On Wed, Mar 07, 2007 at 09:59:02AM -0800, Florin Andrei wrote: > Karl R. Balsmeier wrote: > > > >Any action required? > > Perhaps a naive question, but anyway: > > Let's assume I'm running CentOS4 or RHEL4 and I updated it to > tzdata-2007c. Before that, it was using an old tzdata package that did > not have the US DST '07 patches. > > Do I have to restart any service? ntpd? Yes. Any process started before you update /etc/localtime (and ensure that got updated correctly; it may not have been) may need to be restarted if it uses zoneinfo information. Two obvious ones are syslog and cron. The safest solution is to reboot. One way to check that localtime is correct (using /bin/sh or similar) . /etc/sysconfig/clock cmp /usr/share/zoneinfo/$ZONE /etc/localtime If it reports differences the cp /usr/share/zoneinfo/$ZONE /etc/localtime and then reboot. See also http://kbase.redhat.com/faq/FAQ_79_9950.shtm Once updated, a restart of all the applications relying on /etc/localtime is required. The easiest solution would be to reboot the machine in order to ensure that all the applications are properly updated. -- rgds Stephen