Script: Copy-NFS-Setup

########################################################################################
## Copy-NFS-Setup.ps1
## Version 1.0
## Auxilium Technology AS, June 2015
## http://www.auxilium.no
##
## Description:
## This script reads NFS setup from a source host, compare with ## a desination host and add it if it doesn't exist.
##
## Script created: June 2015
## Bjørn-Ove Kiil (bok@auxilium.no)
##
## Usage:  .\Copy-NFS-Setup.ps1 <source host> <destination host> ## ## Example: .\Copy-NFS-Setup.ps1 my-esxi-01 my-esxi-02 
##
## Another example: .\Copy-NFS-Setup.ps1 my-esxi-01 *     <-- my-esxi-01 is the source, * is all other hosts in your vCenter!
##
##############################################################################################

## Checking if there are arguments provided
if(!($args[0] -or $args[1]))
{
    Write-Host -Fore Yellow "Missing input arguments!"
	Write-Host -Fore Yellow "Usage:"
	Write-Host -Fore Yellow ".\Copy-NFS-Setup.ps1 <source host> <destination host>"
	Write-Host ""
	Write-Host -Fore Yellow "Example: .\Copy-NFS-Setup.ps1 my-esxi-01 my-esxi-02"
	exit
}
if(!(Get-VMhost $args[0] -ErrorAction SilentlyContinue)) {
	Write-Host -Fore Red "Can not find the source host with the name:" $args[0]
	Exit
}
if(!(Get-VMhost $args[1] -ErrorAction SilentlyContinue)) {
	Write-Host -Fore Red "Can not find the destination host with the name:" $args[1]
	Exit
}
##

$SourceHost = Get-VMHost $args[0]	## Getting the preferred NFS setup from a source host

$DestinationHosts = Get-VMHost $args[1] | ? {$_.Name -ne $SourceHost.Name}	## Defining one or more (*) destination hosts

foreach ($NFS_DS_Source in ($SourceHost | Get-Datastore | ? {$_.Type -eq "NFS"} )) {
	$SharePath = $NFS_DS_Source.RemotePath  ## The shared path on the remote NFS server
	$ShareHost = $NFS_DS_Source.RemoteHost  ## The remote NFS server
	$ShareName = $NFS_DS_Source.Name        ## NFS datastore name

	foreach ( $DestinationHost in $DestinationHosts)
	{
		## Check if the NFS datastore already exists on the desination host
		If ( $DestinationHost | Get-Datastore | ? { $_.Name -eq $ShareName -and $_.Type -eq "NFS"} -ErrorAction SilentlyContinue)
		{
			Write-Host "NFS mount $ShareName already mountet on $DestinationHost" -fore Green
		}
		
		## Check if the NFS datastore doesn't exist, and create it...
		If (!( $DestinationHost | Get-Datastore | ? { $_.Name -eq $ShareName -and $_.Type -eq "NFS"} -ErrorAction SilentlyContinue))
		{
			Write-Host "NFS mount $ShareName does not exist on $DestinationHost" -fore RED
			Write-Host "Mounting: $ShareName from"$ShareHost":"$SharePath -fore Yellow
			New-Datastore -Nfs -VMhost $DestinationHost -Name $ShareName -Path $SharePath -NfsHost $ShareHost | Out-Null
		}
	}
}