Comments on: Revisiting EC2 Instance IDs

By: Viktors Rotanovs

Viktors Rotanovs — Thu, 22 Sep 2011 20:30:29 +0000

There’s a simpler command to get domid:

xenstore-read domid

By: Mehr Amazon EC2 Interna | Server in den Wolken

Mehr Amazon EC2 Interna | Server in den Wolken — Tue, 27 Apr 2010 20:30:48 +0000

[...] Revisiting EC2 Instance IDs [...]

By: Eric Windisch

Eric Windisch — Thu, 04 Feb 2010 21:55:31 +0000

Several months ago, I wrote something nearly identical in bash. I’ll share it with you so that you can skip the Ruby requirement of the one provided above… Note that mine confirms the UUID as it would be possible to have permission to multiple trees in the xen-store. You likely wouldn’t see that on a public cloud, but it might be done on private deployments…

http://gist.github.com/292068

By: Guy Rosen

Guy Rosen — Thu, 04 Feb 2010 21:45:09 +0000

Thorsten – perfect! Those are pretty close to the 500000000 and 750000000 mark (give or take a few hundred thousand), so it lines up pretty well with what the AMIs teach us.

By: Revisiting EC2 Instance IDs | uncompiled.com

Revisiting EC2 Instance IDs | uncompiled.com — Thu, 04 Feb 2010 20:04:51 +0000

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By: Thorsten, CTO RightScale

Thorsten, CTO RightScale — Thu, 04 Feb 2010 15:54:32 +0000

We didn’t support EU or US-WEST on the day of release, so the earliest IDs we have are a few days later. I need to do some digging but in EU one of the earliest we see is i-3edded4a and in us-west i-bb8ea3fe (sorry, I don’t have the conversion calculator handy). I’m sure others can come up with earlier instance IDs…

By: Guy Rosen

Guy Rosen — Thu, 04 Feb 2010 09:05:20 +0000

Even easier – we can estimate the starting point from the AMI IDs. Based on this, underlying eu-west-1 IDs start at 500000000 (decimal) and us-west-1 IDs at 750000000.

That yields a total of 3,415,862 instances started all-time on eu-west-1 and 1,277,975 instances started all-time at us-west-1.

By: Guy Rosen

Guy Rosen — Thu, 04 Feb 2010 08:51:02 +0000

@Thorsten – indeed! Are you able to report the earliest instance IDs you saw in the other regions? I suspect we’ll find that the base is a nice round number.

Initially I ventured that they may start at 0×10000000 and 0×20000000, but those bases yielded too many instances started.

By: Thorsten, CTO RightScale

Thorsten, CTO RightScale — Thu, 04 Feb 2010 05:52:02 +0000

Very cool, thanks for the update. We had noticed that reported instance launch counts in west and eu did not match our observations at all. Do we now need to do a “hunt” for the lowest instance id in those regions?

By: On Amazon EC2’s Underlying Architecture « すでにそこにある雲

On Amazon EC2’s Underlying Architecture « すでにそこにある雲 — Thu, 04 Feb 2010 03:13:31 +0000

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