Linux is a premium force in the web hosting industry, which is also achieving popularity as a PC operating system nowadays. When it comes to hosting a website, Linux web servers are primarily chosen due to their flexibility, stability and security of services. But as we all know, security of all operating systems revolve around controlling access and is hence subject to exploits. Since Linux is open source, vulnerabilities can be easily exploited by potential attackers to gain illegal access to a web server. As a measure of securing Linux at every level, from the kernel up, Security Enhanced Linux (SELinux) was developed.
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In every server farm, backup systems play a vital role in data retention and and recovery. When it comes to Linux, there are many open source backup solutions available. You can setup a well organized backup strategy using rsync, dd, tar, cpio etc, as per your requirement. But, these backups may turn out to be time consuming during restoration and do not provide good options for bare metal restoration. It is always better to go for a good interface through which we can restore data, quickly. In such a scenario, R1soft can be used as an optimal solution.
Usually, a backup server will be used to store the entire backup data. Server farms consists of several terabytes of data, which makes it quite difficult to manage them using a local storage. So normally NAS devices are chosen to ensure reliable backup operations. For such a setup, Buffalo Terastation Pro, which provides a very reliable and good management interface will be a good option.
The fourth extended file system was developed as the successor of the commonly used ext3 journaled file system. The ext4 file system has significant advantages over the ext3 and ext2 file systems.
Support for the ext4 file system has been available from the Linux kernel version 2.6.19 onwards and was officially declared stable in the Linux kernel version 2.6.28. All the latest versions of distributions like Ubuntu (9.04), Fedora (11) etc. include the ext4 file system.
The Trac is a software project management and issue tracking system oriented for development projects. It comes with an integrated Wiki, an interface to version control systems and a number of convenient ways to keep in track of changes within a project. Trac was in fact inspired by the CVSTrac, another project management and issue tracking system.
Trac is written employing the Python programming language and requires a database (SQLite, PostgreSQL or MySQL) for its implementation. For HTML rendering, this software uses the Genshi templating system.
The following URL gives a listing of its supported platforms and also its various distributions :
This article focuses on a simple and quick method to install Trac in CentOS distribution.
Ruby on Rails is an open source web application framework that is defined for the Ruby programming language. Also known as RoR, it uses the Model-View-Controller (MVC) architectural pattern to organize application programming.
Some of the advantages of the Ruby programming language include:
- It is easy to read and write
- It advocates good object-oriented programming practices without being overly constraining
- It provides options for easy extensibility and it is minimalist syntax. This provides an advantage of having the least language-specific complexity
More information about the Model-View-Controller is available at :
Through this article, I aim to walk you through the steps for RoR Installation in Windows. Ruby on Rails requires a web server to run it. I choose Mongrel. However, RoR can also work with Lighttpd or Apache (either as a module or via CGI, FastCGI or mod_ruby).
A Web Host has to actively monitor all the services running on each of its Internet Servers. Customers assume that the services advertised by the host are available 24/7, and hence Internet servers monitoring takes a high priority in the Web Hosting business world. A Web Host can be sure that all promises are being kept through an effective server monitoring system. A software installed on one server which can remotely monitor your Internet servers becomes the best solution. There are Commercial and Free options.
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Zabbix, which has both free and commercial support, is a high-class open source distributed monitoring solution. Zabbix is a network management system application used to monitor and track the status of various network services, the server health and integrity, and other network hardware. It also allows support to configure e-mail alerts for an event which will help them to quickly react to any server problem. Zabbix has a very good graphic visualization and it plays an important role in monitoring a small batch or a multitude of servers.
In order to store data, Zabbix uses MySQL, PostgreSQL, SQLite or Oracle database engine. This article deals with the Installation and access mechanism of Zabbix.
The “ini files” were used in the older days instead of Registry. INI files are simple text files with a basic structure. It was really difficult to manage with these files in the older versions of Windows. The configuration information regarding the operating systems, application files, hardware etc were stored in these files and scattered all over the system. The Windows Registry was introduced to overcome this difficulty.
During those days when these ini files were used, while installing an application, various parameters regarding the operating system and available hardware had to be known. However, if there was any change in the hardware or operating system software, that would affect the working of the software and the usage of the ini files.
This issue was resolved with the help of Registry. In quite simple terms, the registry is a hierarchical database that stores information about the hardware, operating system, software application, the user preferences and the system preferences.
Microsoft Hyper-V (or Windows Server Virtualization) is a hypervisor-based virtualization system for x64 systems. A beta version of HyperV is included in the x64 editions of Windows Server 2008. A big attraction with Hyper-V is that it is built-in to Windows Server 2008. reducing the expenses considerably, straight away.
Microsoft describes the Hyper-V architecture as ‘micro-kernelised’, which enables it to minimize the footprint of the core Hyper-V code, while still delivering a rich set of features.
Hyper-V includes a hypervisor which is a very thin software layer, less than 1 megabyte in size. This separates the processor from the parent and child partitions. The hypervisor supports all the partitions on the host computer and also provides strong security separation between the parent and child partitions.