The greatest challenge to any thinker is stating the problem in a way that will allow a solution

Bertrand Russell

Welcome to vBlog, a personal record of my techy tinkerings and particular ponderings.

I tend to focus on VMware virtualisation, and the interaction/automation of it using PowerCLI (VMware's PowerShell Snapin), but anything that I happen to stumble across that seems like it might be of use at a later date, may well get recorded here.

I also maintain vWiki, which was a predecessor to this blog. Wiki's are great for quickly recording snippets of info, but tend not to look that great; Blog's are better looking things, but seem to require more effort so that the posts/articles are accessible in their own right. As a result I tend to update both interchangeably as available time, and depth of thought, permit.

If you happen to find anything of use, or in need of correction please leave a comment. Knowing that my ramblings are of some use is a great reward; and similarly I'd hate to waste anybody's time by feeding them duff info.

See these pages for me info about me, and my vBlog, and below for my recent posts...

Came across an odd problem today, whereby nobody could use any of the deploy template options as they were all greyed out…

  • Clone…
  • Convert to Virtual Machine…
  • Deploy Virtual Machine from this Template…

We’re all admins with full rights over everything, so it wasn’t a permissioning issue (although I suspect it might be a permissioning bug).  The fix is to just re-add the Templates into the vCenter inventory (fuller details below if you don’t know how this is done). Continue reading →

In June 2011 VMware updated the secure key used for VMware Update Manager.  In order to prepare for this they made an update available well in advance, which would allow updates to continue.

However, if you need to reinstall an ESX from scratch, and your install method uses an older build, your rebuilt machine may be unable to update.  This is especially a problem for legacy ESXi environments, where you may be rebuilding using an old USB key image, which you’d need to go through the effort of recreating.  Chances are you’ll comes across this problem with the following error from the VI Client when you try to scan for updates or remediate…

VMware Update Manager had a failure

Continue reading →

A while back I came across an intermittent storage problem, whereby paths were occasionally going down and coming back up for a period of time.  In order to be able to tally the timings of the events up with other goings on (eg when looking at SAN logs etc) I needed to create a an export of when the events were occurring.

Note that Get-VIEvent is limited to 1000 results, which will typically get 1 – 2 days worth depending on your infrastructure. To get a longer history would require multiple calls to Get-VIEvent using the -Start and -Finish parameters Continue reading →

Known bug in Windows 2008 SP2 causes the default gateway of a machine to disappear on reboot. This is resolved by resetting the IP stack and re-entering the IP config

  1. Record IP details
    • ipconfig/all > C:ipconfig.txt
  2. Reset the IP stack
    • netsh int ip reset
  3. Restart server
  4. Re-enter IP config
  5. Reboot to confirm its held

There’s a bugfix available from