A pragmatic article to help you plan and programmatically upgrade self-managed worker nodes using k8s and aws golang api This post is intended to help you plan and automate the upgrade of self-managed worker nodes in an AWS EKS cluster. Kubernetes community releases a new minor version at a rapid…

Key learnings from my struggle of connecting a VM to a infiniband assigned virtual function. Following a documentation to configure SRIOV on a system with a Mellanox Infiniband card, everything worked as expected except that the connectivity between VM & infiniband wouldn’t work because the virtual function state was down. …

A simple example of using Go module to resolve package dependencies This post will show you an example of how Go modules bring simplicity to package management in golang. Go modules were first introduced in Go version 1.11. When developing go code with multiple packages, if your source files are…

A summary of CloudFormation concepts and experimental learnings from the field to help you quickly start building basic, nested or cross-reference stacks. — This article will walk you through the basic building blocks of AWS CloudFormation to simplify your AWS infrastructure provisioning and management requirements by writing meaningful templates. It will also highlight some key concepts and provide important guidelines to help you write robust, reusable and error-free CloudFormation code.

How to not lose special characters in passwords during code transit. An example use case with AWS CloudFormation helper script. — A common approach to deal with special characters in passwords is to escape them by using escape characters to keep the passwords in their original form. But, there could be situations where you are unable to properly escape the special characters and may end up in having an incorrect password…

This article provides a CloudFormation template which creates an AWS managed Microsoft active directory and modifies its security group rules to accept traffic from the restricted sources of your choice. This article assumes that you are familiar with AWS Managed Microsoft AD and CloudFormation. You can refer following AWS official…

This article provides a template to set a custom route table as the default main route table in your VPC by creating an AWS lambda backed custom resource in your CloudFormation template. This article assumes that you are familiar with AWS CloudFormation basics and also understand the role of a…

This article will guide you through the steps of performing migration of your data from MongoDB to Apache CouchDB using a simple python script. Migrating data from one database to another database can be challenging due to multiple reasons including basic schema and design differences between the source and target…

This article will guide you through the process of setting up a 3 node Apache CouchDB cluster on Kubernetes. It will be deployed as a Kubernetes statefulset of 3 pods, where each pod will receive a single PersistentVolume from NFS storage. This article assumes that you have a basic understanding…