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rafik_74599's avatar
rafik_74599
Icon for Nimbostratus rankNimbostratus
May 04, 2011

Turning DST (daylight save time) off

Hi all,

 

 

I have a loadbalnacer working on Redhat Linux OS.

 

 

I tried to turnoff DST (daylight time save) but I didn't know how.

 

 

I wanted to modify /usr/share/zoneinfo/Africa/Tunis file but I couldn't even if I have root rights.

 

 

Any idea please?

 

 

basic
getting started
new to f5
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    May 04, 2011
    Hi Rafik,

     

     

    Tunis shouldn't be using DST by default. If you check the zoneinfo for this timezone, DST (isdst) is set to 0 for the future:

     

     

    zdump -v /usr/share/zoneinfo/Africa/Tunis | tail -3

     

    /usr/share/zoneinfo/Africa/Tunis Sun Oct 26 01:00:00 2008 UTC = Sun Oct 26 02:00:00 2008 CET isdst=0 gmtoff=3600

     

    /usr/share/zoneinfo/Africa/Tunis Mon Jan 18 03:14:07 2038 UTC = Mon Jan 18 04:14:07 2038 CET isdst=0 gmtoff=3600

     

    /usr/share/zoneinfo/Africa/Tunis Tue Jan 19 03:14:07 2038 UTC = Tue Jan 19 04:14:07 2038 CET isdst=0 gmtoff=3600

     

     

    If you want to set the timezone to UTC (which doesn't use DST either), you can check SOL8551:

     

     

    sol8551: F5 time zone update policy

     

    http://support.f5.com/kb/en-us/solutions/public/8000/500/sol8551.html

     

     

    Aaron
  • rafik_74599's avatar
    rafik_74599
    Icon for Nimbostratus rankNimbostratus
    May 04, 2011
    Hi Aaron,

     

     

    The output of date commande is Fri Apr 29 17:57:56 CEST 2011

     

     

    timezone is set to /Africa/Tunis.

     

     

    As checked this file /Africa/Tunis, I found CET-1,CEST...

     

     

    I wanted to modify (by copying for example the content of /CET time or /Africa/Algiers) this file but it was impossible even with root rights,

     

     

    So it seems that I must set time zone to UTC.

     

     

    thanks