Verwalten von vDisks LoadBalancing

Die Wartung eines PVS-Servers ist relativ einfach. In einer Umgebung mit Lastenausgleich mit mindestens zwei PVS-Servern kann man einen Server herunterfahren, und die Verbindungen der Zielgeräte werden auf den anderen Server verschoben.

Leider gibt es manchmal eine Lücke zwischen Theorie und Realität… Wir hatten manchmal das Problem, dass die Sitzungen nicht an die zweite Sitzung übergeben wurden.

Ich sprach mit Sacha Thomet (@sacha81) und er erzählte mir von seinem Workarround. Ich sollte alle vDisks auf einem Server statisch konfigurieren, die Last ausgleichen und auf diese Weise die Sitzungen übertragen.

Da ich eine Umgebung mit einer großen Anzahl von vDisks verwalte, mache ich das nicht manuell. Aus diesem Grund habe ich dieses Skript / Cmdlet geschrieben. Affinität und Rebalancing werden nicht berücksichtigt.

Sei vorsichtig! Wenn du einen nicht funktionierenden Lastenausgleich hast, hast du ein Problem in deiner Konfiguration, und ich empfehle dir, das Problem als erstes zu beheben. Andernfalls wirst du früher oder später in Schwierigkeiten geraten.

Get-UDPvsDiskLoadblanceInfos

Mit diesem Cmdlet können die LoadBalancing Informationen von einem, mehreren oder allen vDisks ausgelesen werden.

Set-UDPvsDiskLoadblance

Um die vDisk Konfiguration vornehmen zu können, wird dieses Cmdlet verwendet. Es wird dabei die Site und den zu verwendeten Server angegeben, dies für einen oder mehrere Sites.

Set-UDPvsDiskLoadblance -Clear

Am Ende müssen die Einstellungen wieder zurückgesetzt werden, das heisst, alle vDisks wieder Loadbalancen.

Script

<#	
	.NOTES
	===========================================================================
	 Created on:   	29.03.2018
	 Created by:   	s.beckmann@unico.ws 
	 E-Mail:        s.beckmann@unico.ch
	 Organization: 	Unico Data AG
	 Filename:     	Manage_Loadbalancing_of_vDisks.ps1
	===========================================================================
	.DESCRIPTION
		Cmdlet to configure loadbalancing on vDisks
	.CALL BY
        Import as module and use the cmdlet.
	.VERSION HISTORY
	    1.0 29.03.2018 - Initial release
#>

Function Get-UDPvsDiskLoadblanceInfos {
    <#
        .SYNOPSIS 
        Get PVS vDisk information.

        .DESCRIPTION
        Get informations about the loadbalancing settings on vDisks.

        .PARAMETER DiskName
        The name of one or many vDisk, or wildecard

        .EXAMPLE
        Get-UDPvsDiskLoadblanceInfos -DiskName 'Win10'
        Get disk info about loadbalancing from vDsik Win10.

        .EXAMPLE
        Get-UDPvsDiskLoadblanceInfos -DiskName 'Win10','Win2012'
        Get disk info about loadbalancing from vDsik Win10 and Win2012.

        .EXAMPLE
        Get-UDPvsDiskLoadblanceInfos -DiskName '*'
        Get disk info about loadbalancing from all vDsiks.

        .EXAMPLE
        Get-UDPvsDiskLoadblanceInfos
        Get disk info about loadbalancing from all vDsiks.

    #>

    [CmdletBinding()]
    Param (
        [Parameter(
            Mandatory = $False,
            Position = 0,
            ValueFromPipeline = $True
        )]
        [System.String[]]
        $DiskName = '*'
    )

    foreach($Disk in $DiskName){
        $Disks = Get-PvsDiskLocator -Fields Name,SiteName,ServerName | Where-Object {$_.Name -like $Disk}
        ForEach ($D in $Disks){
            $Object = New-Object -TypeName psobject -Property @{
                DiskName   = $D.Name
                SiteName   = $D.SiteName
                Servername = $D.ServerName
            }
            Write-Output $Object
        }
    }
}

Function Set-UDPvsDiskLoadblance {
    <#
        .SYNOPSIS 
        Set PVS vDisk loadbalancing configuration.

        .DESCRIPTION
        Set loadbalancing configuration for one, many or all vDsiks. It's possible to set PVS Server per site and clear the static configuration.
        After loadbalancing is configured, the rebalancing will be started.

        .PARAMETER DiskName
        The name of one or manny vDisk, or wildecard

        .PARAMETER Server
        A hash table with Site and PVS Server

        .PARAMETER Clear
        To clear static loadbalancing configuration

        .EXAMPLE
        Set-UDPvsDiskLoadblance -DiskName 'Win10' -Server @{'Site1'='pvsserver01';'Site2'='pvsserver02'}
        Set the loadbalancing options for vDisk Win10, in Site1 to pvsserver01 and in Site2 to pvsserver02. Site1 has also pvsserver03 and Site2 pvsserver2 as PVS Site Server.

        .EXAMPLE
        Set-UDPvsDiskLoadblance -DiskName 'Win10','Win2012' -Server @{'Site1'='pvsserver01';'Site2'='pvsserver02'}
        Set the loadbalancing options for vDisk Win10 and Win2012, in Site1 to pvsserver01 and in Site2 to pvsserver02. Site1 has also pvsserver03 and Site2 pvsserver2 as PVS Site Server.

        .EXAMPLE
        Set-UDPvsDiskLoadblance -DiskName '*' -Server @{'Site1'='pvsserver01';'Site2'='pvsserver02'}
        Set the loadbalancing options for all vDisks, in Site1 to pvsserver01 and in Site2 to pvsserver02. Site1 has also pvsserver03 and Site2 pvsserver2 as PVS Site Server.

        .EXAMPLE
        Set-UDPvsDiskLoadblance -Server @{'Site1'='pvsserver01';'Site2'='pvsserver02'}
        Set the loadbalancing options for all vDisks, in Site1 to pvsserver01 and in Site2 to pvsserver02. Site1 has also pvsserver03 and Site2 pvsserver2 as PVS Site Server.

        .EXAMPLE
        Set-UDPvsDiskLoadblance -DiskName 'Win10' -Clear
        Set the loadbalancing options for vDisk Win10 to loadbalance.

        .EXAMPLE
        Set-UDPvsDiskLoadblance -DiskName 'Win10','Win2012' -Clear
        Set the loadbalancing options for vDisk Win10 and Win2012 to loadbalance.

        .EXAMPLE
        Set-UDPvsDiskLoadblance -DiskName '*' -Clear
        Set the loadbalancing options for all vDisks to loadbalance.

        .EXAMPLE
        Set-UDPvsDiskLoadblance -Clear
        Set the loadbalancing options for all vDisks to loadbalance.

    #>
    [CmdletBinding()]
    Param (
        [Parameter(
            Mandatory = $False,
            Position = 0,
            ValueFromPipeline = $True
        )]
        [System.String[]]
        $DiskName = '*',
        [Parameter(
            Mandatory = $False,
            Position = 1,
            ValueFromPipeline = $True
        )]
        [System.Collections.Hashtable]
        $Server,
        [Parameter(
            Mandatory = $False,
            Position = 2,
            ValueFromPipeline = $True
        )]
        [switch]
        $Clear = $False
    )

    foreach($Disk in $DiskName){
        $Disks = Get-PvsDiskLocator -Fields Name,SiteName,ServerName | Where-Object {$_.Name -like $Disk}
        ForEach ($D in $Disks){
            $Object = New-Object -TypeName psobject -Property @{
                DiskName   = $D.Name
                SiteName   = $D.SiteName
                Servername = $D.ServerName
                
            }
            
            If ($Clear){
                $D.ServerName = $Null
            } Else {
                $D.ServerName = $Server.($D.SiteName)
            }
            Set-PvsDiskLocator $D

            If (!$Clear){
                $ServerToClearDevice = Get-PvsServer -Fields Name,SiteName  | Where-Object {($_.SiteName -eq $D.SiteName) -and ($_.Name -ne $Server.($D.SiteName))}
                Invoke-PvsRebalanceDevices -ServerName $ServerToClearDevice.Name | Out-Null
            }

            $tmpD = Get-PvsDiskLocator -Fields Name,SiteName,ServerName | Where-Object {($_.Name -eq $D.Name) -and ($_.SiteName -eq $D.SiteName)}
            $Object | Add-Member -MemberType NoteProperty -Name 'NewServername' -Value $tmpD.ServerName

            Write-Output $Object

        }
    }
    If ($Clear){
        $Servers = Get-UDPvsDeviceLoadblanceInfos | Sort-Object SiteName
        $Sites = $Servers.SiteName | Select -Unique

        ForEach ($Site in $Sites){
            $Compare = $Servers | Where-Object {$_.SiteName -eq $Site}
            $max = ($Compare | measure-object -Property DeviceCount -maximum).maximum
            $ServerToRebalance = $Compare | ? { $_.DeviceCount -eq $max}
            ForEach ($S in $ServerToRebalance){
                Invoke-PvsRebalanceDevices -ServerName $S.Name | Out-Null
            }

        }
    }
}

Function Get-UDPvsDeviceLoadblanceInfos {
     <#
       .SYNOPSIS 
        Get information about the load from PVS Servers.

        .DESCRIPTION
        Get information about the device load from all PVS Server in any Site in the same Farm.

        .EXAMPLE
        Get-UDPvsDeviceLoadblanceInfos
        Get Informations about the loadbalancing.

    #>   
    $Info = Get-PvsServerInfo |Select Name,SiteName,DeviceCount
    Write-Output $Info

}

if ((Get-PSSnapin "Citrix.PVS.SnapIn" -EA silentlycontinue) -eq $null) {
try { Add-PSSnapin Citrix.PVS.SnapIn -ErrorAction Stop }
catch { write-error "Error loading Citrix.PVS.SnapIn PowerShell snapin"; Return }
}

cls

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.NOTES

===========================================================================

Created on: 29.03.2018

Created by: s.beckmann@unico.ws

E-Mail: s.beckmann@unico.ch

Organization: Unico Data AG

Filename: Manage_Loadbalancing_of_vDisks.ps1

===========================================================================

.DESCRIPTION

Cmdlet to configure loadbalancing on vDisks

.CALL BY

Import as module and use the cmdlet.

.VERSION HISTORY

1.0 29.03.2018 - Initial release

Function Get-UDPvsDiskLoadblanceInfos {

.SYNOPSIS

Get PVS vDisk information.

.DESCRIPTION

Get informations about the loadbalancing settings on vDisks.

.PARAMETER DiskName

The name of one or many vDisk, or wildecard

.EXAMPLE

Get-UDPvsDiskLoadblanceInfos -DiskName 'Win10'

Get disk info about loadbalancing from vDsik Win10.

.EXAMPLE

Get-UDPvsDiskLoadblanceInfos -DiskName 'Win10','Win2012'

Get disk info about loadbalancing from vDsik Win10 and Win2012.

.EXAMPLE

Get-UDPvsDiskLoadblanceInfos -DiskName '*'

Get disk info about loadbalancing from all vDsiks.

.EXAMPLE

Get-UDPvsDiskLoadblanceInfos

Get disk info about loadbalancing from all vDsiks.

[CmdletBinding()]

Param (

[Parameter(

Mandatory = $False,

Position = 0,

ValueFromPipeline = $True

)]

[System.String[]]

$DiskName = '*'

)

foreach($Disk in $DiskName){

$Disks = Get-PvsDiskLocator -Fields Name,SiteName,ServerName | Where-Object {$_.Name -like $Disk}

ForEach ($D in $Disks){

$Object = New-Object -TypeName psobject -Property @{

DiskName = $D.Name

SiteName = $D.SiteName

Servername = $D.ServerName

}

Write-Output $Object

}

Function Set-UDPvsDiskLoadblance {

.SYNOPSIS

Set PVS vDisk loadbalancing configuration.

.DESCRIPTION

Set loadbalancing configuration for one, many or all vDsiks. It's possible to set PVS Server per site and clear the static configuration.

After loadbalancing is configured, the rebalancing will be started.

.PARAMETER DiskName

The name of one or manny vDisk, or wildecard

.PARAMETER Server

A hash table with Site and PVS Server

.PARAMETER Clear

To clear static loadbalancing configuration

.EXAMPLE

Set-UDPvsDiskLoadblance -DiskName 'Win10' -Server @{'Site1'='pvsserver01';'Site2'='pvsserver02'}

Set the loadbalancing options for vDisk Win10, in Site1 to pvsserver01 and in Site2 to pvsserver02. Site1 has also pvsserver03 and Site2 pvsserver2 as PVS Site Server.

.EXAMPLE

Set-UDPvsDiskLoadblance -DiskName 'Win10','Win2012' -Server @{'Site1'='pvsserver01';'Site2'='pvsserver02'}

Set the loadbalancing options for vDisk Win10 and Win2012, in Site1 to pvsserver01 and in Site2 to pvsserver02. Site1 has also pvsserver03 and Site2 pvsserver2 as PVS Site Server.

.EXAMPLE

Set-UDPvsDiskLoadblance -DiskName '*' -Server @{'Site1'='pvsserver01';'Site2'='pvsserver02'}

Set the loadbalancing options for all vDisks, in Site1 to pvsserver01 and in Site2 to pvsserver02. Site1 has also pvsserver03 and Site2 pvsserver2 as PVS Site Server.

.EXAMPLE

Set-UDPvsDiskLoadblance -Server @{'Site1'='pvsserver01';'Site2'='pvsserver02'}

Set the loadbalancing options for all vDisks, in Site1 to pvsserver01 and in Site2 to pvsserver02. Site1 has also pvsserver03 and Site2 pvsserver2 as PVS Site Server.

.EXAMPLE

Set-UDPvsDiskLoadblance -DiskName 'Win10' -Clear

Set the loadbalancing options for vDisk Win10 to loadbalance.

.EXAMPLE

Set-UDPvsDiskLoadblance -DiskName 'Win10','Win2012' -Clear

Set the loadbalancing options for vDisk Win10 and Win2012 to loadbalance.

.EXAMPLE

Set-UDPvsDiskLoadblance -DiskName '*' -Clear

Set the loadbalancing options for all vDisks to loadbalance.

.EXAMPLE

Set-UDPvsDiskLoadblance -Clear

Set the loadbalancing options for all vDisks to loadbalance.

[CmdletBinding()]

Param (

[Parameter(

Mandatory = $False,

Position = 0,

ValueFromPipeline = $True

)]

[System.String[]]

$DiskName = '*',

[Parameter(

Mandatory = $False,

Position = 1,

ValueFromPipeline = $True

)]

[System.Collections.Hashtable]

$Server,

[Parameter(

Mandatory = $False,

Position = 2,

ValueFromPipeline = $True

)]

[switch]

$Clear = $False

)

foreach($Disk in $DiskName){

$Disks = Get-PvsDiskLocator -Fields Name,SiteName,ServerName | Where-Object {$_.Name -like $Disk}

ForEach ($D in $Disks){

$Object = New-Object -TypeName psobject -Property @{

DiskName = $D.Name

SiteName = $D.SiteName

Servername = $D.ServerName

}

If ($Clear){

$D.ServerName = $Null

} Else {

$D.ServerName = $Server.($D.SiteName)

}

Set-PvsDiskLocator $D

If (!$Clear){

$ServerToClearDevice = Get-PvsServer -Fields Name,SiteName | Where-Object {($_.SiteName -eq $D.SiteName) -and ($_.Name -ne $Server.($D.SiteName))}

Invoke-PvsRebalanceDevices -ServerName $ServerToClearDevice.Name | Out-Null

}

$tmpD = Get-PvsDiskLocator -Fields Name,SiteName,ServerName | Where-Object {($_.Name -eq $D.Name) -and ($_.SiteName -eq $D.SiteName)}

$Object | Add-Member -MemberType NoteProperty -Name 'NewServername' -Value $tmpD.ServerName

Write-Output $Object

}

If ($Clear){

$Servers = Get-UDPvsDeviceLoadblanceInfos | Sort-Object SiteName

$Sites = $Servers.SiteName | Select -Unique

ForEach ($Site in $Sites){

$Compare = $Servers | Where-Object {$_.SiteName -eq $Site}

$max = ($Compare | measure-object -Property DeviceCount -maximum).maximum

$ServerToRebalance = $Compare | ? { $_.DeviceCount -eq $max}

ForEach ($S in $ServerToRebalance){

Invoke-PvsRebalanceDevices -ServerName $S.Name | Out-Null

}

Function Get-UDPvsDeviceLoadblanceInfos {

.SYNOPSIS

Get information about the load from PVS Servers.

.DESCRIPTION

Get information about the device load from all PVS Server in any Site in the same Farm.

.EXAMPLE

Get-UDPvsDeviceLoadblanceInfos

Get Informations about the loadbalancing.

$Info = Get-PvsServerInfo |Select Name,SiteName,DeviceCount

Write-Output $Info

}

if ((Get-PSSnapin "Citrix.PVS.SnapIn" -EA silentlycontinue) -eq $null) {

try { Add-PSSnapin Citrix.PVS.SnapIn -ErrorAction Stop }

catch { write-error "Error loading Citrix.PVS.SnapIn PowerShell snapin"; Return }

}

cls