Engineering Recover mongo secondary Due to various reasons, mongodb secondary goes out of sync and might be dead/stuck in recovered state or replication lag grows beyond acceptable limit.InstructionsMake sure primary is up and running. Login
Engineering Pets and cattle of infrastructure The metaphor is quite common in cloud for servers. Gist: We name pets and take care of them, nurse them. We ensure pets are in healthy state always and attend immediately if otherwise.
Engineering Don't wait for customer to report errors: A sales pitch of Sentry. In a typical setup, we need a resilient way to track down the errors. To think of it, we're writing code and we're generating the error. Thus, we should know it even before
Travel A walk with self Every other morning I wake up, I kill myself a bit for a few earnings. Be it dreaming what others told to dream of, be it making a visual of else's dream, it
Engineering RDS mysql with terraform Meant for self reference. This is a gist of launching an RDS mysql instance with terraform. It uses module from here: https://github.com/terraform-aws-modules/terraform-aws-rds resource "aws_security_group" "
Engineering Mongodb with Chef and Terraform I want to launch mongodb sharded cluster with chef and terraform on AWS.. show me steps! Let's name our mongos cluster as "Roads". Assumptions: There's a private VPC in AWS with
Engineering Upgrade mongodb from 3.2 to 3.4 Here's a quick guide on how to upgrade mongodb version on a sharded cluster hosted on AWS, AmazonLinux OS. This is done, manually, on a cluster with ~30 TB data with minimal downtime
Engineering RDS with terraform Use terraform and create an RDS: This is work in progress and more details shall be added later. It's only for quick learning and dirty one. Replace necessary values with variables or values,
Engineering Setup VPC with terraform on AWS Down to dirty blog on setting up VPC with terraform. This is to setup a new VPC in ap-south-1 with three public and three private subnets. It'll also take care of NAT Gateways,
Engineering Quick EFK on EKS Assumption: You've a kubernetes cluster running on EKS, and all the kubeconfig, kubectl, aws authentication are handled. What's EFK? Elasticsearch: A search database with support for REST api queries. Fluentd: Data collector typically
Engineering Bring up Zookeeper+Kafka cluster This is for self reference. You may find it useful too. Objective is to deploy a kafka + zookeeper cluster in a dirty way. This is going to be on AWS. Assumes you can
Stories The low tides of high hopes The sand washed deep away engrossed every while, The wind howling high away embraced with a wail, The clouds moving far away endorsed with a will, I was sitting on a high rock
Engineering Service Completeness on kubernetes Note: This isn't a verbose blog post covering all aspects. This is more of a "I want to confirm what I already know" kind. When migrating microservice to kubernetes, it's essential
Engineering Science and Art of choice We've quite a few choices to make in infrastructure, regarding architecture design and etc. I'm here to deal with cost factor involved in choice of tools we adapt or build. End of the
Stories Shutter tales I was against the idea of photography for quite a few years. I was firm believer in live in the moment, not capture them for memories. When I saw a tiger in a
Engineering I deleted /usr/share accidentally A few days ago, kafka reported an error in balancing and new messages produced seem to start failing in few partitions. As usual, I logged into all kafka brokers to see what's happening.
Travel Vacations of 2019 Hey all, here's my vacation plan outlined for 2019. In short, the dates, place and a brief overview of itinerary. Detailed itineraries in Google doc will be linked here in a few days.
Engineering Context switch for engineers Context switch of an engineer usually comes on the top when we're talking of productivity. The problem, unlike CPU, humans can't do context switches by simply putting things in RAM, etc. That's a
Engineering Autoscaling, I'm working. don't kill me! Problem: When you've an autoscaling group in AWS scaling in (reducing capacity), some of your instances get terminated. AWS usually terminates the oldest first. The problem is, sometimes, we might not want to
