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VirtualBox On FC6 / CentOS 4 / OpenSuSE 10.2
InnoTek VirtualBox is a family of powerful x86 virtualization products for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU Public License (GPL).
Install and Configure Auth Shadow on Debian/Ubuntu
Auth Shadow or mod-auth-shadow is a module for apache (and apache2, sort of) that enables authentication against /etc/shadow. The benefits being that any system user with a password can be authenticated for web_dav, subversion or simply an https server. The only other way to do this is with PAM. That method is dangerous because the apache user (www-data in my case) must be able to read /etc/shadow. Obviously, not a good idea. Auth Shadow accomplishes this safely by using a intermediate program called validate. This works because validate can be owned by root but executable by everyone. In the event that your server is compromised through apache, your password file will not be readable.
Resolving Domains Internally And Externally With Bind9 And Caching Nameserver
Some times, we are required to resolve our internal domains on a local nameserver and external (internet) domains on our ISP's nameserver. There are different solutions to this problem, but in this howto, we are going to solve it through configuring a combination of caching-nameserver and BIND 9.
Virtual Users With Postfix, PostfixAdmin, Courier, Mailscanner, ClamAV On CentOS
In this how to I will explain how to setup a Postfix virtual mailserver with Courier-IMAP, Maildrop and Postfix Admin GUI. We will secure our mailserver with Mailscanner and Clamav as anti-virus and Spamassassin as anti-spam.
How To Set Up An IRC Server And Anope IRC Services
This tutorial describes how to set up and run an UnrealIRCD server on OpenSuSE 10.2 and Fedora Core 6. It also shows how to install Anope IRC services. Anope is a set of Services for IRC networks that allows users to manage their nicks and channels in a secure and efficient way, and administrators to manage their network with powerful tools.
Installing Multiple OS's Without A Floppy/CD/DVD/Etc.
This article explains how I managed to install over 50 various
operating systems on my computer (one hard drive) without having to burn
the distro ISO to disk to boot from. (No floppy, usb, cd, dvd, etc. needed!) The final result after some fun experimenting, is when I boot, I have a
cool grub boot screen come up with the option to boot into whatever OS
I want, this is handy for multiple reasons.
Custom Monitoring MySQL and SNMP with BixData
With BixData you can monitor your servers as well as VMware and Xen. BixData includes pre-built plugins for things like CPU, Memory, Disk, etc. but any good monitoring tool needs to be customizable. BixData includes the basic ability to run scripts and record their exit values, similar to Nagios Plugins. BixData 2.7 adds support for importing data in more complex formats. This allows you to monitor almost anything. I'll go through the steps showing you how to monitor MySQL locally where an agent is installed and then the steps to monitor a device remotely through SNMP. The advantage of BixData is that any data available through a BixAgent works with the standard tools such as the situation room, scoreboards, notifications and the reporting system. All data are stored in standard SQL tables and are easily accessible.
Replacing A Failed Hard Drive In A Software RAID1 Array
This guide shows how to remove a failed hard drive from a Linux RAID1 array (software RAID), and how to add a new hard disk to the RAID1 array without losing data.
Using A Sandisk MP3 Player On A Linux Desktop
This article shows how to use a Sandisk MP3 player (Sansa E250) on a Linux desktop. Now I can have all the tunes I want without dropping into Windows to manipulate them.
Loops In PHP
There are certain conditions in which you need to execute the same block of code again and again. Here we can use Loops to write few lines which will print more output depending on our loops condition.