rather than to the cloud and the cloud. Since cloud computing is the top, the bottom is three large data centers - computing, networking, storage, then what kind of data center it is more suited for the cloud? What kind of data centers is more suitable for the majority of users? To solve these problems, VMware introduced a new concept --SDDC (Software-Defined Data Center) in 2016, the underlying technology is supported by its own server virtualization (vSphere), network virtualization (NSX), storage virtualization (vSAN), While virtualization technology in various fields have other products, but the company that can provide a full range of virtualization solutions products company so far only VMware one, this is it launched emboldened this concept, SDDC, once introduced, quickly swept across the data center, It has become the next-generation data center architecture standards.

Also in the second half of the 1910s, public / private clouds gradually into areas of cooperation. In the first half of the 10's, the major IT vendors to determine the future trend of cloud computing is not clear, and some just want to expand their own, some want to grab two, until the second half of the 1910s, this trend is already evident - cooperation can be a win-win. 2017, VMware sold his public cloud vCloud Air, the saying goes, a good cook does not have to do it yourself-star hotel, perhaps he opened a small restaurant or cook a special way to better help others. The second half of 2017, VMware announced a partnership with AWS, 2018 and 2019, VMware have announced a partnership with Microsoft, Alibaba, Tencent and other public cloud vendors.

Up to now, the public / private cloud debate is no longer, it is all clear on what your company needs a cloud. Most small and medium companies may select all the public cloud based on cost considerations, and more than some other medium-sized companies based on their own data security level meeting may consider private or hybrid cloud (such as may be placed on the front WEB class public cloud, enjoy public cloud CDN and other convenient back-end database category on their own private cloud within the data center).

In 10 years of this decade, Openstack undoubtedly the promotion and development of cloud computing has made tremendous contributions to this decade, numerous cloud computing vendors are springing up, and then a group of a group to promote the billowing cloud computing .

2, cloud computing IT technical staff under the age of

2.1, the impact of cloud computing on IT technical staff

Although cloud computing is an infrastructure data center introduced the concept, but as it matures, the scope of the impact of more widely. The first reason is the infrastructure in the field of IT staff, no matter which side technology before you are biased, cloud computing requires everyone toward the direction of complex technology continues to progress, this trend is also software-defined. That requirement for IT staff more widely, more and more, regardless of the field of development or operation and maintenance areas, changing times is the need for IT staff to master more and more skilled, full-stack engineer is no longer a slogan, this is also the key to the rise of DevOps.

Industry, the field of non-infrastructure related personnel followed the impact of this year, will not or do not understand the point of cloud computing, whether it is to enhance the capacity of individuals, or prospect is a short board. Cloud computing push it toward the era of big data forward, also contributed to everyone to use, understand, learn it.

2.2, cloud computing era IT technician what to do

Since the flood of times rolling forward, we can do is adapt to the times, to keep pace with the times. As the saying goes survival of the fittest, is expected in the foreseeable future, not suited to this wave of people who will eventually become obsolete.

Many people say, "2019 is the next best year in 10 years." According to the survey in late 2019, 2017 ~ 2019, the ratio will get a year-end awards have been declining from 2019 to refrain Think about it, the form has been very severe. As we bid farewell to 2019 entered 2020, already it was a bad start, so the test of time has only just begun.

In this vast background, we consider everyone, of course, is how to survive good, since as IT technicians, more staff replacement pressure, after all, your confidence comes from your technical ability. Now that we have said earlier that the current era of cloud computing, cloud computing so learning course is the right choice, especially learning for IT professionals in the field of infrastructure for cloud computing is an inevitable requirement. Of course, the building needs to establish a good foundation, we also mentioned earlier that the underlying cloud computing data center three blocks - computing, networking, storage. And now cloud computing requires more than just the older generation of data centers, but a new generation of SDDC (software-defined data center), which requires us to master server virtualization, storage virtualization and network virtualization technologies, server virtualization technology after so many years of popularity, I believe we are not unfamiliar, and network virtualization technology is the key to all this is connected, and it is difficult technology, so this is on me for the purpose of this column.

3, the contents of this section, basic knowledge requirements and harvest

This column mainly on network virtualization product VMware NSX, by this product to explain network virtualization technology, after all, the technical concept is the same, to understand this product, even if followed by other solutions are also very easy to use. Why I would choose for it in many network virtualization products to explain, in the first chapter of this column I have to explain (NSX advantage), here it is not to make too much exposition.

3.1 learn the basics of the requirements of this section requires

Since the front of the talked about network virtualization foundation for cloud computing is the connection, then we need to use a lot of basic environment, and NSX is a relatively high level of technology, so the basic knowledge required is relatively large, where both of our requirements, but also our ascending. So, the basics need NSX, as follows:

(1) physical server installation
(2) storing knowledge
(3) based network (Internet, firewalls, load balancers, etc.) knowledge
(4) AD / DNS / NTP / Syslog server installation configuration
(5) server virtualization installation configuration and architecture design
(6) OS (Linux / Windows ) related knowledge
(7) common applications (such as Apache, etc.) installation and configuration

This section also in each chapter to do some explaining and configuration knowledge, but because of space problems, some relatively simple as the physical server installation configuration, etc. will simply skip.

Of course, as network virtualization technology, with the knowledge of the associated network and largest, where many students might ask me to understand some basic knowledge of the network, not how to configure any specific physical network devices, and even some students no knowledge of network infrastructure, these conditions are also suitable for learning this section? Here the author responsibly tell you, these can be. This section will have basic knowledge of the network and related infrastructure to make clearer explanation, as long as we understand the principles, but also how to learn a relatively simple and can be more effective configuration; and the practical operation of the various aspects of this section of chapter shots were dozens above, the relevant instructions also very fine, also marks the screenshot indicates, to facilitate understanding of the principles at the same time can be hands-on teaching you how to configure, absolutely full of dry goods and careful guidance.

3.2 learnings of this section

NSX network virtualization technology in VMware's products can be considered relatively high, after the harvest for us this technology under study.

(1) understand the cloud network virtualization role
since it is the cloud network virtualization needs, then its existence must be to address some of the needs and problems of cloud computing network, the first chapter in this section of this point there are specific explanation. IT technicians can occasionally enter such a misunderstanding: know how to operate, but do not know the reason behind it. Do detailed explanation in the first chapter of the problems we encountered and the development of the network, and then come out Why VXLAN technology, the idea of this technology is how to source, that this technology is how to achieve. Then why can play a major role in the network virtualization technology for a wide variety of classified than VXLAN technology, understanding.

(2) better understand and learn cloud computing
rise of network virtualization technology, mainly problems of cloud computing highlight, since the master network virtualization technology, cloud computing and that will be one step closer to understanding, after all virtual network cloud computing is one of the bottom three blocks, as long as the master network virtualization technology, the company later on line cloud platform, the underlying architecture designed to meet the company's cloud platform will be more handy, will not lay more risks.

(3) a deeper understanding of the underlying vSphere
Now Network virtualization is connected to the role, then the underlying computing virtualization is the foundation, NSX has products for different underlying Hypervisor of this section to the general vSphere underlying basis, when the underlying use vSphere need to meet some requirements (such as clustering, VDS) to function properly deployed using NSX, in the course of the experiment we deploy and test step by step, we can better understand and grasp the underlying vSphere, which base is weak students is also very good .

(4) SDDC understand and grasp the underlying architecture and design
since SDDC (software-defined data center) is a next-generation data center architecture standards, but also more suitable for cloud computing. NSX needs of server virtualization, itself belongs to another NSX network virtualization, we learned this section will study the underlying SDDC two blocks, then for technological upgrading is quite large.

We can design the architecture for the implementation of the production environment and the deployment of direct addition of this column to the whole real physical environment in the second, four chapters explain to you how to design a data center architecture and how to produce flexible, learning later.

(5) mastered the mainstream of network virtualization technology and a more in-depth understanding of network knowledge
this column will do basic networking knowledge in detail, and learning this section, also on the knowledge of network infrastructure (network, firewall, load balancing, etc.) there are more in-depth understanding, because not only can be achieved by NSX VXLAN big story, it also supports static and dynamic routing (OSPF dynamic routing support and BGP), logic firewall (firewall support stuff and north-south direction), logic load balancing (soft function LB) and a series of network hardware equipment, functions and knowledge NSX cover all aspects related to the network level.

Although this column is to explain the NSX, but its use is still to achieve a large two-story carry handle technical --VXLAN, this technology is also presented along with Cisco and VMware to now SDN solution either hard or soft SDN SDN, the core technology are VXLAN, once you have mastered the NSX will also be able VXLAN technology, in addition to other features of the NSX in the above-mentioned principles are mostly the same as each product. Late regardless of their data center solutions which can quickly get started. In addition the section of the first chapter there are hard and soft do distinguish explains and illustrates the advantages of the NSX, are very good to help you assess and even late design.

(6) be familiar with other relevant knowledge points
of the third and fourth chapters are both practical operation and scenario testing, which will involve OS (Windows / Linux), applications (Apache, Nginx, etc.), etc. Also in the building when the bottom of this column also need the support of a series of basic environmental AD / DNS / NTP / Syslog, etc., although this column because the focus is not exhaustive, but some of the requirements and configuration of this column will mention, but also facilitate them to learn and understand the relevant knowledge points .

3.3 This section describes the contents of a directory

The following detailed catalog columns, you can find this end, the practical operation and a large part of the scene Section proportion, and this section uses all real physical devices (physical servers, network equipment, enterprise FC storage) and with the latest version of the NSX 6.4.6 (as of mid-January 2020), I believe this section will definitely help.