NTP Conflagration with Power CLI

Check NTP Services status 

Get-VMHost | Get-VmHostService | Where-Object {$_.key -eq “ntpd”}

Check Firewall exception configuration 

Get-VMHost | Get-VMHostFirewallException | where {$_.Name -eq “NTP client”}

Enable the FirewallException to all ESXi Hosts

Get-VMHost | Get-VMHostFirewallException | where {$_.Name -eq “NTP client”} |Set-VMHostFirewallException -Enabled:$true

Disable the FirewallException to all ESXi Hosts

Get-VMHost | Get-VMHostFirewallException | where {$_.Name -eq “NTP client”} |Set-VMHostFirewallException -Enabled:$false

Start the NTP service on all ESXi nodes

Get-VMHost | Get-VmHostService | Where-Object {$_.key -eq “ntpd”} | Start-VMHostService

Stop the NTP service on all ESXi nodes

Get-VMHost | Get-VmHostService | Where-Object {$_.key -eq “ntpd”} | Stop-VMHostService   ( use  ” -Confirm:$false to avaoid the the popoup quetion abut confimration )

Add the NTP servers to all ESXI Hosts

Get-VMHost | Add-VMHostNtpServer 192.168.1.1o,192.168.1.11

Verify NTP servers added  by running below command

Get-vmhost esx1.test.com |Get-VMHostNtpServer

Remove the NTP servers from ESXi Hots 

Get-vmhost esx1.test.com |Remove-VMHostNtpServer 192.168.1.10,192,168,1,11  -confirm:$false

Check the NTP Policy Configured 

Get-VMhost | Get-VmHostService | Where-Object {$_.key -eq “ntpd”}

Configure the  NTP Policy 

Get-VMhost | Get-VmHostService | Where-Object {$_.key -eq “ntpd”} | Set-VMHostService -policy “automatic”

Note:– Get-VMhost “ESXIHOSTNAME” , if you use this you can apply these setting only to that HOST