BFS

Linux enthusiast | Learning daily — Breaking, fixing, and securing systems.

[BFS @bfsapproach]

#Linux #Windows #DevOps #Cybersecurity #SysAdmin #TechTwitter #OpenSource #LinuxLife #TechCommunity #ChooseYourSide

[BFS @bfsapproach]

Reading about ARP taught me nothing. Making my own ARP table go stale did. My networking repo: each lab has a break script, a fix script, a drill and a postmortem. ARP → DNS → a reverse proxy CTF.

[BFS @bfsapproach]

@vibeonX69 Proton

[BFS @bfsapproach]

@codewith55 Cybersecurity

[Tech Fusionist | Kushal Gangil @techyoutbe]

Plot twist: The hardest part of AI isn't AI. It's infrastructure...

[BFS @bfsapproach]

❤️

[Mashood K @fromcodetocloud]

Bro skipped ABCs and went straight to AWS

[BFS @bfsapproach]

openSUSE vs Fedora vs Rocky Linux 👀

Which one wins for DevOps and why?

Let's debate. #Linux #DevOps

[BFS @bfsapproach]

@Taniyatweets_ Fedora

[Mischa van den Burg @mischavdburg]

POV: you’re a plebeian flying business class for the first time in your life

[BFS @bfsapproach]

@twtayaan Stop this

[Mischa van den Burg @mischavdburg]

Linux is the gateway to a successful tech career because it is used absolutely everywhere.

[BFS @bfsapproach]

doing small, real labs will take you much further than trying to memorize 100 commands in one sitting.

[BFS @bfsapproach]

breaking something teaches more than reading documentation.

[Tech Fusionist | Kushal Gangil @techyoutbe]

https://t.co/NDMMOFXOoH

[Mischa van den Burg @mischavdburg]

𝗬𝗼𝘂𝗿 3 𝗰𝗲𝗿𝘁𝘀 𝗮𝗿𝗲 𝗻𝗼𝘁 𝗴𝗲𝘁𝘁𝗶𝗻𝗴 𝘆𝗼𝘂 𝗽𝗿𝗼𝗺𝗼𝘁𝗲𝗱.

The story everyone believes is simple. Stack enough badges and the title finally changes.

So you grind the CKA. You pass. Nothing moves.

Here is the part nobody tells you. The CKA is a live terminal exam. It does not test Kubernetes trivia. It tests whether you can move around a Linux box under pressure.

I have watched certified engineers freeze on it. Not because they forgot a kubectl flag. Because a pod was stuck Pending and they could not read a journalctl log, check a mount, or follow a process to find what actually broke.

𝗧𝗵𝗲 𝗰𝗲𝗿𝘁 𝗶𝘀 𝗮 𝗿𝗲𝗰𝗲𝗶𝗽𝘁, 𝗻𝗼𝘁 𝗮 𝘀𝗸𝗶𝗹𝗹.

What the exam (and your next manager) is really checking:

→ Can you trace a failing service through systemd
→ Can you reason about permissions, mounts, and namespaces
→ Can you debug at the layer where the problem actually lives

That is Linux. Kubernetes just orchestrates what Linux already does. (The Crafters who get unstuck are always the ones who went back and fixed the foundation first.)

A badge says you studied. A broken box you fixed says you can do the job.

𝗦𝘁𝗼𝗽 𝗰𝗼𝗹𝗹𝗲𝗰𝘁𝗶𝗻𝗴 𝗽𝗿𝗼𝗼𝗳 𝗼𝗳 𝘀𝘁𝘂𝗱𝘆𝗶𝗻𝗴. 𝗦𝘁𝗮𝗿𝘁 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗽𝗿𝗼𝗼𝗳 𝗼𝗳 𝗱𝗼𝗶𝗻𝗴.

What is one thing your certs say you know, that you would still struggle to debug live at 2am?

Start here: https://t.co/yRgDLNdaOA

[Mischa van den Burg @mischavdburg]

𝗙𝗼𝗿 2 𝘆𝗲𝗮𝗿𝘀 𝗟𝗶𝗻𝘂𝘅 𝘄𝗮𝘀 𝗷𝘂𝘀𝘁 𝗰𝗼𝗽𝘆-𝗽𝗮𝘀𝘁𝗲𝗱 𝗺𝗮𝗴𝗶𝗰.

I ran commands I found on forums and prayed they worked.

When they didn't, I had no idea why. So I reinstalled. Again.

Then one night in 2019 my laptop wouldn't boot. Black screen, a blinking cursor, nothing else.

No tutorial for "my exact machine at 1am." Just me and a recovery shell.

I typed journalctl -xb for the first time. Not because I was clever. Because I was out of options.

And the system just... told me. A failed mount. One wrong line in fstab from an edit I'd made hours earlier.

I fixed the line. It booted.

(I sat there a little stunned. The thing I'd been afraid of had been explaining itself the whole time. I just never knew where it kept its diary.)

That was the night it stopped being magic and started being a machine I could reason about.

𝗧𝗵𝗮𝘁 𝘀𝗵𝗶𝗳𝘁 𝗶𝘀 𝘁𝗵𝗲 𝘄𝗵𝗼𝗹𝗲 𝗷𝗼𝗯.

Every "scary" layer after that (containers, then Kubernetes) was just the same machine wearing a costume. Logs. Processes. Permissions. Mounts. The fundamentals don't move.

Most people quit one bad boot before this click. They think they're not smart enough. They're just one read-the-logs habit away.

What was the moment a system stopped feeling like magic for you? Let me know :)

[BFS @bfsapproach]

@mischavdburg You don't truly learn Linux by reading commands. You learn it by breaking things, troubleshooting them, and fixing them. Every failure teaches something no tutorial can.

[Mischa van den Burg @mischavdburg]

𝗠𝘆 𝗵𝗼𝗺𝗲𝗹𝗮𝗯 𝗴𝗼𝗶𝗻𝗴 𝗱𝗼𝘄𝗻 𝘁𝗮𝘂𝗴𝗵𝘁 𝗺𝗲 𝗺𝗼𝗿𝗲 𝘁𝗵𝗮𝗻 𝗮𝗻𝘆 𝗰𝗼𝘂𝗿𝘀𝗲

A few months into my homelab, everything went dark.
DNS stopped resolving across the whole cluster.

No course had prepared me for that exact failure.
That was the point.

I spent a full evening with nothing but logs and a hypothesis.
It turned out one node was handing out the wrong resolver, and every pod downstream trusted it.

I was annoyed for an hour.
Then I realised I had just lived a real incident.

What that night actually taught me:

→ The error message is rarely the root cause
→ You debug systems by narrowing, not by guessing
→ Writing down what you tried is half the fix
→ Calm beats clever when everything is red

That story got me further in interviews than any line on my CV.

You can't download this. You have to break something you care about.

Enjoy this? Repost it to your network and follow for more.

[BFS @bfsapproach]

The work you do when nobody is paying attention is often the work that changes your life.

[BFS @bfsapproach]

@officialladi_T Windows actually