modules/BackendPoolMigration/BackendPoolMigration.psm1
# Load Modules Import-Module ((Split-Path $PSScriptRoot -Parent) + "/Log/Log.psd1") Import-Module ((Split-Path $PSScriptRoot -Parent) + "/UpdateVmss/UpdateVmss.psd1") Import-Module ((Split-Path $PSScriptRoot -Parent) + "/UpdateVmssInstances/UpdateVmssInstances.psd1") Import-Module ((Split-Path $PSScriptRoot -Parent) + "/GetVmssFromBasicLoadBalancer/GetVmssFromBasicLoadBalancer.psd1") function _HardCopyObject { [CmdletBinding()] param ( [Parameter(Mandatory = $True)][System.Collections.Generic.List[Microsoft.Azure.Management.Compute.Models.SubResource]] $listSubResource ) $options = [System.Text.Json.JsonSerializerOptions]::new() $options.WriteIndented = $true $options.IgnoreReadOnlyProperties = $true $cgenericListSubResource = [System.Text.Json.JsonSerializer]::Serialize($listSubResource, "System.Collections.Generic.List[Microsoft.Azure.Management.Compute.Models.SubResource]", $options) $cgenericListSubResource = [System.Text.Json.JsonSerializer]::Deserialize($cgenericListSubResource, "System.Collections.Generic.List[Microsoft.Azure.Management.Compute.Models.SubResource]") # To preserve the original object type in the return we must use a , before the object to be returned return , [System.Collections.Generic.List[Microsoft.Azure.Management.Compute.Models.SubResource]]$cgenericListSubResource } function _MigrateHealthProbe{ [CmdletBinding()] param ( [Parameter(Mandatory = $True)][Microsoft.Azure.Commands.Network.Models.PSLoadBalancer] $StdLoadBalancer, [Parameter(Mandatory = $True)][Microsoft.Azure.Commands.Compute.Automation.Models.PSVirtualMachineScaleSet] $vmss, [Parameter(Mandatory = $True)][Microsoft.Azure.Commands.Compute.Automation.Models.PSVirtualMachineScaleSet] $refVmss ) log -Message "[_MigrateHealthProbe] Migrating Health Probes" try { $refHealthProbe = $refVmss.VirtualMachineProfile.NetworkProfile.HealthProbe if(![string]::IsNullOrEmpty($refHealthProbe)){ $refProbeName = $refHealthProbe.Id.Split('/')[-1] log -Message "[_MigrateHealthProbe] Health Probes found in reference VMSS $($refProbeName)" $refProbeId = ($StdLoadBalancer.Probes | Where-Object{$_.Name -eq $refProbeName}).id $vmss.VirtualMachineProfile.NetworkProfile.HealthProbe = $refProbeId } else{ log -Message "[_MigrateHealthProbe] Health Probes not found in reference VMSS $($refVmss.Name)" } } catch { $message = @" [_MigrateHealthProbe] An error occured migrating a health probe to the VMSS. To recover address the following error, and try again specifying the -FailedMigrationRetryFilePath parameter and Basic Load Balancer backup State file located either in this directory or the directory specified with -RecoveryBackupPath. `nError message: $_ "@ log 'Error' $message -terminateOnError } log -Message "[_MigrateHealthProbe] Migrating Health Probes completed" } function _RestoreUpgradePolicyMode{ param ( [Parameter(Mandatory = $True)][Microsoft.Azure.Commands.Compute.Automation.Models.PSVirtualMachineScaleSet] $vmss, [Parameter(Mandatory = $True)][Microsoft.Azure.Commands.Compute.Automation.Models.PSVirtualMachineScaleSet] $refVmss ) log -Message "[_RestoreUpgradePolicyMode] Restoring VMSS Upgrade Policy Mode" if ($vmss.UpgradePolicy.Mode -ne $refVmss.UpgradePolicy.Mode) { log -Message "[_RestoreUpgradePolicyMode] Restoring VMSS Upgrade Policy Mode to $($refVmss.UpgradePolicy.Mode)" $vmss.UpgradePolicy.Mode = $refVmss.UpgradePolicy.Mode } else { log -Message "[_RestoreUpgradePolicyMode] VMSS Upgrade Policy Mode not changed" } log -Message "[_RestoreUpgradePolicyMode] Restoring VMSS Upgrade Policy Mode completed" } function _MigrateNetworkInterfaceConfigurations { param ( [Parameter(Mandatory = $True)][Microsoft.Azure.Commands.Network.Models.PSLoadBalancer] $BasicLoadBalancer, [Parameter(Mandatory = $True)][Microsoft.Azure.Commands.Network.Models.PSLoadBalancer] $StdLoadBalancer, [Parameter(Mandatory = $True)][Microsoft.Azure.Commands.Compute.Automation.Models.PSVirtualMachineScaleSet] $vmss ) log -Message "[_MigrateNetworkInterfaceConfigurations] Adding BackendAddressPool to VMSS $($vmss.Name)" foreach ($networkInterfaceConfiguration in $vmss.VirtualMachineProfile.NetworkProfile.NetworkInterfaceConfigurations) { $genericListSubResource = New-Object System.Collections.Generic.List[Microsoft.Azure.Management.Compute.Models.SubResource] foreach ($ipConfiguration in $networkInterfaceConfiguration.IpConfigurations) { If (![string]::IsNullOrEmpty($ipConfiguration.LoadBalancerBackendAddressPools)) { $genericListSubResource.AddRange($ipConfiguration.LoadBalancerBackendAddressPools) } foreach($BackendAddressPool in $BasicLoadBalancer.BackendAddressPools){ foreach($BackendIpConfiguration in $BackendAddressPool.BackendIpConfigurations){ $lbBeNicName = $BackendIpConfiguration.Id.Split('/')[-3] $lbBeipConfigName = $BackendIpConfiguration.Id.Split('/')[-1] if($lbBeNicName -eq $networkInterfaceConfiguration.Name -and $lbBeipConfigName -eq $ipConfiguration.Name){ try { $subResource = New-Object Microsoft.Azure.Management.Compute.Models.SubResource $subResource.Id = ($StdLoadBalancer.BackendAddressPools | Where-Object { $_.Name -eq $BackendAddressPool.Name }).Id log -Message "[_MigrateNetworkInterfaceConfigurations] Adding BackendAddressPool $($subResource.Id.Split('/')[-1]) to VMSS Nic: $lbBeNicName ipConfig: $lbBeipConfigName" $genericListSubResource.Add($subResource) } catch { $message = @" [_MigrateNetworkInterfaceConfigurations] An error occured creating a new VMSS IP Config. To recover address the following error, and try again specifying the -FailedMigrationRetryFilePath parameter and Basic Load Balancer backup State file located either in this directory or the directory specified with -RecoveryBackupPath. `nError message: $_ "@ log 'Error' $message -terminateOnError } } } } # Taking a hard copy of the object and assigning, it's important because the object was passed by reference $ipConfiguration.LoadBalancerBackendAddressPools = _HardCopyObject -listSubResource $genericListSubResource $genericListSubResource.Clear() } } log -Message "[_MigrateNetworkInterfaceConfigurations] Migrate NetworkInterface Configurations completed" } function BackendPoolMigration { [CmdletBinding()] param ( [Parameter(Mandatory = $True)][Microsoft.Azure.Commands.Network.Models.PSLoadBalancer] $BasicLoadBalancer, [Parameter(Mandatory = $True)][Microsoft.Azure.Commands.Network.Models.PSLoadBalancer] $StdLoadBalancer, [Parameter(Mandatory = $True)][Microsoft.Azure.Commands.Compute.Automation.Models.PSVirtualMachineScaleSet] $refVmss ) log -Message "[BackendPoolMigration] Initiating Backend Pool Migration" log -Message "[BackendPoolMigration] Adding Standard Load Balancer back to the VMSS" log -Message "[BackendPoolMigration] Building VMSS object from Basic Load Balancer $($BasicLoadBalancer.Name)" $vmss = GetVmssFromBasicLoadBalancer -BasicLoadBalancer $BasicLoadBalancer # Migrating Health Probe in case it exist _MigrateHealthProbe -StdLoadBalancer $StdLoadBalancer -vmss $vmss -refVmss $refVmss # Migrating Network Interface Configurations back to the VMSS _MigrateNetworkInterfaceConfigurations -BasicLoadBalancer $BasicLoadBalancer -StdLoadBalancer $StdLoadBalancer -vmss $vmss # Update VMSS on Azure UpdateVmss -vmss $vmss # Update Instances UpdateVmssInstances -vmss $vmss # Restore VMSS Upgrade Policy Mode _RestoreUpgradePolicyMode -vmss $vmss -refVmss $refVmss # Update VMSS on Azure UpdateVmss -vmss $vmss #log -Message "[BackendPoolMigration] Updating VMSS Instances $($vmss.Name)" #UpdateVmssInstances -vmss $vmss #log -Message "[BackendPoolMigration] StackTrace $($StackTrace)" -Severity "Debug" log -Message "[BackendPoolMigration] Backend Pool Migration Completed" } Export-ModuleMember -Function BackendPoolMigration |