AlexNogard: IT HowTo

Linux & Opensource : Monitoring : Centreon, Nagios, Owncloud ..

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Howto reset your Centos Root password

root linux

Your Linux machine is so stable that it’s been several months since you didn’t log on it. Bad luck, you do not add the Root password in your password manager. You are trying to connect, trying every conceivable password, impossible … you forgot! No Stress, here’s a technique that let you reset your root password on your CentOS.

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Howto Install nagios 4.0.1 on Centos 6.4

logo nagios

Nagios is a monitoring tool under GPL licence. This tool lets you monitor servers, network hardware (switches, routers, …), applications and services. A lot of plugins are available (more than 3000) and its big community makes Nagios the biggest and the most maintained open source monitoring tool. This tutorial shows how to install Nagios 4.0.1 on CentOS 6.4.

Nagios 4 is the latest stable release published the 20th of last september. This release improved disk I/O latency, some new configuration variables, and other specifications available here : What’s new in Nagios core 4.X.X.

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Nginx 1.2.7 installation on Centos 6.4

nginx logoNginx is a powerful web server processing requests asynchronously. Not a memory guzzler as Apache! Nginx can be used as a web server, reverse proxy web proxy or email. It wants to be very modular.

In this article we will see how to install Nginx 1.2.7 on Centos, and some basic configurations. The purpose of this paper is to lead us to the following: installing Naxsi, a web application firewall for Nginx.
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G4L (Ghost 4 Linux) : Backup & Restore your hard disk & partitions

Ghost-for-Linux

G4L (Ghost 4 Linux) is a Linux Live CD, G4L let you ghost your hard disk : complete backup, compression & transfert to an other computer / server

G4L (Ghost 4 Linux) est un utilitaire plus qu’utile sous forme de Live CD , il permet le ghost de disque dur et de partitions, c’est à dire, le backup complet (backup en binaire : bit par bit, ou par système de fichier.), la compression de ce backup, ainsi que le transfert vers une autre marchine through various protocols: NFS, CIFS (SMB), sshfs, or FTP. G4L also provide a usefull toolbox with : startftpd et telnetd, let you create a ftp/telnet server on your computer, an hard disk rescure, a testDisk to scan & repair damaged partitions, parted to create new partitions & lot other cool stuff.

In this How To, I will tell you how to backup & restore your hard disk from a remote server.

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Bash Scripting : Automated Vhost Creation on Apache

/bin/bash

I wrotte an article some times ago, I decided to share it with you. The aim of this script is to automate the Vhost creation thanks to a simple bash script. For a system administrator, it let you win some times & avoid some errors. The script creates a directory, creates a virtual host and verifies its integrity, assigns the proper permissions and creates a new line in our /etc/hosts. This script was created on CentOS. Just make some changes to accommodate directory level to Debian!

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