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Error message “cannot enable Hyper-V service” on Windows 10

Docker is a popular tool for building, running, and shipping containerized applications. However, some users may encounter the error...
Avinash Bendigeri
Sep 20, 2023 1 min read

What is Hugging Face and why it is damn popular?

In the dynamic landscape of Natural Language Processing (NLP) and machine learning, one name stands out for its exceptional...
Ajeet Raina
Sep 20, 2023 2 min read

What is Docker Compose Include and What problem does it solve?

Docker Compose is a powerful tool for defining and running multi-container Docker applications. It enables you to manage complex applications...
Ajeet Raina
Sep 19, 2023 3 min read

What is Docker Swarm and what problem does it solve?

Docker Swarm is a container orchestration tool built and managed by Docker, Inc. It is the native clustering tool...
Ajeet Raina
Sep 17, 2023 11 min read

How to Containerise a Large Language Model(LLM) App with Serge and Docker

Large language models (LLMs) are a type of artificial intelligence (AI) that are trained on massive datasets of text...
Adesoji Alu
Sep 18, 2023 4 min read

Sidecar vs Init Containers: Which One Should You Use?

Sidecars have been a part of Kubernetes since its early days. They were first described in a blog post...
Karan Singh
Sep 15, 2023 3 min read

Docker for Data Science: Streamline Your Workflows and Collaboration

Data science is a dynamic field that revolves around experimentation, analysis, and model building. Data scientists often work with...
Ajeet Raina
Sep 15, 2023 6 min read

Guide to Different Types of Coding Languages: Your Source of Urgent Help in Programming Dilemmas

The path of a programming specialist starts at college when a student learns different types of coding languages. This...
Avinash Bendigeri
Sep 15, 2023 3 min read

All Stories

Building Docker-Ready Virtual Infrastructure through Docker Machine

"Is VM passe?" ~ this is an important debate ongoing around the globe among the CEOs, CFOs and CIOs. Most of...
Ajeet Raina
Dec 13, 2015 3 min read

New Container Network Model @ Docker 1.9

Docker 1.9 new networking is Software Defined Networking (SDN) for containers. Pushing the experimental version to the public was a right...
Ajeet Raina
Nov 14, 2015 10 min read

Understanding Docker Networking – Part-I

This is a tutorial series for understanding how Docker Networking really works. I have tried to put it in very simple...
Ajeet Raina
Nov 1, 2015 9 min read

How to build .DEB packages through Docker

Building .DEB package is still a daunting process. It involves a series of compiling, linking and building the source packages. Compiling...
Ajeet Raina
Oct 31, 2015 1 min read

The Anatomy of Docker Containers

You must be curious about what goes in and out of the running Docker containers. Debugging a normal Linux system processes...
Ajeet Raina
Oct 17, 2015 6 min read

A Docker Deployment Workflow

Docker is an amazing technology and it just simplifies both workflows and communication. Traditionally, the cycle of getting an application from...
Ajeet Raina
Oct 15, 2015 1 min read

Getting access to Docker Formatted Container Images on Red Hat Systems

Just like Docker, Amazon and Red Hat too announced the availability of Docker formatted container images. This is purely an effort...
Ajeet Raina
Oct 13, 2015 2 min read

How to get rid of Docker images with no repository?

I had dozens of Docker containers and images running on my host machine. I played around those images for my internal...
Ajeet Raina
Oct 11, 2015 1 min read

Run Dell SYSCFG inside a Docker Container

Docker is all about application. It doesn't need BIOS, NIC and firmware to run any application. But its gives you flexibility...
Ajeet Raina
Oct 10, 2015 1 min read

Running Docker Private Registry server Frontend UI

Are you planning to setup own Docker private registry in your lab? Are you planning to bring all the in-house developers...
Ajeet Raina
Sep 20, 2015 1 min read

How to setup Mediawiki in seconds using Docker?

I still follow the same old traditional mediawiki software to track the roadmap, knowledge base articles, latest and updates for Linux...
Ajeet Raina
Sep 13, 2015 2 min read

Running Docker containers on Windows

Are you a Microsoft enthusiast? Do you want to try running containers on Windows platform? Then you have at the right...
Ajeet Raina
Aug 1, 2015 41 sec read

Highlights from the Dockercon 2015

Last month at San Francisco @ Dockercon15, there were numerous exciting announcement which includes runtime container called runC, Docker network, Docker...
Ajeet Raina
Jul 26, 2015 1 min read

How to access Docker namespace?

It is never recommended to install openssh-server on the container for just mere shell access. It is always suggested to keep your...
Ajeet Raina
May 27, 2015 1 min read

How to Link multiple Docker containers together?

Today we are going to look at an interesting concept of linking containers. In our previous post, we pulled LAMP which...
Ajeet Raina
May 21, 2015 12 min read

Setting up LAMP stack in a Docker container

Yesterday evening I decided to spend time on setting up LAMP( Linux, Apache, MySQL and PHP) stack inside a docker container....
Ajeet Raina
May 19, 2015 1 min read

How to push Docker Image to Docker Hub Registry?

This is step by step guide on how to push Docker Image to Docker Hub registry. To get started with this...
Ajeet Raina
May 19, 2015 3 min read

Automate the Bare Metal Provisioning Process through Puppet Razor

This blog post describes how to automate the bare metal provisioning of physical and virtual machines through Razor. Razor is an...
Ajeet Raina
May 18, 2015 5 min read

Getting Started with Docker – Part-II

In my previous blog post we talked about how to pull images, create containers, start and stop the containers, today we are...
Ajeet Raina
May 15, 2015 4 min read

Getting Started with Docker – Part-1

This is a step by step guide for getting started with Docker. This guide starts with a fresh CentOS 7.0 host...
Ajeet Raina
May 15, 2015 4 min read

Running Hadoop over Lustre

This blog post describes how to run Apache Hadoop over the open source distributed parallel file system like Lustre. Hadoop is...
Ajeet Raina
May 14, 2015 4 min read

Running Puppet on Solaris

Few months back I tried setting up Puppet on Solaris platform. Puppetlabs provides bits for Puppet Enterprise software for Solaris in...
Ajeet Raina
May 11, 2015 1 min read

A Dirty Guide to iPerf

By default, the Iperf client connects to the Iperf server on the TCP port 5001 and the bandwidth displayed by Iperf...
Ajeet Raina
May 11, 2015 6 min read

Setting up OpenStack Juno with 1 controller and compute node

Here is a helpful script which just setup 1 OpenStack Juno controller and 1 compute node in an easy way: File:...
Ajeet Raina
May 11, 2015 6 min read

Orchestrating Docker using Puppet

Dockers containers are revolutionizing the cloud computing world, spreading everywhere and powering developers world-wide to automate deployment of applications as a...
Ajeet Raina
May 11, 2015 4 min read

How to change Docker Image Installation Directory?

Are you running out of space while creating more and more containers? Here is a guide to change the default docker...
Ajeet Raina
May 9, 2015 2 min read

Error: /usr/bin/docker: relocation error

Are you getting the below error while starting with the fresh docker installation on CentOS 7.0? /usr/bin/docker: relocation error: /usr/bin/docker: symbol...
Ajeet Raina
May 7, 2015 22 sec read

How to find dormant users on your Linux Box?

Want to know the inactive users on your Linux machine who have not been using the machine since long time? The...
Ajeet Raina
Apr 18, 2015 1 min read

How to enable Docker behind the firewall?

Are you working in restricted corporate environment? Are you looking for how to run Docker behind the firewall.You can always specify...
Ajeet Raina
Apr 10, 2015 19 sec read

Restrict maximum simultaneous logins on Linux

Want to restrict simultaneous number of logins attempt on Linux machine? Here is the quick way of doing it. 1. Edit...
Ajeet Raina
Apr 3, 2015 1 min read

PowerCLI Cookbook Published !!

I am very thrilled and excited about Packtpub publisher's recently published "PowerCLI Cookbook". I have been part of a reveiwer team...
Ajeet Raina
Mar 31, 2015 19 sec read

VMware vSphere Internals Q/A

Welcome Readers !! This is a second series of VMware vSphere Q/A which is emphasized on ESXi internals and related feature...
Ajeet Raina
Mar 31, 2015 3 min read

Understanding Docker Container Architecture

What is Docker? Docker is a lightweight containerization technology that has gained widespread popularity in recent years. What does Docker uses?...
Ajeet Raina
Mar 21, 2015 2 min read

Introduction to Docker Containers

Docker is a new open source tool based on Linux container technology (LXC). LXC is an OS level virtualization method for...
Ajeet Raina
Mar 10, 2015 4 min read

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...
Ajeet Raina
Mar 8, 2015 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...
Ajeet Raina
Feb 7, 2015 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...
Ajeet Raina
Feb 5, 2015 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...
Ajeet Raina
Jan 19, 2015 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...
Ajeet Raina
Jan 19, 2015 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...
Ajeet Raina
Dec 20, 2014 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...
Ajeet Raina
Dec 20, 2014 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...
Ajeet Raina
Dec 20, 2014 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....
Ajeet Raina
Dec 20, 2014 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...
Ajeet Raina
Dec 19, 2014 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...
Ajeet Raina
Dec 19, 2014 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...
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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....
Ajeet Raina
Dec 7, 2014 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....
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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,...
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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...
Ajeet Raina
Dec 7, 2014 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 -...
Ajeet Raina
Dec 6, 2014 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...
Ajeet Raina
Nov 15, 2014 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...
Ajeet Raina
Nov 15, 2014 2 min read

It was an Openstack Day…OSI 2014

Yesterday I attended Open Source India 2014 event which happened in NIMHANS Convention Center, Bengaluru. If you are new to OSI,...
Ajeet Raina
Nov 8, 2014 3 min read

Installing Skype on CentOS 6.5

Getting skype working on CentOS 6.5 has been a daunting job for lot of system administrators. Usually I found system administrators...
Ajeet Raina
Nov 5, 2014 49 sec read

Automating Oracle Weblogic Server installation through shell script

Automation always saves your considerable time. Especially when you have to follow the similar step for hundreds of machine, automated scripts...
Ajeet Raina
Nov 4, 2014 2 min read

How to integrate Redmine with Git?

Redmine built through Ruby on Rails has been impressive free and open source web-based project management. I have been Trac quite...
Ajeet Raina
Nov 2, 2014 2 min read

Running Hadoop on Ubuntu 14.04 ( Multi-Node Cluster)

This is an introductory post on Hadoop for new begineers who want step by step instruction for deploying Hadoop on the...
Ajeet Raina
Nov 1, 2014 7 min read
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