$ cat post/debugging-the-monday-blues-in-2008.md

Debugging the Monday Blues in 2008


February 11, 2008. The date when Git was making its first major push into my life as a platform engineer. I had just joined a startup that was on a mission to change the game with cloud-based software solutions, and we were using a mix of technologies—AWS EC2 for our backend, PostgreSQL for databases, and Git for version control. Little did I know, this month would bring some challenging weeks full of technical headaches and team dynamics.

The Monday blues are real. Especially when your app is down and you’ve just woken up to another one of those “OMG the site went down again” emails at 6 AM. Today was no different. My alarm clock rang early, and I begrudgingly started my laptop, navigating through the usual morning rituals before diving into the logs.

After a series of failed attempts to pinpoint what exactly had gone wrong, I decided to take a step back and review the recent changes we made. The last major release included some refactoring in our Django app that was supposed to optimize queries, but something must have slipped through the cracks because now every request was timing out.

I dove into the PostgreSQL logs, which were buried deep within a directory of scripts, config files, and database backups. Scanning for errors, I noticed a pattern: could not send SIGTERM signal followed by FATAL: database process received unexpected termination. Suddenly, it clicked—EC2 instances weren’t shutting down gracefully due to the way we were handling our shutdown signals.

This was the first time I really dug into AWS’s auto-scaling group configurations. It turns out that our script for terminating instances wasn’t robust enough to handle the termination request from EC2 properly. A quick fix involved enhancing our scripts to send a SIGKILL after waiting for a few seconds, which is obviously not ideal but got us running again.

That evening, we had a team meeting where I laid out what went wrong and how to prevent it in the future. We discussed whether we should use CloudWatch alerts or improve our local alerting system, but settled on just tightening up our deployment process documentation. It’s funny how something as simple as a better script can save hours of frustration.

On another front, I was also trying to wrap my head around Hadoop and see if it could be leveraged for any data processing tasks we had. The idea was compelling—map-reduce seemed like magic compared to our current SQL queries. However, setting up a Hadoop cluster on AWS proved more challenging than expected, with issues related to network latency and file permissions.

But hey, that’s the beauty of it all. Every challenge is an opportunity to learn something new. That night, I ended up staying late at the office, wrangling virtual machines and trying out different configurations until everything was just right. By morning, we had a working setup that could handle our data processing needs efficiently.

Looking back, 2008 was definitely a year of transitions. Git adoption was picking up speed, but with it came a lot of trial and error as we learned to manage branches and merges effectively. The cloud vs. colo debates were ongoing, with many companies still weighing the pros and cons. And amidst all that tech talk, the economic crash was hitting hard, affecting hiring patterns and pushing teams to be more efficient.

That morning debug session felt like a microcosm of what the year would bring—moments of frustration followed by breakthroughs, and the constant reminder that we’re always learning. For now, I’ll head back to my desk, armed with newfound knowledge and ready for whatever comes next in this ever-evolving tech landscape.