Updating esx host daylight saving time
Again, it is not necessary to reboot the ESX host after updating /etc/localtime .
Reference the zoneinfo file used in step 2 and compare it to etc/localtime using the diff command: Upon booting, ESX runs /etc/rc.d/init.d , which reads /etc/sysconfig/clock to set the system clock based on the hardware clock's current time and the configured time zone information.
Select your server and click on the Configuration tab 3. Click on Properties on the right side of the screen 5. Add a new NTP server on the NTP Settings tab, for example org 7.
During installation, a time zone was selected for ESX host that does not match the desired time zone.
It turns out we had the Internet Time setting turned on in the Windows VM's (Control Panel Internet Time tab) so the guest was getting time updates from two places and the internet time was winning.
Early examples include the Oracle Exadata Database Machine X2-8, and the first Oracle Exalogic Elastic Cloud, both introduced in late 2010.
The time sync was turned on in VMWare Tools on the guest, but the guest clocks were consistently off (by about 30 seconds) from the host clock.
The ESXi host was configured to get time updates from an internal time server.
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