438 Stories by Ajeet Raina
Post Dockercon 2017 @ Austin TX, I raised a feature request titled “LinuxKit command to push vmware.vmdk to remote ESXi datastore”. Within few weeks...
It’s time to look at GPUs inside Docker container.. Docker is the leading container platform which provides both hardware and software encapsulation by allowing multiple...
Here comes the most awaited feature of 2017 – “Building Docker Swarm cluster which includes all Windows cluster, or a hybrid cluster of Linux...
By default, Docker assigns IPv4 addresses to containers. Does Docker support IPv6 protocol too? If yes, how complicated is to get it enabled? Can I...
LinuxKit GITHUB repository recently crossed 3000 stars, forked around 300+ times and added 60+ contributors. Just 5 months old project and it has already...
Let’s talk about Dockerized Elastic Stack… Elastic Stack is an open source solution that reliably and securely take data from any source, in any...
Docker For Mac 17.06 CE edition is the first Docker version built entirely on the Moby Project. In case you’re new, Moby is an...
“..Its Time to Talk about Bring Your Own Components (BYOC) now..” The Moby Project is gaining momentum day by day. If you are System...
Today I spoke at Docker Bangalore Meetup which took place in IBM India Systems Development Lab(ISL) – an R&D Division located at Manyata Embassy Business...
Docker 17.06.0-ce-RC5 got announced 5 days back and is available for testing. It brings numerous new features & enablements under this new upcoming release. Few...
With around 2800+ GITHUB stars, 54 contributors, 28 external, 50+ commits per week since the DockerCon launch, LinuxKit has really gained a lot of...
Yet Another Problem Statement(YAPS)… Let us accept the fact – “Managing Docker on different Infrastructure is still difficult and not portable”. While working on...
One of the most compelling feature of LinuxKit is “Everything replaceable and customisable”. You can now build up your own customised Linux Operating System...
At Dockercon last month, Oracle released its flagship databases, middleware and developer tools into the Docker Store marketplace via the Docker Certification Program. What...
Docker 17.05.0 Final release went public exactly 2 week back.This community release was the first release as part of new Moby project. With this...
Moby has turned to be an open playground for collaborators. It has become a popular collaborative project for the container ecosystem to assemble container-based systems....
Why https://github.com/docker/docker been redirected to moby/moby? Why Docker created the Moby project? Is Docker renamed to Moby? What it actually mean when we say...
In my last blog post, I showed how to get started with LinuxKit for Google Cloud Platform. LinuxKit is secure, lean and portable Linux Subsystem...
“…LinuxKit? A New Beast? What problem does it solve for us?..” In case you missed out Dockercon 2017 and have...
If you are looking out for Web UI for your private Docker Registry, I would recommend to test-drive a tool called “Portus” powered by...
Do you want to learn Docker FOR FREE OF COST? Yes, you read it correct. Thanks to a playground called “play-with-docker” – PWD in...
Docker, Inc announced initial support for volume driver plugins for the first time under Docker 1.8 release. Since then, there has been subtle changes...
Go programming language has really helped in shaping Docker as a powerful software and enabling fast development for distributed systems. It has been helping...
Apache JMeter is a popular open source software used as a load testing tool for analyzing and measuring the performance of web application or...
Are you still thinking whether or not to attend Dockercon 2017? Still finding it difficult to convince yourself or your boss/manager to allow you...
DellEMC Rex-Ray 0.8 Final Release was announced last week. Graduated as top-level project within {code} community, RexRay 0.8 release has been considered as one...
Docker Engine 1.13.1 went GA last week and introduced one of the most awaited feature called Secrets Management . With a mission to introduce...
Recently I purchased a brand new slim 13.3 inch Apple Mac Book Air with an amazing 1.6GHz dual-core Intel Core i5 processor. Introducing Siri to...
Raspberry Pi 3 Model B is the first 64 bit version and the third generation Pi box which runs on 1.2GHz 64 bit quad-core...
Docker Engine 1.13.0 Final Release has been officially announced . With over 1050 commits, 1025 file changes and 175 days since Engine 1.12,Docker team...
With almost every new release, Docker Inc. has open sourced its vital and popular software tools to the community to join hands with all...
2016 has been a great year for Docker Inc. With the announcement of Docker 1.12 release in last Dockercon, a new generation Docker clustering...
Docker Datacenter(DDC) provides an integrated platform for developers and IT operations teams to collaborate securely on the application life cycle. It is an integrated,...
Today Enterprise IT look for a secure, scalable, out-of-the-box, elastic, portable and integrated solution platform which can span across from their highly dense data...
Carrying a slogan “Code Open, Deploy Anywhere”, {code} by DellEMC is an organization of open source engineers focused on next generation infrastructure that effectively...
Are you planning to speak or conduct your next Docker Workshop on Raspberry Pi’s? Still curious to know whether the tools like Docker Machine,...
Docker Compose has gained lots of attention in the recent past due to its easy one-liner installation(on Linux, Windows & Mac OS X), easy-to-use...
Last week I read a research paper called “Computer Immunology” written by a computer scientist Mark Burgess(Founder of CfEngine). Thanks to Solomon Hykes for...
Containers are stateless by nature and likely to be short-lived. They are quite ephemeral than VMs. What it actually means? Say, you have any...
September 26, 2016 was an important day for both Docker Inc. and Microsoft at Ignite conference in Atlanta. Two week ago, Microsoft finally unveiled...
What’s the story of Docker compose in 1.12.1 Swarm Mode? How does it integrates with the new APIs – service, node and swarm? How...
In the previous post, we talked about running Nagios container on Raspberry Pi for the first time.Nagios is a free and open source monitoring...
Why should I deploy Docker to IoT devices? What are the use cases of running containers inside the IoT device like Raspberry Pi? Is...
“Does Docker Engine 1.12 has storage discovery similar to Service Discovery and Orchestration Feature? What is the Volume/Persistent Storage story in 1.12 Swarm Mode?...
In the previous post, I showed how to get Docker 1.12.1 up and running on Raspberry Pi3 in just 5 minutes. Under 1.12.1 release,...
In our previous posts, we spent considerable amount of time deep-diving into Swarm Mode which is in-built orchestration engine in Docker 1.12 release. The...
Docker support for Raspberry Pi was introduced for the first time in 2016 with 1.12 release. . With Docker v1.12.1 release, a FIRST ARM...
In the previous blog post, we deep-dived into Service Discovery aspects of Docker. A service is now a first class citizen in Docker 1.12.0 which...
Docker 1.12 is GA now. Thanks to Docker Inc. core Team and community support for releasing it on time as promised during DockerCon 2016.In...
Prior to Docker 1.12 release, setting up Swarm cluster needed some sort of service discovery backend. There are multiple discovery backends available like hosted...
In the last Meetup (#Docker Bangalore), there has been lots of curiosity around “Desired State Reconciliation” & “Node Management” feature in case of Docker Engine...
Today Docker Inc. released Engine 1.12 Release Candidate 4 with numerous improvements and added security features. With an optional “Swarm Mode” feature rightly integrated...
“The Best way to orchestrate Docker is Docker” In our previous post, we talked about Swarm Mode’s built-in orchestration and distribution engine.Docker’s new deployment...
Docker Engine 1.12 can be rightly called ” A Next Generation Docker Clustering & Distributed System”. Though Docker Engine 1.12 Final Release is around corner but the...
Docker-Datacenter (DDC) is targeted for both developers and IT operations team. DDC provides both developers and IT operations a common option for managing containers....
In our previous post, we looked at detailed implementation of Docker-Datacenter-In-A-Box (Container-as-a-Service) on VMware ESXi platform. DDC pluggable architecture and open APIs allows flexibility in compute,...
The critical component for any enterprise IT, either having multiple data centers or a hybrid cloud or multiple cloud providers, is the ability to...
Docker 1.11 is two week old now. Popular for its Software Infrastructure Plumbing(SIP), Docker Inc. first focused on adoption of libnetwork, followed by Notary...
Docker’s acquisition of Tutum, a cross-cloud container management service has really paid-off. Two week back, Docker announced “Docker Cloud 1.0” – a new service...
Security issues like kernel exploits, denial-of-service attacks, container breakouts, poisoned images, compromising secrets etc. has been talked a lot in recent times for a...
User Namespace support was introduced as an experimental feature last November under Docker 1.9 version. Docker 1.10 finally brings it as a general availability...
RHEL 7 comes with MariaDB by default. Don’t get surprised if you don’t see MySQL server specific packages being displayed through YUM search utility....
Installing Docker on Linux Kernel 2.6.x is quite unstable. Docker Inc. recommends using Linux Kernel 3.x.x to have smooth Docker functionality. I had OS...
Docker Swarm is 1 year old now. Docker Inc. during DockerConEU, December 2014 made the announcement of Docker Swarm. A Docker Swarm is a...
In our previous post, we spent considerable time in understanding what is Universal Control Plane(UCP) and how to add hosts to UCP. For UCP...
Docker Machine enables a simplified approach to set up Docker hosts on supported platforms, including Linux, Windows, OS X, and various cloud providers, in...
Docker recently announced Universal Control Plane (UCP) beta availability to the public. This tool delivers Enterprise-ready capabilities and is meant to be run in...
Parted Magic is a complete hard disk management solution.Parted Magic is a small live CD/USB/PXE with its elemental purpose being to partition hard drives....
I am not Microsoft guy but recently I have been asked by my colleague to assist him in automating Hyper-V VM provisioning process. There...
“Is VM passe?” ~ this is an important debate ongoing around the globe among the CEOs, CFOs and CIOs. Most of the industry experts...
Docker 1.9 new networking is Software Defined Networking (SDN) for containers. Pushing the experimental version to the public was a right thing Docker Inc....
This is a tutorial series for understanding how Docker Networking really works. I have tried to put it in very simple language so that...
Building .DEB package is still a daunting process. It involves a series of compiling, linking and building the source packages. Compiling tuns your source...
You must be curious about what goes in and out of the running Docker containers. Debugging a normal Linux system processes is very much...
Docker is an amazing technology and it just simplifies both workflows and communication. Traditionally, the cycle of getting an application from local development to...
Just like Docker, Amazon and Red Hat too announced the availability of Docker formatted container images. This is purely an effort to enable Docker...
I had dozens of Docker containers and images running on my host machine. I played around those images for my internal project work. I...
Docker is all about application. It doesn’t need BIOS, NIC and firmware to run any application. But its gives you flexibility to put any...
Are you planning to setup own Docker private registry in your lab? Are you planning to bring all the in-house developers to work internally...
I still follow the same old traditional mediawiki software to track the roadmap, knowledge base articles, latest and updates for Linux Kernel, released operating...
Are you a Microsoft enthusiast? Do you want to try running containers on Windows platform? Then you have at the right place. As of...
Last month at San Francisco @ Dockercon15, there were numerous exciting announcement which includes runtime container called runC, Docker network, Docker Notary etc. Docker...
It is never recommended to install openssh-server on the container for just mere shell access. It is always suggested to keep your container lightweight rather...
Today we are going to look at an interesting concept of linking containers. In our previous post, we pulled LAMP which is a complete...
Yesterday evening I decided to spend time on setting up LAMP( Linux, Apache, MySQL and PHP) stack inside a docker container. I managed to...
This is step by step guide on how to push Docker Image to Docker Hub registry. To get started with this post, I assume...
This blog post describes how to automate the bare metal provisioning of physical and virtual machines through Razor. Razor is an open source tool...
In my previous blog post we talked about how to pull images, create containers, start and stop the containers, today we are going to talk...
This is a step by step guide for getting started with Docker. This guide starts with a fresh CentOS 7.0 host machine, talks about how...
This blog post describes how to run Apache Hadoop over the open source distributed parallel file system like Lustre. Hadoop is a large-scale distributed,...
Few months back I tried setting up Puppet on Solaris platform. Puppetlabs provides bits for Puppet Enterprise software for Solaris in their official website....
By default, the Iperf client connects to the Iperf server on the TCP port 5001 and the bandwidth displayed by Iperf is the bandwidth...
Here is a helpful script which just setup 1 OpenStack Juno controller and 1 compute node in an easy way: File: controller-node-setup #!/bin/bash #get...
Dockers containers are revolutionizing the cloud computing world, spreading everywhere and powering developers world-wide to automate deployment of applications as a portable self-sufficient containers....
Are you running out of space while creating more and more containers? Here is a guide to change the default docker installation directory so...
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 dm_task_get_info_with_deferred_remove, version Base...
Want to know the inactive users on your Linux machine who have not been using the machine since long time? The following simple shell...
Are you working in restricted corporate environment? Are you looking for how to run Docker behind the firewall.You can always specify an HTTP proxy...
Want to restrict simultaneous number of logins attempt on Linux machine? Here is the quick way of doing it. 1. Edit the file /etc/security/limits.conf...
I am very thrilled and excited about Packtpub publisher’s recently published “PowerCLI Cookbook”. I have been part of a reveiwer team and spent couple...
