Add-PSSnapin "VMware.VimAutomation.Core"

Add-PSSnapIn "VMware.VumAutomation"

# Connect to vCenter

$VC = Connect-VIServer (Read-Host "Enter vCenter server")

$vumConfig = Get-VumConfig

$EsxHost = Get-Inventory -Name (Read-Host "Enter ESX Host")

$CriticalHost = Get-Baseline -Name "Critical Host Updates"

$NonCriticalHost = Get-Baseline -Name "Non-critical Host Updates"

# Enter Maintenance mode

Set-VMHost $EsxHost -State Maintenance

# Attach baseline

Attach-Baseline -Entity $EsxHost -Baseline $CriticalHost, $NonCriticalHost

# Check Compliance

$ScanTask = Scan-Inventory $EsxHost -RunAsync

Wait-Task -Task $ScanTask

Get-Compliance -Entity $EsxHost

# Remediate the ESX Host

$RemediateTask = Remediate-Inventory -Entity $EsxHost -Baseline $CriticalHost, $NonCriticalHost -HostFailureAction $vumConfig.HostFailureAction -Confirm:$false

Wait-Task -Task $RemediateTask

# Detach Baseline

Detach-Baseline -Baseline $CriticalHost, $NonCriticalHost -Entity $EsxHost

# Exit Mantenance mode

Set-VMHost $EsxHost -State Connected

# Disconnect from vCenter

Disconnect-VIServer -Confirm:$False