Varnish config from template

gistfile1.txt

namespace :varnish do
  desc "Configure varnish"
  task :configure, :roles => :varnish do
    ws = find_servers :roles => :web
    set :ws, ws
    backends_vcl = from_template("backends.vcl.erb")
    put backends_vcl, "/tmp/backends.vcl"
    run "sed -i -e 's/SUFFIX/'`hostname -s`'/' /tmp/backends.vcl"
    run "#{sudo} cp /tmp/backends.vcl /etc/varnish"
    run "#{sudo} varnishadm vcl.load #{date} /etc/varnish/default.vcl && " +
        "#{sudo} varnishadm vcl.use #{date}"
  end
end