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.
Stories 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.
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: Balancer takes a lock Identify chunk
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.
Engineering Kafka rebalancing topics between brokers To discard an old set of kafka brokers and migrate them to newer set, Get the existing list of topics. Make a file topics-to-move.json with contents in the format: {"topics"
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
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:
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(
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
Stories 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
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
Engineering Quick AWS commands Uploading custom ssl certificate to AWS Cloudfront: aws iam upload-server-certificate --server-certificate-name <Certificate name> --certificate-chain <interim-certificate> --private-key <private-key-file> --certificate-body <certificate-secret> --path /cloudfront/
Engineering Few Logrotate Configs Logrotate is a linux utility which rotates files upon certain conditions.If it's not installed, you can do via apt-get install logrotate or yum install logrotate The usual tricky part of logrotate is
Engineering Rolling update on AWS Autoscaling AWS autoscaling groups let you manage a set of instances and scale them in or out, based on various parameters. Deployment strategy: To launch new instances with latest code version and deprecate old
Stories Moonrise Alone in the misty woods, the river flow being echoed, he stood on the cliff watching the distant stars fade away in brightness. The golden line on the sky made itself vivid, cleared
Stories One Last Letter Staring at stars, a voice whispered, “Did you get response yet?” I held my tears, kept my voice low, took a heavy breath. I tricked my mind to travel a few years ago.
Engineering My RAM :O :( At it's core, Linux has a simple philosophy, "Everything is a file" Linux communicates with everything including Block devices, Serial devices, Network devices as if they're files (same as one'd open
Engineering Resizing disk size without restarting process Often, we end up adding disks to increase space. However, we have to mount them on a new partition. Change our data modules everywhere. Ex: Mongo disk is originally on /dev/sdb1. Now,
Engineering linux-debugging Debugging in Linux! Who is the guy talking? What’s Debugging in DevOps? Usual Methods Usual things Tools strace uptime dstat top/htop/atop perf opensnoop/execsnoop/iolatency. telnet netstat lsof Basic Intermediate
Engineering checking ulimit To check ulimit (which generally causes too many files open error), don’t use ulimit -n ulimit of each process varies and when you issue the command, it’s issued by shell you’
Engineering Edit file vi, not opened by sudo Opened a file in vi without sudo. Edited some stuff, realized you can't save it. You close the file, open with sudo, redo the edits. How about, switching to sudo while vi is
Engineering Debugging git slowness Here's the command to understand where is it running slow and what's happening at each step. set -x; GIT_TRACE=2 GIT_CURL_VERBOSE=2 GIT_TRACE_PERFORMANCE=2 GIT_TRACE_PACK_ACCESS=
Engineering Deleting a node from Chef On workstation knife node delete --yes NODENAME knife client delete --yes NODENAME On client yum -y remove chef rm -rf /var/chef rm -rf /etc/chef rm -rf /opt/chef Bootstrap again, if
Engineering mysql config check mysqld --help --verbose will show variables that'd be loaded if process mysqld (re)started. This will also throw errors if config file /etc/my.cnf is invalid. To get variables of current running
