Engineering Terraform modules What're terraform modules? Module is an abstraction for multiple resources which can be reused. Let's say we define our website service with the following layers in AWS: s3 for static resources (html, css,
Engineering clear chef nodes: quick and dirty Note: Intended for self reference. We've to delete clients/nodes from chef when an ec2 instance terminates. We've followed the pattern of using instance id as chef node id. And the following script
Engineering How long does it take? "It depends." Yes, it depends. We never know how long does a task take with accurate assumption. But that's not helpful. Estimates matter. If time isn't a factor in whatever humans
Engineering Continuous integration, delivery and deployment Scenario: Mono-repo with multiple projects hosted on github.. We need a CI/CD setup for this, whenever a pull request is raised. Inputs: Code hosted on Github Continuous Integration/CI server: CI server
Stories 26..err..27?!? I'm 27 years old. I've counted the years, from my date of birth till today.. we all do this every year despite being fully aware of our age, don't we? As if we
Engineering Security group rule as a resource An ongoing document on terraform clean practices I follow. Type 1: Ingress defined inside the same resource as security group. resource "aws_security_group" "sample-sg" { name = "sample-sg"
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.
