Devops

Correction 2023-07-02: fix homelab specs and corresponding AWS EC2 instance class (it’s actually 32GB RAM, not 64GB) Congratulations, you managed to successfully deployed a few services on kubernetes! But this is not the end 👀. Unfortunately money doesn’t grow on trees, and if you can’t justify your infra expenses, finance department won’t be happy. If you’re using Terraform, you can use Infracost to create a cost report. Pretty nifty. But what about kubernetes? Given cost reporting is a basic feature, kubernetes is no exception. ...

Background Ever wonder how websites (and everything in between) work? Chances are you can create a project running on your local machine. It works as you expected, but to let other people access it, you have to “deploy” it. For many years, to support a lot of request volumes you need to run your applications in a data center. These days this setup is known as on-premise. ...

Raise your hands if you normally have to send .env files to your team members so they can start a project in dev environment. While there is nothing wrong with this approach, it could introduce a lot of security risks, namely sharing secrets via plaintext protocol. Sure, you can share them on Slack, Discord, etc. But unless it’s encrypted with your own keys, it could be leaked if the said communication platform were to be breached. ...

Scaling, the dreaded word among developers, because this means more complexity. But why do we need scaling? Imagine a super busy corner store. During early mornings, there might not be a lot of customers, so one cashier might be enough to handle all customers. But during afternoons or evenings, more customers would flock to the store, and our only cashier couldn’t checkout fast enough, and this means losing potential customers. ...

For many years, installing a package on linux means either: Compiling a binary from source, then install it. -> I think we know why this didn’t catch on for the mass. Downloading a compiled binary for your system’s architecture and platform. -> This requires you to also move the executable to something like /usr/local/bin otherwise it won’t be discoverable throughout the system. Using system’s package manager: apt, apk, yum, brew, etc. -> Yay finally something that’s easy to use. Phew! Then the dot-com era happened, and the digital transformation, you name it. This was before cloud, so companies set up their own data centers and have to administer and maintain the servers themselves. And it’s not fun if you have to perform the same machine configuration for the whole fleet. This problem was solved by tools like Ansible, Chef, Puppet, etc, to set up a machine’s configuration en masse. ...