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  4. Capistrano: Deploying to a Vagrant VM

Capistrano: Deploying to a Vagrant VM

Mark Needham user avatar by
Mark Needham
·
Apr. 17, 13 · Interview
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I’ve been working on a tutorial around thinking through problems in graphs using my football graph and I wanted to deploy it on a local vagrant VM as a stepping stone to deploying it in a live environment.

My Vagrant file for the VM looks like this:

# -*- mode: ruby -*-
# vi: set ft=ruby :
 
Vagrant::Config.run do |config|
  config.vm.box = "precise64"
 
  config.vm.define :neo01 do |neo|
    neo.vm.network :hostonly, "192.168.33.101"
    neo.vm.host_name = 'neo01.local'
    neo.vm.forward_port 7474, 57474
    neo.vm.forward_port 80, 50080
  end
 
  config.vm.box_url = "http://files.vagrantup.com/precise64.box"
 
  config.vm.provision :puppet do |puppet|
    puppet.manifests_path = "puppet/manifests"
    puppet.manifest_file  = "site.pp"
    puppet.module_path = "puppet/modules"
  end
end

I’m port forwarding ports 80 and 7474 to 50080 and 57474 respectively so that I can access the web app and neo4j console from my browser.

There is a bunch of puppet code to configure the machine in the location specified.

Since the web app is written in Ruby/Sinatra the easiest deployment tool to use is probably capistrano and I found the tutorial on the beanstalk website really helpful for getting me setup.

My config/deploy.rb file which I’ve got Capistrano setup to read looks like this:

require 'capistrano/ext/multistage'
 
set :application, "thinkingingraphs"
set :scm, :git
set :repository,  "git@bitbucket.org:markhneedham/thinkingingraphs.git"
set :scm_passphrase, ""
 
set :ssh_options, {:forward_agent => true}
set :default_run_options, {:pty => true}
set :stages, ["vagrant"]
set :default_stage, "vagrant"

In my config/deploy/vagrant.rb file I have the following:

set :user, "vagrant"
server "192.168.33.101", :app, :web, :db, :primary => true
set :deploy_to, "/var/www/thinkingingraphs"

So that IP there is the same one that I assigned in Vagrantfile. If you didn’t do that then you’d need to use ‘vagrant ssh’ to go onto the VM and then ‘ifconfig’ to grab the IP instead.

I figured there was probably another step required to tell Capistrano where it should get the vagrant public key from but I thought I’d try and deploy anyway just to see what would happen.

$ bundle exec cap deploy

It asked me to enter the vagrant user’s password which is ‘vagrant’ by default and I eventually found a post on StackOverflow which suggested changing the ‘ssh_options’ to the following:

set :ssh_options, {:forward_agent => true, keys: ['~/.vagrant.d/insecure_private_key']}

And with that the deployment worked flawlessly! Happy days.

Virtual Machine Capistrano (software)

Published at DZone with permission of Mark Needham, DZone MVB. See the original article here.

Opinions expressed by DZone contributors are their own.

Related

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  • Java: A Time-Tested Programming Language Still Going Strong
  • Power of Azure B Series Virtual Machines
  • Azure Virtual Machines

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