Parse Excel variables into powershell - excel

Question

I am trying to create a powershell that will grab the varibles from an excel sheet and then add them to the powersehll command.
in the excel sheet i have 3 columns i am interested in the data from (Name , resourcegroup, location)
And then for each line with this i want it to parse into into the varible field for the powershell
I have created the powershell to do what i need but it would be better if it could loop through and pull this as I am just running the command again with different machine info manually added from the excel.
With #Theo Help
I am working with this version of the script now
Import-Csv -Path 'c:\scripts\vmtest.csv' | ForEach-Object {
# combine the VMName with suffix '-Snapshot'
$snapshotName = $vm.name + "-Snapshot"
$SnapshotStorage = "Azure-Snapshots"
$vm = Get-AzVM -ResourceGroupName $_.ResourceGroup -Name $_.Name
# using splatting for better readability
$configParams = #{
SourceUri = $vm.StorageProfile.OsDisk.ManagedDisk.Id
Location = $_.location
CreateOption = 'copy'
}
$snapshot = New-AzSnapshotConfig #configParams
New-AzSnapshot -Snapshot $snapshot -SnapshotName $snapshotname -ResourceGroupName $snapshotstorage
}

Answer 1

If as you have commented, you now have the data stored in a CSV file that might look something like this:
Name,ResourceGroup,Location
PRD-ITM001,SJAVIRTUALMACHINES,uksouth
TST-GRSSQL001,SJAVIRTUALMACHINES,uksouth
it has become very simple to import that data and loop through the records like below:
Import-Csv -Path 'c:\scripts\vmtest.csv' | ForEach-Object {
# combine the VMName with suffix '-Snapshot'
$snapshotName = '{0}-Snapshot' -f $_.Name
$SnapshotStorage = "Azure-Snapshots"
$vm = Get-AzVM -ResourceGroupName $_.ResourceGroup -Name $_.Name
# using splatting for better readability
$configParams = #{
SourceUri = $vm.StorageProfile.OsDisk.ManagedDisk.Id
Location = $_.Location
CreateOption = 'copy'
}
$snapshot = New-AzSnapshotConfig #configParams
New-AzSnapshot -Snapshot $snapshot -SnapshotName $snapshotName -ResourceGroupName $_.ResourceGroup
}
Note that the above code assumes your CSV uses the (default) comma as delimiter character. If in your case this is some other character, append parameter -Delimiter followed by the character the csv uses.
Inside a ForEach-Object {..} loop, the $_ automatic variable references the current record from the csv
I used Splatting for better readability of the code. This helps on cmdlets that take a long list of parameters and eliminates the use of the backtick.

Answer 2

Based on the above shared requirement, we understood that you want to pull the values of ResourceGroupName, VMName from the excel sheet & also you want to use those values in the script further.
Using PSExcel Module, We have written the below PowerShell Script which will pull the ResourceGroupName, VMName from excel & it will run Get-AzVM Cmdlet.
Before running the below PowerShell script , run the below cmdlet Save-Azcontext cmdlet it will saves the current authentication information for use in other PowerShell sessions.
Connect-AzAccount
Save-AzContext -Path C:\test.json
Here is the PowerShell script:
$currentDir = "C:\Program Files\WindowsPowerShell\Modules" ##pass the path of the PSexcel Module
Import-Module $currentDir"\PSExcel"
Import-AzContext -Path C:\test.json ##passing the azcontext file path which was saved earlier
$ExcelFile = "Give here the path of the current folder where scripts are stored"
$objExcel = New-Excel -Path $ExcelFile
$WorkBook = $objExcel|Get-Workbook
ForEach($Worksheet in #($Workbook.Worksheets)){
$totalNoOfRecords = $Worksheet.Dimension.Rows
$totalNoOfItems = $totalNoOfRecords-1
# Declare the starting positions first row and column names
$rowNo,$colResourceGroupName = 1,1
$rowNo,$colVMName = 1,2
if ($totalNoOfRecords -gt 1){
#Loop to get values from excel file
for($i=1;$i -le ($totalNoOfRecords-1);$i++){
$ResourceGroupName=$Worksheet.Cells.Item($rowNo+$i,$colResourceGroupName).Value
$VMName=$Worksheet.Cells.Item($rowNo+$i,$colVMName).Value
Get-AzVM -ResourceGroupName $ResourceGroupName -Name $VMName |select -Property Name,ResourceGroupName,Location
}
}
}
Here is the sample output for reference:
For more information ,you refer this blog post on How to Read excel file using PSExcel Module in PowerShell.