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Small Discussion about Minikube?

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What is Minikube?

Minikube is a tool that makes it easy to run Kubernetes locally. Minikube runs a single-node Kubernetes cluster inside a VM on your laptop for users looking to try out Kubernetes or develop with it day-to-day.

Minikube supports Kubernetes features such as:

  • DNS
  • NodePorts
  • ConfigMaps and Secrets
  • Dashboards
  • Container Runtime: Docker, rkt, CRI-O and containerd
  • Enabling CNI (Container Network Interface)
  • Ingress

When using a single VM of Kubernetes, it’s really handy to reuse the Minikube’s built-in Docker daemon; as this means you don’t have to build a docker registry on your host machine and push the image into it - 

We can just build inside the same docker daemon as minikube which speeds up local experiments. Just make sure you tag your Docker image with something other than ‘latest’ and use that tag while you pull the image. Otherwise, if you do not specify version of your image, 

it will be assumed as :latest, with pull image policy of Always correspondingly, which may eventually result in ErrImagePull as you may not have any versions of your Docker image out there in the default docker registry (usually DockerHub) yet.

Video for Minikube

posted Jan 30 by anonymous

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What is Docker?

Docker is a tool designed to make it easier to create, deploy, and run applications by using containers. Containers allow a developer to package up an application with all of the parts it needs, such as libraries and other dependencies, and ship it all out as one package. By doing so, thanks to the container, the developer can rest assured that the application will run on any other Linux machine regardless of any customized settings that machine might have that could differ from the machine used for writing and testing the code.

In a way, Docker is a bit like a virtual machine. But unlike a virtual machine, rather than creating a whole virtual operating system, Docker allows applications to use the same Linux kernel as the system that they're running on and only requires applications be shipped with things not already running on the host computer. This gives a significant performance boost and reduces the size of the application.

Docker brings security to applications running in a shared environment, but containers by themselves are not an alternative to taking proper security measures.

The Docker platform is the only container platform to build, secure and manage the widest array of applications from development to production both on premises and in the cloud. Docker Community Edition [CE] empowers developers with tools to build applications and Docker Enterprise Edition [EE] provides IT with multi-architecture operations at scale. 

Docker delivers both an engine for innovation that modernizes without disruption while reducing total costs by more than 50%. Unlike other solutions that specialize in a narrow slice of the enterprise IT portfolio, Docker delivers operations at scale by addressing a diverse set of applications and infrastructure for both developers and IT.

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