Invoke-VMScriptPlus

The Invoke-VMScript cmdlet is definitely one of the PowerCLI cmdlets that is indispensable when you need to do things inside the Guest OS of your VMs.

When you are interacting with a Windows based Guest OS you can run old-fashioned BAT files or use PowerShell scripts. When the Guest OS is Linux based, you currently only can run Bash scripts.

Most Linux flavours have a feature that is called SheBang, and which allows you to specify in the first line of your bash script, which interpreter shall be used to run the following lines of the script. Unfortunately, the current Invoke-VMScript cmdlet doesn’t allow one to use that feature.

Time to tackle that issue, and expand the possibilities for all VMs that have a Linux-based Guest OS. So I decided to write my Invoke-VMScriptPlus function.

Update October 14th 2017

  • Added here-document bash sample

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PowerCLI 6.0 R2 – Little black book

How many of you have seen Alan‘s, by now famous, book,  where he writes down all the user requests and comments he receives ?

book

Today Alan, and the PowerCLI Dev Team, have proven once again that this book is not there for the show. As I already mentioned some time ago in PowerCLI 5.5 R2, they do listen to you !, these guys keep improving an otherwise fantastic product at regular intervals. And note that 5.5R2 was only released a mere 18 months ago !
In today’s PowerCLI 6.0 Release 2 they added a bunch of highly interesting features. Just to name a few:

  • Further steps to a full Module distribution. The License component is now a module as well. And they fixed the issue with the $PSModulePath I mentioned in Fixing a (minor) PowerCLI 6 R1 issue
  • Further VROps integration, and I’m especially excited about the Get-OMStat cmdlet.
  • Update Manager integration. We have all been waiting for this one! No more separate product, fully integrated in PowerCLI, and it will work with Update Manager 5.5 and later.
  • More cmdlets build on the VASA API.
  • Support for SRM 6.1 and vCloud Director 8.0
  • …and a ton of fixes and improvements!

For a full overview consult the PowerCLI 6.0 R2 Release Notes.

Btw, Alan has demonstrated a number of these new features in our VMworld US session INF5211.

So what are you waiting for ? Start downloading !

And as a side note, the book is not full yet, keep sending your requests and suggestions to Alan ! It will only make the product better, because they do listen to you !

Enjoy !

Stats Toolbox – A vSphere Server Performance Counter tool

Finding out which performance counters are available on your vSphere server over which time interval, is not always an easy task. There is of course the Performance Manager entry in the VMware vSphere API Reference, but that is not always the easiest task. Let alone finding out what a specific counter actually represents.

For that reason I decided to create a tool, which I called the Stats Toolbox, that would query the vSphere server to get the actual list of counters it collects for each interval. In the tool I added some extra features that would make working with the performance counters easier.

Stats-ToolboxDuring our VMworld 2014 US breakout session I demonstrated the features of the Stats Toolbox, and I received quite some positive feedback.

Continue reading Stats Toolbox – A vSphere Server Performance Counter tool

Event-O-Matic

One of the questions, related to working with vSphere events and tasks, that often appear in the PowerCLI Community, is how do we know which events to select for a query.

To make that task a bit easier, I wrote the Event-O-Matic script. It’s a GUI that allows you to pick a number of events, and the script will generate the PowerShell code, and place it in the clipboard. The Event-O-Matic script was mentioned during our VMworld 2013 US session VSVC4944.

event-o-matic-3-2

Update September 7th 2013:

  • added at least PowerShell v3 test
  • added PowerCLI core pssnapin loaded test

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SiW – Robust Sessions and PowerCLI

One of the new features that came with PowerShell v3 was the introduction of “robust” or “persistent” sessions. This is, imho, a huge improvement on the concept of remote sessions who were introduced in PowerShell v2.
In short, before robust sessions, you had to keep the the client, that created the session, open to keep the remote session alive. With robust sessions, the client side can be closed, and you can reconnect to the robust session, even from another client.
This new remote session concept is something that can be used to solve a number of known PowerCLI “issues”.

                        siw-icon

Siw stands for Server in Waiting. We selected that term since we liked the sound of it, no double entendre should be suspected 🙂

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What’s in the View AD-LDS ?

For those that are working with VMware View it is probably common knowledge that View stores information about the virtual desktop infrastructure configuration in an AD-LDS (Active Directory Lightweight Directory Service) on the Connection Servers. An AD-LDS, previously known as ADAM, is an embedded LDAP directory.

Since the current PowerShell snapin that comes with VMware View is seriously lacking functionality, and doesn’t integrate too well with the PowerCLI snapin, there are several View administrators out there, that look at this AD-LDS to help them manage their View environment.

I will list a number of existing scripts that use the AD-LDS to retrieve View related information. But most of the time these scripts go for only part of the available information.

Continue reading What’s in the View AD-LDS ?

VMworld 2012 Sessions – Public Voting

It’s that time of the year again I’m afraid.

While this blog tried to bring you useful PowerCLI scripts and functions throughout the year, I now have to revert into begging mode. The VMworld Call for Papers Voting is open !

If you enjoyed one or more of the blog posts here, or if I answered one of your questions in the PowerCLI Community, or if you enjoyed one of our sessions during a previous VMworld, please cast your vote on the sessions I submitted for VMworld 2012.

Session 1328 is offering the best of all worlds. It will answer all the questions you might have about Automation and vSphere. The panel includes superstars William Lam and Alan Renouf, and the master of ceremonies is none other than Pablo Roesch. You can’t go wrong with this session !

Session 1329, which I submitted together with my long-time co-presenter and co-author Alan Renouf, will be the sequel to our successful Best Practices session from last year. There will be a ton of new best practices ! When you use PowerCLI, or intend to use it, this is the session you shouldn’t miss.

Thanks for your vote 🙂

Continue reading VMworld 2012 Sessions – Public Voting

PowerCLI at VMworld US

Last year’s sessions by Alan and myself definitely was one of the highlights of my year. And judging by the comments and scores we received, it didn’t go down that badly with the attendees either. So this year we want to “raise the bar”. We have some fantastic sessions planned and hope you will come and see some of the things we have organised.

If I had to use one word to describe our sessions this year it would be “Super”. After you have seen the sessions you will understand why.

So to give you an idea of what we have planned we decided to give you a quick outline of our sessions and also a mention some of the other PowerShell and PowerCLI based sessions at VMworld….

And don’t forget to register in time !

Continue reading PowerCLI at VMworld US

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