Tag Archive for lonvmug

End of an Era for #LonVMUG

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I will keep this post short and to the point, and will do my best to try not to sound too sycophantic!

I just wanted to publicly thank Alaric Davies, Jane Rimmer, and Stu Thompson for their years of hard work and service to the London and UK VMUGs and all of their members (and of course, not forgetting Simon Gallagher who is staying on to steer the ship). Were it not for a chance meeting with Mr Davies at a tech event in Leeds some years ago, I personally would know a lot less, have met far fewer awesome people and be in a completely different place in my career right now.

The London and UK VMUGs have had a real impact on the careers of many people I know over the past few years and I hope they continue to do so for years to come!

So thank you very much all of you for your immense efforts and the hundreds of hours of your own time you have dedicated over the years…

Team Awesome

Lastly best of luck to the new VMUG leadership team members Linda, Dave and Chris, who along with Simon I have every confidence that the torch will be carried on without so much as a splutter!

If you want to get involved in the VMUG community as an attendee (and perhaps one day as a speaker), I strongly recommend popping along to your nearest meeting. You will definitely come away with a lot more than just the instructions on how to upgrade vSphere from 5.1 to 6.0! 😉

The next London VMUG is on the 14th of April at Tech UK, 10 Saint Bride Street, EC4A. I look forward to meeting you there!

VMworld Europe 2015 Day Three Roundup

Day three was quite simply Cloud Native Apps day for me!

I began in the morning with an internal partner briefing with some of the guys in the CNA team. Needless to say this was really interesting and for me it was a total nerdgasm! I did get a real sense that VMware are certainly not planning to get left behind in this new era, in fact far from it as some of their future plans will push the boundaries of what is already bleeding edge today. For the Pratchett fans amongst you, I would suggest that we are indeed living in Interesting Times!

Immediately following this I legged it down to Hall 8 for the CNA panel session, hosted by VMware CTO Joe Baguley, and featuring some regular faces from the London VMUG including Robbie Jerrom and Andy Jenkins. One of the interesting discussions which came up was about DevOps. DevOps is a nice vision, but developers today understand code, point them at a faulty storage array and they will look at you blankly… There is a skills gap there!

If the entire world is expected to become more DevOps focussed, Infrastructure will have to become a hell of a lot easier, or everything will need to just move to the public cloud. The reverse holds true of course, point most infra guys at something much more complex than a PowerShell / Bash / Perl script and you’re asking for trouble.

A true DevOps culture will require people with a very particular set of skills. Skills they have acquired over a very long career. Skills that make them a nightmare for… (ok I’ll stop now!).

Next was a wee session on the performance of Docker on vSphere. This actually turned out to be a stats fest, comparing the relative performance of Docker running on native tin and virtualised. The TLDR for the session was that running docker in a VM provides a minimal overhead to most things. Slightly more impact on network latency than other resources, but depending on the scale out nature of the solution it can actually perform better than native due to optimal NUMA scheduling.

Consider requirements over performance when looking at how to roll out your container platform. If you are running to performance margins of sub 5-10% on any resource then you have under-designed your infrastructure!

The final session of the day (INF5229) was actually probably my favourite of the whole week. If this is released on youtube I recommend you catch it above any other session! Ben Corrie (Lead Engineer on Project Bonneville) took us through a clear and detailed explanation of the differences between running Docker on Linux inside of a standard VM compared to running vSphere Integrated Containers and Photon.

After a quick overview of some of the basics, Ben then proceeded to do several live demos using a one day old build, inside of his Mac Mini test lab (with he appropriate nod given to Mr William Lam of course)! I’m convinced he must have slaughtered many small animals to the gods of the Demos, as the whole thing went off without a hitch! Perhaps Bill Gates could have done with his help back in 1998!

Most importantly, Ben showed that via the use of vSphere Integrated Containers, you are no longer limited to simply containerising Linux, and the same process can be applied to virtually any OS, with his example being MS-DOS running Doom in a container!!! When cloning Windows VMs, the same technology will be used as last year, which enables the ability to generate a new SID and do a domain join almost instantly.

It’s also worth noting that this is not based on the notoriously compromised TPS, and is all new code. Whether that makes it more secure of course, is anyone’s guess! 🙂

MS-DOS Container under Docker and VIC, running Doom!

MS-DOS Container under Docker and VIC, running Doom!

Once the sessions were all done for the day I wandered down to the Solutions Exchange for the annual “Hall Crawl”, where I was admiring Atlantis Computing CTO Ruben Spruijt’s Intel NUC homelab, running in a hyper converged configuration. The only negative I would suggest is that his case is the wrong way round!

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The day finished off with the VMworld party, and a great performance from Faithless on the main stage. As a Brit, this was a great choice, but I did see a few confused faces from many of our EU counterparts, at least until Insomnia started playing!

Day Three QotD

Robbie Jerrom produced Quote of the Day for me on the CNA panel (which was where my Quote of the Event came from, but more of that later). It is very simple but succinct in getting across a relatively complex subject:

A micro service does one thing, really well.

 

Free vSphere 6 Training! (Yes this title is blatant click bait!)

Yes I fully admit that this article is click bait, but i can promise you that attending the event below will help you learn all about VMware’s latest and greatest release (and a few other things besides), as well as having the opportunity to network with some awesome like-minded individuals!

The event agenda is below and follows the usual mix of vendor sponsors and top notch community sessions, followed by a couple of cheeky lemonades at the vBeers event at the Pavilion End at the end of the day.

As an added bonus it seems that the night before the meeting, the crew from TECHUnplugged will be in town and everyone is invited to a vWhatever session (vBeers, vWine, vCurry, vWhatever!), location TBC. Keep an eye on Jane Rimmer’s blog for more info!

London VMUG 23rd April 2015 Agenda

I am hoping to be at the event, having only missed one in about the last 3 years, so if you do spot me there (I’m the 6’7” Scottish bloke”)!

Public Speaking Tips for Tech Talks and #VMUG Sessions

Keep Calm and Speak at a VMUG

Public speaking can be daunting if you don’t do it regularly (and sometimes, even if you do!). As part of my role I regularly talk to small groups of 5-10 people, but this year I have had the opportunity to speak a couple of times at the London VMUG.

The following tips are a combination of my own experience, both where I think things in my sessions went well, and equally where I could definitely have improved. Many thanks to Mike Laverick, Simon Gallagher, Andrew Audsley and Mark Wilson for their presenting and technical tips as well!

Presentation Tips

  • Facts, figures, best practices and suggested configurations are interesting, but sharing of real life experiences is what people come to hear. Anecdotes are much more interesting.
  • Talking about what works and what went well is great, but issues or things that didn’t quite work out as you expected are just as valuable, if not more so.
  • Gauging the audiences level of knowledge / experience early on can be very helpful. The first thing I did in my last presentation was to ask how many people in the room worked with or designed storage on a regular basis. As it was a “Noddy’s Guide”, I was expecting few hands, but in fact ¾ of the room put their hand up! The advantage of asking this up front is that I was able to tweak my session to the audience by dropping or de-emphasizing a lot of the simpler stuff and concentrating on the more complex / interesting bits.
  • By talking about what you did / would do in a scenario, as opposed what you think other people should do, they are be more likely to be receptive. This subtle difference can change the feel of a session from being a lecture, into a discussion. If the intention of the session is to get people to interact, this might encourage people to step up and say what they would do in the same situation, or to talk about their experiences.
  • If you are not 100% sure of / expert in all of your content, consider including “islands” of content at regular intervals (e.g. every 10-15 minutes), where you know the content really well. This means if you happen to start to drift and lose your way a bit, you can anchor to the bits you know really well and build your confidence back up before moving on to the next bit of the presentation.
  • Don’t be off put if you don’t get a huge amount of interaction, especially with large groups. The bigger the audience, the less interaction you are likely to get, unless you specifically ask for it or start picking on audience members!
VMUG Audiences Are Friendly!

Dont worry… VMUG audiences are friendly!

  • Don’t be nervous about the audience! Much like a wedding speech, its worth remembering that the VMUG audience at a community session really want the speaker to succeed. It’s unlikely you will find a more friendly and willing audience in almost any other situation.
  • Lists are not exciting, and neither are multiple slides of “and another thing” type of comments. I definitely felt I should have tried to break up my last session into different types of content and context, which would have made it more interesting.
  • Even if you plan your presentation to the minute in advance, things never quite work out that way! You are likely to be asked questions, stopped mid flow, projectors turn themselves off and start smelling a bit smoky etc… the best thing to do is plan a shorter presentation as you will undoubtedly use all the time anyway!
  • When it comes to slides less is most definitely more!
  • You don’t actually have to go through every line on every slide, sometimes simply picking out the most pertinent bits can make for better flow, and the decks are usually available after anyway, so someone who is really interested can read the detail if they want to.
  • One other tip which Duncan Epping gave recently and I definitely agree with is to practice your presentation a few times through in advance, but don’t over-practice and end up being too robotic. Everyone has their own style but I personally like to use the slides as a talking point and guide, rather than planning word-for-word what I’m going to say.
  • Once you have your initial draft, try it out on some friends or colleagues in the industry. This can be invaluable for working out your timing and getting a feel for what works and what doesn’t. I ended up rewriting large chunks of my storage presentation after running through it with some guys from my team at work.
  • Don’t forget about the awesome FeedForward initiative! I was fortunate enough to have the inimitable Mike Laverick provide me with FeedForward prior to both of my London VMUG sessions, and in both cases he provided lots of valuable suggestions and improvements to my content and style as well as coming up with a few ideas I hadn’t even considered.

Tech Tips

  • As I have painfully discovered first hand, no matter how much prep and testing I did on my slide deck, it still went wrong! From now on I plan to have a backup plan; a PDF copy I can whip out if PowerPoint goes nuts again!
  • Don’t use PowerPoint animations… they’re unreliable at best!
Sacrifice to the Gods of Demos

Sacrifice to the Gods of Demos

  • If you are going to do a live demo, don’t forget to sacrifice an old laptop, phone, printer or other electronic device to the gods of Demos! [Alternatively, you could just record a copy of your demo in case it all goes wrong then you have a backup plan].
    A prime example of this (and I’m sure he won’t mind me sharing it) was our London VMUG’s very own Simon Gallagher who was doing a software demo. He tested it successfully just minutes before his presentation was due to start. During his presentation the demo then decided to fail! After a bit of investigation, Simon realised that the license key on his software ran out in the few minutes between his last test, and his live demo starting. Talk about unlucky timing?!
  • [Mac] Mirroring screen contents instead of using presenter view tends to work more consistently, rather than extending the desktop to the projector. In my day-to-day work this is what I have always done and its always worked very reliably. It does mean you can’t use speaker notes though of course.
  • [Mac] Consider running PowerPoint in Parallels or Fusion on Windows. The Windows version of PowerPoint is apparently more consistent!

If you have any more tips or suggestions you think would be worth adding to the list, please feel free to contact me and I’ll be happy to add them for the benefit of others!

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