Starting my RHCA journey — OpenShift, Bash, Python & GovTech systems. No fluff. Just weekly labs, public learning, and GitHub proof. Follow for: - OpenShift & Kubernetes labs - Bash/Python scripting - Real-world infrastructure #RHCAJourney #Kubernetes #Linux #DevOps #OpenShift

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Common Networking Protocols and Ports

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The Only Linux Command List You'll Need to Bookmark: Daily Heroes: • ps aux | grep {process} - Find that sneaky process • lsof -i :{port} - Who's hogging that port? • df -h - The classic "we're out of space" checker • netstat -tulpn - Network connection detective • kubectl get pods | grep -i error - K8s trouble finder Log Warriors: • tail -f /var/log/* - Real-time log watcher • journalctl -fu service-name - SystemD log stalker • grep -r "error" . - The error hunter • zcat access.log.gz | grep "500" - Compressed log ninja • less F - The better tail command Container Whisperers: • docker ps --format '{{.Names}} {{.Status}}' - Clean status check • docker stats --no-stream - Quick resource check • crictl logs {container} - Raw container stories • docker exec -it - The container backdoor • podman top - Process peek inside containers System Detectives: • htop - System resource storyteller • iostat -xz 1 - Disk performance poet • free -h - Memory mystery solver • vmstat 1 - System vital signs • dmesg -T | tail - Kernel's recent gossip Network Ninjas: • curl -v - HTTP conversation debugger • dig short - Quick DNS lookup • ss -tunlp - Socket statistics simplified • iptables -L - Firewall rule reader • traceroute - Path finder File Jugglers: • find . -name "*.yaml" -type f - YAML hunter • rsync -avz - Better file copier • tar -xvf - The unzipper (yes, we all google this) • ln -s - Symlink wizard • chmod x - Make it executable Performance Profilers: • strace -p {pid} - System call spy • tcpdump -i any - Network packet sniffer • sar -n DEV 1 - Network stats watch • uptime - Load average at a glance • top -c - Classic process viewer Git Essentials: • git log --oneline - History simplified • git reset --hard HEAD^ - The "oops" eraser • git stash - The work hider • git diff --cached - What's staged? • git blame - The "who did this?" resolver Quick Fixes: • sudo !! - Run last command with sudo • ctrl r - Command history search • history | grep - Command time machine • alias - Command shortcut maker • watch - Command repeater

DNS - All You Need to Know

Passed the RHCE!!! I’ve hit all my goals before end of July!!! Now it’s time to grind out this Openshift.

The next for years for those who master Kubernetes is going to be transcending .

Openshift AI demand is gonna be huge, a vendor I work with is offering a bounty to pay people to learn.

🐚 Master the Bash read command in 60 seconds! Basic usage: read name age echo "Hello $name, age $age" Interactive prompts: read -p "What's your name? " name read -s -p "Password: " pass # hidden input read -t 5 -p "Quick answer: " ans # 5sec timeout

A Red Hat partner I work with told me the demand for Openshift Virtualization is growing quick so they need me to learn it. On top of that, they are going to pay me a bounty for getting the cert. Kubernetes based products are about to boom with new AI trends.

Linux commands I used 99% of the time: 𝗕𝗮𝘀𝗶𝗰𝘀: 1. `man` - Skim through manual for better understanding. 2. `nano` / `vim` - Use nano for basic editing, vim for advanced editing. 3. `ls -l` - List files with detailed info. 4. `ssh` - Connect to remote machines securely. 5. `df` / `du -hs *` - Check disk space usage. 6. `chown` / `chmod` - Change ownership and permissions of files. 7. `dig` - DNS lookup to find IPs of hostnames. 𝗘𝘃𝗲𝗿𝘆𝗱𝗮𝘆 𝗨𝘀𝗲: 1. `history` - View command history. 2. `cd -` - Switch to the previous directory. 3. `xargs` - Build and execute commands from input, with parallel execution support. 4. `pstree -p` - Display the process tree with process IDs. 5. `pgrep` / `pkill` - Find and signal processes by name. 𝗣𝗿𝗼𝗰𝗲𝘀𝘀𝗶𝗻𝗴 𝗙𝗶𝗹𝗲𝘀 𝗮𝗻𝗱 𝗗𝗮𝘁𝗮: 1. `find . -iname '*file*'` - Locate files by name. 2. `grep` / `ack` / `ag` - Search within files, with ag being the fastest. 3. `awk` / `sed` - Manipulate and format text. 4. `sort` / `uniq` - Sort and find unique lines. 5. `cut` / `paste` - Extract or combine columns of text. 𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝗯𝘂𝗴𝗴𝗶𝗻𝗴: 1. `top` / `htop` - View system performance and resource usage. 2. `netstat -lntp` - List all listening ports and associated processes. 3. `dstat` - Combined system stats view. 4. `strace` - Trace system calls and signals. 5. `lsof` - List open files and associated processes. Without Linux, DevOps life is incomplete. P.S. Which one did you use the most ? 47K read my TechOps Examples newsletter: techopsexamples.com/subscrib… What do we cover: DevOps, Cloud, Kubernetes, IaC, GitOps, MLOps 🔁 Consider a Repost if this is helpful

Like my guy @thedatabunny says… At the end of the day, the day has to end… Learn Linux.

Passed the new version of the CKA exam with a good score. 1 more cert left until all Openshift for the rest of the year.

I’m doing my research on Government Contracting and BRUH!! I found out how to find what was awarded to companies on old contracts and even current ones and the numbers are insane! Even for the Government Contracting company I work for now! There’s so much bread out here!!

There are so many smaller contractors out here being awarded 8 figure contracts…this is where the opportunities are

IAM is the closest thing to a cheat code in tech right now. Everyone else is chasing Cloud Security, AI, and DevSecOps. But IAM quietly runs in the background—supporting every single one of them. And here's the kicker: Less competition Way less stress than SOC work Straight line to six-figures (and beyond) Tech jobs reward necessity, not hype.

I’m still blown away by the offer I received—$180 an hour to teach an OpenShift class for employees at a major, well known bank. I’m not quite there yet, but the opportunities are growing rapidly.

Seeing more Openshift work growing in DoD work is a good sign for me.