Author - Vinodh Krishnaswamy

Configuring PMM Monitoring for MongoDB Cluster

In this blog, we will see how to configure Percona Monitoring and Management (PMM) monitoring for a MongoDB cluster. It’s very simple, like adding a replica set or standalone instances to PMM Monitoring. 
For this example, I have used docker to create PMM Server and MongoDB sharded cluster containers. If you want the steps I used […]

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Understanding PMM QAN – Graphs & Metrics

understanding PMM QAN

In this blog post, I will share with you how to set up the PMM QAN for MongoDB and the formulas behind the metrics and graphs that you see on the QAN dashboard.
When one of my customers wanted to load test and understand the behavior of the queries in their MongoDB instance through a […]

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MongoDB Rollback in replicaset

MongoDB Rollback

In this blog post, we’ll look at how MongoDB rollback works during replicaset failovers.
In recent versions, MongoDB has provided lots of features related to replicaset and automatic failover. When it comes to failover, the next question that arises is “How does MongoDB ROLLBACK work during replicaset failover?”
If a PRIMARY member (say node A) stepped down […]

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