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All Entries in the "Technical" Category
Varnish Caching Engine with Apache
Assume : domain to be accessed is accessible via the url domain.com Varnish caching engine will run infront of Apache in port 80, and internally forward the requests to Apache. Installation of Varnish: 1. Download Varnish source file from sourceforge.net 2. Install libraries below via yum, as well as any other dependencies. yum install logrotate [...]
File Uploading with Paper clip
This is one of the most useful plug in that can be used in your application when you require to upload a file as attachment to your application, its quite easy to use and with the help of paperclip scaffolding you can achieve file upload feature very easily, below i have explained the steps to [...]
Configure Sphinx in Rails application
Install Sphinx Just run the following three commands on your server or dev machine to install Sphinx: ./configure make sudo make install That will setup Sphinx with default for use with MySQL. If you want to use it with PostgreSQL, then run configure with the following flag: ./configure –with-pgsql Note: you can download the sphinx [...]
Install Image-magick and rmagick for rails
Start by removing any old versions previously installed via apt-get: sudo apt-get remove imagemagick Then update apt-get and install some supporting packages: sudo apt-get update *(sudo apt-get install libperl-dev gcc libjpeg62-dev libbz2-dev libtiff4-dev libwmf-dev libz-dev libpng12-dev libx11-dev libxt-dev libxext-dev libxml2-dev libfreetype6-dev liblcms1-dev libexif-dev perl libjasper-dev libltdl3-dev graphviz gs-gpl pkg-config)* *its a single line command. get [...]
Cloud Computing Security
There are a lot of concerns in the minds of experts while moving to cloud computing. The first one is information or data security. While cost and ease of use are two great benefits of cloud computing, there are significant security concerns that need to be addressed when considering moving critical applications and sensitive data [...]
How Does Vmware differentiate itself as a Virtualization Solution Platform?
Vmware is the leader in the infrastructure Virtualization space with industry’s first bare-metal X86 architecture that was launched in 2001, and now into the fourth generation of Vsphere infrastructure suite. Vsphere is now a fully mature production ready enterprise class Virtualization solution with a customer base that includes all 100 of the Fortune 100 companies. [...]
Installation of openQRM
Preparing Network: Install “bridge-utils” # sudo apt-get install bridge-utils Now edit /etc/network/interfaces and setup a bridge using a static, private ip-address. #cat /etc/network/interfaces auto lo iface lo inet loopback auto br0 iface br0 inet static address 192.168.3.251 netmask 255.255.255.0 gateway 192.168.3.1 bridge_ports eth0 bridge_fd 0 bridge_hello 2 bridge_maxage 12 bridge_stp off #sudo /etc/init.d/networking restart #brctl [...]
An overview on openQRM
OpenQRM(open Qlusters Resource Manager) is an Open Source Data Center Management and Cloud Computing Platform. It is a fully community driven, Open-Source project backed up by main Sponsor openQRM Enterprise. It offers full automation of data centers and their scalable management. Datacenters are custom and complex environments due to the number of involved subsystems like [...]
MySQL High Availability Storage Options
There are various solutions available for achieving high availability and scalability of MySQL data/service. ‘MySQL Replication’ and ‘MySQL Cluster’ the solutions offered and supported by MySQL. Third-party solutions such as DRBD (Distributed Replicated Block Device) and Heartbeat can also be used or one could implement a combination of these technologies. The two solutions offered by [...]
Installation of openQRM using KVM
Preparing Network: Install “bridge-utils” # sudo apt-get install bridge-utils Now edit /etc/network/interfaces and setup a bridge using a static, private ip-address. #cat /etc/network/interfaces auto lo iface lo inet loopback auto br0 iface br0 inet static address 192.168.3.251 netmask 255.255.255.0 gateway 192.168.3.1 bridge_ports eth0 bridge_fd 0 bridge_hello 2 bridge_maxage 12 bridge_stp off #sudo /etc/init.d/networking restart #brctl [...]
MySQL High Availability
There are a various solutions available for achieving high availability and scalability of MySQL data/service. ‘MySQL Replication’ and ‘MySQL Cluster’ the solutions offered and supported by MySQL. Third-party solutions such as DRBD (Distributed Replicated Block Device) and Heartbeat can also be used or one could implement a combination of these technologies. The two solutions offered [...]
Active Directory
An Active Directory is a directory structure used on Microsoft Windows based computers and servers to store information and data about networks and domains. Here are some of the important parameters used in Active Directory. Object: An object is anything that can be part of the directory. e.g: user, group, shared folder, printer etc. Organizational [...]
How to Configure StarWind?
StarWind(Based on iSCSI) is used to create a shared storage area on a Windows Server for use with clustered environment. Download the software from http://www.starwindsoftware.com and complete the installation steps. Then, Start > All Programs > StarWind Software > StarWind Click on Connect, provide the username and password. Right click on Targets, you will get [...]
Share point 2007: Basic farm Installation
Hardware requirements Front-end Web server and application server computers: a dual-processor computer with processor clock speeds of 2.5-gigahertz (GHz) or higher and a minimum of 2 gigabytes (GB) of RAM. Back-end database server: a dual-processor computer with processor clock speeds of 2.0 GHz or higher and a minimum of 2 GB of RAM. Software requirements [...]
Setting up a Private Cloud using Ubuntu 10.04
If we can get the Ubuntu 10.04 latest server edition, this can be done easily. As it comes with an option to select whether we need to setup a normal server or Ubuntu Cluster. On the main cluster controller we can select the cluster option and also need to specify the IP range needed for [...]
