#Rails quit all servers how to
#Rails quit all servers install

What if you could spin up your Rails, PostgreSQL, Redis, and Sidekiq stack in about 5 seconds? What if as a consultant or freelancer with 10 Rails projects, you had everything you needed isolated for each project without needing to waste precious SSD disk space? What if you could develop your Rails application in isolation on your work station without using RVM or chruby, and changing Ruby versions were super easy? Docker is very lightweight-it typically takes a few milliseconds for a container to start, and running a container doesn’t use much disk space at all. It also takes many seconds to boot-up a virtual machine, and each VM can potentially be gigabytes in size.ĭocker containers share your host’s kernel, and isolation is done using cgroups and other linux kernel libraries. They allow you to isolate services, but there are a few major differences that make virtual machines much less efficient.įor starters, you need to have an entire guest operating system for each application you want to isolate. You may have used Vagrant, VirtualBox, or VMWare to run a virtual machine. What Makes Docker Different from a Virtual Machine

#Rails quit all servers install

The Docker image contains the code, runtime, system libraries and anything else you would install on a server to make it run if you weren’t using Docker. This unit is typically labeled as a Docker image.Įverything the application needs to run is included. * Puma version: 5.5.2 (ruby 3.0.TomFern / dockerizing-ruby What is Docker?ĭocker allows you to package up an application or service with all of its dependencies into a standardized unit. Kill the Rails server again, using the gem $/kill_rails> bin/rails server The last instruction shows that the local Rails server was actually killed.

You should see something like this : Killed: 9 You can notice the PID is 89102, as expectedĪnd go back to the first terminal window. Given the PID we just noticed, and the 1st paragraph of this tutorial, we can type : $> lsof -wni tcp:3000 Leave your terminal window “as-is”, with the local web server running. Notice that PID has changed : now the value is 89102. Open the Gemfile and add gem 'shutup', group: :developmentĬheck that the Rails server runs properly Server should run locally without error, and the default Rails page application should appear at Now stop your local server. Side note The PID is actually displayed once in the verbose logging that appears right after you started the server. => Run `bin/rails server -help` for more startup options => Rails 7.0.0 application starting in development forceĬheck everything is working by running $/kill_rails> bin/rails server Install fresh new Rails app $> mkdir kill_rails & cd kill_rails Ruby 3.0.0p0 // you need at least version 3 hereĨ.3.0 // you need at least version 7.1 here If you want to test the problem “from scratch”, here is a small tutorial. Repository and documentation available here Tutorial from scratch If this is a problem that happends too frequently, you can install a gem dedicated to this problem : shutup. Replace 51195 by your own PID and that’s it. On your computer it will probably be another number, but for our example, the solution will be kill -9 51195 If you local Rails server is running on port 3000, you have first to discover what PID is used : $> lsof -wni tcp:3000ĬOMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME

#Rails quit all servers how to

How to kill your Rails server ? This could happen if your Rails server is buggy, and restart is not possible.