3

I am using a local timezone (non-UTC) on my server. Whenever I update the tzdata via yum, the system resets /etc/localtime to the default file and I am back on UTC.

While #date still shows the proper timezone, CRON and other services switch to UTC.

How can I prevent that?

3
  • that's very unlikely because the tzdata rpm package does not own the /etc/localtime file and contains no post-install script fiddling with it. (git.centos.org/blob/!!rpms!tzdata.git/…)
    – guido
    Apr 23, 2015 at 5:37
  • 4
    @guido But, try $ rpm -q --triggeredby tzdata, and you'll see the glibc-common package has a script triggered by tzdata update. Specifically, it runs /usr/sbin/tzdata-update. (This is on CentOS 6 and earlier; things are different with systemd.)
    – mattdm
    Apr 23, 2015 at 19:20
  • What is the output of ls -l /etc/localtime and cat /etc/sysconfic/clock? Apr 24, 2015 at 5:08

2 Answers 2

3

My CentOS knowledge is a bit out of date, but you may need to also specify the timezone in /etc/sysconfig/clock.

As a last-ditch effort, of course, you could:

chatter +i /etc/localtime

It is surprising that tzdata munges /etc/localtime though. Have you made it a symlink to /usr/share/zoneinfo/...? Are you perhaps updating glibc at the same time as tzdata? (since the glibc package owns /etc/localtime)

1
  • I use sudo ln -s /usr/share/zoneinfo/Europe/Amsterdam /etc/localtime to update the time. After a tzdata update, the time is reset to UTC. After changing the clock to Europe/Amsterdam, this doesn't happen anymore. Maybe this is not the correct way to set localtime, but your answer seems to fix my problem.
    – SPRBRN
    Sep 3, 2015 at 8:50
0

I know Im late ;-) All RH based system before version 7 the correct way was to set in /etc/sysconfig/clock

and then run tzdata-update tzdata rpm runs this so that's why it resets it one version 7 we have timedatectl....

1
  • There is no time limit, you can post new answers any time. But they should be good quality and significantly different as the already existing ones.
    – peterh
    Sep 27, 2017 at 20:12

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.