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 terminate an ec2 instance because it is running a job. While we've handled our application architecture to
Engineering👨💻 Configuration Drift — Tech or Culture? Opinion on how to handle configuration drift and identifying the problems.
Thoughts 💭 How do you manage budget for travel? After the posts on how I manage leaves (GHOST_URL/holidays-and-travel/) and the reality of backpack (GHOST_URL/the-exhaust-of-backpack/), a few have asked about budget. I'd not listen to me when it comes to finances. I suck at them and I've no concept of savings. Here are a few generic
Stories 📜 The exhaust of backpack While many of us wonder at the idea of backpacking to travel and relax our body and mind for a few days, the bitter truth is travel is exhausting. If anything, more exhausting than going to the office on a 9 to 5 shift every day. Let’s begin with
Engineering👨💻 nginx rewrite to https This block redirects all http requests to https ``` server { listen 80; if ($http_x_forwarded_proto != "https") { rewrite ^(.*) https://$host$1 permanent; } }```
Stories 📜 Oh shit, I'm 26 now! With my nose sneezing unconditionally, I had a pill and fell asleep by 11pm. Unusual of me. A few minutes into a dream I no longer remember, I had my phone buzzing, and the person on the line says, "Happy Birthday". My semi-asleep brain processed it a little lazily and
Thoughts 💭 How do you get so many leaves? "How do you take so many vacations while working for a company full time?" it's the question I always get from various people and in this, I'm showing how I do it. As you know, it's working great from me.
Thoughts 💭 Inability to sell self The cloak of modesty ripping off what I've.I purchased a cloak long time ago, and wear it as modesty. Living under the cloak almost all my life, resulted in a low self-esteem. When I looked back, I realised it could be apparently irreversible. I fail at selling myself. The
Engineering👨💻 Mongos balancer process Problem Statement: Whenever mongos balancer is running, the cluster gets insanely slow.. Latencies are back to normalcy immediately if the balancer stopped. Mongos balancing process for reference: 1. Balancer takes a lock 2. Identify chunk to migrate. This is based on several criteria 3. Send command to "Source" shard. 4.
Stories 📜 Small talk on modern love She: It's love that we lack. No matter how well we do, unless we don't have someone to love and get loved back. This feeling shall persist. Me: Yeah.. we all need someone..who awaits your call, excited for little things, surprises you, who takes your joy in your success,
Engineering👨💻 Mongo Operations This is with assumption of you're using either AWS or Google Cloud. Also, this isn't elaborate purposely. Installation on Centos/Amazonlinux: * Create a new repo file: sudo vi /etc/yum.repos.d/mongodb-org.repo * Drop in following contents in the file: [mongodb-org-3.2] name=MongoDB Repository baseurl=https://repo.mongodb.
Engineering👨💻 Kafka rebalancing topics between brokers To discard an old set of kafka brokers and migrate them to newer set, 1. Get the existing list of topics. 2. Make a file topics-to-move.json with contents in the format: {"topics": [{"topic": "sampleTopic_A"}],"version":1} 3. In any of the kafka brokers, run the following command ./$PATH_
Engineering👨💻 Kafka ops: Migrating from ec2 classic to VPC A few strategies for migrating Kafka to new cluster from classic to VPC: Strategy 1: Launch a new cluster (Zookeeper+Kafka brokers), point producers to new cluster and drain the older cluster once consumers are also pointed to new cluster. pros: * Existing cluster isn't impacted, and hence helps in easy
Engineering👨💻 Most interesting outage postmortems > How few services of hostedgraphite not hosted on AWS, got affected by AWS outage: https://blog.hostedgraphite.com/2018/03/01/spooky-action-at-a-distance-how-an-aws-outage-ate-our-load-balancer/ > How codespaces had to shutdown their business after loss of data: http://www.itwriting.com/blog/8498-resilience-is-not-backup-how-codespaces-com-lost-its-data-and-its-business.html > TravisCI truncated production database by human error: https://blog.travis-ci.
Engineering👨💻 mongodb pause ttl The following command can be used to pause mongodb ttl for 86400 seconds (1 day) db.adminCommand({setParameter:1, ttlMonitorSleepSecs: 86400}) The following to disable TTL and enable it later on: db.adminCommand({setParameter:1, ttlMonitorEnabled:false});
Hibernate+Spot fleet on AWS AWS has been constantly working on solutions to make computing less expensive and latest development on spot instances with option to hibernate has been an incredible feature. In short, we can run stateful applications on spot with affordable downtime. Here’s a quick walkthrough of how to use it: Prepare
Scribblings The loner This is a scribbling I've done, sitting on marine drive Mumbai the other night. I wanted to keep the image as it is, instead of typing it or editing it. Please give your feedback below/twitter/whatsapp/anywhere. :)
Stories 📜 Sar Pass lapse Nowhere close to infinity, we were at 13,800 ft. A few foot steps on the canvas of snow, imprinted memories deep within, lived an experience. It was life beyond comforts. Limits pushed themselves harder everyday, and one fine morning, we're above the limits. An embarking journey started off from
Engineering👨💻 Quick AWS commands Uploading custom ssl certificate to AWS Cloudfront: aws iam upload-server-certificate --server-certificate-name --certificate-chain --private-key --certificate-body --path /cloudfront/
