Docker Vs Virtual Machine

Nowadays, companies are looking for Docker & Kubernetes Administrators. Candidates with hands-on experience on Docker often land up in highly paid jobs.

The Difference between Docker vs Virtual machine you should understand before start leaning Docker and Kubernetes.

The Difference between Docker vs Virtual machine you should understand before start learning Docker and Kubernetes.

#docker #kubernetes #virtual machine #cloudcareer #dockercontainer #dockeroverview

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Docker Vs Virtual Machine
Jolie  Reichert

Jolie Reichert

1599200760

The Essential Guide to Installing a Local Magento 2 Environment with Docker

When I just started developing PHP applications I used Mamp or Xamp to set up a local Lamp stack. Later this became Vagrant in combination with VirtualBox and eventually Docker.

The main advantage of Docker is portability, performance and it is scalable. This pays off, especially when you work in a team.

When using commerce with Magento 2 it is possible to use the Magento Cloud Docker environment.

You may already have some experience with Docker, but it might help as a mnemonic. If this is completely new to you, it is good to read the following.

Brief introduction to docker

The main difference between Docker and a VM is mainly the architecture between the two. A VM is a computer software that mimics a real computer. For this he uses a hypervision — also called a “guest machine”.

A hypervision can be a piece of software, firmware or hardware that the VM runs on. The hypervison itself runs on a real computer, this is called the “host machine”.

The hypervison has a complete virtualization stack, such as network adapters, storage and CPU with its own operating system to run programs.

Containers and VM are similar, but the main difference between containers and a VM is that containers use the host computer kernel, which in turn shares it with other containers.

A container does not need a complete virtualization stack and its own os to run programs.

#linux #docker #devops-docker #magento-2 #magento-development #virtual-machine #what-is-a-virtual-machine #docker-php-composer

Iliana  Welch

Iliana Welch

1595249460

Docker Explained: Docker Architecture | Docker Registries

Following the second video about Docker basics, in this video, I explain Docker architecture and explain the different building blocks of the docker engine; docker client, API, Docker Daemon. I also explain what a docker registry is and I finish the video with a demo explaining and illustrating how to use Docker hub

In this video lesson you will learn:

  • What is Docker Host
  • What is Docker Engine
  • Learn about Docker Architecture
  • Learn about Docker client and Docker Daemon
  • Docker Hub and Registries
  • Simple demo to understand using images from registries

#docker #docker hub #docker host #docker engine #docker architecture #api

How to Install and Configure Kubectl: A Tutorial

What is Kubectl?

Kubectl is a command-line tool for Kubernetes. It allows us to execute Kubernetes operations via the API. We can use Kubectl to deploy apps, check logs as well as manage all the other resources of the cluster.

Kubernetes uses an HTTP-based REST API which is the actual Kubernetes user interface employed to manage it. This means that every Kubernetes operation is represented as an API endpoint and can be carried out based on an HTTP-request sent to the endpoint.

In this article, we will review Kubectl, and outline its installation, configuration, and use.

What is Kubernetes?

The name Kubernetes has its origins from the original Greek term for helmsman or pilot. Kubernetes, or ‘k8s’ (pronounced “Kate’s”) is an open-source software tool that was created by Google and is used for scaling, deploying and coordinating containerized applications into easy to manage groups. It supports multiple containerization technologies as well as orchestrates hardware virtualization.

To manage a Kubernetes server cluster effectively, we utilize kubectl as the command-line tool of choice. Basically, kubectl communicates with the master Kubernetes node(s) which in turn submits commands to the worker nodes to manage the cluster. A Kubernetes cluster basically consists of two types of resources.

  • Master server – a master server organizes the cluster
  • Node server – Nodes are the workers that contain and run the applications

Each node contains a Kubelet, which is the agent for managing the node and communicating with the master. We can use kubectl to deploy, explore, review and remove Kubernetes objects (like nodes, images or containers).

Initially, Kubernetes was designed and developed by Google engineers to employ and utilize containers for its workload management. Google generates more than 2 billion containers deployments a week which was provided for by their internal platform code-named Borg (the predecessor to Kubernetes). During Borg’s development, the experience gained was one of the main factors that influenced a significant part of Kubernetes current technologies. Currently, Kubernetes is maintained by the Cloud Native Computing Foundation.

How to Install Kubectl?

The easiest way to install kubectl is to use one of the default package managers for a Linux OS.

Debian/Ubuntu

sudo apt-get update && sudo apt-get install -y apt-transport-https gnupg2

curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -

echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list.d/kubernetes.list

sudo apt-get update

sudo apt-get install -y kubectl

#tutorials #choco #cluster #debian #docker #hyper-v #hyperkit #hypervisor #kubectl #kubernetes #mac #ubuntu #virtual box #virtual environment #virtual machines #virtualized #vm #vm driver #vt-x #windows 10 #windows 8

Docker Vs Virtual Machine

Nowadays, companies are looking for Docker & Kubernetes Administrators. Candidates with hands-on experience on Docker often land up in highly paid jobs.

The Difference between Docker vs Virtual machine you should understand before start leaning Docker and Kubernetes.

The Difference between Docker vs Virtual machine you should understand before start learning Docker and Kubernetes.

#docker #kubernetes #virtual machine #cloudcareer #dockercontainer #dockeroverview

Mikel  Okuneva

Mikel Okuneva

1600563600

On Learning To Use A Virtual Machine

Never used one before the course required me to use one.

You might have heard JVM (Java Virtual Machine) coming with the JDK (Java Development Kit) and JRE (Java Runtime Environment). And we have Oracle’s Virtual Box that is equipped with having multiple virtual machines being stored and used if necessary. Now, let’s go into details about how you can use various virtual machines.

#java-virtual-machine #programming #virtual-machine #oracle-virtual-box #blockchain