Tag Archives: powershell

Change all ESX root passwords

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Another great script from Arnim van Lieshout.

With this script you can change all ESX root passwords at once:

#
# This script changes the root password on all ESX hosts in the esxservers.txt textfile
# 

# Add VI-toolkit #
Add-PSsnapin VMware.VimAutomation.Core
Initialize-VIToolkitEnvironment.ps1# Get old root credential
$oldrootPassword = Read-Host “Enter old root password” -AsSecureString
$oldrootCredential = new-object -typename System.Management.Automation.PSCredential -argumentlist “root”,$oldrootPassword

# Get new root credential
$newrootPassword = Read-Host “Enter new root password” -AsSecureString
$newrootCredential = new-object -typename System.Management.Automation.PSCredential -argumentlist “root”,$newrootPassword
$newrootPassword2 = Read-Host “Retype new root password” -AsSecureString
$newrootCredential2 = new-object -typename System.Management.Automation.PSCredential -argumentlist “root”,$newrootPassword2

# Compare passwords
If ($newrootCredential.GetNetworkCredential().Password -ceq $newrootCredential2.GetNetworkCredential().Password) {

 # Create new root account object
 $rootaccount = New-Object VMware.Vim.HostPosixAccountSpec
 $rootaccount.id = “root”
 $rootaccount.password = $newrootCredential.GetNetworkCredential().Password
 $rootaccount.shellAccess = “/bin/bash”

 # Get list of Host servers from textfile to change root password on
 Get-Content esxservers.txt | %{
  Connect-VIServer $_ -User root -Password $oldrootCredential.GetNetworkCredential().Password -ErrorAction SilentlyContinue -ErrorVariable ConnectError | Out-Null
  If ($ConnectError -ne $Null) {
   Write-Host “ERROR: Failed to connect to ESX server:” $_
  }
  Else {
   $si = Get-View ServiceInstance
   $acctMgr = Get-View -Id $si.content.accountManager
   $acctMgr.UpdateUser($rootaccount)
   Write-Host “Root password successfully changed on” $_
      Disconnect-VIServer -Confirm:$False | Out-Null
  }
 }
}
Else {
Write-Host “ERROR: New root passwords do not match. Exiting…”
}

Example esxservers.txt:

esx001.yourdomain.local
esx002.yourdomain.local
esx003.yourdomain.local
esx004.yourdomain.local

Download: [wpdm_file id=9]

List all vm’s and total assigned diskspace

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Looking for new scripts i’ve stumbled opon the following script to list all vm’s to an excel sheet and display the total assigned diskspace:

# Define Variables 
$outputFile = 'C:\VMDiskCapacity.csv' 
$VCServer = "vcenter.mydomain.com" 
$username = "vcenter_admin" 
$pass = "password" 

################## 
# Add VI-toolkit # 
################## 
Add-PSsnapin VMware.VimAutomation.Core 
Initialize-VIToolkitEnvironment.ps1 

# Connect server 
$VC = Connect-VIServer -Server "$VCServer" -User "$username" -Password "$pass" 

$myCol = @()    # Prepare output collection 
$VMs = Get-VM | sort Name    # Get all VMs (sorted) 
$counter = 0    # Initialize counter for progress bar 
ForEach ($VM in $VMs)    # Loop through VMs 
   { 
   $counter++    # Increase counter for progress bar 
   Write-Progress -Activity "Gathering disk information" -Status "Processing VM $VM" -PercentComplete (100*($counter/$VMs.count))    # Display progress bar 
    
   $myObj = "" | 
   select VM, TotalDiskSizeGB # Create output object 
   $myObj.VM = $VM.Name    # Virtual Machine Name 
    
   $TotalDiskSizeKB = 0 
   ForEach ($DISK in $VM.HardDisks)    # Loop through VM's harddisks 
      { 
      $TotalDiskSizeKB += $DISK.CapacityKB    
      } 
    
   $myObj.TotalDiskSizeGB = [math]::Round(($TotalDiskSizeKB * 1KB / 1GB),0) #Disk Size in GB 
   $myCol += $myObj    # Add output to collection 
   } 
$myCol | Export-Csv $outputFile -NoTypeInformation  # Export output to csv

VMware ESX Datastore Reports – PowerShell

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Using Microsft PowerShell and the VI Toolkit for Windos you can do some nice stuff. When looking for a way to make reports for a customer of my i’ve stumbled upon a few scripts.

All you have to do is to install Microsoft Powershell, VI toolkit for windows and have Office on your machine. When running the powershell script [wpdm_file id=”4″] i get the following output:

Datastore Chart

Contents of datastore.ps1:

if ((Test-Path  REGISTRY::HKEY_CLASSES_ROOT\OWC11.ChartSpace.11) -eq $False)
{
       Write-Host "This script requires Office Web Components to run correctly, please install these from the following website: http://www.microsoft.com/downloads/details.aspx?FamilyId=7287252C-402E-4F72-97A5-E0FD290D4B76&displaylang=en"
       exit
}
connect-VIServer yourserver

$Caption = "Datastore Usage %"

$categories = @()
$values = @()
$chart = new-object -com OWC11.ChartSpace.11
$chart.Clear()
$c = $chart.charts.Add(0)
$c.Type = 4
$c.HasTitle = "True"
$series = ([array] $chart.charts)[0].SeriesCollection.Add(0)

Get-datastore |Sort-Object FreeSpaceMB -Descending | foreach-object {

        $capacitymb = $_.CapacityMB
        $FreeSpaceMB = $_.FreeSpaceMB
        $UsedSpace = $capacitymb - $freespacemb

        $perc = $UsedSpace / $capacitymb * 100

        $categories += $_.Name
        $values += $perc * 1
}

$series.Caption = $Caption
$series.SetData(1, -1, $categories)
$series.SetData(2, -1, $values)
$filename = (resolve-path .).Path + "\Chart.jpg"
$chart.ExportPicture($filename, "jpg", 800, 500)
invoke-item $filename