Centos7时间设置

Centos 7 时间设置 timedatectl

1. date命令查看时间及时区

2. timedatectl [status]命令查看时区及时间

    Local time: Tue 2017-12-12 09:11:18 EST
     Universal time: Tue 2017-12-12 14:11:18 UTC
           RTC time: Tue 2017-12-12 14:11:19
          Time zone: America/New_York (EST, -0500)
        NTP enabled: n/a
   NTP synchronized: no
    RTC in local TZ: no
         DST active: no
    Last DST change: DST ended at
                     Sun 2017-11-05 01:59:59 EDT
                     Sun 2017-11-05 01:00:00 EST
    Next DST change: DST begins (the clock jumps one hour forward) at
                     Sun 2018-03-11 01:59:59 EST
                     Sun 2018-03-11 03:00:00 EDT

3. 更改时区 timedatectl set-timezone Asia/Shanghai

4. 设置硬件时间 timedatectl set-local-rtc 1
5. 启用时间同步 timedatectl set-ntp yes
   我这报错了，是ntp未安装，直接yum -y install ntp，再试即可。

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timedatectl效果如下：

      Local time: Tue 2017-12-12 22:25:19 CST
  Universal time: Tue 2017-12-12 14:25:19 UTC
        RTC time: Tue 2017-12-12 22:25:18
       Time zone: Asia/Shanghai (CST, +0800)
     NTP enabled: yes
NTP synchronized: yes
 RTC in local TZ: yes
      DST active: n/a

date效果如下：

Tue Dec 12 22:26:58 CST 2017