Common Errors Chef

Your system clock has drifted from the actual time by more than 15 minutes. This can be fixed by syncing your clock with an NTP server. You'll need to rerun chef-client after synching NTP.

https://wiki.opscode.com/display/chef/Common+Errors

http://www.javahotchocolate.com/notes/chef-quick.html

http://www.javahotchocolate.com/notes/ntp.html

https://help.ubuntu.com/10.04/serverguide/NTP.html