You’ll see the first menu option for ‘Delete all existing DNS Servers values’ is not working. #Connect-VIServer -Server .10 -User root -Password vmware $esx Hosts = get-VMHost Function Clear-DNS Function Clear-NTP Function Clear-NTPDNS Function Manual-Time Function Set-DNS Function Set-NTP Function Set-NTPDNS # Menu to select functions function Load Menu System() Load Menu System If ($x Exit Session) Else Husband & Father.
Power CLI can’t write null values with the Set-VMHost Network -DNSAddress command, and the Update Dns Config method in VMware. Host Dns Config was not behaving for me (probably because my Power CLIfu is weak). Volunteer Firefighter / Emergency Medical Responder.
Without slew mode, this time difference will be stepped within 15 minutes.
From the man page: So with -x, if the time is off by up to 600s, ntpd will gradually adjust it, rather than step it. Without -x, ntpd will step the time if the offset is greater than 128ms.
See this Tech Net article for tips on how to configure an Active Directory forest for reliable time synchronization.
Next I would choose the NTP synchronization option, followed by VMware tools sync, and never the no time synchronization.
Before we get too carried away, let’s first make sure our v Center server has the correct time.
If you installed your v Center Server on a Windows host, it should get it’s time from your Active Directory.
Caution: this option defeats the algorithms designed to cast out falsetickers and can allow these sources to set the system clock.In both cases (with and without -x), ntpd will only step the time after the step threshold has been exceeded (default 900s).To force ntp to step sooner, you can set the stepout option."With two, it is impossible to tell which one is better, because you don't have any other references to compare them with.This was causing hundreds of internal customer tickets to be generated.Here is the initial ntpq output: Of these items, the most likely cause of the problem was slew mode.On the v Center Server tab, click either the ‘Time’ menu button or the ‘Configure Time’ link. v Center Virtual Appliance NTP Settings " data-medium-file=" data-large-file=" class="aligncenter size-full wp-image-5835" alt="v Center Virtual Appliance NTP Settings" src=" width="640" height="458" srcset=" sizes="(max-width: 640px) 100vw, 640px" / I prefer Active Directory if one is available and correctly configured to pull time from a trusted higher stratum server. This Tech Target tip ( does a good job explaining the basics of ESXi time synchronization, including how to manually set time and NTP on ESXi hosts.Manually setting time, NTP, and DNS forwarding servers (if you’re using hostnames for NTP instead of IP addresses) on a bunch of hosts is a waste of time – let’s automate!Once the VCVA has accurate time, we can focus on the ESXi hosts. As I mentioned above, this can be done manually in either the v Sphere Client (the legacy C# client) or the v Sphere Web Client.