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How To Set Up MySQL Database Replication With SSL Encryption On Ubuntu 9.10
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.
Increase your internet speed with Namebench
Increase your internet speed with Namebench. NameBench is a program that searches for the fastest DNS in your area. After the program is finished searching and comparing between DNS it will give you the results including the fastest and nearest DNS in your area. After that all you have to do is edit your connection settings to use the fastest DNS available. NameBench is available for Windows and Mac systems, but most importantly it is Linux compatible.
Securing PostfixAdmin
Many administrators who use Postfixadmin, a web based tool to manage virtual domains on Postfix, would like to secure the transactions between the PostfixAdmin program and the administrator. At the same time often you do not want to add the extra burden of SSL on the whole domain but just want to secure one directory. The solution is to create a certificate for that one directory only and also locking that directory with a password so only administrators can gain access. The example is on an Ubuntu 9.10 server, which will be very similar to most server procedures.
How To Upgrade Debian Etch To Lenny
Debian Etch is soon to be unsupported by the Debian team, therefore all Debian Linux Servers need to be upgraded to Debian Lenny. I have upgraded many Linux servers to Debian Lenny over the past months, so I am providing this guide on how to upgrade Debian Etch to Debian Lenny.
Recover from a frozen system with the magic SysRq key
The magic SysRq key is an old tip to be used to recover from a frozen system, it is advised to be used when the system absolutely locks up - freeze.
Get Xen VM IP address, without login to guest
I have looked around the way to find the IP address for Xen guest without login to guest. There were couple of posts and Xen FAQ which list some methods. The following code is very similar to Xen FAQ post in Network section.
Installing Nginx With PHP5 And MySQL Support On Fedora 12
Nginx (pronounced "engine x") is a free, open-source, high-performance HTTP server. Nginx is known for its stability, rich feature set, simple configuration, and low resource consumption. This tutorial shows how you can install Nginx on a Fedora 12 server with PHP5 support (through FastCGI) and MySQL support.
Record your Desktop with Linux Tools
You can capture video of all of the amazing things happening on your desktop with one of Linux’s many screencasting applications. These programs are perfect for creating demonstrations for blogs and tutorials, and for illustrating projects with more than just still images.
Virtio: An I/O virtualization framework for Linux
The Linux kernel supports a variety of virtualization schemes, and that's likely to grow as virtualization advances and new schemes are discovered (for example, lguest). But with all these virtualization schemes running on top of Linux, how do they exploit the underlying kernel for I/O virtualization? The answer is virtio, which provides an efficient abstraction for hypervisors and a common set of I/O virtualization drivers. Discover virtio, and learn why Linux will soon be the hypervisor of choice.
Set up OSOL PV Guests (build<=131) via virsh on Xen 3.4.3 Dom0 on top of Ubuntu 9.10 Server
This posting is actually responding recent entry in Martin's Blog OpenSolaris 2009.06 domU on opensuse 11.2 dom0 Martin states:- Then I tried out a number of current linux distributions, but except for openSuSE none had a dom0 kernel out of the box which really is a shame. Seems I need to look more closely into KVM with virtio support. Via article bellow i try to explain that due to efforts of Jan Beulich and Andy Lyon xenified aka Suse Kernel 2.6.31.8(9) may be built on any Linux and along with the most recent stable Xen Hypervisor (3.4.2 and higher) port provide Xen Environment supporting OpenSolaris PV Guests , including the most recent unstable builds like 129,130,131 ( i mean vncserver behavior on OSOL PV DomU and GDM/VNC setup ).
Melody: The Other Movable Type
Melody is an open source content management system for bloggers and publishers where its community of users and contributors is its most important feature. This article covers the salient features of Melody and how a vibrant community is the foundation on which all successful products and services are built today. The article also guides us through the setup process for pre-1.0 build of Melody, while the full 1.0 revision shouldn’t be more than a few months around the corner.
Traffic Analysis Using Debian Lenny
By using my Network Monitoring Appliance we noticed a link in MRTG always under heavy load. On this link a lot of different traffic aggregates, so we decided to analyze of what quantities of protocols and therefore applications the cumulative traffic consists.
What is Markdown and why use it?
Markdown is a formatting "language"1 like HTML that you can use to specify the final appearance of text. When you use a "word processor" like Microsoft Word or Openoffice.org Writer, the text you generate is "marked up" (or "marked down" as it were) with formatting codes that determine how the text looks on a screen or when printed out. If you were to look inside a PDF file you would find commands that do this as well. And, a web page is rendered properly in your browser because of formatting codes in HTML. (If you want to see what the HTML guts of this web page look like and you are using Firefox, just hit ctrl-U and a window with the raw HTML coding will pop up and amaze you.)
Speed your internet up with NameBench
After the program is finished searching and comparing between DNS it will give you the results including the fastest and nearest DNS in your area.
How to make money from you Android apps
With the right attitude, and some tips and tricks from industry experts, you can soon turn your homegrown Android app into a nice little earner. Adrian Bridgwater explains how…
How To Set Up Apache2 With mod_fcgid And PHP5 On OpenSUSE 11.2
This tutorial describes how you can install Apache2 with mod_fcgid and PHP5 on OpenSUSE 11.2. mod_fcgid is a compatible alternative to the older mod_fastcgi. It lets you execute PHP scripts with the permissions of their owners instead of the Apache user.
Ten more essential Python tips
Today, Python is one of the most popular programming languages in the open source space. It’s a vast language and there are many gems to discover, so following on from the success of our previous Python tips article, we’ve compiled more tips to make your Python experience that much more worthwhile…
Setting Up A PXE Install Server On Ubuntu 9.10
This tutorial shows how to set up a PXE (short for preboot execution environment) install server with Ubuntu 9.10 (Karmic Koala). A PXE install server allows your client computers to boot and install a Linux distribution over the network, without the need of burning Linux iso images onto a CD/DVD, boot floppy images, etc. This is handy if your client computers don't have CD or floppy drives, or if you want to set up multiple computers at the same time (e.g. in a large enterprise), or simply because you want to save the money for the CDs/DVDs.
Real Time Data Plotting with GnuPlot
I wrote this script a few days ago to plot real-time / streaming data with gnuplot. The motivation was that I needed to test a piece of code for a touchscreen driver that I had written at work. The issue was that the UI wasn’t quite ready yet, so I wanted to test just the driver to be working fine. Now, the very first thought for the software to use that came to me was “gnuplot” but I found that it can’t really do this in an easy way. A colleague suggested me to use “replot” command with gnuplot. I whipped out my perl hat and a few hours later, voila!!
Ubuntuzilla Repository is all you need to get the Latest Firefox Updates in Ubuntu, Finally!
With the introduction of Ubuntuzilla repository, it has become even more easier installing latest Firefox updates in Ubuntu. No more command line burn outs, just use the Synaptic instead.
Installing all new Ubuntu Tweak 0.5.1 in Ubuntu Karmic, Lucid
Ubuntu Tweak is a cute little application meant to make the life of Ubuntu user a lot more easier. It has a number of small workarounds which are really useful especially if you are a newbie Ubuntu user. Some of Compiz animations like "Show Windows" is not at all easy-to-find, if you are not using Ubuntu Tweak.
VBoxHeadless - Running Virtual Machines With VirtualBox 3.1 On A Headless Ubuntu 9.10 Server
This guide explains how you can run virtual machines with Sun VirtualBox 3.1 on a headless Ubuntu 9.10 server. Normally you use the VirtualBox GUI to manage your virtual machines, but a server does not have a desktop environment. Fortunately, VirtualBox comes with a tool called VBoxHeadless that allows you to connect to the virtual machines over a remote desktop connection, so there's no need for the VirtualBox GUI.
Using gnuplot to display data in your Web pages
Use gnuplot to dynamically generate Web pages from your system using raw data to provide graphic images. This raw data typically contains MIS-related information, on system performance, storage, or database growth.
How to get information from the Netscaler using Python and Suds
Recently I just started to use the Citrix Netscalers again ( Load Balancers ). Being the person that I am, I wanted a way to grab the information using the SOAP API. Now Citrix has a ton of documentation for Perl/C/C# and Java ( None for Python ). SOAP client support has not been the best for Python, in my opinion. I know you have soappy/ZSI, which I have had issues with consuming Broken WSDL files ( Having to fix the Broken WSDL file manually, SUCKS!). Just 2 weeks ago, I encountered SUDS. This module is by far, the best SOAP client for Python.
Download Awesome Ubuntu Wallpapers Through Ubuntu Launchpad Repo
You got some really awesome themes for ubuntu via bisigi repo, and now its time to get some cool wallpapers for ubuntu via kwwii repo. This is how you do it in Ubuntu Karmic.
Enlightenment E17 - Another windows manager for Linux
Enlightenment, also known simply as E, is a stacking window manager for the X Window System which can be used alone or in conjunction with a desktop environment such as GNOME or KDE. Enlightenment is also a whole suite of libraries to help you create beautiful user interfaces with much less work than doing it the old fashioned way and fighting with traditional toolkits, not to mention a traditional window manager.
OpenID for Java Web applications
OpenID is a decentralized authentication protocol that makes it easier for users to access resources in your Java Web applications. In this first half of a two-part article, you'll learn about the OpenID Authentication Specification and walk through the steps of incorporating it into a sample Java application. Rather than implement the OpenID Authentication specification by hand, author J. Steven Perry uses the openid4java library and a popular OpenID provider, myOpenID, to create a safe and reliable registration process for a Java application written in Wicket.
How To Back Up MySQL Databases With mylvmbackup On Debian Lenny
mylvmbackup is a Perl script for quickly creating MySQL backups. It uses LVM's snapshot feature to do so. To perform a backup, mylvmbackup obtains a read lock on all tables and flushes all server caches to disk, creates a snapshot of the volume containing the MySQL data directory, and unlocks the tables again. This article shows how to use it on a Debian Lenny server.
Free download : GNU/Linux Advanced Administration
The GNU/Linux systems have reached an important level of maturity, allowing to integrate them in almost any kind of work environment, from a desktop PC to the sever facilities of a big company. In the module called "The GNU/Linux operating system", the main contents are related with system administration. This book is the main documentation for the module. We will learn how to install and configure several computer services, and how to optimise and synchronise the resources. The activities that will take place in this module cover the studied topics in a practical approach, applying these concepts in real GNU/Linux systems.
How To Set Up A USB-Over-IP Server And Client With OpenSUSE 11.2
This tutorial shows how to set up a USB-over-IP server with OpenSUSE 11.2 as well as a USB-over-IP client (also running OpenSUSE 11.2). The USB/IP Project aims to develop a general USB device sharing system over IP network. To share USB devices between computers with their full functionality, USB/IP encapsulates "USB I/O messages" into TCP/IP payloads and transmits them between computers. USB-over-IP can be useful for virtual machines, for example, that don't have access to the host system's hardware - USB-over-IP allows virtual machines to use remote USB devices.
Get full versions of website on an Android phone
A user agent is a client application implementing a network protocol used in communications within a client-server distributed computing system. The term most notably refers to applications that access the World Wide Web, but other systems, such as the Session Initiation Protocol (SIP), use the term user agent to refer to both end points of a communications session.
Installing mod_geoip for Apache2 On Ubuntu 9.10
This guide explains how to set up mod_geoip with Apache2 on an Ubuntu 9.10 system. mod_geoip looks up the IP address of the client end user. This allows you to redirect or block users based on their country. You can also use this technology for your OpenX (formerly known as OpenAds or phpAdsNew) ad server to allow geo targeting.
Get to know Apache Click Java EE
Get introduced to Apache Click, a Java™ Platform, Enterprise Edition (Java EE) Web application framework that enables the creation of Web applications without using Model-View-Controller (MVC) patterns or JavaServer Pages (JSP). This article provides examples of displaying a simple Web page and creating a Web form that submits data that is displayed on a different Web page.
Striping Across Four Storage Nodes With GlusterFS On Ubuntu 9.10
This tutorial shows how to do data striping across four single storage servers (running Ubuntu 9.10) with GlusterFS. The client system (Ubuntu 9.10 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86_64 servers with SATA-II RAID and Infiniband HBA.
An introduction to XML
An Introduction to XML provides students and entry-level professionals with demonstrations of the basics of learning XML, covering topics such as Web 2.0, AJAX, RSS, Web Services and managing XML data. These short Web-based video modules provide clear examples of XML as well as references to popular Web sites that use XML.
IceCat 3.6 is released |With Installation instructions for Ubuntu via PPA repository
IceCat3.6 is released and is available for download. IceCat is the GNU version of the Firefox browser, it is fully free software, as it removes the non-free Firefox artwork.
How-To: Install Finch 2.6.5 in Debian Lenny
Finch is a powerful text user interface instant messaging client based on libpurple, and it comes included in the Pidgin source, the popular GNOME IM client. Finch supports various protocols, including AIM, ICQ, MSN, Yahoo and IRC.
How To Set Up A Terminal Server In Linux Using Ubuntu 9.10 And FreeNX
FreeNX is an open source implementation of NoMachine's NX Server. It is a bit more akin to Microsoft's RDP protocol than the usual VNC, so while keeping bandwidth to a minimum, it maintains good visual quality and responsiveness.
‘Logrogate’ your Linux Log Files
A log file grows without limits unless some action is taken. Growing log files pose many problems - larger files are very difficult to manipulate and file systems can run out of space. Thus there is a need for a solution to prevent the log files from growing beyond a certain size…
Building Kernel Modules With Module-Assistant On Debian Lenny
module-assistant is a tool for building Debian kernel modules from source, without having to rebuild the whole kernel. It fetches module-source packages that have been prepared for the Debian distribution via apt and produces .deb packages. This tutorial shows how to use module-assistant in command-line mode and in interactive mode.
Ten essential Python tips for beginners
Today, Python is one of the most popular programming languages in the open source space. It's a vast language and there are many gems to discover - here are ten tips for new users to get the ball rolling…
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.
Tips to reduce memory usage on Firefox | Linux
For most users, Firefox doesn't use an abnormally large amount of memory. For others, however, Firefox's memory consumption is a major problem, in some cases memory usage in Firefox is due to other sources, like number of plug-ins, themes and extensions
Better video quality with html 5
Finally it is possible to watch youtube videos in html 5 format instead of the flash player. And I have found an easy way to take advantage of this new feature.
How To Set Up A USB-Over-IP Server And Client With Debian Lenny
This tutorial shows how to set up a USB-over-IP server with Debian Lenny as well as a USB-over-IP client (also running Debian Lenny). The USB/IP Project aims to develop a general USB device sharing system over IP network. To share USB devices between computers with their full functionality, USB/IP encapsulates "USB I/O messages" into TCP/IP payloads and transmits them between computers. USB-over-IP can be useful for virtual machines, for example, that don't have access to the host system's hardware - USB-over-IP allows virtual machines to use remote USB devices.
Sidux 2009-4 success: A little help from Ubuntu Lucid Alpha 2 goes a long way
I'll get to Ubuntu Lucid 10.04 LTS Alpha 2 later, but the "safe graphics mode" boot option in that very Ubuntu live DVD helped me figure out how to get Sidux 2009-04 to boot on my Intel 82830 CGC (aka Intel 830m) graphics-running Toshiba Satellite 1100-S101. Over the course of two computing sessions I experienced both the Alpha 2 of the upcoming Ubuntu LTS release as well as the Sidux take on Debian Sid, circa early last year, both of which I've wanted to try in order to "plan" this laptop's future when I decide to leave Debian Lenny behind.
How to Install any Linux on a USB
There are so many reasons why having a Linux distribution on a USB drive can come in handy. From having a “rescue” OS on your keyring to being able to install a new distribution on your EeePC, a “thumb drive” Linux has many uses. But getting Linux onto a USB drive can’t be simple. Right? Wrong. There is a tool, UNetbootin, that makes installing Linux on a USB drive simple. UNetbootin can be used on either Linux or Windows. In this article, we’ll be illustrating it for Both.
Graphical User Interfaces for OpenSIPS 1.6
It is very hard to manage thousands of users manually, so a user-provisioning tool becomes very important in our process. In this article by Flavio E.Goncalves, we are going to see two of these tools—SerMyAdmin and OpenSIPS Control Panel (OpenSIPS-CP). SerMyAdmin is more focused on the administration of the users, while OpenSIPS-CP is excellent for monitoring and provisioning parameters to the system.
How-To: Install Firefox 3.6 in Ubuntu 9.10 Karmic
Firefox 3.6 was released yesterday, after over six months since the last major release, version 3.5. Firefox 3.6 ships with versions for over 70 languages, support for Personas, an add-on allowing you to change the appearance of the tab bar and choose from thousands of themes, improvements to the open video support (like the fullscreen mode), improved JavaScript performance and start-up time, support for the new DOM and HTML5 specs.
How To Install Ailurus 10.01.5 On Fedora
This document describes how to install Ailurus on Fedora 10, 11 or 12. Ailurus is an application which aims at making Linux easier to use. It provides these features: install some software which is not provided in official repository; enable/disable some third-party repositories; change some system settings; help you study Linux skills.
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