But is it perfect to replace my day-to-day machine? Heck no. I run containers and kubernetes and what not. So the web vscode might be a really good option.

I got the khadas edge a year or so ago and I've not been able to figure out a good use case for it, I've always wondered what can I do with it, since it's supposedly a full blown Desktop PC.

With the 16GB ram and an octa-core processor, android is a good option for this but regardless it's an overkill. So I installed something called FydeOS.

FydeOS is an interesting project, it's a chromeos based project, which supports Android Apps as well as LXC containers. However, the default version of fydeOS that I have didn't seem to be stable. The Spotify app would crash the entire system. And notion felt a bit slow.

Moving on I saw that Khadas which comes with it's own Bootloader has something called as OOWOW, which is it's own bootloader and has support to install new OSes.

One of those is Android 13.

So I bit the bullet, installed and Android 13 and so far it's been flawless, I do intend to figure out how I can sort of hack around with Android.

Android is interesting, it's hackable and comes with ton of support for things like gamepad support, but it cannot run containers :( which is what I wanted to do. So now I'm thinking of what next is possible in this path, but I wanted a small tablet on my desk to use as a Notion/Gaming device.

Gaming on Android does work.

The experience is quite good too. No lags or stutters here, this device can handle Genshin Impact too, I wonder if I can install Wuthering Waves etc.

I also tried out Google voice and it does make the device handsfree, until it can't recognize my voice, the Khadas edge 2 has a Mems microphone too.

This is it for this post, I will probably switch to linux back and see if I can get this to work somehow with a touch-friendly linux distro.

It's a nifty little device, and with 1 GB of ram everything was possible from running a Pi-hole DNS server to running a Python Script to play audio back in 2016, my StackOverflow question still exists here!

I initially got it for learning electronics but at that time the pi was quite expensive so I had to find a way to get it.

However, after many years, I somehow blew it up, I actually don't know how that happened, well I was too sleepy to remember but I somehow gave the 3v GPIO pin a 5v current while trying to get the UART to work and now my raspberry Pi is stuck in this state

Where both the Green and the Red light are on, after reading many articles about the polyfuse blowing up and waiting several days to see if my Pi would resurrect I think it's finally time to say goodbye. Unless well I find a way to fix this somehow.

It's been a good buddy for about 8 years, and a small yet unknown mistake on my end caused it to blow up...

I've done a lot of learning on this Pi, half of which, I've never documented.

So long Pi2b

The last few random messages on my minicom terminal

I've been a fan of what Jeff Geerling does for a long time! Honestly was glad to be able to help, I even got a mention in his blog post!

So let's begin this article!

To go further from here, I first logged into my Vision Five 2 board.

Then I created a Python virtual env.

python -m venv venv
python --version

When I initially tried pip install ansible after creating a virtual environment, it failed.

...
running build_ext
      running build_rust
      error: can't find Rust compiler
...

This gave me a hint, I need to install the rust compiler

# Ubuntu/Debian derivatives
sudo apt install -y rustup
rustup install stable
rustc --version

This was all good, and I went on ahead with running the pip command again.

But that didn't work either

run pkg_config fail: Could not run `PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 pkg-config --libs --cflags openssl`
        The pkg-config command could not be found.

        Most likely, you need to install a pkg-config package for your OS.
        Try `apt install pkg-config`, or `yum install pkg-config`,
        or `pkg install pkg-config`, or `apk add pkgconfig` depending on your distribution.

        If you've already installed it, ensure the pkg-config command is one of the
        directories in the PATH environment variable.

So I once again, went ahead and installed pkg-config

## Ubuntu/Debian derivatives: 
sudo apt install -y pkg-config
## Archlinux: 
sudo pacman -S pkg-config

Then finally, ansible was built! by running pip install ansible

Building wheels for collected packages: cryptography
  Building wheel for cryptography (pyproject.toml) ... /
done
  Created wheel for cryptography: filename=cryptography-42.0.8-cp312-cp312-linux_riscv64.whl size=1497465 sha256=2effb0faf4641f1e0f958611dc3d74117c0acb07ffbef09813563e9aa406321d
  Stored in directory: /home/user/.cache/pip/wheels/3d/72/97/171f6cd6eaa8c4f755fc233cbd14fe300a71acff1187ca08d5
Successfully built cryptography
Installing collected packages: resolvelib, PyYAML, pycparser, packaging, MarkupSafe, jinja2, cffi, cryptography, ansible-core, ansible
Successfully installed MarkupSafe-2.1.5 PyYAML-6.0.1 ansible-10.1.0 ansible-core-2.17.1 cffi-1.16.0 cryptography-42.0.8 jinja2-3.1.4 packaging-24.1 pycparser-2.22 resolvelib-1.0.1

[notice] A new release of pip is available: 24.0 -> 24.1.1
[notice] To update, run: pip install --upgrade pip

It's been a while since I've written something, so hopefully this helps me get back into writing.

Further, I've compiled a gist for this

https://gist.github.com/afro-coder/2b1f96ca31880fb66795b6dc15763e78

Feel free to suggest edits etc.

The concept I'm talking about is called "Connection Termination", there could be various names for this. I recall hearing about this when I was working on writing the Developer guide for Ingress Nginx, I knew what it meant but never knew the term for it.

In a nutshell "Connection Termination" happens when you interact with Proxies(Even an AWS application load balancer is a reverse proxy), I know of three proxies, Envoy, Nginx, and HaProxy.

The image below shows you what I mean when I say connection termination(No this doesn't mean you're disconnected from the proxy)

Proxies are used to route connections to the actual applications using a single entry point. More often these are called "Reverse Proxies". When you initiate a connection to a reverse proxy your connection doesn't go directly to the application, the proxy will create a new connection to the actual service, this is one of the reasons why you'll see the Proxy IP in the application logs and not the client's actual IP.

This is quite useful as it allows you do to a lot of things, for example, you can add headers to the request, or maybe you want to rate-limit a request.

In Envoy Proxy you have something called Filter Chains these chains can be run when a request reaches the proxy, things like using an external authentication server, rate limiting, adding a wasm filter, modifying a request header, or adding headers.

A few things that most people ask on forums, discord, and most of the places is how do I get the actual client IP in the application logs, To be honest, this isn't needed since you can use the Proxy Logs, but sometimes you have CloudFlare in front of your application, Cloudflare is also a Reverse Proxy which connects to your application. You can instruct Cloudflare to send the IPs using the headers it provides.

This piece of information is really helpful when you're debugging as a single connection can be terminated at multiple places during its lifecycle. Figuring out where the termination occurs helps debug microservices.

A small homework from this Article is to search the headers that Cloudflare or any proxy uses to send the actual client IP.

Until Next time! I wish I could write more frequently but I'm bad at a lot of things including time management. I hope this helps you debug your issues faster!