SUMMARY: A comprehensive health check of a MongoDB replica set revealed that severe performance degradation was caused by a stalled TTL (Time-To-Live) Monitor on an undersized cluster, which was successfully resolved by scaling compute instances and manually purging...
Summary When a high-volume insert workload caused a MongoDB server running on Ubuntu to crash due to 100% disk utilization, the WiredTiger storage engine's inability to complete mandatory recovery prevented the database from binding to its connection port until...
MongoDB is a high-performance, document-oriented database system that provides significant benefits for businesses across a wide range of industries. This is a comprehensive analysis of the business benefits of MongoDB. Use Cases and Industries MongoDB is widely used...
MongoDB is one of the most popular NoSQL databases for modern web applications. It is designed to be scalable, flexible, and easy to use. However, like any technology, it is not immune to misuse or abuse. In this article, we will discuss the top 10 things a company...
MongoDB is a popular NoSQL database management system known for its flexibility, scalability, and ease of use. Developers widely use it to build web applications, mobile applications, and other software systems. In addition, MongoDB can be used as a self-managed...
If you’re upgrading a ReplicaSet from a version before 3.2 of MongoDB to a new version, you will run into this warning when connecting to the shell. Protocol Version 0 is not supported in MongoDB 4.0. Checking Protocol Compatibility To verify which protocol version...
If you're running a 3 member ReplicaSet that uses an Arbiter as its third member, then you will be presented with this warning when you connect to the shell. When a node goes down in a PSA architecture (Primary, Secondary, Arbiter) the wiredTiger storage engine starts...
MongoDB-CR is the challenge response authentication mechanism used in MongoDB versions before 4.0. In version 4.0 this mechanism is removed and you must upgrade to the new mechanism SCRAM before you upgrade to 4.0. You will receive this warning if you have launched...
When you're upgrading from previous versions before 3.6 you might notice this warning showing up in the shell when you start the server for the first time. This warning is telling you that you don't have an IP bound to your instance, preventing any connections to the...
When running a MongoDB instance, it's always important and even recommended to disable Transparent Huge Pages. Database workload can be poor when THP is enabled. Service File This service will allow you to disable THP during startup. Create the service file we'll use....