Q. How do I configure static IPv6 networking under RHEL 5.x / Fedora / CentOS Linux? A. Red Hat / CentOS / Fedora RHEL support IPv6 out of box. All you have to do is update two files and turn on networking. You need to update and configure following files for IPv6 configuration: /etc/sysconfig/network : Turn on networking [...]
It’s common knowledge that when you’re serving a web application you shouldn’t use a standard Apache install to serve static assets, as it comes with too much overhead. I won’t go into the details of why here, as it’s been covered by many other people better qualified than I. What I can do, however, is tell you how [...]
Abstract The purpose is to highlight the most important topics related to setting up ESX/ESXi monitoring as well as applications hosted within managed virtual machines (a MySQL database is used in this tutorial). Tools used: VMware vSphere Hypervisor (ESXi): http://www.VMware.com/products/vsphere/esxi-and-esx MySQL: http://www.mysql.com/downloads Monitoring tool: http://www.veraxsystems.com/en/products/nms Agenda: 1. Adding an ESX/ESXi server to the list of [...]
If you want to SSH login without password or automate your task between two servers, you need to setup SSH login via certificate. This topic has detail steps on How to setup an SSH cetificate. Step1: Generating RSA key You login to your server and type the following command: [root@lifelinux~]#ssh-keygen -t rsa Generating public/private rsa [...]
For this HowTo I used a VirtualBox with CentOS 5.7 x86_64. I attached a separate 20GB Data drive mounted to /data. This will hold the lessfs DB and data. The lessfs mountpoint I put at /lessfs. This is a very basic setup, just to get it running. There is plenty of tuning to be done [...]
This step-by-step document will guide you in creating a Google Mashup, so that RSS alerts from Hyperic HQ appear on your Google home page. This document is intended for current/ prospective users of Hyperic HQ (either Network administrators or other users who have limited or no experience with HQ). After following the step-by-step instructions in [...]
Unhide is a forensic tool to find hidden processes and TCP/UDP ports by rootkits / LKMs or by another hidden technique. Unhide (ps) Detecting hidden processes. Implements six techniques Compare /proc vs /bin/ps output Compare info gathered from /bin/ps with info gathered by walking thru the procfs. Compare info gathered from /bin/ps with info gathered [...]
Load balancing helps provide redundancy to your website. However, one often asked question is how to keep your content synchronized on each server. If you put a new web page on one server, how does it get copied over to the second server? In this article, i’ll explain how to use rsync command to synchronize [...]
If you are running RedHat / CentOS 32 bit and have 4 GB or more RAM use the Linux kernel compiled for PAE capable machines. Your machine may not show up total 4GB ram with 32 bit architecture servers. All you have to do is install PAE kernel package. What is PAE ? Physical Address [...]
If you store private information on your Linux system and you want to prevent other people who use the system from viewing your private files, you need to password protect these files. Solution is to use following commands to encrypt or decrypt files with a password. gpg command GnuPG is the GNU project’s complete and [...]
