刚刚的一篇Blog采用Json Template的方式从已有的VHD创建了一台新的VM。由于Json Template封装的比较好，可以改的内容不多。

下面将介绍通过用Powershell来从已有的VHD创建一台新的VM。

由于Powershell中的各种变量、参数都是可以定义的，所以可以自己去修改、创建。

下面是具体的脚本：

function vm-fromvhd{

param(

#The VM resource group

[Parameter(Mandatory=$true)]

[String]$rgname,

#The VM name

[Parameter(Mandatory=$true)]

[String]$vmname,

#The High Avalibility Set name

[Parameter(Mandatory=$true)]

[String]$hasetname,

#The new VM IP name

[Parameter(Mandatory=$true)]

[String]$vmpipname,

#The Vnet Name

[Parameter(Mandatory=$true)]

[String]$vnetname,

#The Subnet Name

[Parameter(Mandatory=$true)]

[String]$subnet1,

#The new VM size

[Parameter(Mandatory=$true)]

[String]$vmsize,

#The existing VHD URL

[Parameter(Mandatory=$true)]

[String]$osDiskURL

)

#Get a random text as the random text

$hash = $null

for ($i = 0; $i -le 4; $i++){

$j = (97..122) | Get-Random -Count 1 | % {[char]$_}

$hash = $hash + $j

}

for ($i = 0; $i -le 4; $i++){

$j = (48..57) | Get-Random -Count 1 | % {[char]$_}

$hash = $hash + $j

}

#check the Resource Group, if not exist, create

$rgs = Get-AzureRmResourceGroup -Location "China East"

$rgrslt = $false

foreach ($rg in $rgs){if($rg.ResourceGroupName -eq $rgname){$rgrslt = $true;break}}

if(-not $rgrslt) {$rg = New-AzureRmResourceGroup -Name $rgname -Location "China East"}

#check the High Avalibility Set, if not exist, create

foreach ($rgh in $rgs){

$haset = Get-AzureRmAvailabilitySet -ResourceGroupName $rgh.ResourceGroupName -Name $hasetname -ErrorAction Ignore;

if($haset.name -match $hasetname){

if($haset.ResourceGroupName -match $rgname){break;}

else{write-host "Please change another haset name";exit;}

}

}

if(-not $haset.Name) {$haset = new-AzureRmAvailabilitySet -ResourceGroupName $rgname -Name $hasetname -Location $rg.Location}

#check the Vnet, if not exist, create

$vnets = Get-AzureRmVirtualNetwork

$vnetrslt = $false

foreach ($vnet in $vnets){if($vnet.Name -eq $vnetname){$vnetrslt = $true;break}}

if(-not $vnetrslt) {$subnet1 = New-AzureRmVirtualNetworkSubnetConfig -Name $subnet1 -AddressPrefix 172.16.1.0/24;$vnet = New-AzureRmVirtualNetwork -Name $vnetname -AddressPrefix 172.16.0.0/16 -Subnet $subnet1 -ResourceGroupName $rgname -Location $rg.Location}

#check the PIP address, if not exist, create

$piprslt = Test-AzureRmDnsAvailability -DomainNameLabel $vmpipname -Location $rg.location

if(-not $piprslt){$vmpipname = $hash + $vmpipname}

$pip = New-AzureRmPublicIpAddress -Name $vmpipname -AllocationMethod Dynamic -DomainNameLabel $vmpipname -ResourceGroupName $rgname -Location $rg.Location

#check the NIC, if not exist, create

$nics = Get-AzureRmNetworkInterface

$nicrslt = $false

foreach($nic in $nics){if($nic.name -eq $vmname){$nicrslt = $true;break}}

if($nicrslt){$nicname = $hash+$vmname}else{$nicname = $vmname}

$nic = New-AzureRmNetworkInterface -Name $nicname -ResourceGroupName $rgname -Location $rg.Location -SubnetId $vnet.Subnets[0].Id -PublicIpAddressId $pip.Id

#create the VM

$vmosname = $hash + $vmname + "osDisk"

$vm = New-AzureRmVMConfig -VMName $vmname -VMSize $vmsize -AvailabilitySetId $haset.Id

$vm = Add-AzureRmVMNetworkInterface -VM $vm -NetworkInterface $nic

$vm = Set-AzureRmVMOSDisk -VM $vm -Name $vmosname -VhdUri $osDiskURL -CreateOption Attach -Linux

New-AzureRmVM -ResourceGroupName $rgname -Location "China East" -VM $vm

}

$rgname = "vnet-bgp"

$vmname = "hwfromvhd02"

$hasetname = "hwvhdtest" #Please check the haset isn‘t avalible

$vmpipname = "hwvhdtestpip"

$vnetname = "vnet-bgp-3"

$subnet1 = "vlan1"

$vmsize = "Standard_D1"

$osDiskURL = "https://gwzdiskdisks420.blob.core.chinacloudapi.cn/vhds/hwvntp0120170401203214.vhd"

vm-fromvhd -rgname $rgname -vmname $vmname -hasetname $hasetname -vmpipname $vmpipname -vnetname $vnetname -subnet1 $subnet1 -vmsize $vmsize -osDiskURL $osDiskURL

Azure上采用Powershell从已有的VHD创建VM