NTP-Active Directory synchronization

[MustafaSadek]

hello all,

I have joined my vcenter to domain , and right now i want to synch vcenter 6.5 with active directory clock time, but i don't see that option

Active Directory synchronization  as mentioned in the following url: How to Synchronize the vCenter Server Appliance Clock with an NTP Server. | Dell US

so from where i can see this option . Thank you

[amohammadimir]

The shared link is related to VMware vSphere 5.5 environment. but yours is 6.5 which has 3 options : Disabled, Host and NTP.

Configure the System Time Zone and Time Synchronization Settings

You can configure your domain controller to become as an NTP server and then define it in VCSA.

[nachogonzalez]

Hey, hope you are doing fine

If your vCenter is windows based NTP settings are inherited from OS.

If you are using a VCSA (linux based) you can do the following po9inting the Active directory domain controller as NTP servers
Add or Replace NTP Servers in the vCenter Server Appliance Configuration

https://techbrainblog.com/2015/10/09/how-to-configure-the-ntp-on-the-vcenter-server-appliance-6-0-vcsa/

Hope that works

Warm regards

[MustafaSadek]

Thanks much , i configured ntp on windows server and added it to vcsa and 2 hosts and it worked fine

but  i notice that there's a difference like 3 min between host one and host two , i stop and start NTP service on both hosts but still there is difference in minutes even i added the same ntp server on both.

so is this normal ?

[nachogonzalez]

can you please share a screenshot of the NTP configurtation on both hosts?
are all on the same network?

[MustafaSadek]

yes sir,

They all on same vlan and same network gateway

check the screen shot for ntp configuration on two hosts ,

host : sa-01

host sa-02

[nachogonzalez]

Please check this out

VMware Knowledge Base