Hello,
i found this script on the web and want to use it in my environemnt which is vSphere 6.0 without DRS.
Scripting a DRS Replacement Using PowerCLI | Scott Warren
Unfortunatly it is not working for me. Maybe somebody can help me with it. Looks like the second function is not working.
I get following error: The Property "Host" cannot be found on this object. Verify that his property exist.
Thanks
Set-StrictMode -version 2
function GetPercentages(){
# get all the hosts
$objHosts = get-vmhost;
# loop through each of the hosts and calculate the percentage of memory used
foreach($objHost in $objHosts){
$objHost | add-member NoteProperty PercentMemory ($objHost.MemoryUsageMB/$objHost.MemoryTotalMB *100)
$objHost
}
}
function GetVMToMove($strHost, $arrAllVMs){
#get all the VMs that are powered on on this host
$objVMs = get-vm | where {($_.Host.Name -eq $strHost) -and ($_.PowerState -eq "PoweredOn")}
# check to see if there is a static file
if(test-path "balanced.csv"){
# read in the static file
$arrStatic = import-csv "balanced.csv"
# loop through all the static entries
foreach($objStatic in $arrStatic){
#echo $objStatic.VM;
$objVM = $objVM | where {$_.Name -ne ($objStatic.Name)}
}
}
# sort based on the amount of memory used
$objVMs = $objVMs | sort "Memory*"
# return the VM using the least amount of RAM
$objVMs[0];
}
# get all the VMs
$arrAllVMs = get-vm | where {$_.PowerState -eq "PoweredOn"}
# check to see if there is a static file
if(test-path "balanced2.csv"){
# read in the static file
$arrStatic = import-csv "balanced.csv"
# move the static VMs to the correct location
echo "Moving static VMs to the correct host."
# loop through all the VMs
foreach($objStatic in $arrStatic){
# get the VM
$objVM = get-VM $objStatic.Name;
# check to see if the VM is not on the correct host
if($objVM.Host.Name -ne $objStatic.Host){
echo ("Moving " + $objStatic.Name);
#move the VM
$objVM | move-vm -destination (get-vmhost $objStatic.Host)
}
}
}
# a flag to indicate that we moved a VM
$bMoved = $true;
# keep looping through the list until no VMs have been moved
while($bMoved){
# get the hosts with percentages
$objHosts = GetPercentages | sort PercentMemory -descending | select Name, PercentMemory
# calculate the average memory
$intAverage = 0;
$intCount = 0;
foreach($objHost in $objHosts){
$intAverage += $objHost.PercentMemory;
$intCount++;
}
$intAverage /= $intCount;
# display the average memory used
echo ("Average is " + $intAverage);
# display the hosts so it's easier to know what's going on
$objHosts | select Name, PercentMemory;
# determine the host with the least amount of RAM used
$strDest = $objHosts[$objHosts.Count-1].Name;
# this is a flag to see if anything has been moved
$bMoved = $false;
# loop through the hosts
foreach($objHost in $objHosts){
# check to see if this is more than 10% of the average
if($objHost.PercentMemory -gt ($intAverage + 10)){
# get the name of the VM to move
$objVM = GetVMToMove $objHost.Name
# display some output to let the user know what is being moved
echo ('Moving ' + $objVM.Name + " from " + $objHost.Name);
#move the VM
$objVM | move-vm -destination (get-vmhost $strDest);
# flag that a VM has been moved
$bMoved = $true;
}
}
}
