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Posted by on Dec 22, 2014 in Storage | 0 comments

Hard Drive Health Status of Permanent Disk Failure in VSAN

hdd

With all that spinning metal, it is only a matter of time when you experience a hard drive failure.  Fortunately for you, you’re using VSAN and hard drive failures are easy peasy.  Here we go!

Browse to the vCenter Web Client, Select your cluster > Manage > Disk Management

hdd2

Next, you’re going to want to remove that puked drive from the disk group.  It should be easy to spot the failed drive…

*spoiler alert*

Look for the icon with the red !

Select the disk group of the failed drive and Select the Remove Disk.

 

hdd3

Adding a drive is just as easy as removing the drive depending on the scenario you got yourself in when your configured the I/O controller.  The two paths are:

1.  If the I/O controller is in pass-through mode then its just plug and rug.
2. If the I/O controller doesn’t support pass-through mode then you will need to re-create each drive replaced as its own RAID 0 group.

Since I’m lazy I selected an I/O card that did pass-through mode.  I’ve replaced the drive and will now need to add it back to the disk group.

Select the original disk group from your cluster > Manage > Disk Management and select the Add Drive icon and new drive.

hdd4

 

BAM! Within a few minutes, I’m fully recovered and healthy again.  Come on VSAN – I beg you, make things just a little tougher next time!  This is just too easy.

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Posted by on Dec 21, 2014 in Storage | 0 comments

SSD is Opertional Dead or Error in VSAN

blow

 

Oh shucks, if you are just noticing your available VSAN capacity decreased by an entire disk group then you probably lost a SSD drive in your VSAN cluster.  By design, if a SSD drive dies then the entire disk group goes for a coffee break.  Let’s start off by verifying how clairvoyant I am, time for a heat check.

Browse to the vCenter Web Client, Select your cluster > Manage > Disk Management 

If you see “Dead or Error” under Operational then your SSD is hurting.

vsan1

I know this part might be painful for most but now you’re on the first step of recovery.  Just know, if you have at least 2 other VSAN hosts then you’re safe.  I’m assuming all your VMs have at least a failure policy of 1 host. Unless you’re the type that enjoys freebasing then none of your were VMs were  hanging around with a failure policy of 0.

From here, remove the disk group by Select the Remove Disk group icon under Disk Groups.

vsan2

 

Now that you’ve removed the disk group, you can replace the SSD and recreate the disk group like nothing ever happened.  If you don’t have any SSD drives to replace it with then you may want to take the time to see if the SSD is recoverable.  If the drive is still readable by the host then you might be in luck.  The SSD drive just may have went suicidal on you and just blasted away its own partition table.

I only wish I could yank the SSD drive out and bring it back to life by blowing on it like a Nintendo cartridge.  Bro, I don’t care what you say – Excitebike was the best.

excitebike-wii-world-rally

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Posted by on Dec 15, 2014 in Uncategorized | 0 comments

How Socialcast Could Change the World

Socialcast screenshot

Alright, maybe a little dramatic, but when I wrote my Docker is better on VMware article earlier this week it got me thinking about other technologies we’ve seen that improved when paired with another technology.  For example – Docker/VMware, Docker/Cloud Foundry, ViPR/vCAC, vCAC/Puppet, chocolate/peanut butter, etc.  There are literally hundreds of them.

But what about a social media application to use as a go-to for managing a virtual infrastructure?  One area we don’t see too much of is social media as a bone fide business application.  Not to say employees don’t tweet, or post how much they hate their boss on Facebook during 9:00-5:00, but for the most part outside of Sharepoint or an intranet site, companies really haven’t embraced a social media solution that IT could put it’s seal of approval on, let alone relied on it to manage a mission critical environment.

That is until now.  VMware purchased Socialcast back in May 2011 for an undisclosed amount.  Socialcast is a wonderful product!  We’ve used it internally at VMware for about the last three years and it really has solved some legitimate business issues.  It cut down on the amount of attachments that take up space in Outlook.  It became the primary source of information distribution throughout the company.  It cut down on the amount of emails we send and receive and it’s much easier to search for information on.  I could go on and on about how cool it is, but the really cool stuff is yet to come.

Let’s face it, corporate social media applications probably aren’t as sexy as automation and orchestration.  But it does have an API that may change all of that.  The API is powerful.  It can talk to other products like vCenter, vCloud Automation Center and vCenter Operations Manager.  You can learn more about what the API can do by visiting here: http://developers.socialcast.com.

So imagine posting a message about when and where you’re going to lunch, then post something like this (click image to enlarge) –

This would result in a job being created in vCenter or vCAC to provision a VM based off a template called ‘W2k8R2’ and install JRE, Tomcat server and SQL server to the image automatically through Application Director or Puppet, SCCM, etc.  Upon completion of the image being built, it would automatically ‘friend’ you as it’s creator, let you know when it’s been rebooted, powered off, etc. Would make itself part of a group of VMs that you own as well as other individuals on your team, provide an emoticon based on it’s vCOPs health and when you’re finished with it, tell it #decommission and it goes into VM heaven.

“How real is this”?  Is probably what you’re asking.  There’s a handful of folks within VMware that wants to make Socialcast into a one-stop-shop for all things social media and some things management.  There was a prototype presented at VMworld 2012 that got quite a few folks talking.  Here’s a blog post I found about it –http://blog.sciencelogic.com/a-new-approach-to-virtualization-management-at-vmworld-2012/08/2012 if you’re interested.

The VMworld 2012 keynote was the first time I saw the demo and it was impressive.  The demo showed simple interactions between Socialcast and vCenter.  The administrator created a VM in vCenter and upon creation it ‘friended’ him through Socialcast.  Pretty cool!

Turns out a customer I would later support this year also saw the demo and asked me to find out whatever happened to it.  It’s been somewhat of a skunkworks project the last few years, but thanks to customer interest has seen some new life lately.

Here’s the two primary use cases we’re working on:

  • Give teams access to the VMs they own via a simple management interface where they can do basic provisioning and operational tasks.
  • Cut down on the amount of alert ‘noise’ the owner a VM encounters using traditional tools.

Keep in mind Socialcast is a real and rather mature product today.  The ‘Friend-A-VM’ functionality is being developed and at this time is something VMware is only considering bringing to market.  What do you think?  Leave a reply with your opinion as to if this type of functionality would be valuable or not.  Have an idea on how it could be better?  Please share!  This is your chance to influence the feature set of a product.

 

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