AZHARUDDIN ALAM’s Post

𝟮𝟬 𝗗𝗼𝗰𝗸𝗲𝗿 𝗰𝗼𝗺𝗺𝗮𝗻𝗱𝘀 𝗲𝘃𝗲𝗿𝘆 𝗗𝗲𝘃𝗢𝗽𝘀 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝘀𝗵𝗼𝘂𝗹𝗱 𝗸𝗻𝗼𝘄 (𝟮𝟬𝟮𝟲) In production environments, efficiency matters more than memorizing everything. Most DevOps engineers rely on a small set of Docker commands daily: - container lifecycle - image management - debugging and logs Mastering these improves troubleshooting speed and deployment confidence. This cheat sheet focuses on practical usage, not theory. What’s one Docker command you think every engineer should know early? #docker #devops #linux #sysadmin #cheatsheet #containers #kubernetes #linuxcommands #LinuxTeck

DevOps Zero to Job-Ready – Day 12/180 | Conditionals & Loops in Bash Scripts shouldn’t run blindly — they should react based on conditions. Conditionals (`if`) allow decisions like checking if a file or server exists. Loops (`for`, `while`) help repeat tasks across files, logs, or retries. This is what makes scripts dynamic instead of static commands. More structured DevOps notes and scenarios available on [www.engidock.com] #DevOps #Linux #Automation

🚀 Linux Commands Every Developer Should Know Mastering Linux isn’t optional anymore—it’s a core skill for developers, DevOps engineers, and backend builders. Here’s a quick breakdown of essential command categories: • Navigation & Filesystem → move and explore efficiently • File Operations → create, copy, delete with confidence • Permissions → control access like a pro • Process Management → monitor and kill processes • Networking → debug connectivity issues fast • Disk & Storage → manage system resources • Search & Text → powerful data filtering with grep/awk • User Management → handle users and groups securely 💡 Tip: Don’t just memorize—practice daily in your terminal. If you're building scalable systems, Linux is your foundation. #Linux #DevOps #BackendDevelopment #Programming #SoftwareEngineering #SysAdmin #TechSkills

Day 3 of My DevOps Journey Today was all about getting hands-on with Linux fundamentals — an essential building block for any DevOps engineer. I explored key commands and concepts such as: 🔹 User & Group Management: "adduser", "addgroup" 🔹 File Ownership: "chown" 🔹 File Permissions: "chmod" 🔹 File Management & understanding permission structures It’s fascinating to see how much control Linux gives over users, access, and security. These concepts might seem basic, but they form the backbone of managing real-world systems effectively. Every day is a step closer to becoming proficient in DevOps Looking forward to diving deeper tomorrow! #DevOps #Linux #LearningInPublic #CloudComputing #SystemAdministration #TrainwithShubhum

Day 07 of #90DaysOfDevOps 🚀 Linux File System Hierarchy: Know Where Everything Lives Today I stopped treating Linux as a black box. Time to think like an operator. Every DevOps engineer should know where to look first: → `/etc` — configuration files (nginx, ssh, hosts) → `/var/log` — first stop during incidents → `/tmp` — temporary files → `/opt` — third-party tools (Jenkins, Grafana) → `/home` / `/root` — user environments and permissions What I practiced today: ✅ Mapped core Linux directories with real-world use cases ✅ Diagnosed a failed service using `systemctl status` + `journalctl` ✅ Identified CPU-heavy processes with `ps aux --sort=-%cpu` ✅ Resolved permission issues using `chmod +x` ✅ Located service logs with `journalctl -u <service>` 💡 Most useful takeaway: A service failing after reboot isn't always a crash issue — sometimes it was never enabled to start. Verified with `systemctl is-enabled`. 🔑 Mindset Shift: In production, speed comes from knowing where to check, what to run, and what signal matters first. #90DaysOfDevOps #DevOpsKaJosh #TrainWithShubham #Linux #DevOps

🚀 Most DevOps & Linux Beginners Fail This Simple OS Interview Question ❌ 📌 Important Linux Concept Q: What is the difference between "kill" and "kill -9" in Linux? ✅ Answer: "kill" sends a SIGTERM (15) signal, allowing the process to terminate gracefully. "kill -9" sends a SIGKILL (9) signal, forcing the process to stop immediately without cleanup. 💡 Simple rule: kill → graceful stop kill -9 → force stop #Linux #SysAdmin #RHCSA #Ubuntu #DevOps #OpenSource #ITCareer #Linux #LinuxCommands #LinuxBasics #LinuxTutorial #LinuxAdministration #LinuxForDevelopers #DevOps #CloudComputing #Automation #Infrastructures #Docker #Kubernetes #Containerization #Scalability #AWS #DEVOPS #CLOUDENGINEER #DEVOPSENGINEER #SRE #AZURE #BRK #RK #AIDEVOPS #GCP #KUBERNETES #DEVSECOPS #MLOPS #SOLUTIONARCHITECT #NETWORKENGINEER #PLATFORMENGINEER. #DevOps #AWS #Docker #Kubernetes #Jenkins #Terraform #Ansible #CloudComputing #CICD #DevOpsCommunity #AWSCloud #CloudEngineering #InfrastructureAsCode #Automation #TechCommunity #SoftwareEngineering #CloudArchitecture #DevOpsTools #GitOps #CloudNative #Terraform #Git #Docker #Ansible #Jenkins #Splunk #Grafana #Prometheus #Salt #Kubernetes #AutomationEngineer #fluxcd #puppet #chef #nexus #AgroCD #circleCI #Helm #SonarQube #Owasp #Trivy #Maven #BRK #RK!!!

Ansible is not just automation. It's documentation. A well-written playbook tells you: → What the server should look like → What steps were taken to get there → What can go wrong and how to handle it Compare that to a runbook written in Confluence that's 18 months out of date. Executable documentation > Static documentation. If your playbooks are readable by a junior engineer on their first day, you've done it right. #Ansible #DevOps #Automation #Infrastructure #Linux

DevOps Zero to Job-Ready – Day 13/180 | Functions & Arguments in Bash As scripts grow, repeating the same logic becomes hard to manage. Functions help organize code and reuse logic in one place. Arguments (`$1`, `$2`) make scripts flexible and reusable. Instead of repeating commands, define once and call when needed. More structured DevOps notes and scenarios available on www.engidock.com Next: Real script — backup automation #DevOps #Linux #Automation #EngiDock

Episode 7 of the DevOps Tools Engineer 2.0 Introduction series dives into exam objective #ContainerOrchestration. Learn how #DockerCompose & #PodmanCompose define and run multi-container applications for modern #DevOps workflows: https://lpi.org/4nh7 Linux Professional Institute (LPI) #DevOps #containerorchestration #dockercompose #podmancompose #microservices #services #networks

Episode 7 of the DevOps Tools Engineer 2.0 Introduction series dives into exam objective #ContainerOrchestration. Learn how #DockerCompose & #PodmanCompose define and run multi-container applications for modern #DevOps workflows: https://lpi.org/4nh7 Linux Professional Institute (LPI) #DevOps #containerorchestration #dockercompose #podmancompose #microservices #services #networks