Time Zone kontrolü ve değişikliğinin yapılması

öncelikle sistem üzerinde tanımlı “time zone” kontrolünü yapalım

root@test:# timedatectl status
                      Local time: Fri 2020-10-30 00:14:47 CST
                  Universal time: Thu 2020-10-29 16:14:47 UTC
                        RTC time: Fri 2020-10-30 00:14:48
                       Time zone: Asia/Shanghai (CST, +0800)
       System clock synchronized: yes
systemd-timesyncd.service active: yes
                 RTC in local TZ: yes

Warning: The system is configured to read the RTC time in the local time zone.
         This mode can not be fully supported. It will create various problems
         with time zone changes and daylight saving time adjustments. The RTC
         time is never updated, it relies on external facilities to maintain it.
         If at all possible, use RTC in UTC by calling
         'timedatectl set-local-rtc 0'.

çıktından görüldüğü gibi sunucuz time zone u Asia/Shanghai olarak ayarlanmış görülmektedir. bunu ülkemize uygun olarak değiştireceğiz. öncelikle listede istanbul varmı kontrolü yapalım.

root@test:# timedatectl list-timezones | grep Istanbul
Europe/Istanbul

artık değişikliği yapabiliriz.

root@test:# timedatectl set-timezone Europe/Istanbul

time zone değişikliğini yapmış olduk. duruma ait kontroli tekrarlayalım.

root@test:# timedatectl status
                      Local time: Thu 2020-10-29 19:15:30 +03
                  Universal time: Thu 2020-10-29 16:15:30 UTC
                        RTC time: Thu 2020-10-29 19:15:30
                       Time zone: Europe/Istanbul (+03, +0300)
       System clock synchronized: yes
systemd-timesyncd.service active: yes
                 RTC in local TZ: yes

Warning: The system is configured to read the RTC time in the local time zone.
         This mode can not be fully supported. It will create various problems
         with time zone changes and daylight saving time adjustments. The RTC
         time is never updated, it relies on external facilities to maintain it.
         If at all possible, use RTC in UTC by calling
         'timedatectl set-local-rtc 0'.