node js cluster mongoose connection

Are you looking for something like this?

db.connection.on('error', function (e) {  console.log(e + " this is error");  db.close();});

For my API server, I wrote a plugin for Hapi to handle this. Take a look, it might help you.

'use strict';var bluebird = require('bluebird');var mongoose = bluebird.promisifyAll(require('mongoose'));exports.register = function(plugin, options, next) {  mongoose.connect(options.mongo.uri, options.mongo.options, function (e) {    if (e) {      plugin.log(['error', 'database', 'mongodb'], 'Unable to connect to MongoDB: ' + e.message);      process.exit();    }    mongoose.connection.once('open', function () {      plugin.log(['info', 'database', 'mongodb'], 'Connected to MongoDB @ ' +  options.mongo.uri);    });    mongoose.connection.on('connected', function () {      plugin.log(['info', 'database', 'mongodb'], 'Connected to MongoDB @ ' +  options.mongo.uri);    });    mongoose.connection.on('error', function (e) {      plugin.log(['error', 'database', 'mongodb'], 'MongoDB ' + e.message);    });    mongoose.connection.on('disconnected', function () {      plugin.log(['warn', 'database', 'mongodb'], 'MongoDB was disconnected');    });  });  return next();};exports.register.attributes = {  name: 'mongoose',  version: '1.0.0'};