Tag Archives: Script

How To Find Non-tagged ESXi Hosts

There are plenty of scripts to find tagged ESXi hosts. But what if you want to find out all ESXi hosts not be tagged? Following is a simple script:

Compare-Object ((Get-VMHost | Get-TagAssignment).Entity | select -uniq) (Get-VMHost)

The output is similar like following:

InputObject      SideIndicator
-----------      -------------
esx1         =>  
esx2         =>  
esx3         =>

The => indicates ESXi hosts in InputObject are not tagged.

If return is nothing, it means all ESXi hosts are tagged.

Please refer to “Using the Compare-Object Cmdlet” for detail.

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Automatic vSphere Capacity Report in PPT

Reporting is important to management. To be a IT Pro, you may need to run regular reports for management. Some reports may be generated time consume. vRealize Operations Manager is an alternative to create customized reports. It’s a powerful product to organize data and create PDF or CSV files on scheduled intervals. I recommend have a look if you have planned to implement performance, capacity and alarm system for virtual environment.

What if budget is constrained? Is there a way to create such kind of reports? The answer is “Yes”. I worked out an automatic workflow to create the reports. I will not provide step-by-step guide in this post since it’s advanced integration of multiple products, everyone may have different way to do that. You can even create everything by script if you have strong programming skill. I’m not, I only look for the easiest way to achieve the goal.

Here is a scenario for  example: I want to run a monthly report for vSphere CPU and memory count and present to management by PowerPoint. I want to show management the historical trend of CPU and memory data. The traditional way is collect data in vCenter, organize and create charts in PowerPoint slides. So the whole workflow is: vCenter -> PowerPoint

If you want to automate the whole process you need to introduce few things more: PowerCLI, CSV and Excel. You need to develop a PowerCLI script to grab CPU and memory data on vCenter Server, then export the data to a CSV table by PowerShell command export-csv. Then import the table to an Excel file by Office feature Query Data. It loads the CSV table dynamically, you can even specific what data can be queried by filter.

Once the table is present in Excel, you need to create a chart accordingly. It’s trick when you paste the chart to PowerPoint Slide. You need to use Paste Special to paste the chart as Microsoft Excel Chart Object. The pasted chart can be updated automatically when you open the PowerPoint file.

The last step is created a scheduled task to run the PowerCLI script. Make sure you read my blog Extremely slow when run PowerShell script by scheduled tasks before create the task.

You can also configure the Excel file to automatically update table by CSV file.

How to Integrate PowerCLI 6.5 with PowerShell and PowerShell ISE

I wrote an article to introducing how to integrate PowerCLI with PowerShell and PowerShell ISE. VMware just released PowerCLI 6.5 R1, it includes lot  of new features and modules. And somehow my way doesn’t work. Following is new way to integrate PowerCLI 6.5 with PowerShell and PowerShell ISE in Windows 10.

PowerShell and PowerShell ISE both have it own $profile. So we need to do two times.

Before we start

Please make sure your PowerShell execution policy is not restricted. You can get the setting by run  following command:

Get-ExecutionPolicy

PowerShell Integration

  1. Open PowerShell window. Run following command to confirm profile file is not existing.
    Test-Path $profile

    If return is ‘False’, go to step 2.
    If return is ‘True’, Backup the file and go to step 3.

  2. Run following command if the  profile file  doesn’t existing.
    New-Item -Path $profile -type file -force | Out-Null
    
    Test-Path $profile

    The return above should be ‘True’. Profile file is created.

  3. Run following command to include VMware PowerCLI modules in  PowerShell.
    Add-Content -Path $profile -value "# Load Windows PowerShell cmdlets for managing vSphere `r`n. 'C:\Program Files (x86)\VMware\Infrastructure\PowerCLI\Scripts\Initialize-PowerCLIEnvironment.ps1'"

    The blue text above maybe different in your environment base upon where your PowerCLI is installed.

PowerShell ISE Integration

PowerShell ISE process is same to PowerShell, only different is all the operation should be completed in PowerShell ISE window.

Reboot is not required in my environment. But anyhow please reboot if you see any issue.

The processes above integrate PowerCLI 6.5 with PowerCLI and PowerCLI ISE for  current user only. If you want to integrate for all users on the machine, you need to refer to this article.

How to integrate PowerCLI with PowerShell and PowerShell ISE

I wrote a post about how to integrate PowerCLI with PowerShell manually. I rebuilt my computer few days ago, need to integrate PowerCLI again. I used to scripting by PowerGUI, but something always lead to PowerGUI lost menu, it frustrated me a long time. I cannot figured out what’s the root cause. So I wondered is it possible use PowerShell ISE instead of PowerGUI?

Continue reading

Extremely slow when run PowerShell script by scheduled taks

I like automition/programming as much as I like Windows, my first offical training in University was VB, then I learned PHP and HTML after graduated. I can’t believe my first PHP program was welcomed in internel. But I stopped develop the skill.

I got lot of special request for virtual environment. Some people want to monitor snapshot, some want to check space status, and some request to create backup for VM…etc. Regular operation cannot satisify the requests, most of the requests are time consuming operation. Automation can save my ass. :-)

You may know PowerCLI – VMware automation product for PowerShell. If you put PowerCLI scripts as scheduled task, you will be able to do any workflow you want by schedule.

But there is a problem stuggled me for a long time. The scheduled PowerCLI script is instable, sometimes script ran very well, sometimes script ran extremely slow, sometimes script hung, or sometimes script unexpected stopped. In troubelshooting I noticed it need a long waiting time (maybe  5 – 10 mintues) till execute first line of script when I ran it on Scheduled Task Window. Initially I thought it’s a bug of PowerShell 2.0. I upgraded to 3.0 but no lucky. I also suspected loading PowerCLI Snap-in may slow down the script exectue time, or bugs on PowerCLI components, tried to google but nothing was found.

Finally my colleague Amnon gave my some idea, he asked me change the scheduled taks priority. I figured out the trick after did some testing:

  1. Create a task as usual.
  2. Export the taks to a xml file.
  3. Open the xml file by editor.
  4. Search keyword priority.
  5. Change the default value 7 to 3. ( More detail about priority of Scheduled Task )
  6. Save the xml file and delete created task.
  7. Import the xml as a task.

It signaficantly improved the executive time! Same script was 2 hours, now only 10 minutes!

Here is my another post ($array.count does not show anything in PowerCLI) regarding a bug of PowerShell, it may helpful for your PowerCLI script.

$array.count does not show anything in PowerCLI

I developed a script to take snapshot on VM and delete older snapshot regularly. I  used  variable $snapshots to receive data from Get-Snapshot command, then determine how many existing snapshots according to return of $snapshots.count. Somehow the script always ran incorrect behavior. When I deep looked into $snapshots, I found a interesting things.

Computer A, $snapshots.count return nothing if no, or one snapshot received.

Computer B, $snapshots.count returned 0 if no, or returned 1 if one snapshots received.

Then I checked out $PSVersionTable, found computer A powershell version is 2.0, B is 3.0, looks like this is a bug in 2.0.

The issue got fixed after upgrade to 3.0, one more benefit is I got performance improve to load PowerCLI components after upgrading.

You could install Widnows Management Framework 3.0 to upgrade PowerShell. I tested it on PowerCLI 5.5 Update1.

How to get HBA WWPN of ESXi hosts

It’s busy month, I haven’t update my blog since I back from Phuket with my wife. I’m running into multiple projects, a little overload.

Just a quick share, my storage team ask me provide WWPN of all hosts to do a health check. it’s nightmare to pull out the data from vSphere client or web client. Just found a way to get it.

Get-VMHost -Location | Get-VMHostHBA -type fibrechannel | select VMHost,Device,@{N=”WWPN”;E={“{0:X}” -f $_.PortWorldWideName}}

Especially “{0:X}” -f $_.PortWorldWideName}

{0:X} is format, check out here  to find more.

-f is kind of pipeline.

$_.PortWorldWideName is the value you want to convert.

 

How to Add VMware PowerCLI to Standard PowerShell Enviroenment

1. create a file with name “Profile.ps1” under %windir%system32WindowsPowerShellv1.0profile.ps1

2. Add following content to the file.

# Adds the base cmdlets
Add-PSSnapin VMware.VimAutomation.Core
# Add the following if you want to do things with Update Manager
#Add-PSSnapin VMware.VumAutomation
# This script adds some helper functions and sets the appearance. You can pick and choose parts of this file for a fully custom appearance.
. “C:Program FilesVMwareInfrastructurevSphere PowerCLIScriptsInitialize-PowerCLIEnvironment.ps1”

You need administrator permission to create file on the system32 location.