CentOS / Red Hat Enterprise Linux 5.2 Poor NFS Performance and Solution

Posted on in Categories Apache, CentOS, data center, File system, High performance computing, Howto, Linux, Linux distribution, Networking, package management, RedHat/Fedora Linux, Security Alert, Storage, Sys admin, Troubleshooting, Tuning last updated August 22, 2008

A few days ago I noticed that NFS performance between a web server node and NFS server went down by 50%. NFS was optimized and the only thing was updated Red Hat kernel v5.2. I also noticed same trend on CentOS 5.2 64 bit edition.

Linux: Install Urchin 6 Web Analytics Software

Posted on in Categories Apache, CentOS, Howto, Iptables, Linux, Linux distribution, package management, RedHat/Fedora Linux last updated August 19, 2008

Web analytics is the study of online behaviour in order to improve it. There are two categories; off-site and on-site web analytics. Google’s Urchin 6 can be installed under Linux kernel 2.6 or 2.4 for Apache web log analysis. Urchin 6 is just like Google Analytics the most widely used hosted web analytics system. It is targeted at ecommerce web sites or enterprise users behind firewalls. In this mini series you will learn about installing and using web log analysis software called Google Urchin 6 under Red Hat Enterprise Linux 5.x.