HowTo: Authenticate Linux Clients with Microsoft Active Directory

Posted on in Categories Linux, Linux desktop, RedHat/Fedora Linux, Sys admin, Tips, Troubleshooting, Windows, Windows server last updated November 18, 2008

Every IT shop has a mix of Windows and Linux system. Sometime you need to authenticate your Linux desktop system against Microsoft Active Directory service. You can save time, effort and IT infrastructure by sharing authentication server. This article explains how to setup the Linux desktop computers with Active Directory using Samba and winbind.

Nagios: System and Network Monitoring Book

Posted on in Categories Book Review, Linux, Monitoring, RedHat/Fedora Linux, Suse Linux, Sys admin, Troubleshooting, Ubuntu Linux, UNIX, Windows server last updated October 18, 2008

The convenience and reliability that monitoring programs offer system administrators is astounding. Whether at home, commuting, or on vacation, admins can continuously monitor their networks, learning of issues long before they become catastrophes.

Nagios, the most popular open source solution for system and network monitoring, is extremely robust, but it’s also intensely complex.

Troubleshooting Lighttpd Chrooted RedHat PHP Version 5.1.6-20.el5_2.1

Posted on in Categories CentOS, GNU/Open source, kernel, lighttpd, Linux, Linux distribution, php, RedHat/Fedora Linux, Troubleshooting last updated October 1, 2008

It appears that latest php version 5.1.6-20.el5_2.1 under RHEL / CentOS Linux v5.2 has made some major changes. As a result choort jail setup using previous instructions no longer works. PHP is crashing with segmentation fault errors. So I had to trace php errors using strace command.

Why Does The Segmentation Fault Occur on Linux / UNIX Systems?

Posted on in Categories C Programming, CentOS, Debian Linux, fedora linux, GNU/Open source, Hardware, Linux, Linux distribution, RedHat/Fedora Linux, Sys admin, Troubleshooting, Ubuntu Linux, UNIX last updated October 5, 2008

An error in which a running program attempts to access memory not allocated to it and core dumps with a segmentation violation error. Here are few tips to track down “Segmentation Fault” error under UNIX / Linux.