Change VM size to Standard_D32ds_v4. For some reason they are cheaper than D16 right now??? (#18953)

Remove no longer used "unstable" scaffolding.
Use ephemeral OS disks for better latency.
Add ability to change whether temp disks are used or explicitly provisioned disks are used; explicitly provisioned disks turned out to be more expensive than expected before.
Disable Windows Updates in the scale set because the machines are very short lived; working on a mechanism of patching the images instead.

1 files changed, 40 insertions, 18 deletions

diff --git a/scripts/azure-pipelines/linux/create-vmss.ps1 b/scripts/azure-pipelines/linux/create-vmss.ps1
index 52ce23774..d5651bd8e 100755
--- a/scripts/azure-pipelines/linux/create-vmss.ps1
+++ b/scripts/azure-pipelines/linux/create-vmss.ps1
@@ -20,9 +20,11 @@ This script assumes you have installed the OpenSSH Client optional Windows compo
 

 $Location = 'westus2'

 $Prefix = 'PrLin-' + (Get-Date -Format 'yyyy-MM-dd')

-$VMSize = 'Standard_D32_v4'

+$VMSize = 'Standard_D32ds_v4'

 $ProtoVMName = 'PROTOTYPE'

 $LiveVMPrefix = 'BUILD'

+$MakeInstalledDisk = $false

+$InstalledDiskSizeInGB = 1024

 $ErrorActionPreference = 'Stop'

 

 $ProgressActivity = 'Creating Scale Set'

@@ -189,6 +191,12 @@ $SasToken = New-AzStorageAccountSASToken `
 

 $SasToken = $SasToken.Substring(1) # strip leading ?

 

+Write-Progress `

+  -Activity $ProgressActivity `

+  -Status 'Creating storage account' `

+  -CurrentOperation 'Locking down network' `

+  -PercentComplete (100 / $TotalProgress * $CurrentProgress) # note no ++

+

 # Note that we put the storage account into the firewall after creating the above SAS token or we

 # would be denied since the person running this script isn't one of the VMs we're creating here.

 Set-AzStorageAccount `

@@ -292,7 +300,8 @@ Set-AzVM `
 $VM = Get-AzVM -ResourceGroupName $ResourceGroupName -Name $ProtoVMName

 $PrototypeOSDiskName = $VM.StorageProfile.OsDisk.Name

 $ImageConfig = New-AzImageConfig -Location $Location -SourceVirtualMachineId $VM.ID

-$Image = New-AzImage -Image $ImageConfig -ImageName $ProtoVMName -ResourceGroupName $ResourceGroupName

+$ImageName = "$Prefix-BaseImage"

+$Image = New-AzImage -Image $ImageConfig -ImageName $ImageName -ResourceGroupName $ResourceGroupName

 

 ####################################################################################################

 Write-Progress `

@@ -333,28 +342,41 @@ $Vmss = Add-AzVmssNetworkInterfaceConfiguration `
 $VmssPublicKey = New-Object -TypeName 'Microsoft.Azure.Management.Compute.Models.SshPublicKey' `

   -ArgumentList @('/home/AdminUser/.ssh/authorized_keys', $sshPublicKey)

 

-$Vmss = Set-AzVmssOsProfile `

-  -VirtualMachineScaleSet $Vmss `

-  -ComputerNamePrefix $LiveVMPrefix `

-  -AdminUsername AdminUser `

-  -AdminPassword $AdminPW `

-  -LinuxConfigurationDisablePasswordAuthentication $true `

-  -PublicKey @($VmssPublicKey) `

-  -CustomData ([Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes("#!/bin/bash`n/etc/provision-disks.sh`n")))

+if ($MakeInstalledDisk) {

+  $Vmss = Set-AzVmssOsProfile `

+    -VirtualMachineScaleSet $Vmss `

+    -ComputerNamePrefix $LiveVMPrefix `

+    -AdminUsername AdminUser `

+    -AdminPassword $AdminPW `

+    -LinuxConfigurationDisablePasswordAuthentication $true `

+    -PublicKey @($VmssPublicKey) `

+    -CustomData ([Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes("#!/bin/bash`n/etc/provision-disks.sh`n")))

+} else {

+  $Vmss = Set-AzVmssOsProfile `

+    -VirtualMachineScaleSet $Vmss `

+    -ComputerNamePrefix $LiveVMPrefix `

+    -AdminUsername AdminUser `

+    -AdminPassword $AdminPW `

+    -LinuxConfigurationDisablePasswordAuthentication $true `

+    -PublicKey @($VmssPublicKey)

+}

 

 $Vmss = Set-AzVmssStorageProfile `

   -VirtualMachineScaleSet $Vmss `

   -OsDiskCreateOption 'FromImage' `

-  -OsDiskCaching ReadWrite `

+  -OsDiskCaching ReadOnly `

+  -DiffDiskSetting Local `

   -ImageReferenceId $Image.Id

 

-$Vmss = Add-AzVmssDataDisk `

-  -VirtualMachineScaleSet $Vmss `

-  -Lun 0 `

-  -Caching 'ReadWrite' `

-  -CreateOption Empty `

-  -DiskSizeGB 1024 `

-  -StorageAccountType 'StandardSSD_LRS'

+if ($MakeInstalledDisk) {

+  $Vmss = Add-AzVmssDataDisk `

+    -VirtualMachineScaleSet $Vmss `

+    -Lun 0 `

+    -Caching 'ReadWrite' `

+    -CreateOption Empty `

+    -DiskSizeGB $InstalledDiskSizeInGB `

+    -StorageAccountType 'StandardSSD_LRS'

+}

 

 New-AzVmss `

   -ResourceGroupName $ResourceGroupName `