![]() ![]() Means it’s just a portion of the operating system! All the other portions are shared between all the containers. Docker virtualize your operating system for the software’s, so you can create as many software’s (containers) as you need and run them all on a shared operating system.ĭocker is much more flexible and scalable than virtual machines and it runs everywhere!! (development, production, staging, Q/A, CI).Ī Container is just the part of the operating system (Linux of almost any distribution) that is responsible for running a software (like a DB engine “MySQL” or Cache system “Redis”). Now let’s talk about how to bypass the virtual machines limitations using different technology like Docker.ĭocker creates virtual containers. ![]() Likely, there’s a smart trick for using virtual machines on production, the trick is you can provision your virtual machine with configuration management tools (like Puppet, Chef and Ansible) and then run the same tool on production to provision your production environment. As well as it doesn’t make sense to run a virtual operating system on production, which means if you are using virtual machines technologies (like Vagrant) you can only share the environment with other developers and team members, but not with production servers. However, virtual machines takes a lot of resources to run, so don’t expect to run five operating systems on top of yours. They basically virtualize your machine hardware for the operating systems, so you can create as many operating systems as you need and run them all on a shared hardware. (Which you can SSH into and install everything you need to start coding).Ī virtual machine (like VirtualBox and VMWare) is a virtual operating system running on top of your native operating system. Vagrant is a virtual machine manager, means it helps you create, provision and shares a virtual machine. That aside, each of them does the job in a different way, and each has its own advantages. Tools like Vagrant and Docker, are built to help with this, they both creates virtual environments, which can be used to build and run your applications. The solution to all of the mentioned troubles would be to ship the development environment with the application code! so when someone gets the code, he can boot the environment and have everything ready. But this can lead to some troubles! and has some limitations, such as reinstalling everything whenever you change your development machine (computer, laptop), switching between software versions, using the same port for two different software’s, sharing the application with other people when you have made some special configurations to the environment, etc… You can, of course, install those software’s and tools manually on your machine (your own operating system). To build and run a web application, you need to install few software’s/tools and configure them. ![]()
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