Override Vagrant configuration settings locally (per-dev)

Question

I\'d like the question to be answered in general, but to illustrate it, here\'s a use case:

I\'m using Vagrant for a simple LMAP project. I use standalone Puppet for pro

Answer 1

Here's an idea. It may be "ugly" and "wrong", but, at least, it works :)

# file2.rb, this is your per-dev configuration file
puts "included external file which uses outer var: #{foo}"

# file1.rb, this would be your Vagrantfile
puts 'first'
foo = 'bar'

external = File.read 'file2.rb'
eval external
puts 'second'

Let's run that

$ ruby file1.rb
first
included external file which uses outer var: bar
second

Adapting to your example, file2.rb would contain only usage of config without defining it (config will be provided from outer context)

  config.vm.provision :puppet do |puppet|
    puppet.facter = { "proxy" => "proxy.host:80" }
  end

And your Vagrant file may look like this:

Vagrant::Config.run do |config|
  external = File.read 'Vagrantfile.local'
  eval external

  # proceed with general settings here
  config.vm.provision :puppet do |puppet|
    puppet.facter = { "proxy" => "proxy.host:80" }
  end
end

Update (another, "data-driven" approach)

# Vagranfile.local
config_values[:puppet][:facter][:proxy] = 'proxy.host:80'

# Vargantfile
Vagrant::Config.run do |config|
  config_values = {
    puppet: {
      facter: {
        proxy: nil
      },
      manifests_file: 'my_manifest.pp'

    }
  }
  external = File.read 'Vagrantfile.local'
  eval external # this should overwrite proxy config

  # proceed with general settings here
  config.vm.provision :puppet do |puppet|
    if config_values[:puppet][:facter][:proxy]
      puppet.facter = { "proxy" => config_values[:puppet][:facter][:proxy] } 
    end

    puppet.manifests_file = config_values[:puppet][:manifests_file]
  end
end

Answer 2

Consider using vagrant-proxyconf plugin. It allows to set proxy for all Vagrant VMs globally.

Another solution is to run external shell script during provisioning. I use separate config.vm.provision section at the beginning of Vagrantfile to do it:

# reset: true below is needed to reset the connection to the VM so that new
# environment variables set in /etc/environment will be picked up in next
# provisioning steps
config.vm.provision "shell", reset: true, inline: <<-SHELL

  if [ -f /vagrant/Vagrantfile-settings.sh ]
  then
    /vagrant/Vagrantfile-settings.sh
  fi
SHELL

Then just put a Vagrantfile-settings.sh file next to Vagrantfile, add it to .gitignore (or whatever) and put any script inside, for example to set proxy for interactive terminal, all daemons and docker containers:

# Proxy for interactive terminals
echo "http_proxy=http://PROXY_ADDRESS:PROXY_PORT" >> /etc/environment
echo "https_proxy=http://PROXY_ADDRESS:PROXY_PORT" >> /etc/environment
echo "no_proxy=127.0.0.1,localhost" >> /etc/environment
# Proxy for daemons (e.g. Docker deamon - used to pull images, apt - run from default daily cron job)
mkdir /etc/systemd/system.conf.d
echo [Manager] > /etc/systemd/system.conf.d/01-http-proxy.conf
echo "DefaultEnvironment=\"http_proxy=PROXY_ADDRESS:PROXY_PORT\"" >> /etc/systemd/system.conf.d/01-http-proxy.conf
echo "DefaultEnvironment=\"https_proxy=PROXY_ADDRESS:PROXY_PORT\"" >> /etc/systemd/system.conf.d/01-http-proxy.conf
echo "DefaultEnvironment=\"no_proxy=127.0.0.1,localhost\"" >> /etc/systemd/system.conf.d/01-http-proxy.conf
echo "# Docker requires upper-case http proxy environment variables..." >> /etc/systemd/system.conf.d/01-http-proxy.conf
echo "DefaultEnvironment=\"HTTP_PROXY=http://PROXY_ADDRESS:PROXY_PORT2\"" >> /etc/systemd/system.conf.d/01-http-proxy.conf
echo "DefaultEnvironment=\"HTTPS_PROXY=http://PROXY_ADDRESS:PROXY_PORT\"" >> /etc/systemd/system.conf.d/01-http-proxy.conf
echo "DefaultEnvironment=\"NO_PROXY=127.0.0.1,localhost\"" >> /etc/systemd/system.conf.d/01-http-proxy.conf
# Proxy for docker containers started with `docker run`
mkdir /home/vagrant/.docker
cat <<EOF > /home/vagrant/.docker/config.json
{
  "proxies": {
    "default": {
      "httpProxy": "http:/PROXY_ADDRESS:PROXY_PORT",
      "httpsProxy": "http://PROXY_ADDRESS:PROXY_PORT",
      "noProxy": "127.0.0.1,localhost"
    }
  }
}
EOF
chown -R vagrant:vagrant /home/vagrant/.docker