Posted by Simon Long Mar 9, 2010
PowerCLI: Reconfiguring NTP Servers on ESX Hosts
Just lately I’ve been creating a lot of PowerCLI scripts to help configure various aspects of out ESX environment. We’ve just implemented a new NTP Server to our network. So I was given the job to update all of our ESX Hosts. I didn’t fancy spending all morning manually changing them, so I set to work in creating a PowerCLI script to do the business. Here is the result.
$Cluster = "<cluster name>"
$Hosts = Get-Cluster $Cluster | Get-VMHost
ForEach ($Host in $Hosts)
{
Remove-VmHostNtpServer -NtpServer "<old ntp server>" -VMHost $Host | Out-Null
Add-VmHostNtpServer -NtpServer "<new ntp server>" -VMHost $Host | Out-Null
Get-VmHostService -VMHost $Host | Where-Object {$_.key -eq "ntpd"} | Restart-VMHostService -Confirm:$false | Out-Null
write "NTP Server was changed on $Host"
}
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