Mongo Monitor : Mongo Current Operations monitoring by lite application

Introduction

In this blog, we have mentioned how we can monitor the current operations of MongoDB instances with a small application developed by us. Its light weight application was developed using Nodejs, HTML, and javascript. It’s a very helpful application to monitor running queries on MongoDB and do the analysis on it:

Pre-requisite :

• • Nodejs and npm.
  • Network connectivity between MongoDB and the application
  • MongoDB Database user to authenticate the application with the database.
  • Browser : Chrome, Edge, Firefox

Git Download Link :

Mongo Monitor (MM)

How to Install / Use :

• • Create a database user on the MongoDB database with limited privileges (clustermonitor)  to fetch the current operation data.

use admin; db.createUser({ user: "mongomon", pwd: "yourStrongPassword", roles: [ { role: "clusterMonitor", db: "admin" }, { role: "read", db: "admin" } ] }) 

• • Download the git repo from the download link.
  • Make a change in the config file with the host and port of your Mongo instance.
  • Go to the path where the repo is downloaded and open a terminal.
  • Run command :  node ./app.js
  • Now open the link on browser:  http://localost:3000
  • Login to the application using the newly created database user.
  • Click on the current ops button.
  • You will see the current operations running on the database by the user. operation id, query, seconds running ( in millis ), app name ( if exists ), and index used by the query.

Conclusion

Here we are monitoring our Mongo long running queries / current operations using our lite application. In this application you can efficiently monitor your Mongo queries with only analytical information.