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CREATING A PRIVATE DOCKER REGISTRY

CREATING A PRIVATE DOCKER REGISTRY

ABOUT REGISTRY A registry is a repository of docker images. Docker by default points to Public Docker Registry which is also called as Docker Hub. docker search would list results from docker hub and more information about image is available on hub.docker.com You can upload your docker images

QUICKLY DEPLOY HADOOP CLUSTER USING DOCKER

QUICKLY DEPLOY HADOOP CLUSTER USING DOCKER

Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models. It is designed to scale up from single servers to thousands of machines, each offering local computation and storage. Installing, configuring and adding new datanodes to

MICROSOFT SQL SERVER AS A DOCKER CONTAINER

MICROSOFT SQL SERVER AS A DOCKER CONTAINER

Nobody could have ever imagined Microsoft SQL Server running on Linux. I appreciate the foresight of Satya Nadella, CEO Microsoft embracing Linux and OpenSource. Now as Microsoft SQL Server vNext CTP 1.1 is available for Ubuntu, RHEL7 & CentOS7, how about running it as a container. To run SQL

CREATING DOCKER CONTAINER USING ANSIBLE

CREATING DOCKER CONTAINER USING ANSIBLE

Ansible and Docker have acquired a larger share among DevOps products & tools. So how about creating a generic ansible playbook to deploy a docker container. > If you are new to Ansible, I would recommend you to go through Ansible: Getting Started [http://googlinux.com/ansible-getting-started/]. We start our

ANSIBLE: GETTING STARTED

ANSIBLE: GETTING STARTED

WHAT IS ANSIBLE? Ansible was originally written by Michael DeHaan in Python with its first release on February 20, 2012. It was later acquired by Red Hat. Ansible is an open source configuration management and orchestration utility. It helps to automate deployment or softwares and configurations of multiple remote hosts.

UNDERSTANDING DISTRIBUTED DATA STORAGE

UNDERSTANDING DISTRIBUTED DATA STORAGE

With the advent of 21st century, we entered a digital world, people have started using technology in every aspect of life, adopting it more and more to make life easier and save time. With this increased use, the demand to store and preserve the user data has also increased manifold.

OPENSTACK: LAUNCHING AN INSTANCE ON A SPECIFIC COMPUTE HOST

OPENSTACK: LAUNCHING AN INSTANCE ON A SPECIFIC COMPUTE HOST

OpenStack takes care of Instance scheduling automatically for us depending on flavour selected during Nova instance boot, however, many times, we might need to populate the instance on a specific hypervisor / Nova compute node. To achieve this we need to specify the compute node at the stage, you select Flavour,

IP COMMAND FROM IPROUTE2

IP COMMAND FROM IPROUTE2

> ip command in Linux is used to show / manipulate routing, devices, policy routing and tunnels. It is a provided by iproute2 package. ifconfig command which is provided by net-tools package has been around since long and will stay around. ip is more powerful and modern and will eventually replace

MAN-IN-THE-MIDDLE ATTACK FRAMEWORK: MITMF

MAN-IN-THE-MIDDLE ATTACK FRAMEWORK: MITMF

MITMf is a Framework for Man-In-The-Middle attacks. MITMf aims to provide a one-stop-shop for Man-In-The-Middle and network attacks while updating and improving existing attacks and techniques. Originally built to address the significant shortcomings of other tools (e.g Ettercap, Mallory), it's been almost completely re-written from scratch to

HOW TO LIST ALL TAGS OF A DOCKER IMAGE

HOW TO LIST ALL TAGS OF A DOCKER IMAGE

DOCKER SEARCH To search a image on docker remote registry you can use docker search command. Example: [email protected]:~# docker search ubuntu NAME DESCRIPTION STARS OFFICIAL AUTOMATED ubuntu Ubuntu is a Debian-based Linux operating s... 4482 [OK] ubuntu-upstart Upstart is an event-based replacement for ... 65 [OK] rastasheep/ubuntu-sshd Dockerized

HOW TO UPDATE ALL DOCKER IMAGES

Docker does not have a command to update images that you have already pulled. The only way is to pull all images again using docker pull <image> command. This simple one-liner can help you update all images at once. docker images |grep -v REPOSITORY|awk '{print $1}

BASIC LINUX SYSTEM COMMANDS

SOME BASIC LINUX SYSTEM COMMANDS -------------------------------------------------------------------------------- DISPLAY LINUX SYSTEM INFORMATION [root@web-server ~]# uname -a Linux web-server.novalocal 3.10.0-229.4.2.el7.x86_64 #1 SMP Fri Apr 24 15:26:38 EDT 2015 x86_64 x86_64 x86_64 GNU/Linux DISPLAY KERNEL RELEASE INFORMATION [root@web-server ~]# uname

SHELL SCRIPTING - ARGUMENTS / POSITIONAL PARAMETERS

In this series of Shell Scripting, today we discuss about command line arguments also know as positional parameters. To handle options on the command line, we use a facility in the shell called positional parameters. Positional parameters are a series of special variables ($0 through $9) that contain the contents

BASH SCRIPTING BASICS

> No programming language is perfect. There is not even a single best language; there are only languages well suited or perhaps poorly suited for particular purposes. --Herbert Mayer The default shell in most of todays linux distribution is Bash (Bourne-Again shell). A shell script is a "quick-and-dirty"

CLEARING DMESG LOGS

ABOUT DMESG dmesg is used to examine or control the kernel ring buffer. The main purpose of dmesg is to display kernel and boot messages. This simple commands can help you save & clear your old dmesg buffer. root@fa498b2ed935:~# dmesg |tail [0.000000] device veth0624ab4 left promiscuous mode [0.

WORKING WITH VIM

CURSOR MOVEMENT * h - move left * j - move down * k - move up * l - move right * w - jump by start of words (punctuation considered words) * W - jump by words (spaces separate words) * e - jump to end of words (punctuation considered words) * E - jump to