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Traveling Tech Guy
Asked: 2010-02-06 18:05:01 +0800 CST

Amazon EC2 time zone

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I have an Amazon EC2 dedicated instance (Fedora Linux). Although I took an instance in US West, it came set to EST.
I changed the timezone to PST (export TZ=America/Los_Angeles) and it works - for several hours. Then it resets itself to EST.

What am I doing wrong and how can I set it to PST permanently?

linux amazon-ec2

3 Answers

  1. Best Answer

    I don't run Fedora for my EC2 instances as I need something stable for more than 6 months, so I use CentOS... But it should be the same... Just run the following:

    ln -sf /usr/share/zoneinfo/America/Los_Angeles /etc/localtime

    That should change your systems default timezone to PST and should only be affected when the instance is brought up from scratch.

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  2. Change the ZONE setting in /etc/sysconfig/clock

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  3. Have the config for setting timezone in your .bashrc .

    In case you are looking for using the TZ in your application from the system, its a bad idea since EC2 instances that go down/crash can be a different system when they come back up.

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