Introduction Postgresql is an open source object relational database. It is often thought of as an alternative to MySQL. In this post I’ll provide the steps required to install Postgresql on a developer laptop, assuming that work will be done in both SQL and Python. You can learn more at: Postgresql web site Postgresql on …
Introduction Starting and stopping services is a common part of Hadoop administration. Hadoop Region Server Start a Region Server sudo service hbase-regionserver start Stop a Region Server sudo service hbase-regionserver stop Check the Status of a Region Server sudo service hbase-regionserver status
Introduction sed is short for Stream EDitor, which is a utility that allow you to parse and transform text one line at a time. sed is a useful tool, along with grep and awk, when manipulating text files. It is also often overlooked when working with Hadoop, although the use of sed, awk and grep …
Introduction I had installed JDK 6.0 update 31 in an earlier post. However, I now need to write a Java application that requires the features available in JDK 7. In this post, I will install JDK 7 update 5 as a secondary JDK, while JDK 6.0 u31 will be the primary JDK. It’s perfectly normal …
Introduction The first question is why are we installing an old JDK. The answer is that Oracle JDK 6.0 update 31 is the JDK recommended by Cloudera when installing CDH4 (Cloudera Distribution Hadoop v4). This is an update to an older version of this post. Mainly I have changed the JDK from 1.6.0_26 to 1.6.0_31 …
Introduction Pentaho Design Studio (PDS) is a BI plugin for Eclipse. I’m going to download the complete package as Pentaho was nice enough to integrate the plugin with Eclipse for us. Download To download the Pentaho Design Studio (PDS) either run the following command, or follow the bulleted steps below. wget http://downloads.sourceforge.net/project/pentaho/Design%20Studio/4.0.0-stable/pds-ce-linux-64-4.0.0-stable.tar.gz Or follow the …
Overview: What is Pentaho? Pentaho is an open source Business Intelligence (BI) Suite that comes in with either commercial support (http://www.pentaho.com/) and or community support (http://community.pentaho.com/). This post provides instructions for the Pentaho community edition suite. Create a pentaho user and group Open a terminal and run the following commands: sudo addgroup pentaho sudo adduser …
Changing the default port of ssh is not a huge improvement in security, but I’ve found it to be a useful tool in keeping log files free from failed login attempts with username root on port 22 (and I hope you do spend the time to review your log files!). A large number of scripts …
The first thing I did was to create a wwwuser that I plan to run pyramid under. As a result, I am intentionally installing Python 2.7.2 under only 1 user account, and am leaving the system wide python installation unchanged. useradd wwwuser passwd wwwuser cd /home mkdir wwwuser chown wwwuser:wwwuser wwwuser Copy all of the …
Update April 23, 2012 I added new instructions for adding the MySQL libs to the loader path. Failure to add the libs to the loader path will cause errors when you try to run/build programs that depend on MySQL, such as installing the MySQL driver for Pyramid (Python). Update April 18, 2012 Thanks to Lampros …
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