I found this script on the internet. I modified it a bit to use it as my rolling vSAN cluster reboot script. Problem is it reboots each host twice before moving onto the next. Here is the code, any ideas why it does this?
# Check to make sure both arguments exist
if ($args.count -ne 2) {
Write-Host "Usage: reboot-vmcluster.ps1 <vCenter> <HostList.txt>"
exit
}
# Set vCenter and Cluster name from Arg
$vCenterServer = $args[0]
$VIHosts = $args[1]
# Connect to vCenter
Connect-VIServer -Server $vCenterServer | Out-Null
# Get VMware Server Object based on name passed as arg
$ESXiServers = Get-Content $VIHosts | %{Get-VMHost $_}
# Reboot ESXi Server Function
Function RebootESXiServer ($CurrentServer) {
# Get VI-Server name
$ServerName = $CurrentServer.Name
# Put server in maintenance mode
Write-Host "** Rebooting $ServerName **"
Write-Host "Entering Maintenance Mode"
Set-VMhost $CurrentServer -State maintenance -Evacuate -vsandatamigrationmode EnsureAccessibility | Out-Null
# Reboot host
Write-Host "Rebooting"
Restart-VMHost $CurrentServer -confirm:$false | Out-Null
# Wait for Server to show as down
do {
sleep 15
$ServerState = (get-vmhost $ServerName).ConnectionState
}
while ($ServerState -ne "NotResponding")
Write-Host "$ServerName is Down"
# Wait for server to reboot
do {
sleep 60
$ServerState = (get-vmhost $ServerName).ConnectionState
Write-Host "Waiting for Reboot …"
}
while ($ServerState -ne "Maintenance")
Write-Host "$ServerName is back up"
# Exit maintenance mode
Write-Host "Exiting Maintenance mode"
Set-VMhost $CurrentServer -State Connected | Out-Null
Write-Host "** Reboot Complete **"
Write-Host ""
}
## MAIN
foreach ($ESXiServer in $ESXiServers) {
RebootESXiServer ($ESXiServer)
}
# Disconnect from vCenter
Disconnect-VIServer -Server $vCenterServer -Confirm:$False
