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+function Start-AzureVm {
+ # Supply a VM name (or an unambiguous part of it) and start the machine.
+ <#
+ .SYNOPSIS
+ Start an Azure VM whose name contains the input string.
+
+ .DESCRIPTION
+ If we can unambiguously determine a single VM name inside the subscription
+ we are logged into through the input string, we will start
+ the machine.
+
+ This function was built as we want to have terse input and a counterpart
+ to Stop-AzVm.
+
+ .INPUTS
+ String. The names or unambiguous parts of the names of the VMs we intend to
+ start.
+
+ .OUTPUTS
+ String. Status messages and the actual AzureCLI outputs.
+ #>
+ Param (
+ [Parameter(
+ Mandatory=$true,
+ ValueFromPipelineByPropertyName=$true,
+ HelpMessage="Strings that are VM names or are part of single unambiguous VMs",
+ Position=0
+ )
+ ]
+ [ValidateLength(1,64)]
+ [string[]]
+ $VmName
+ )
+ $ErrorActionPreference = 'Stop'
+ $resVms = @()
+ Write-Host "Checking state of VM(s)..."
+ foreach ($singlevm in $VmName) {
+ $myvm = azvmidentify -VmName $singlevm
+ # Since az vm start is taking quite its time even when the machine is started, we should check ourselves whether the machine is running:
+ if ( (az vm show -d -g $myvm.resourceGroup -n $myvm.name -o json | COnvertFrom-Json).powerState.Contains('running')) {
+ Write-Host "VM $($myvm.name) (RG: $($myvm.resourceGroup)) is already running."
+ } else {
+ Write-Host "VM $($myvm.name) (RG: $($myvm.resourceGroup)) is not started."
+ $resVms += $myvm
+ }
+ }
+ Write-Host "Starting remaining $($resVms.Count) machine(s)..."
+ $jobs = (
+ $resVms | ForEach-Object {
+ # Write-Host "Starting $($_.name) (RG: $($_.resourceGroup)):"
+ $myvm = $_
+ Start-ThreadJob -ScriptBlock {
+ $this = $using:myvm
+ az vm start -o jsonc -g $this.resourceGroup -n $this.name
+ }
+ # Write-Host "...done."
+ }
+ )
+ $jobs | Receive-Job -Wait -AutoRemoveJob
+}