MongoDB

  You should read below articles before reading this article. “How to improve database performance on MongoDB part 1“, “How to improve database performance on …

  This article is the second part of the article named “How to improve database performance on MongoDB part 1“ Ensure you have enough RAM. …

  In a replica set if one of the members is in RECOVERING state and in the log file of that member if you see: [crayon-67ed85684ad3d872581647/]   …

  This little guide is medium in scope, it is not exhaustive. It just gives you an idea to focus 1 Choose the right storage …

HADOOP MULTI NODE INSTALLATION PROCESS [ Note: I am creating multi node in most easiest way by creating and using everything in root mode on …

  Fragmentation on MongoDB databases When we removing a large amount of data from the collection and no plan to replace it, we generate a …

  1:- Enable oplog using –master option while starting mongod service [Version 3.2]. And later version (3.2 +) need to put replSetName=rs0 into the mongo.conf file in …

  During a typical revision of mongod’s logs, we could find slow queries, by default, those queries that take more >100ms. You can change this time …

Replica set configuration on ‘n’ node Replica: We generally have 3 nodes replica set with 1 Primary and 2 secondaries. Below are the steps we will need to …

Important Note : Following features are deprecated in 3.6 ‘rest = true’ and ‘httpinterface = true’ these options need to be commented in mongod.conf . …