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function Stop-AzureVm {
# Supply a VM name (or an unambiguous part of it), stop, and deallocate the machine.
<#
.SYNOPSIS
Stop **and** deallocate 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 stop and deallocate
the machine.
This function was built as we want to have terse input and we do not want to
be billed for machines we stop, the latter requiring two actual commands.
.INPUTS
String. The names or unambiguous parts of the names of the VMs we intend to
stop and deallocate.
.OUTPUTS
String. Status messages and the actual AzureCLI outputs.
#>
[Alias(
'azvmstop',
'azvmd',
'Deallocate-AzVm'
)]
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'
$stopVms = @()
$deallocVms = @()
Write-Host "Checking state of VM(s)..."
foreach ($singlevm in $VmName) {
$myvm = azvmidentify -VmName $singlevm
# Since az vm stop is taking quite its time even when the machine is started, we should check ourselves whether the machine is running:
$myPowerState = (az vm show -d -g $myvm.resourceGroup -n $myvm.name -o json | ConvertFrom-Json).powerState
if ( ($myPowerState -match 'stopped$') ) {
Write-Host "VM $($myvm.name) (RG: $($myvm.resourceGroup)) is already stopped."
$deallocVms += $myvm
} else {
if ( ($myPowerState -match 'deallocated$') ) {
Write-Host "VM $($myvm.name) (RG: $($myvm.resourceGroup)) is already deallocated."
} else {
$stopVms += $myvm
$deallocVms += $myvm
}
}
}
Write-Host "Stopping $($stopVms.Count) machine(s)..."
$jobs = (
$stopVms | ForEach-Object {
# Write-Host "Starting $($_.name) (RG: $($_.resourceGroup)):"
$myvm = $_
Start-ThreadJob -ScriptBlock {
$this = $using:myvm
# Write-Host "Stopping $($myvm.name) (RG: $($myvm.resourceGroup)):"
az vm stop --output jsonc --resource-group $($this.resourceGroup) --name $($this.name)
# Write-Host "...done."
}
}
)
$jobs | Receive-Job -Wait -AutoRemoveJob
Write-Host "Deallocating $($deallocVms.Count) machine(s)..."
$jobs = (
$deallocVms | ForEach-Object {
$myvm = $_
Start-ThreadJob -ScriptBlock {
$this = $using:myvm
az vm deallocate --output jsonc --resource-group $($this.resourceGroup) --name $($this.name)
}
}
)
$jobs | Receive-Job -Wait -AutoRemoveJob
}
|
