Posts about uncategorized

Windows 8.1 Upgrade

I had a few issues while attempting to upgrade my laptop from Windows 8 to Windows 8.1.

  1. If your harddrive is encrypted with something like TrueCrypt, you'll have to decode it, apply the upgrade and then re-encode it.
  2. A batch file script I use to sync podcasts between my PC and mp3 player had once gone a little nuts and written some files to my system reserved partition. This meant that there wasn't enough free space in there for the 8.1 upgrade to do its thing. I had to use a GParted Live CD to work out what was wrong and clean up the podcast mess.

Once the install of the 8.1 upgrade was completed the first thing I attempted to do was connect to one of the servers I manage via remote desktop. I usually do this by selecting the appropriate entry from my start -> run history. Imagine my joy to find out that all the entries for all commands had been removed. Thanks MS.

Hyper-V 2012 Failover Cluster: Live Migration Fails

I love hyper-v. I especially love hyper-v running on windows server 2012 in a failover cluster configuration. It truly is a wonderful environment to administer windows servers. With this said, the error logging leaves a lot to be desired.

I've just spent the better part of two days trying to work out why live migration of servers between cluster nodes wasn't working. The error message which Microsoft helpfully give you when this happens is simply:

Event ID: 21502
Source: Hyper-V High Availability
’Virtual Machine <VM NAME>’ Live Migration did not succeed at the destination

And over on the hyper-v host you were trying to migrate the virtual machine onto you'll get the equally as amazing Microsoft-Windows-Hyper-V-High-Availability-Admin log entry of:

Source: Microsoft-Windows-Hyper-V-High-Availability
Event ID: 21111
Description:
Live migration of 'Virtual Machine <VM NAME>' failed.

Oh thanks, it didn't work because it failed.

Finally after reading many a technet article and support thread I stumbled onto the fix. It was simple. Here's the details for anyone else who suffers this problem:

  • On any node in your hyper-v cluster, open up Failover Cluster Manager

  • Select the cluster name

  • In the bottom right corner of the manager window, click Take Offline

  • Again in the bottom right corner, under More Actions, click Repair

  • This will bring the cluster back online and magically fix the mysterious problem causing live migrations of VMs to fail

Best of all, it will do this with out any disruptions to running VMs. Enjoy!

Systems Center Operations Manager 2012

My 1st project in my new job is shaping up to be the installation and configuration of Microsoft's System Center Operations Manager 2012. While this system will allow a range of monitoring features which will be very helpful in our environment, the main use case which is driving the project is auditing.

The company I'm employed with needs to get an accurate picture of exactly what systems they have out in the wild, what operating systems they're running, what patch levels are they at and what are the specs of the hardware. We also need these details to be easily checked again in the future, so that manually doing an audit "just this once" isn't a good plan.

So in steps SCOM 2012. Here's the promo copy which MS use to explain what operations manager does:

Businesses, small and large, are typically dependent on the services and applications provided by their computing environment. IT departments are responsible for ensuring the performance and availability of those critical services and applications. That means that IT departments need to know when there is a problem, identify where the problem is, and figure out what is causing the problem, ideally before the users of the applications encounter the problems. The more computers and devices in the business, the more challenging this task becomes.
Using Operations Manager in the environment makes it easier to monitor multiple computers, devices, services, and applications. The Operations console, shown in the following image, enables you to check the health, performance, and availability for all monitored objects in the environment and helps you identify and resolve problems.

I'm currently reading through the SCOM 2012 survival guide.

Falling From The Sky

I've planned my 1st skydiving in 5 years planned for tomorrow morning, which will be at one of the biggest drop zones in America; Eloy, AZ. To say I'm pretty excited is somewhat of a massive understatement. Hopefully my plan for overly tight leg straps will prove successful in avoiding the incredible amount of pain I was left in last (when on opening my leg strap had slipped below my bone tumor and "grated" across it, causing huge bruising). Because, hot damn I miss falling.