Problem With NTP Devices

[BlackRoze]

Hi

I have one NTP Device (SyncServer S100)

i selected in Time configuration in Host this NTP Device .then is restarted

after i connected to Host with SSH and run this command /etc/init.d/ntpd restart

when Use Date Command the Time sync but

One hour difference between host and NTP

or some times sync with microsoft AD Although the my AD server is not set for NTP Server

what should i do ?

[King_Robert]

if the ESX host is set to synch with NTP server then you can select the each and every VMs to synch the times with ESX hosts only.

there is no additional settings required to do in AD VMs to synch time with NTP.

[dhanarajramesh]

Make sure the NTP service option set as shown in picture. if you set first option, it will affect the NTP sync some times. and also please check the firewall port UDP/123 bidirectionally opened between ESXI to NTP

[BlackRoze]

NTP Device Sync with All the Switch and Routers

and the Hosts and NTP in one Vlan !

host 10.10.1.181

NTP : 10.10.1.59

every thing is ok because i test with ntpq command send the packet

but the Time is sync with Minutes but One hour difference 

Example : Host is 10:19pm  but NTP is 11:19

what should i do ?

[Borja_Mari]

Hello,

it seems is ok, don't worry

The esxi hosts always have the time in UTC.

Maybe your local time (time zone) is UTC + 1 ?

Anyway, check this to troubleshooting ntp issues:

VMware KB: Troubleshooting NTP on ESX and ESXi 4.x / 5.x

Best regards,

Pablo

[BlackRoze]

I know ESXi dont have any Time zone

my UTC is +3:30

the ESXi is connected to NTP but The Time of host when plus 3:30 is 1 ours different

Example :  the time is 15:30        ESXi must be 12:00 but the show time in Date command in Host in 11:00

one hours in back

[BlackRoze]

can i change UTC time in ESXi

example : ESXi time is 12 : 00 and change to 1: 00

[Borja_Mari]

Hello,

you can change the host's time, check this:

VMware KB: Verifying time synchronization across an ESX/ESXi host environment

Best regards,

Pablo

[BlackRoze]

Pablo wrote:

Hello,
you can change the host's time, check this:
VMware KB: Verifying time synchronization across an ESX/ESXi host environment 


Best regards,
Pablo

tnx

i test this

# esxcli system time set -d 31 -M 1 -y 2012 -H 18 -m 0 -s 0

but after several minutes back to normal time

example : current time is 12:30 after run the command had 13:30  but several minuets back to 12:30

[jlanders]

Have you enabled Active Directory services on this ESXi host?

If so, you should check the time on your Windows AD server and verify that it is correct.

If you have control over the AD server, you should configure the AD server to synchronize with your SyncServer S100 as well.

[BlackRoze]

Hi

i Check it but dont have connect  to AD

the Time is not sync and the the Time one ours the different  ( - 1 clock )

[BlackRoze]

what should i do ?

[jlanders]

You may wish to file a support request so we can investigate your configuration.