20210719 (월) time zone 변경
[root@compute1 ~]# timedatectl
Local time: Sun 2021-07-18 20:41:06 EDT
Universal time: Mon 2021-07-19 00:41:06 UTC
RTC time: Mon 2021-07-19 00:41:04
Time zone: America/New_York (EDT, -0400)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: no
DST active: yes
Last DST change: DST began at
Sun 2021-03-14 01:59:59 EST
Sun 2021-03-14 03:00:00 EDT
Next DST change: DST ends (the clock jumps one hour backwards) at
Sun 2021-11-07 01:59:59 EDT
Sun 2021-11-07 01:00:00 EST
[root@compute1 ~]# timedatectl list-timezones |grep Seoul
Asia/Seoul
[root@compute1 ~]# timedatectl set-time
set-time set-timezone
[root@compute1 ~]# timedatectl set-timezone Asia/Seoul
[root@compute1 ~]# date
Mon Jul 19 09:41:29 KST 2021
[root@compute1 ~]# timedatectl
Local time: Mon 2021-07-19 09:42:46 KST
Universal time: Mon 2021-07-19 00:42:46 UTC
RTC time: Mon 2021-07-19 00:42:44
Time zone: Asia/Seoul (KST, +0900)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: no
DST active: n/a
ntp패키지는 없는 상태여도 timedatectl 로 변경 가능.