Verifying server time synchronization

About this task

If you plan to install the EPM and MPP software on separate servers, ensure that the time is synchronized across the servers. Experience Portal automatically configures the chronyd (Network Time Protocol) software that synchronizes the servers. Ensure the following:

The time synchronization is relatively close before you install or upgrade the Experience Portal software. Otherwise the installation process may not complete successfully.

If there is a difference in the time, the time on all planned MPP servers must lag behind that of the planned EPM server. The NTP software has to set the time on the MPP servers ahead by a small amount instead of trying to adjust the time backward.

	Note:
	Experience Portal only requires that the EPM and MPP servers are synchronized. However, you must also synchronize all servers that Experience Portal connects to, including the application server, any speech servers, and the PBX. For more information, see External time sources.

Procedure

On each Experience Portal server, in the same time frame, run the date command.
Verify that all Experience Portal servers report the time within a few seconds of each server response. If there is a time difference, verify that the planned MPP servers lag behind the planned EPM server.

For example, an MPP server time of 2:10:00 and a EPM server time of 2:10:03 is acceptable.
If one or more servers differ by more than a few seconds, set the appropriate date and time by running the date MMDDhhmmYY.ss command, where MMDDhhmmYY.ss is the two-digit month, day, hour, minute, year, and seconds you want to set based on the 24-hour clock.

For example, to set the date to 2:15:35 p.m. on March 31, 2008, you must enter date 0331141508.35.