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I see that Regions could be selected, e.g., us-east-1, but how could the Availability Zone be selected? If it's a lottery, how could it be checked? Is the AZ fixed over the lifetime of the gear?

Thanks

Kar
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2 Answers2

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I see that Regions could be selected, e.g., us-east-1, but how could the Availability Zone be selected?

AZ is set when you launch an instance.

Is the AZ fixed over the lifetime of the gear?

Yes.

EEAA
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  • Isn't the Region set when an instance is launched, e.g., `us-east-1` rather than `us-east-1b`? And calling `https://[IP]/latest/meta-data/placement/availability-zone/` doesn't return the AZ as an EC2 should. – Kar Mar 11 '15 at 20:39
  • Are you launching instances via the command-line tools? – EEAA Mar 11 '15 at 20:41
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While the AZ is fixed over the lifetime of the gear, it is quasi-unique. Those AZs are randomized on a per account basis so your us-east-1b might be my us-east-1d for example. It is arbitrary and not worth worrying about.

Publiccert
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