AWS Cloud: Use Same Access Key in Different Regions (or in All Regions)

In the Amazon cloud you require an access key to connect to your instances. This key is can be generated when you create your first instance. It’s then downloaded to your client and you specify it when connecting to the instance. Typically you need one key per AWS region.

However, you can use the same key also for different or all regions. You have to connect to a running instance and then copy it from the instance’s authorized_key file under .ssh/and import it as a key pair in the new region as shown in the following video.

Cloud Computing Workshop 2011: Oracle, Rackspace and Amazon

This year I really kept the best until the end! Last week I was running a 2-day cloud computing workshop with a 2-hour hands-on management presentation the night before the workshop for Contribute in Belgium. Contribute is an Oracle Platinum partner and being surrounded by Oracle Fusion Middleware experts, DBAs, application architects and senior level management the technical level of the workshop was very high with many interesting discussions.

We covered Oracle Public Cloud (OPC), Amazon Web Services (AWS) and Rackspace (RS). OPC is not available yet, but the overall functionality including its limitations for the first release is more or less known and quite interesting compared to let’s say running WebLogic on AWS.

To prove the point I was running WebLogic 12c on AWS cloud with 30GB of heap on a high-mem 4xl instance with 8 cores. Proving the point cost me a bit more than US$2.

Typically I expected that the more tech savvy audience prefers AWS over Rackspace, yet this time people were impressed by the easy setup of Rackspace and the way they handled a minor problem with their web console file-upload feature during a live chat session.

Among hundreds of other details we looked at the I/O performance. The performance of Amazon’s EBS is known to be interesting (you may want to read this as ‘difficult’). See Adrian’s posting for a thorough explanation, some benchmarks here, and some more details there.

The out-of-the-box performance looking at Rackspace Cloud is more consistent and there is a surprisingly high throughput which is almost independent of the data size. Here is some data comparing a local laptop disk, to the disks attached to the Rackspace Cloud servers to my brand new consumer SSD (not sure if a 512 GB SSD still qualifies as ‘consumer’). All numbers refer to a READ-benchmark with increasing data size.

Laptop HD (500GB SATA): 80 MB/s

Laptop SSD (Crucial m4): 281 MB/s

Rackspace (SAN): 302 MB/s


I am only posting the screenshot for one of the Rackspace I/O measurements since quality isn’t perfect. There is some older data with graphs available in a previous post of mine.










Now I am still curious about the dip on the left part of the graph which is consistent over several instances and measurements. Any comments?

Oracle Cloud Computing Buch zu gewinnen!

(Posting in GERMAN ONLY)

Während der DOAG2011 Konferenz können Sie ein Examplar des Oracle Cloud Computing Buches gewinnen:

✘✘✘ Unterstützen Sie die Oracle Cloud Computing Buch Seite und klicken Sie auf “gefällt mir”.

✘✘✘ Oder melden Sie sich bei der munz & more Info-Newsletter an. Es erscheinen ca. 4 Ausgaben pro Jahr mit Informationen über Vorträge und Workshops zu Cloud Computing, Oracle WebLogic, Service Bus und SOA Suite.

Die Gewinner werden Ende November benachrichtigt. Der Rechtsweg ist ausgeschlossen. Link zur Amazon-Seite mit Kritiken zu “Middleware and Cloud Computing”.

Artikel: Oracle WebLogic Server und Fusion Middleware in der Cloud

German only. Heute exklusiv auf deutsch ein Artikel den ich für das DOAG Magazin im Früjahr 2011 geschrieben habe:
Download: Oracle Fusion Middleware und WebLogic Server in der Cloud (PDF)

  • Cloud Dienste oder Fusion Middleware Features?
  • Was zeichnet eine echte Cloud aus?
  • Architektur Blueprint für die AWS Cloud und Java EE Anwendungen.

Teile des Artikels sowie zahlreiche Grafiken sind aus meinem “Middleware and Cloud Computing” entommen. Viel Spaß beim Lesen!


large tornado over the road (3D rendring)

Oracle announcing Oracle Public Cloud – First comments.

I am at S.F. at the Oracle Open World conference right now where Larry Ellison announced the Oracle Public Cloud in an entertaining and rather fun presentation just an hour ago. To see some more photos of the event and my paparazzi shot of Sting who already showed up for some 30 seconds: check out the Facebook site of my Oracle Cloud Computing book.

Larry picked up many ideas that I published earlier this year in my cloud computing book:

He was talking a lot about migrating from one cloud to another (mostly using AWS as an example, so they seem to be on the friend list). Also he emphasized that simple multi-tenant SaaS offers such as with a shared DB are not real clouds and risky (because of the shared DB 🙂 ).

When Oracle’s position about clouds was rather fluffy (should I say cloudy?) even one year ago, I now hear them talking more about elasticity, self-service, chargeback etc.

What I didn’t like: So far this does not include pay-per use yet (one of my 4 criteria of cloud computing). Larry mentioned a monthly subscription during his keynote which was confirmed in the Thu morning keynote. Yet Oracle Enterprise Manger 12c is announced to provide metering at various levels.

I will post an update here as soon as there will be more details out tomorrow.

Apart from announcing the Oracle Public Cloud also Oracle Social Media (a part of Fusion Applications) was announced. See fotos on Facebook.