Ajeet Raina

  https://collabnix.com Docker Captain, ARM Innovator & Docker Bangalore Community Leader.

     



335 Stories by Ajeet Raina

VMware vSphere High Availability Q/A

Looking for VMware vSphere High Availability based Interview questions? I have attempted to gather important interview questions which you might find useful for your...
1 15 min read

How to setup Salt Halite on CentOS 6.5

Setting up Salt Halite is not straightforward process. Its a WebUI for Salt master where you can easily run commands and manage minions. I...
7 48 sec read

SaltStack on CentOS 6.5

SaltStack is an extremely fast and scalable systems and configuration management software for predictive orchestration, cloud and data center automation, server provisioning, application deployment...
3 9 min read

100 Hadoop Interview Questions

Are you preparing for Hadoop Interview? Have you spent last several hours to get the collection of Hadoop MapReduce questions? Are you in last...
1 24 min read

Learn Puppet With Me – Day 4

In today’s session, we are going to quickstart writing a basic puppet module. A Very simple example could be creating a directory on remote...
1 38 sec read

Learn Puppet with Me – Day 3

Puppet is an open source framework and toolset for managing the configuration of computer systems. Puppet can be used to manage configuration on UNIX...
1 9 min read

How to install Nagios on Linux?

Last week I thought of setting up Nagios on my Linux Box.I installed a fresh piece of RHEL on my Virtualbox and everything went...
0 6 min read

How to configure Directory Indexing in Apache?

While attending RHCE examination, I faced a lot of question related to Apache. While installation and configuration of Apache was the first topic, I...
0 21 sec read

Installing Open-Xchange on Ubuntu 12.04

I thought of starting my day today with Open-Xchange. I had Vmware Workstation installed on one of Windows 7 Enterprise machine. I installed a...
11 4 min read

Learn Puppet with Me – Day 2

Today we are going to learn about Puppet Modules. What is Puppet Modules? Puppetlabs defines it as “Modules are self-contained bundles of code and...
27 49 sec read

Learn Puppet With Me – Day 1

Today is the day 1 of Learn Puppet with Me. I am starting this thread for those who want to learn Puppet smoothly. Puppet...
2 52 sec read

How to setup RAID 1 on Ubuntu Linux?

RAID 1 creates a mirror on the second drive. .You will need to create RAID aware partitions on your drives before you can create...
2 2 min read

How to setup RAID 0 on Ubuntu Linux?

RAID 0 will create striping to increase read/write speeds as the data can be read and written on separate disks at the same time....
40 1 min read

How do I bind NIC interrupts to selected CPU?

I read this interesting mailing thread¬†few weeks back. I won’t be late to share this with open source enthusiast like you. Here goes the...
41 52 sec read

Puppet Module for JBOSS

Recently one of my colleague called me up with a problem statement where he was finding difficulty configuring JBOSS through puppet. I tried to...
36 3 min read

Automated shutdown of ESXi and VMs through Powershell

My friend was running a cybercafe center. He has dozens of ESXi running 100 of VMs. He was using Dell Multi-UPS Management console to...
1 1 min read

Installing Java Development Toolkit (JDK) on Linux

Installing Java Development toolkit on Linux is always matter of difficulty since Oracle provides both RPM and tarballs in their official website. Installing RPM...
0 2 min read

How to setup Domain Name Server (DNS) on Linux?

It has been long I was thinking of writing something about DNS(Domain Name Server). DNS is a database of the IP to Name and...
1 2 min read

How to test Multicast Packet Filtering?

Today morning I started my day testing with Multicast Packet Filtering. I had buntu 12.04.1 and CentOS 6.5 in my VM running over ESX...
1 57 sec read

Understanding /proc/cpuinfo

A hyperthreaded processor has the same number of function units as an older, non-hyperthreaded processor. It just has two execution contexts, so it can...
1 3 min read

How to setup vsFTP server on Linux?

FTP refers to File Transfer Protocol. By default, Red Hat supports vsftp. If you do minimal RHEL installation, you mightn’t have vsftp related RPM...
0 39 sec read

How to increae Swap space under Linux

“Can Linux be installed without swap space?”. This question was asked to me on one of Linux System admin interview. It might confuse anyone...
3 56 sec read

How to setup Centralized Logging System on Linux?

I was just hanging around blogs until I cam across one nice piece of setting up centralized Logging setup.I thought to try it out...
5 1 min read

How to create password-less SSH for Linux

Sometimes you might need setting up Password-less SSH for running script or for application where you dont want to use password everytime. Here is...
3 31 sec read

Installing SMARTFOX Server Pro on Debian

SmartFoxServer is a massive multiplayer platform for building games, MMO communities, virtual worlds, realtime multiplayer games. To setup SFS, in short on Linux platform...
0 35 sec read

Setting up a Simple Samba Share – Part II

In the previous article we saw the practical implication of setting up a samba share.In this article we will explore more about the Samba...
5 1 min read

Setting up a Simple Samba Share – Part I

Samba is an important component to seamlessly integrate Linux/Unix Servers and Desktops into Active Directory environments using the winbind daemon.In simple words, Samba is...
1 1 min read

Fog – An Open Source Cloning Solution

If you are a system admin who is still sticking to Clonezilla, you must probably look out to try FOG – a very fast...
1 6 min read

Introduction to Puppet..

Puppet is an IT automation tool which has already gained popularity among the system admins, developers and Cloud architects. Whether its operating system resource...
11 10 sec read

Getting Started with Ansible

Ansible is an IT automation tool. It can configure systems, deploy software, and orchestrate more advanced IT tasks such as continuous deployments or zero...
1 2 min read