HowtoForge - Linux Howtos and Tutorials - CentOS

Installation Of ZendOptimizer And IonCubeLoader Using Lighttpd On CentOS

Thu, 11 Mar 2010 12:25:49 +0100

Installation Of ZendOptimizer And IonCubeLoader Using Lighttpd On CentOS

This tutorial explains how to enable ZendOptimizer and IonCubeLoader in PHP on a Lighttpd web server on CentOS.

How To Harden PHP5 With Suhosin On CentOS 5.4

Wed, 10 Mar 2010 17:12:35 +0100

How To Harden PHP5 With Suhosin On CentOS 5.4

This tutorial shows how to harden PHP5 with Suhosin on a CentOS 5.4 server. From the Suhosin project page: "Suhosin is an advanced protection system for PHP installations that was designed to protect servers and users from known and unknown flaws in PHP applications and the PHP core. Suhosin comes in two independent parts, that can be used separately or in combination. The first part is a small patch against the PHP core, that implements a few low-level protections against bufferoverflows or format string vulnerabilities and the second part is a powerful PHP extension that implements all the other protections."

How To Set Up MySQL Database Replication With SSL Encryption On CentOS 5.4

Tue, 16 Feb 2010 17:13:08 +0100

How To Set Up MySQL Database Replication With SSL Encryption On CentOS 5.4

This tutorial describes how to set up database replication in MySQL using an SSL connection for encryption (to make it impossible for hackers to sniff out passwords and data transferred between the master and slave). MySQL replication allows you to have an exact copy of a database from a master server on another server (slave), and all updates to the database on the master server are immediately replicated to the database on the slave server so that both databases are in sync. This is not a backup policy because an accidentally issued DELETE command will also be carried out on the slave; but replication can help protect against hardware failures though.

Efficient High-Available LoadBalanced Cluster On CentOS 5.3 (Direct Routing Method)

Mon, 15 Feb 2010 17:47:57 +0100

Efficient High-Available LoadBalanced Cluster On CentOS 5.3 (Direct Routing Method)

This article explains how to set up an LVS cluster of load balanced virtual servers with Heartbeat and Ldirectord On CentOS 5.3.The load balancer sits between the user and two (or more) backend Apache/IIS web servers that hold the same content. Not only does the load balancer distribute the requests to the two backend Apache/IIS servers, it also checks the health of the backend servers. If one of them is down, all requests will automatically be redirected to the remaining backend server.

How To Configure ISA Proxy/Auth Setting For Yum

Tue, 02 Feb 2010 11:40:00 +0100

How To Configure ISA Proxy/Auth Setting For Yum

I was running CentOS in my LAN for my personal use and there are MS ISA servers for proxying and each user has to use his/her user name & password for Internet. So when I used my credentials in my web browser I had no problem but when I was going to do yum no success. After some googling I found this solution.

Installing Lighttpd With PHP5 And MySQL Support On CentOS 5.4

Fri, 22 Jan 2010 16:17:47 +0100

Installing Lighttpd With PHP5 And MySQL Support On CentOS 5.4

Lighttpd is a secure, fast, standards-compliant web server designed for speed-critical environments. This tutorial shows how you can install Lighttpd on a CentOS 5.4 server with PHP5 support (through FastCGI) and MySQL support.

Installing Lighttpd With PHP5 And MySQL Support On CentOS 5.3

Thu, 07 Jan 2010 13:12:55 +0100

Installing Lighttpd With PHP5 And MySQL Support On CentOS 5.3

Lighttpd is a secure, fast, standards-compliant web server designed for speed-critical environments. This tutorial shows how you can install Lighttpd on a CentOS 5.3 server with PHP5 support (through FastCGI) and MySQL support.

How To Build A Low Cost SAN

Tue, 22 Dec 2009 11:46:45 +0100

How To Build A Low Cost SAN

In today's world there is a obvious need of information sharing in every department and network storage can help us to achieve this most growing challenge. Here in this article we are focusing our concentration to make a low-cost SAN.

Paravirtualization With Xen On CentOS 5.4 (x86_64)

Sun, 13 Dec 2009 17:44:39 +0100

Paravirtualization With Xen On CentOS 5.4 (x86_64)

This tutorial provides step-by-step instructions on how to install Xen (version 3.0.3) on a CentOS 5.4 (x86_64) system. Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called "virtual machines" or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. This saves money, and what is even more important, it's more secure. If the virtual machine of your DNS server gets hacked, it has no effect on your other virtual machines. Plus, you can move virtual machines from one Xen server to the next one.

Expanding A Root-FS

Fri, 27 Nov 2009 17:20:08 +0100

Expanding A Root-FS

There might be the situation, that your root filesystem runs out of space, so it has to be expanded. With filesystems other than the root filesystem this could easily be done for instance with gparted. With the root filesystem this is not possible, as gparted could only expand filesystems that are not mounted, which is impossible with the root filesystem. The only way to enlarge the root filesystem is to boot from a kind of rescuesystem, Live-CD or the like, and then to expand the root filesystem. The following tutorial describes, how this is achieved by using Systemrescue-CD.

Low Cost SAN

Fri, 20 Nov 2009 17:22:09 +0100

Low Cost SAN

The objective of this document is to provide making of Low Cost SAN using FOSS tools.

CentOS 5.x Samba Domain Controller With LDAP Backend

Fri, 06 Nov 2009 17:18:25 +0100

CentOS 5.x Samba Domain Controller With LDAP Backend

This will show you how to set up a Samba Domain Controller with a local LDAP backend, using CentOS 5.x (tested on 5.3, still successfully running on 5.4). Includes a web-interface for managing LDAP users/groups/etc.

January 2010 -- Now with support for Windows 7 domain logins (see end of guide).

Set Up A Full-Featured Mail Server With iRedOS: MySQL, Postfix, Dovecot, ClamAV, SpamAssassin, RoundCube/SquirrelMail

Wed, 04 Nov 2009 17:11:46 +0100

Set Up A Full-Featured Mail Server With iRedOS: MySQL, Postfix, Dovecot, ClamAV, SpamAssassin, Amavisd, RoundCube/SquirrelMail

iRedMail is a shell script that lets you quickly deploy a full-featured mail solution in less than 2 minutes, since iredmail 0.5 it also supports Debian 5.0.1 (it supports both i386 and x86_64). Its object is to make a Linux mail server installation and configuration simple and easy to use. iRedMail supports both OpenLDAP and MySQL as backends for storing virtual domains and users.This tutorial shows how to use the MySQL backend. iRedOS is a customized CentOS 5.3 distribution, where e unnecessary packages were removed. It ships with the lastest version of iRedMail (iredmail0.50); it lets you install iredmail more quickly and smooth.

The Perfect Server - CentOS 5.4 x86_64 [ISPConfig 3]

Sun, 01 Nov 2009 18:27:46 +0100

The Perfect Server - CentOS 5.4 x86_64 [ISPConfig 3]

This tutorial shows how to prepare a CentOS 5.4 x86_64 server for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: Apache web server, Postfix mail server, MySQL, MyDNS nameserver, PureFTPd, SpamAssassin, ClamAV, and many more.

The Perfect Server - CentOS 5.4 x86_64 [ISPConfig 2]

Tue, 27 Oct 2009 18:20:45 +0100

The Perfect Server - CentOS 5.4 x86_64 [ISPConfig 2]

This tutorial shows how to set up a CentOS 5.4 server (x86_64) that offers all services needed by ISPs and web hosters: Apache web server (SSL-capable), Postfix mail server with SMTP-AUTH and TLS, BIND DNS server, Proftpd FTP server, MySQL server, Dovecot POP3/IMAP, Quota, Firewall, etc. This tutorial is written for the 64-bit version of CentOS 5.4, but should apply to the 32-bit version with very little modifications as well. In the end you should have a system that works reliably, and if you like you can install the free webhosting control panel ISPConfig (i.e., ISPConfig runs on it out of the box).