We're looking at running a Sun Grid Engine HPC cluster on Amazon Elastic Compute Cloud. Unfortunately I couldn't find a CentOS 5 / SGE Amazon Machine Image, so I have been looking at RightScale's public AMIs.

Monday at 3:02pm (EST), I booted a RightScale AMI. Apparently I forgot to shut it down, which entails a small charge from Amazon, but their pricing is low enough that's not a big deal. The oddity, however, showed up the next morning.

Subject: New instance operational: 'i-7e1c0716'
Date: Tue, 9 Feb 2010 09:12:57 +0000
From: notifier@my.rightscale.com
To: pepper@***

Your instance i-7e1c0716 created at 2010-02-09 09:12:57 is now available. This image booted in less than a minute.

It can be reached at ec2-72-44-61-196.compute-1.amazonaws.com or it can be managed in RightScale by logging in and going to:
https://my.rightscale.com/clouds/1/ec2_instances/*******

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I wondered if someone had subverted my RightScale or AWS account, but it looks like RightScale just didn't notice the instance was running until 4:12am (EST) the next day -- a bit over 9 hours after it actually booted. I haven't used RightScale enough to know if this is typical, but it's certainly odd.

pepper@teriyaki:~$ ec2-describe-instances 
[Deprecated] Xalan: org.apache.xml.res.XMLErrorResources_en_US
RESERVATION r-6e452e06  290259848388    default
INSTANCE    i-7e1c0716  ami-f8b35e91    ec2-72-44-61-196.compute-1.amazonaws.com    domU-12-31-39-0B-28-A7.compute-1.internal   running *** 0       m1.small    2010-02-08T20:00:54+0000    us-east-1a  aki-a71cf9ce    ari-a51cf9cc        monitoring-disabled 72.44.61.196    10.214.47.85            instance-store      
pepper@teriyaki:~/Sites$ ssh ec2-72-44-61-196.compute-1.amazonaws.com
Last login: Mon Feb  8 15:02:30 2010 from 140.163.***.***
     ___   _        __   __   ____            __    
    / _ \ (_)___ _ / /  / /_ / __/____ ___ _ / /___ 
   / , _// // _ `// _ \/ __/_\ \ / __// _ `// // -_)
  /_/|_|/_/ \_, //_//_/\__//___/ \__/ \_,_//_/ \__/ 
           /___/                                                 

Welcome to a public Amazon EC2 image brought to you by RightScale!

********************************************************************
********************************************************************
***       Your EC2 Instance is now operational.                  ***
***       All of the configuration has completed.                ***
***       Please check /var/log/install for details.             ***
********************************************************************
********************************************************************
[root@domU-12-31-39-0B-28-A7 ~]# w
 10:13:47 up 1 day, 19:11,  1 user,  load average: 0.00, 0.00, 0.00
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
root     pts/0    140.163.***.***  10:13    0.00s  0.00s  0.00s w
[root@domU-12-31-39-0B-28-A7 ~]# date
Wed Feb 10 10:14:01 EST 2010
[root@domU-12-31-39-0B-28-A7 ~]# last
root     pts/0        140.163.***.***  Wed Feb 10 10:13   still logged in   
root     pts/0        140.163.***.***  Mon Feb  8 15:02 - 17:53  (02:50)    
reboot   system boot  2.6.21.7-2.fc8xe Mon Feb  8 15:02         (1+19:14)   

wtmp begins Mon Feb  8 15:02:22 2010
[root@domU-12-31-39-0B-28-A7 ~]#