Linux TimeZones Setting

TASK

During the daily standup, it was pointed out that the timezone across Nautilus Application Servers in Stratos Datacenter doesn't match with that of the local datacenter's timezone, which is America/Martinique.

Correct the mismatch.

SOLUTION

App server 1

# ssh into the first server
ssh tony@172.16.238.10

# change the timezone to America/Martinique
sudo timedatectl set-timezone America/Martinique

# confirm timezone
timedatectl

# sample output

      Local time: Sun 2022-10-30 17:56:16 AST
  Universal time: Sun 2022-10-30 21:56:16 UTC
        RTC time: n/a
       Time zone: America/Martinique (AST, -0400)
     NTP enabled: n/a
NTP synchronized: yes
 RTC in local TZ: no
      DST active: n/a

App server 2

# ssh into the second server
ssh steve@172.16.238.11

# confirm current timezone
timedatectl

# sample output

      Local time: Sun 2022-10-30 21:57:58 UTC
  Universal time: Sun 2022-10-30 21:57:58 UTC
        RTC time: n/a
       Time zone: UTC (UTC, +0000)
     NTP enabled: n/a
NTP synchronized: yes
 RTC in local TZ: no
      DST active: n/a


# change the timezone to America/Martinique
sudo timedatectl set-timezone America/Martinique

# confirm timezone
timedatectl

# sample output

      Local time: Sun 2022-10-30 17:56:16 AST
  Universal time: Sun 2022-10-30 21:56:16 UTC
        RTC time: n/a
       Time zone: America/Martinique (AST, -0400)
     NTP enabled: n/a
NTP synchronized: yes
 RTC in local TZ: no
      DST active: n/a

App server 3

# ssh into the third server
ssh banner@172.16.238.12

# change the timezone to America/Martinique
sudo timedatectl set-timezone America/Martinique

# confirm timezone
timedatectl

# sample output

      Local time: Sun 2022-10-30 17:56:16 AST
  Universal time: Sun 2022-10-30 21:56:16 UTC
        RTC time: n/a
       Time zone: America/Martinique (AST, -0400)
     NTP enabled: n/a
NTP synchronized: yes
 RTC in local TZ: no
      DST active: n/a