How do docker and kubernetes work together

HOW DO DOCKER AND KUBERNETES WORK TOGETHER REGISTRATION
HOW DO DOCKER AND KUBERNETES WORK TOGETHER CODE
HOW DO DOCKER AND KUBERNETES WORK TOGETHER FREE

In this post, weвЂ™ll explore the fundamentals of Kubernetes and Docker and take a look at the advantages of using them individually and in tandem. And while they excel in their respective areas, they also are complementary and can be powerful when combined. They are, in fact, fundamentally different technologies and donвЂ™t compete - itвЂ™s not an either/or question. A lot of people want to know which option is better, but that question is based upon a misconception. When it comes to container technologies, two names emerge as open source leaders: Kubernetes and Docker. This post looks at how the two powerful technologies can complement each other.

HOW DO DOCKER AND KUBERNETES WORK TOGETHER FREE

In this short lesson we have learnt the following concepts:ДЇeel free to subscribe to my YouTube Channel for IT Tutorials.Although many people want to compare Kubernetes and Docker, it's not actually an either/or question. Then you can think of tools used to handle it. I would advice you focus on learning the concepts first. The challenge many learners have is mixing up the tools and the concepts. Some source control tools are Git and TFS. This is the method of tracking changes to program codes of application being developed.

Then we have Source Control (or Version Control). Again, there are tools to do this: for instance Jenkins, Ansible.

HOW DO DOCKER AND KUBERNETES WORK TOGETHER CODE

This refers to being able to make changes in the code and deploy it automatically without any application downtime. One popular one is called Eureka.ДЄnother concept is Continuous Integration/Continuous Deployment (CI/CD). Again there are tools to handles service discovery. So if there are so many microservices out there, how do you find them? Or letвЂ™s say a user makes a request over HTTP, how is this request routed to the appropriate microservice to handle the request? This is what service discovery is all about.

This means that it can create more containers or destroy containers depending on the load on the service.Дefinition (in case you have a quiz): Kubernetes is a container orchestration system.ДЄnother concept I would like you to know is вЂService DiscoveryвЂ™. The strong point with Kubernetes in addition to being open-source is the ability to perform scaling. So Kubernetes just like Docker is an orchestration tool for managing microservices. How do all these services work together? That is what orchestration is all about. These microservices has to communicate with each other, used resources, store data etc. LetsвЂ™ say you build a system made up of dozens of microservices. So what then is Kubernetes? To understand Kubernetes, you need to understand the concept of orchestration. Just to let you know also that each container runs on a different port. You can start as many containers (instances) as you want from the same image. Once the image starts running, a container is created, and the application runs inside the container. So letвЂ™s say you distribute your docker image. So what is a container? A container is an instance of an image. Once an image is created, this image can then be distributed and can be run on any platform. An image is simply your microservice packaged together with all needed to run it: runtime, dependencies etc. This means that when you break your application down into microservices, you can then use docker to create what is called docker images. Another definition is that Docker is a platform for building running and distributing containers. Now Docker is simply a tool used to implement microservices. The interesting thing about it is that although these application would work together, but they can also be independent of others.

HOW DO DOCKER AND KUBERNETES WORK TOGETHER REGISTRATION

Each one represents a particular function of the original application.ДЇor example, user registration would be itвЂ™s own application, same with checkbalance, make transfer etc (in case of banking application. These smaller applications are called microservices. In this method, the application is broken down into several small applications. And we are all done! Application built in this way, we call it monolithic, which means just one application. Then we provide users with the HTTP url to the application. Normally, the way we develop application is to write, the codes, add other components (database connection for example), test it, if it works, we then deploy it to the server. WeвЂ™ll cover the following sub-topics in this lesson: This actually follows from my preview explanation microservice. So you after this explanation, you can decide whether to go further. The interesting thing is that they are actually very simple concepts and not too tough to learn. In this short write-up, I would explain to you these important trends in IT.

How do docker and kubernetes work together