Mudasir

DevOps Engineer | Building Scalable & Automated Solutions
CCNP | 3 x AWS | 1 x Azure | Palo Alto | NSE 3 | Terraform | Jenkins
I love talking about technology!

[KSA Expats @ksaexpats]

Majestic Tawaf scene at the Grand Mosque.

[Mudasir @beingmbh]

Ever typed ll a thousand times and forgot ls -la is the real command?
Aliases in Linux = your daily sanity saver.
From git status → gs to kubectl get pods → kgp – if you type it often, alias it.
DevOps life is just automating yourself out of a job, one alias at a time. #Linux

[Mudasir @beingmbh]

In Kubernetes, requests guarantee the minimum CPU/memory a container gets, while limits cap the maximum it can use.
Set requests too low → instability
Set limits too high → resource hogging
Balance is key for performance & efficiency
#Kubernetes #DevOps #CloudComputing

[Mudasir @beingmbh]

I just published Getting Started with Ansible on AWS EC2 (Part 1): Setup & SSH Communication https://t.co/XW27WjRHnf
#Ansible #AWS #EC2 #DevOps #InfrastructureAutomation

[Julian Goldie SEO @JulianGoldieSEO]

Claude AI FULL COURSE 5 HOURS (Build & Automate Anything)

[Google India @GoogleIndia]

Wishing you a month of peaceful sehri mornings, comforting iftars, and time well spent with loved ones. Ramadan Kareem 🌙✨

[Julian Goldie SEO @JulianGoldieSEO]

N8N FULL COURSE 5 HOURS (Build & Automate Anything)

[CNCF @CloudNativeFdn]

🚨 Reminder: Ingress NGINX maintenance ends March 2026.

This isn’t new—but it is urgent.

@Dixie3Flatline & @TabbySable joined @SylvainKalache on @TheLandscape__ to drive the message home: start your migration now.

🎙️ Watch: https://t.co/5b5WGgps00

#Kubernetes #CloudNative

[Ben Dicken @BenjDicken]

The write-ahead log (WAL) is both how databases commit fast and how they safely recover from crashes.

Outside of B-trees, it's probably the most important structure in Postgres and MySQL.

(it's called the "redo log" in MySQL-land)

[Akhilesh Mishra @livingdevops]

Production Kubernetes cluster is down. Your manager is asking for updates every 5 minutes.

Here’s your step-by-step troubleshooting playbook:

Step 1: Get your bearings
Check where you are: kubectl config current-context
See all contexts: kubectl config get-contexts
Switch if needed: kubectl config use-context name
List namespaces: kubectl get ns

Step 2: See the big picture
Node health: kubectl get nodes
All pods: kubectl get pods -A
Recent events: kubectl get events –sort-by=.metadata.creationTimestamp -A

This tells you if it’s a cluster-wide issue or isolated problem.

Step 3: Focus on the failing pod
Get details: kubectl describe pod podname -n namespace
Check logs: kubectl logs podname -n namespace
Get inside: kubectl exec -it podname -n namespace – /bin/sh

Step 4: Check health probes
Look for probe failures in the describe output
Test probe endpoint: kubectl exec -it podname -n namespace – curl localhost:port/health

Step 5: Check deployments and rollouts
Rollout status: kubectl rollout status deployment/name -n namespace
View history: kubectl rollout history deployment/name -n namespace
Rollback: kubectl rollout undo deployment/name -n namespace

Step 6: Verify networking
List services: kubectl get svc -n namespace
Check endpoints: kubectl get endpoints -n namespace
Test DNS: kubectl exec -it podname – nslookup servicename

Step 7: Quick fixes that work
Restart deployment: kubectl rollout restart deployment/name -n namespace
Delete problematic pod: kubectl delete pod podname -n namespace

The key is following the steps in order, not jumping around randomly.

[Mudasir @beingmbh]

I just published Deploying Portainer on an Ubuntu EC2 Instance Using Docker Compose https://t.co/47nMiBO15l
@Portainer.io #portainer #aws #EC2 #devops #communitybuilder

[Paul Copplestone - e/postgres @kiwicopple]

we just released 𝚙𝚘𝚜𝚝𝚐𝚛𝚎𝚜-𝚋𝚎𝚜𝚝-𝚙𝚛𝚊𝚌𝚝𝚒𝚌𝚎𝚜, inspired by Vercel's 𝚛𝚎𝚊𝚌𝚝-𝚋𝚎𝚜𝚝-𝚙𝚛𝚊𝚌𝚝𝚒𝚌𝚎𝚜

these are the Agent Skills that we use on the supabase platform - including performance, security, & schema design

details ↓
https://t.co/7GOYpuin6e

[Neo Kim @systemdesignone]

If you want to become good at system design (in 3 weeks), learn these 15 case studies:

[CNN @CNN]

Amazon confirms fresh "connectivity issues" following a massive outage that disrupted several popular websites and apps. Follow live updates.
https://t.co/yrzMctskiB

[Mudasir @beingmbh]

I just published Understanding Enhanced Networking in AWS EC2: ENA vs EFA (with a Demo) https://t.co/DXu8sdw2X0

[Mudasir @beingmbh]

I just published Kubernetes Horizontal Pod Autoscaling (HPA) — Step by Step Guide https://t.co/WgNpYk8000
#Kubernetes #DevOps #CloudNative #Autoscaling #Containers

[Mudasir @beingmbh]

Service in Kubernetes acts as a gateway that distributes incoming traffic between its endpoints
#kubernetes #tips #devops

[Mudasir @beingmbh]

Check out my latest article: Requests vs Limits in Kubernetes Pods: Clearing the Confusion https://t.co/aC55X8mENa via @LinkedIn

[Akhilesh Mishra @livingdevops]

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

[Mudasir @beingmbh]

I just published Deploying a KIND Kubernetes Cluster on AWS EC2 https://t.co/H7r9BSuUrP