Architecting on AWS: utilising elastic compute
Tue, Nov 25th 2014 10:05a Christian Petters Our last post in this series has provided you with an overview of our example architecture on AWS. In this post we are going into some more detail in focusing on elasticity using AWS EC2 (Elastic Compute Cloud), and in particular we will see how to use AutoScaling to make your computing infraastructure elastic and highly available.
But what is that elasticity thing that people keep on going on about? According to Wikipedia elasticity is defined as “the degree to which a system is able to adapt [read] Keywords: policies
Hadoop streaming R on Hortonworks Windows distribution
Tue, May 6th 2014 4:25a Christian Petters The ability to combine executables with the hadoop map/reduce engine is a very powerful concept known as streaming. Thanks to a very active community, we have ample of examples available on the web that caters for a large variety of languages and implementations. Sources like this and this have also provided some R language examples that are very easy to follow.
In my case I was only required to look at the integration between two tools. Unfortunately though, I hadn’t so far be [read] Keywords: application
Using IAM credentials to grant access to AWS services
Sat, Sep 21st 2013 7:42p Christian Petters Having used Amazon Web Services (AWS) for quite some time now, I realised that it should be time to start sharing some of my experiences on this blog, particularly considering that I haven’t contributed to the World Wide Web community for quite some time.
Today’s post is about Amazon’s Identity and Access Management (IAM) service and why it is a good idea to use it.
I am using the great backup solution from CloudBerry to backup important files from my laptop on Amazon S3. Whi [read] Keywords: policies
Fixing crashes in Business Intelligence Development Studio (BIDS)
Mon, Sep 24th 2012 2:59p Christian Petters I recently started to look at SQL Server Analysis Services to get a better understanding of the design and usage of OLAP cubes.
Unfortunately the development environment (Business Intelligence Development Studio) which is still based on Visual Studio 2008 kept on crashing on me for no obvious reasons. Being relatively new to the topic I obviously couldn’t judge whether the crashes where caused by my wrongdoing or something happening in the application itself. To my defence though, I shal [read] Keywords: application
IBM Connections Documentation HTML wrapper
Wed, Apr 18th 2012 2:43a Christian Petters If you are like me and constantly being frustrated about the performance of the IBM Connections wiki you can try those two HTML wrapper documents for a more instant experience:
HTML wrapper accessible
Just note the comment on the top of each document “This draft is refreshed quarterly, as necessary, but does not contain all of the latest updates and fixes made to the community-owned version of the wiki articles.” [read] Keywords: connections
Thu, Mar 29th 2012 8:03p Christian Petters Thanks to everyone who attended my session on Lotus Notes package customisation and the positive feedback I have received so far.
Don’t hesitate to drop me a line if you need to know more details on any of the topics covered.
Feel free to download the presentation from here. Most presentations should also be made available in the AusLUG community after the event. [read] Keywords: lotus
Principal field invalidates RFC 5322 compliance
Sun, Mar 11th 2012 3:22a Christian Petters Due to lack of time, another post in ‘shorthand’:
Outgoing SMTP messages are rejected by ISP or Gateway appliance with error “Invalid sender address”
RFC 5322 requires a from field in the header of every email. Emails that were sent from LotusScript* specifying an invalid entry for the Principal field, which caused Domino to create invalid message headers. The mandatory From field was missing.
When using Principal fields, ensure to use v [read] Keywords: domino
Lotus Traveler: 403 FORBIDDEN
Thu, Feb 2nd 2012 1:42p Christian Petters Just a quick note on an issue we discovered lately.
An Apple iPhone was unable to synchronise with the Traveler server. The only error message we got was 403 FORBIDDEN (Access not allowed even with authorization) in the Domlog.nsf.
Issue tell traveler security status username on the domino console. This will result with a listing of all devices registered to a user and their security status. In this particular case the security approval was pending for the iPhone but the [read] Keywords: domino
Sametime 8.5.x LDAP: Domino vs. Active Directory
Mon, May 16th 2011 3:25a Christian Petters While I was working on the upgrade of our existing Sametime environment to Sametime 8.5.1 (soon 8.5.2) I have run across an interesting question that I considered worth sharing: Will I use Domino LDAP or connect to Active Directory.
There are good and not so good reasons for either option:
To get the discussion started there seems to be the obvious choice to keep on using the Domino Directory when switching to LDAP. This way users can work in their familiar directory structure without the [read] Keywords: domino
DB2 error message on Windows 2008
Mon, Feb 21st 2011 4:22p Christian Petters Just a quick note interesting for DB2 installations on Windows 2008 Server or Windows 7 workstations.
If you are receiving an error “SQL5005C System Error” immediately after the launch of the operating system you have most likely missed to add your current user ID to the DB2Admin group on the local machine.
SQL5005C System Error [read] Keywords: application
Unable to re-install Sametime Gateway
Wed, Sep 29th 2010 5:43p Christian Petters Today I had the need to re-install our Lotus Sametime Gateway to change it around from Standalone to Network Deployment. While the de-installation seemed to be alright, I still wasn’t able to re-install the server, ending up with an error message:
“Unable to locate a Sametime Gateway server at [oldinstalllocation]“
Figuring out what was going on kept me busy for quite a while. I got my final hint from the installlog.txt claiming:
“com.ibm.rtc.gateway.install.CheckVPDRegi [read] Keywords: ibm
Debug code shipped with 8.5.2 gold?
Sun, Aug 29th 2010 10:42p Christian Petters Looks like there is one more issue with the new 8.5.2 release of Lotus Traveler and Update Installer that is going to bug me.
After installing the 8.5.2 Update Installer on my Nokia N97 mobile device there is a little pop-up coming up in the top right corner of the screen whenever I am using the function key on the keyboard (see screen shot below). Removing and reinstalling the app confirmed that it is definitely being the cause.
Now I am obviously wondering whether IBM has missed to remove/dis [read] Keywords: ibm
Traveler problem reports directory has moved in 8.5.2
Tue, Aug 24th 2010 9:44p Christian Petters Just updating our environment to Lotus Domino and Traveler 8.5.2.
The only thing catching my eye so far is the altered directory for traveler problem reports. In the past they were located in a folder named travelerlogstprs in the Domino data directory. This has now changed and the files can be found in the IBM_TECHNICAL_SUPPORTtravelerlogstprs directory.
This is important for organisations that have employed some kind of process to get the problem reports picked up and processed automaticall [read] Keywords: domino