Kubernetes vs Docker: What Does It Really Mean?
If you are following the latest trends in the technology field, I hope you came across the latest technology like Kubernetes and Docker. If you don’t know about that, then don’t panic, we will help you to know what is Kubernetes and Docker with a detailed explanation. First let’s start to know in detail about Kubernetes, why it’s used and so on.
What is Kubernetes?
Kubernetes is Google open source platform which was released in 2014. It is used for managing Linux container operations across public, private and hybrid cloud environments. Kubernetes do management, scaling and automate the deployment of your containerized application. In the year 2015 Google donated the Kubernetes Project to the Cloud Native Computing Foundation.
What does Kubernetes do?
If you want to learn about Kubernetes, you must first know about containers. To make it simple, containers are nothing but a mini-virtual machine. It is small, as it does not have device drivers and all the other components of a regular virtual machine. Kubernetes with the help of container orchestration provides a high-level abstraction for managing group of containers. It helps the user to focus on how they want the group of applications to run, rather than not worry about each application that runs in your data centre. Apart from that it provides generic primitives for health checking and replicating your application across the machines, as well as services for wiring your application into micro-services.
How Kubernetes works?
In the above image, you can see the Kubernetes Cluster which consists of Master & Node components.
What is Docker?
Docker is a tool developed by Docker Inc in the year 2013. The company developed & designed Docker to create, deploy, and run applications by using containers in an easier way. Docker is also an open source Platform like Kubernetes. Docker reduces the size of a particular application by running it on the same Linux kernel as the system. To make it in a simple way the whole idea of Docker is its help the developers to easily develop applications, ship them into containers which can then be deployed anywhere.
What does Docker do?
Docker helps to put software code in containers, so it can be used in other systems without the necessity to create resource-intensive virtual machines. One can manage the software code either via a hybrid Cloud or with the help of existing physical hardware resources. Dockers are used for the building and deployment of lightweight applications. The applications can be installed in a package on one machine. The containers which are present in Docker will ultimately boost the performance and save memory, by consuming fewer resources rather than other traditional virtual machines. Docker can be helpful if you have a lot of services which work in an isolated manner. One can use Docker on local machines as well as the cloud.
How does Docker work?
Difference between Docker & Kubernetes
Docker is an open source software tool, by which you can deploy application inside a container. It helps the developer to build an application image and deploy it with simple a command. In Docker, the application is run inside a container, which makes them isolated from other application.
On the other hand, Kubernetes is also an open source software tool like Docker. It contains a container cluster manager tools which allow deploying, maintaining and scaling container over a cluster. Kubernetes works with the help of Docker only. So, if you want to be a part of Kubernetes, your machines need to have Docker Service.
You have to follow different setup to install Kubernetes in each OS. It requires a lot of googling to set up the installation of Kubernets. You need a lot of planning and time to setup Kubernetes. You need to define each node before you start the process.
You need to learn only one set of tools to build and configure things in Docker. There is no need to set up each step in Docker like Kubernets since Docker uses the Docker Swarm Program.
Logging and Monitoring
When the services are deployed within the cluster Kubernetes supports several versions of logging and monitoring
Docker only supports monitoring with third-party applications for Logging and Monitoring. Docker recommends using Reimann for Monitoring.