将本地Debian时间与amazon Debian实例（RDS）MDT同步到UTC [英] synchronize local Debian time with amazon Debian instances (RDS) MDT to UTC

问题描述

它在我的亚马逊Debian实例上尝试此命令

  root @ ip-：〜＃date 
 Sun Apr 27 11:26:34 UTC 2014 
  

在我本地的debain实例中，它像这样

  root @ debian：〜＃date 
 Sun Apr 27 16:56:56 MDT 2014 
  

所以现在我如何让我的本地debain机器时间与亚马逊实例时间一样

ie

转换

  Sun Apr 27 16:56 ：56 MDT 2014  - >（to）Sun Apr 27 11:26:34 UTC 2014这个
  

在我当地的debain machinee

解决方案

有两个问题涉及到时差：

1. 时区 - 您的本地Debian系统随当地时区一起运行，而EC2实例正在运行，协调世界时（UTC）。后者几乎是规范，服务器的最佳做法，您可以通过 sudo dpkg-reconfigure tzdata 调整您的本地系统（请参阅Ynhockey的答案如何在Debian中永久重置时区？）。


2. 精准度 - 您的一个或两个系统展示对UTC有显着的时钟偏差（两次都应该相同地减去时区偏移量）。通过将网络时间协议（NTP）后台驻留程序安装到自动设置时间，如Debian的 DateTime ，它归结为 sudo apt-get install ntp 并编辑 /etc/ntp.conf 以更好地定位本地NTP服务器源，以获得最佳效果。

it tried this command on my amazon Debian instances

    root@ip-:~# date
    Sun Apr 27 11:26:34 UTC 2014

and in my local debain instances its like this

  root@debian:~# date
  Sun Apr 27 16:56:56 MDT 2014

so now how can i make my local debain machine time as same as the amazon instance time

i.e

convert

   Sun Apr 27 16:56:56 MDT 2014 ->(to) Sun Apr 27 11:26:34 UTC 2014 this

in my local debain machinee

解决方案

There are two issues concerning the time difference at hand:

1. Timezone - your local Debian system is running with your local timezone, whereas the EC2 instance is running with Coordinated Universal Time (UTC). The latter is pretty much the norm and resp. best practice for servers, you can adjust your local system via sudo dpkg-reconfigure tzdata (see Ynhockey's answer to How do I permanently reset the time zone in Debian?).
2. Precision - either one or both of your systems exhibit significant clock skew against UTC (both times should be identically after subtracting the timezone offset). This is easily remedied by installing a Network Time Protocol (NTP) daemon to Set the time automatically as explained in Debian's DateTime, which boils down to sudo apt-get install ntp and editing /etc/ntp.conf to target more local NTP server sources for optimal results.

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