Docker and kubernetes interview questions and answers

#Docker and kubernetes interview questions and answers software#

Docker containers are not tied to any specific infrastructure: they run on any computer, on any infrastructure, and in any cloud. This is a very important question so just make sure you donвЂ™t deviate from the topic and I will advise you to follow the below mentioned format:Дocker containers include the application and all of its dependencies, but share the kernel with other containers, running as isolated processes in user space on the host operating system.

Tip: Be aware of Dockerhub in order to answer questions on pre-available images. Images are stored in a Docker registry such as В because they can become quite large, images are designed to be composed of layers of other images, allowing a minimal amount of data to be sent when transferring images over the network. Images are created with the buildВ command, and theyвЂ™ll produce a container when started with run. In other words, Docker images are used to create containers. Note:Unlike Virtual Machines which has its own OS Docker containers uses the host OSДЄs you have mentioned about Virtual Machines in your previous answer so the next question in this Docker Interview Questions blog will be related to the differences between the two.Дocker image is the source of Docker container. You can refer the diagram shown below, as you can see thatВ containers run on a single machine share the same operating system kernel, they start instantly as only apps need to start as the kernel is already running and uses less RAM.

#Docker and kubernetes interview questions and answers software#

This guarantees that the software will always run the same,regardless of its environment. anything that can be installed on a server.

Now you should explain Docker containers.Дocker containers, wrap a piece of software in a complete filesystem that contains everything needed to run: code, runtime, system tools, system libraries etc. Dockeris a containerization platform which packages your application and all its dependencies together in the form of containers so as to ensure that your application works seamlessly in any environment be it development or test or production.