Now, Docker Containers are nothing but the runtime instance of Docker Image. So, whatever dependencies are required for a particular application are present in this image. A developer writes a code that stipulates application requirements or the dependencies in an easy to write Docker File and this Docker File produces Docker Images. Docker Networkingīefore I deep dive into Docker Networking let me show you the workflow of Docker.Īs you can see in the above diagram.
Well, that comes through Docker Networking. So, how do these containers communicate with each other in various situations?
So, Docker in simple terms is an open platform for developing, shipping, and running applications, enabling the user to separate applications from infrastructures with the help of containers to deliver software quickly. So, applications cannot access each other’s libraries. But, with containerization, the operating system will have a kernel which is the only thing that’s going to be common between all the applications. So, n number of applications share the libraries present in that operating system. To understand Docker, you need to know about the history of how applications were deployed before and then how applications are being deployed using containers now.Īs you can see in the above diagram, the old way had applications on the host. In this blog on Docker Networking, you will go through the following topics: In today’s world, enterprises have become keen in containerization which requires strong networking skills to properly configure a container architecture, and thus, this introduces the concept of Docker Networking.