initialize everything!

everything.js

function initializeEverything(cb) {
  host_info.create(function(err, h) {
    other_module.create(function(err, m) {
      yet_another_module.create(function(err, y) {
        cb(err, h, m, y);
      });
    });
  });
}

initializeEverything(function(err, h, m, y) {
  // do everything
});