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MySQL Databases to Separate Disks

You may have a database server which started out small, with all its databases stored on the same disks, that is now experiencing severe storage I/O bottlenecks. With so many heavily accessed databases on the same storage device your queries are timing out while waiting for response from disk. And despite all your efforts in […]

Installing Memcached to Improve Database Performance

SQL databases are very good at storing and retrieving data, and they can do so quickly. However, no matter how well you tune your database servers there will come a time during periods of high traffic that your database server becomes a large bottleneck. By utilizing technologies like Memcache, we can keep results of frequently […]

setup an NFS Server on CentOS 6

The distributed file system called Network File System (NFS) allows client computers to access files hosted on other computers over the network. Unlike other network file sharing protocols, such as Microsoft’s SMB, NFS shares must be mounted on the client before they can be access.

Install & Configure NFS

A base server installation of CentOS […]

Deploy a Distributed File System Server on CentOS 6

Distributed File Systems (DFS) are used to easily access multiple CIFS file shares, hosted on separate servers, using a single namespace on your network. The actual shares can either be hosted locally on the DFS server itself or on separate servers.

The benefit of using a single namespace for your users to access your shares […]

Joining Samba 3 on CentOS 6 to Active Directory


In small environments, administering Linux servers using only local accounts is manageable. However, in large environments hosting many hundreds or thousands of servers, the task of administering each server, manually maintaining user accounts and passwords would be a very daunting task. A central Identity and Access solution is required to effectively manage such environments. […]

Bonding Network Interfaces in CentOS 6


Bonding is the ability to take two or more network interfaces and present them as one to a client. Depending on the method you use, the bond can create different types of connections. You can, for example, create an aggregate channel to double or even triple your total bandwidth; create a fault tolerant connections […]

Installing and Configuring MariaDB 10 on CentOS 6

This tutorial will guide you through the deployment process of MariaDB on a Red Hat-based Linux server, such as CentOS. We’ll start by configuring the hardware and then move into the installation and configuration of MariaDB.

MariaDB is a fork of the very popular and open source MySQL database, which is now owned by Oracle. […]

Puppet Master Server on CentOS 6

very popular tool for any operational guy’s DevOps utility belt is Puppet – a system configuration management service. It allows you to automate the entire process of system configuration and maintain consistency across groups of servers. Imagine having to deploy 50 servers for a new web farm, with each server requiring the exact same configuration. […]

Logical Volume Snapshots in CentOS 6

If it hasn’t happened to you yet, you’ll eventually experience a package update or system change that renders your server useless. You’ll then be suffer through multiple stages of fright, ranging from “Do we have a recent backup?” to “Where’s the documentation to rebuild this thing!?”

With the advent of logical volumes in Linux, we […]

Kickstart CentOS 7: Making ISO for automated installation

Kickstart” is powerful tool for automated OS installation and configuration available in CentOS or RHEL. You can install CentOS without touching keyboard or mouse and even can automate post installation configuration process.

I’m recently building a Hadoop cluster for R&D, which makes me repeatedly install and re-install CentOS on several virtual machines. This is boring […]