Networking for VMware Administrators (Anglais) Broché – 21 mars 2014
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Présentation de l'éditeur
The one-stop guide to modern networking for every VMware® administrator, engineer, and architect
Now that virtualization has blurred the lines between networking and servers, many VMware specialists need a stronger understanding of networks than they may have gained in earlier IT roles. Networking for VMware Administrators fills this crucial knowledge gap. Writing for VMware professionals, Christopher Wahl and Steve Pantol illuminate the core concepts of modern networking, and show how to apply them in designing, configuring, and troubleshooting any virtualized network environment.
Drawing on their extensive experience with a wide range of virtual network environments, the authors address physical networking, switching, storage networking, and several leading virtualization scenarios, including converged infrastructure.
Teaching through relevant examples, they focus on foundational concepts and features that will be valuable for years to come. To support rapid learning and mastery, they present clear learning objectives, questions, problems, a complete glossary, and extensive up-to-date references.
• The absolute basics: network models, layers, and interfaces, and why they matter
• Building networks that are less complex, more modular, and fully interoperable
• Improving your virtual network stack: tips, tricks, and techniques for avoiding common pitfalls
• Collaborating more effectively with network and storage professionals
• Understanding Ethernet, Advanced Layer 2, Layer 3, and modern converged infrastructure
• Mastering virtual switching and understanding how it differs from physical switching
• Designing and operating vSphere standard and distributed switching
• Working with third-party switches, including Cisco Nexus 1000V
• Creating powerful, resilient virtual networks to handle critical storage network traffic
• Deploying rackmount servers with 1 Gb and 10 Gb Ethernet
• Virtualizing blade servers with converged traffic and virtual NICs
Christopher Wahl has acquired well over a decade of IT experience in enterprise infrastructure design, implementation, and administration. He has provided architectural and engineering expertise in a variety of virtualization, data center, and private cloud based engagements while working with high performance technical teams in tiered data center environments. He currently holds the title of Senior Technical Architect at Ahead, a consulting firm based out of Chicago.
Steve Pantol has spent the last 14 years wearing various technical hats, with the last seven or so focused on assorted VMware technologies. He is a Senior Technical Architect at Ahead, working to build better datacenters and drive adoption of cloud technologies.
Biographie de l'auteur
Steve Pantol has spent the last 14 years wearing various technical hats, with the last seven or so focused on assorted VMware technologies. He holds numerous technical certifications and is working toward VCDX—if only to stop Wahl from lording it over him. He is a Senior Technical Architect at Ahead, working to build better data centers and drive adoption of cloud technologies.
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Clair, pédagogique et... parsemé d'humour ce qui ne gâte rien.
L'approche est comme je l'aime c-a-d qu'elle va crescendo du plus simple au plus compliqué. Des schémas ou des captures d'écran complètent bien une prose déjà claire.
Ré-expliquer les bases des réseaux (switching L2, routing L3....) a été un plus rafraichissant pour moi.
Seul regret, la partie NFS ne concerne que le montage des datastores sur les ESXi. J'aurais aimé trouver une partie sur le tuning NFS quand une VM monte un export sur un filer et connait des locks ou des ralentissements.
Globalement, je conseille ce livre a tous les administrateurs vsphere ou vcloud-director car même les plus experts apprendront quelque chose.
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BLUF: There isn't much content here for a VMware Administrator. Even less for Engineer or Architect-level folks.
vCNS/vShield isn't mentioned. VXLANs aren't mentioned. SDN isn't mentioned, which I can understand since this is an Administrative guide, but NSX wasn't mentioned either. The scope of this book really is limited to just vSphere.
Chapters 1-6: Could have been cut and paste out of any networking 101 or Wikipedia article on networking basics. Other than passing mention of Nutanix's hyper-converged platform, these chapters offer little value to either a networking admin or a VMware admin.
Chapter 7 (How Virtual Switching Differs from Physical Switching): Useful for someone unfamiliar with VMware.
Chapters 8-10: Light on content, other than definitions of very basic concepts like what a VLAN is, what a VMkernel Port is, etc. At this point we're 135pgs into the book and we haven't touched a single thing that a low-level administrator (network or otherwise) can't rattle off in his sleep.
To say I'm disappointed is an understatement, but maybe we can still have some redemption in the second half of the book.
Chapter 11 (Lab Scenario): More definitions, a screen grab of the VLANs from UCS manager, and a picture of the summary tab of an ESXi 5.5 host, taken from the web client. Is this to prove that the authors have access to a server? I don't understand why they are wasting so many pages saying NOTHING!
Chapter 12 (Standard vSwitch Design): Importance of establishing naming conventions, and building a standard vSwitch that will carry all management and virtual machine traffic using 4 portgroups and 2 NICs. There is also mention of the VMkernel port req'd for NFS traffic. More on these topics later in the book though.
Chapter 13 (vDS design): Worthwhile chapter on how to build a distributed vSwitch.
Chapters 14 and 15 (iSCSI considerations): Definitions and basic configuration. Nothing new here.
Chapters 16 & 17 (NFS overview): Good chapters on how VMware handles NFS traffic and how to do a basic configuration.
Chapter 18 (additional vSwitch Design Scenarios): vSwitch design suggestions for hosts that have more than 2 physical NICs.
Chapter 19 (Multi-NIC vMotion Architecture): Interesting chapter on a concept I don't often think about.
End of the book.
The book starts out at from a really basic level explaining OSI, what a protocol is etc. and builds on the foundation set out as it progresses. Part I of the book gives are really good explanation of not only the basics of networking, but a lot of the “why” as well. If you’ve done CCNA level networking exams then you will know most of this stuff – but it’s always good to refresh, and maybe cover any gaps.
Part II of the book translates the foundations set out in Part I into the virtual world and takes you through the similarities and differences with between virtual and physical. It gives a good overview of the vSphere Standard Switch (VSS) and vSphere Distributed Switch (vDS) and even has a chapter on the Cisco 1000v. One of the really useful parts of the book are the lab examples and designs, which takes you though the design process and considerations to get to the solution.
Part III is an excellent and detailed section on storage networking covering networks for iSCSI and NFS, and design and configuration of both – with use cases. If you’ve not had much experience with these protocols in a production environment then this section will be a fantastic resource.
Part IV is labelled “Other Design Scenarios” and contains a lot of reference storage design examples based on numbers of NICs available in a host and whether that includes IP based storage – again, another really useful resource.
I really like the writing style that the authors have used, there’s enough humour and anecdotal/real world reference to drag it out of the “pure technical” category and help engage the reader, without detracting from the sheer volume of information that’s contained in the book.
Throughout the book there are lots of clear diagrams which help to explain and expand on the text, and again improve the readability of the book.
I would recommend this to any VMware administrator with responsibility for designing and managing VMware networking – and also perhaps some network administrators who work with a VMware team. It will give insight into how the two relate to each other. I’d probably even recommend it to storage administrators who manage iSCSI and NFS storage networks with VMware.
There are parts of the book that were really basic and, I have to confess, I skipped over – but as I mentioned before I have a fair amount of networking experience. But there is also enough meat on the bones to make the book worthwhile and a great resource for your bookshelf.
Networking for VMware Administrators is available on Amazon in both paper and kindle versions:
* Full disclosure – I was sent a copy of the book for review, I will receive no reward for this and the review is my own honest thoughts and opinion.
First things first, the biggest achievement of this book was to hold my attention throughout its entire duration. Even when covering some relatively non-glamorous, yet essential, topics it did not, at any point become too dry and make me lose interest. The authors have a slightly humorous yet non-flippant style that keeps you reading and entertained yet doesn’t skimp on the content.
In terms of technical detail the most interesting part for me by far were the use cases. The authors talk you through multiple different permutations of network adapters and port requirements across both vSphere standard and distributed switches, in each case allowing you to put together a resilient and performant design. I’ve been reading about these things for years now but rarely have I seen the info collated together so concisely in one place with proper justifications that actually make sense. I now confidently feel I could design vSphere host networking in most common configurations and make informed choices, justifying their selection. The other one that was great for me was the description of the different options for networking to NFS storage and getting around the lack of multipathing. I was faced with this issue with a client last year and literally spent countless hours combing google for good answers on this, turning up very little that made sense, but finally now it was summarised for me in a handful of pages. Thirdly it has an excellent section on multi-nic vmotion.
If I could make some suggestions for what I would have liked to see then maybe it would have been good to see some highly detailed packet-walks for traffic between VMs within/between hosts across the physical network and the processes that take place. In addition I was surprised to not see at least a one-pager at the end about network virtualisation and the future of virtual data centre networking, although I realise this was not within the scope of the book. Having said that I used this text as a primer before hitting an NSX bootcamp at VMware and it really helped me prepare for/survive the, rather intense, training. Overall I’m very impressed with this book and it’s definitely one of the best that I have in my library now. Highly recommended and I’m sure anyone who works in this field and knows the quality of the authors will be buying anyway. I’m off to start my second read…(this doesn't happen often)