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by Duncan Epping

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Various

Serve, Learn and Inspire – support the cause and donate/contribute!

Duncan Epping · Feb 20, 2014 ·

Today I am flying out to Vietnam. No not for a holiday, as many seem to think. I am flying out to Vietnam to work with several great VMware colleagues whom have been asked by the VMware Foundation to go on this journey. I am very grateful and honored to have been selected for this project, it is not just a random project… We will be helping Team4tech and Orphanimpact by working on improving the delivery of computer classes to various orphanages in Vietnam.

Some of you will probably have the same question as my daughter had when I explained why I was going away for almost 2 weeks to Vietnam: “You are going to an orphanage to do what… improve delivery of computer classes, why would those kids need that?” Watch this video and you will understand why it is important for these kids to get computer classes, preventing social isolation is key here.

More details about Orphan Impact here: orphanimpact.org
More details about Team4Tech here: team4tech.org

If your company is interested in contributing / giving back, make sure to contact Team4Tech and Orphan Impact. They work with many great technology companies like Intel and VMware on various projects, and they can use all the help they need.

I know many of my fellow technology lovers have a big heart. I would like to ask each and everyone of you who has enjoyed reading my articles to donate something to either Team4Tech or Orphan Impact. (Of course contributions in different ways like I describe above are also encouraged!) Believe me, this is a great cause and they can use all the help they can get. You (or the company your work for) can donate any amount, but with only 10 dollars you can give these kids a headphone for their computer classes for instance. (Before anyone asks, yes I just donated.) VMware folks, if you donate don’t forget to request a donation match through the VMware Foundation!

Support the cause!

Access Denied on wp-admin / wp-login page

Duncan Epping · Jan 10, 2014 ·

I have had this problem various times in the last 6 months on my WordPress blog. For whatever reason all of a sudden when I access my wp-admin page I receive an access denied on wp-admin / wp-login.php. Really annoying as you can imagine as it means you cannot get in to the back-end of your blog making it impossible to manage it. The blog it self is still available though when this happens so I figured I would write down the fix, as I somehow keep forgetting it.

  • FTP in to host
  • Check file permissions on wp-login.php, in my case permissions on this file are somehow magically always “00”
  • Change permissions back to 0644
  • Fixed, you should be able to login again

Simple solution, for a strange problem. If I ever find the rootcause I will post it here as well.

Confessions of a VMUG speaker

Duncan Epping · Dec 24, 2013 ·

I started reading this book by Scott Berkun titled “Confessions of a public speaker”. After the first couple of chapters I felt I wasn’t alone… What I am talking about? Stage Fright / Fear of Public Speaking. Let me start with a quote first…

Mark Twain, who made most of his income from speaking, not writing, said, “There are two types of speakers: those that are nervous and those that are liars.”

For those considering speaking at a VMUG but are terrified, I hope you find comfort in knowing that the majority of people you see presenting at these events have (or had) similar feelings. I don’t know anyone who is not nervous when he goes up on stage. Those who say they are not probably indeed lie about it, yes there are some exceptions to the rule of course as always, but I can tell you that I am not one of those. I used to be terrified, stage fright is the right word.

Just to speak from my own experience, a lot of people seem to think that presenting is part of my role and is something I enjoy doing. I do enjoy it when the session is over, but the journey there I don’t enjoy. I am still nervous when I go up on stage, and depending on the size that is either nervous/excited or nervous/scared. Yes, like many of you reading this, the first couple of times presenting I wondered WHY am I doing this? It was painful being up on stage, it was painful doing dry-runs, and it even felt crap afterwards. WHY am I doing this?

Personally I believe I need to place myself in an uncomfortable situation to grow / learn. This applies to learning new skills, like public speaking, but also broadening the horizon from a job/career perspective. You can be a “virtualization admin” for the rest of your life and do it with your eyes closed… You can also take on a completely new set of responsibilities, yes you will feel uncomfortable for a couple of weeks or even months, but guess what after a while it all feels like you have been doing it for years… Same applies to public speaking, only way to get comfortable with that fear or nervous feeling is by doing it!

So what are some of the mistakes I made, and probably still make every once in a while, and what should you be doing or not doing?

  • Don’t over do it! Practicing will help your delivery, overdoing it will probably hurt it! I did this for a long time, and I noticed I get nervous about forgetting things, and guess what… You will forget things, but don’t worry about that because the audience typically doesn’t know what you are going to tell them anyway!
  • When practicing focus on your opinion, your story, your considerations. Don’t practice it “word by word”, think big and feel comfortable with the content.
  • Don’t cram your slide-deck! Less = more. Especially true in the case of a slide-deck, understand the deck is there to support your presentation. But still keep in mind that many people use the slide-deck afterwards as study notes, so keep it balanced. Typically when you have 60 minutes, aim for 50 minutes talking and 10 minutes QA. Believe me when I say that 30/40 slides is MORE than enough. 30 would probably be better, and if you can do with less you’ve mastered it!

Practice while you build your deck… I do this regularly to test the flow and see if the points / diagram / screenshot works in the presentation, and I will tweak the deck while doing a dry-run when something doesn’t work.

And it’s often the case that the things speakers obsess about are the opposite of what the audience cares about. They want to be entertained. They want to learn. And most of all, they want you to do well.

That is key to remember, they want you to do well! Now, please take the time in the upcoming days to think about what you would like to talk about at a local VMUG. Everyone has something interesting to tell, it doesn’t need to be a deepdive on Storage, not everyone is Cormac Hogan right… No, a presentation on your migration between storage systems or datacenters could be just as interesting! A presentation on the introduction of a Disaster Recovery tool and how it changed your life would be a good way to help people making the right decision. Many many things one can talk about without the need to go extremely deep.

Once again, think about what you would like to talk about, create a slidedeck, practice and more importantly go have fun and support your local VMUG!!

vSphere 5.5 nuggets: High Availability Enhancement

Duncan Epping · Sep 4, 2013 ·

There aren’t a lot of changes in 5.5 when it comes to vSphere High Availability aka HA, but one is worth noting. As most of you are probably aware of, vSphere HA in the past did nothing with VM to VM Affinity or Anti Affinity rules. Typically for people using “affinity” rules this was not an issue, but those using “anti-affinity” rules did see this as an issue. They created these rules to ensure specific virtual machines would never be running on the same host, but vSphere HA would simply ignore the rule when a failure had occurred and just place the VMs “randomly”. With vSphere 5.5 this has changed! vSphere HA is now “anti affinity” aware. In order to ensure anti-affinity rules are respected you will need to set an advanced setting:

das.respectVmVmAntiAffinityRules - Values: "false" (default) and "true"

Now note that this also means that when you configure anti-affinity rules and have this advanced setting  configured to “true” and somehow there aren’t sufficient hosts available to respect these rules… then rules will be respected and it could result in HA not restarting a VM. Make sure to understand this potential impact when configuring this setting and configuring these rules.

2013 VMware Fling Contest – Join in on the fun!

Duncan Epping · Aug 26, 2013 ·

Last year VMware organized the very first VMware Open Innovation Contest and it was a very successful contest which resulted in an awesome fling called “pro-active DRS“. The Open Innovation Contest is back again in 2013 but now called the 2013 VMware Fling Contest.

Now lets get those creative juices flowing again, think about the challenges / problems you are facing everyday and how these could potentially solved and head over to the 2013 VMware Fling Contest website and submit: https://flingcontest.vmware.com/. Do note there is no need to rush to get your idea in, take your time – think about – but make sure to submit it before Nov 15th.

Of course there is an awesome price again, the winner gets a free pass to VMworld 2014, on top of that the VMware engineering team will execute on your idea and a fling will be released. How cool is that? If you need more info, stop by at the VMworld Innovation Booth at the solutions exchange.

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About the Author

Duncan Epping is a Chief Technologist and Distinguished Engineering Architect at Broadcom. Besides writing on Yellow-Bricks, Duncan is the co-author of the vSAN Deep Dive and the vSphere Clustering Deep Dive book series. Duncan is also the host of the Unexplored Territory Podcast.

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