Monthly Archive: September 2012

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Setting up thunderbird (15.01) on Linux with Exchange server 2010 emails, contacts and calendar

Update, New guide for thunderbird 16 is here: http://adhocshare.blogspot.com/2012/10/setting-up-thunderbird-16-on-linux-with.html Now you could setup Thunderbird 15.01 with emails, contacts and calendar Lets see what we need and from where to get them Thunderbird 15.01 Lightning 1.7 from Thunderbird add-ons section Exchange 2007/2010 Calendar and Tasks...

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Hosting multiple websites on Apache2

Source: http://wiki.gandi.net/en/hosting/using-linux/tutorials/ubuntu/virtualhosts   So you have just installed an Apache2 HTTP server on your Ubuntu 7.10 Gandi server and now you want to start hosting websites for your friends or customers. When it is freshly installed, Apache will show the same web page to...

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Design a Beautiful Website From Scratch

Source: http://net.tutsplus.com/tutorials/html-css-techniques/design-a-beautiful-website-from-scratch/   Have you ever wanted to design a beautiful website but just didn’t know how? To be honest, a few years ago, that happened to me too. While browsing the web, I saw so many nice looking websites and...

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hadoop – Incompatible namespaceIDs in hadoop/dfs/data

Are you seeing this ? org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Incompatible namespaceIDs in hadoop/dfs/data: namenode namespaceID = X; datanode namespaceID = Y The fix (in the order) Delete VERSION files in the dfs directory $ find /hadoop/dfs -name VERSION -exec rm -rf “{}”...

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Hadoop Default Ports Quick Reference

Is it 50030 or 50300 for that JobTracker UI? I can never remember! Hadoop’s daemons expose a handful of ports over TCP. Some of these ports are used by Hadoop’s daemons to communicate amongst themselves (to schedule jobs, replicate blocks,...

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Understanding Hadoop Clusters and the Network

Source: http://bradhedlund.com/2011/09/10/understanding-hadoop-clusters-and-the-network/   This article is Part 1 in series that will take a closer look at the architecture and methods of a Hadoop cluster, and how it relates to the network and server infrastructure.  The content presented here is largely...

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Wine – Creating 32bit WINEPREFIX

From default wine installation I was on 64 bit wine. Due to some requirement had to switch over to 32bit wine arch. Following is what I did as the current user – rm -rf ~/.wine WINEARCH=win32 winecfg      ...

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Cannot start mysqld (Fatal error: Can’t open and lock privilege tables: Incorrect file format ‘host’ )

Are you seeing – Fatal error: Can’t open and lock privilege tables: Incorrect file format ‘host’ ?  Following is what I did – removed mysql-server (#yum remove mysql-*) re-installed mysql-server (#yum install mysql-server) #cd /var/lib/mysql/mysql #rm -rf * #mysql_install_db and then,  ...