Costin Ștefan

Recently I saw something that I was missing for a while now, a method to share short ‘posts’ with interesting things.

If you’ve visited the site before, you might notice things look a bit different.

My website is now part of 512kb.club - a curated list of sites whose total size is under 512KB.

So recently I had to play with BGP after a very long time.

In this one I will show you how I improved the performance of a WordPress site using CloudFlare Caching and PHP FPM pool settings.

As part of my freelancing business, I recently had to fix a space issue on a Windows machine.

So I had a really interesting issue recently where one of our app devs was complaining that he can’t get the container ID from within the container in a new environment.

So recently Microsoft announced they’re offering ChatGPT o1 model free to their Copilot program.

So it may happen that you have a Kubernetes or Openshift deployment and a pod does not want to start and remains in Pending state.

If you’re working on fixing an issue on a server and want to be notified as soon as this is reachable, you can run an audio alert.

So I’ve tried to configure a self-hosted Roundcube container and set up an iCloud account with a custom domain address.

For today’s post I will walk you through the process of setting up a web-app testing environment automatically using ansible.

In case you want to run a quick performance test (in simple terms of access to DB) on a PostgreSQL server, this can be done quickly through a python module called psycopg2.

This is a quick one, I had to get the SN of my external screens recently and I thought I should share the powershell command I used for this task.

This one will be a quick one.

Recently I had to fix a vCenter Server that was stopped working.

Since I’ve transformed this website in a Blogging as a Service (BaaS) thing with the help of Github Actions and Github Pages my life was much easier.

Recently I had to fix a kubernetes cluster which had its IP addresses changed.

After a period on which I focused more on work, I’ve decided I need to change a bit the blog. 9 months ago I’ve migrated my blog from DigitalOcean to Github Pages.

My name is Costin Ștefan and this is my blog.

Recently I had to add more NTP servers to a HP 3PAR 7200c storage.

If you’re an IT professional that has to deal with old systems that have self-signed certificates you most probably had to add exceptions to your browser many times.

Have you ever wanted to just start a Webserver in a second, for a quick and dirty task but didn’t want to install a full LAMP/LEMP stack?

On F5 BigIP LTM you can create a SSL profile even if you don’t know the private key passphrase This workaround can be applied only if you’ve used the private key on the same F5 BigIP node already.

So recently I’ve encountered the error in the subject.

ctrl+alt+end

Recently I had this issue that ate a big part of my day.

I’ve stumbled upon this great list of materials you can use to get started on IT, and Networking in particular.

Here’s another cool and helpful thing I just discovered that might help you stranger of the internet.

After having some interviews where I’ve been asked about routing on linux solutions, I’ve decided to playaround with Quagga.

Just got a used Catalyst 3500-XL switch and don’t have credentials?

In case you will need it, here’s a thing that helped me out once.

So, it seems that finally Cisco decided to introduce a shell for their routers.

I’ve recently stumbled upon a great course on coursera which can teach you how to learn in today’s world.

So, let’s assume you are a network engineer that has to configure something on a new Cisco switch/router.

I’ve recently moved my website from AnchorCMS to Jekyll.