I will follow the above order in which parameters are listed. Integration – This parameter will compare on their ability to integrate with other tools with ease.Startup – This parameter will compare on the basis of their boot time.Size – This parameter will compare Virtual Machine & Docker Container on their resource they utilize.Virtual Machine and Docker Container are compared on the following three parameters: Let me take you through the above diagram. Let’s see a comparison between the two to understand this better. However, there is catch if you choose to use virtual machine. However, now you would think that this can be done using Virtual Machines as well. In case you have any further doubts, please feel to leave a comment, I will be glad to help you. I hope you are with me so far into the article. This is how this container solves the problem. Now this image can be used by the developer, the tester and the system admin to deploy the tomcat environment. In this case, the developer will create a tomcat docker image ( An Image is nothing but a blueprint to deploy multiple containers of the same configurations ) using a base image like Ubuntu, which is already existing in Docker Hub (the Hub has some base images available for free). Now, I will show you how Docker container can be used to prevent this loss. the developer & tester may have installed tomcat 7, however the system admin installed tomcat 9 on the production server. There are some issues that I have listed below with this approach:Ģ) There could be a version mismatch in different setups i.e. If you see the same tomcat environment setup is done thrice. Again the production needs an environment with tomcat installed on it, so that it can host the Java application.
Once the application testing is done, it will be deployed on the production server. Now the tester will again set up tomcat environment from the scratch to test the application. Once the application is developed, it needs to be tested by the tester. In order to do so the developer will setup an environment with tomcat server installed in it. Also, it could be an application oriented container like CakePHP container or a Tomcat-Ubuntu container etc.Ī company needs to develop a Java Application. to full-fill the requirement from an operating system point of view. It could be an Ubuntu container, CentOs container, etc. What is Container ? – Docker Container is a standardized unit which can be created on the fly to deploy a particular application or environment. What is Docker & why is Docker needed? – Docker is a containerization platform that packages your application and all its dependencies together in the form of a docker container to ensure that your application works seamlessly in any environment. Now, after this recap, let me take you ahead. Docker is one of the containerization platforms which can be used to create and run containers.Containers are handled by Containerization engine.Containers have isolated libraries and binaries specific t o the application they are running.Containers do not waste or block host resources unlike virtual machines.
Containers are fast and boots quickly as it uses host operating system and shares the relevant libraries.Virtual Machines are slow and take a lot of time to boot.In the following blog, I will explain – What is Docker & how does it work in detail.īefore we go ahead, let me summarize the learning till now:
In case you have missed the previous instalment to this blog, kindly go through this blog. In the previous blog written by our Training expert, we got you acquainted with Docker and its utilities.