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Vmware ntp not updating

Luckily, setting up network time synchronization with the v Sphere Client is pretty easy.

To configure NTP synchronization, select the host, and on the Configuration tab, select Time Configuration under Software.

Using NTP is relatively easy too, the hardest part will be making sure you have the correct ports open on all parts of the network. So firstly you want to select Use Network Time Protocol.

Microsoft is conducting an online survey to understand your opinion of the Technet Web site.Understanding how the underlying technology of how NTP works is actually quite interesting but beyond what this post is about. Each region around the world has a number of NTP pools and within those regions many countries have pools of their own.For me my closest pool is Australia within the Oceania region. Within these pools are actually a number of servers. But how do you test that these settings are correct, considering that the time sync process is not instant.Now, you need to choose NTP servers that your VMware ESXi hosts should synchronize with.Click NTP Settings and you’ll see the current list of NTP servers. Click Add to add the name or address of the NTP server you'd like to use.Reboot the server, then go to Options to make sure NTP has been enabled.This gives you access to the NTP Startup Policy, where you should select “Start and stop with host.” You’re not done with network time synchronization yet, though.Log into the console of the ESXi host using whatever method you prefer. VMware have a good KB article which explains what it all means if your really want to know.The simplest is usually just starting and connecting to SSH. If we see something similar we know we’re good and the time should start to change shortly.You'll now see the existing time synchronization status on that host. This selection shows the Time Configuration screen, where you can see the current time on the host.Make sure it’s not too different from the actual time, because a host that’s more than 1,000 seconds is considered “insane” and won't synchronize.


  1. Run as root user, should show if it's active or not. rc Su SEfirewall2 status -- Cheers Malcolm °¿° LFCS, SUSE Knowledge Partner Linux Counter #276890 SUSE.

  2. NTPD not updating time date on CENTOS. any way i can check why ntpd is not pulling the time. NTP needs more than one server to compare against.

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