Rakesh Jain Profile picture
Linux Enthusiast 🐧 | Cloud ☁️ | DevOps 💻 | Security 🪖 Exploring and sharing tech insights through my writings ✍️ Come along on this journey! 👋
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Jul 31 15 tweets 2 min read
Typical Tasks for #DevOps or #Cloud Infrastructure Admins Using #Terraform!

A thread 👇 PS: https://wallpapercave.com/wp/wp13181870.jpg A DevOps or cloud infra admin typically uses Terraform to manage & automate the provisioning of infrastructure. Their responsibilities with Terraform often include tasks that are more operational & infrastructure-focused, distinct from the development or QA tasks.
Jul 29 18 tweets 3 min read
15 Advanced Linux Commands Explained Simply! 🌟

A Thread 🧵 👇 Image 1️⃣ grep
Searches for text within files.

Example: grep "hello" file.txt
🔍 Finds the word "hello" in "file.txt" and shows the line where it appears.
Jul 18 22 tweets 4 min read
Advanced Ansible Guide 🛠️

#Ansible #DevOps PS: https://e1.pxfuel.com/desktop-wallpaper/21/1012/desktop-wallpaper-how-to-install-and-setup-ansible-on-ubuntu-20-04-ansible.jpg 🔐 Using Ansible Vault:

Encrypt sensitive data for enhanced security. Ansible Vault helps protect your secrets like passwords and API keys. 🛡️ #Ansible #DevSecOps

Example:
ansible-vault encrypt_string 'my_secret_password' --name 'my_var'
Jul 14 22 tweets 3 min read
Ansible Guide!

Easy Understanding Concepts of Ansible for beginner! PS: https://developers.redhat.com/sites/default/files/Dev%20Spaces%20Ansible%20LP%20Featured%20image.png 1/20 🧵✨ Let's dive into Ansible, your friendly automation tool! Whether you're a beginner or just need a refresher, this thread is for you! 🚀 #Ansible #DevOps
Jul 13 22 tweets 3 min read
Terraform Guide!

Easy Understanding Concepts of Terraform for beginners 👇 Ps: https://miro.medium.com/v2/resize:fit:1200/0*_cDhqi094nCleWqp.jpg 1️⃣ 🌍🚀 Welcome to the ultimate Terraform guide for beginners! Let's dive into the world of Infrastructure as Code (IaC) and make your cloud deployments a breeze. #Terraform #DevOps
Jul 11 22 tweets 3 min read
Linux Guide!

A thread explaining Basic to Advanced Linux concept! PS: https://images5.alphacoders.com/118/thumb-1920-1186357.jpg 🧵 1/20: 🚀 Welcome to Basic to Advanced Linux Concepts! Let's dive deeper into the powerful features and capabilities of Linux. #Linux #AdvancedLinux
Jul 10 21 tweets 3 min read
Docker Guide!

Easy Understanding Concepts of Docker 🐳

#docker #Containers PS: https://codesphere.ghost.io/content/images/2022/03/Getting-started-with-Docker.png 1/ 🐳 What is Docker?

Docker is a platform that allows you to package applications into containers—standardized units that include everything needed to run the app: code, runtime, libraries, and dependencies.
Jul 9 42 tweets 5 min read
Kubernetes Guide!

Easy Understanding Concepts of Kubernetes 🕸️ PS: https://wallpapercave.com/wp/wp10034193.png 1. Kubernetes Basics:
● Pods: Smallest deployable units in Kubernetes that can hold one or multiple containers.

● Nodes: Worker machines in Kubernetes.

● Clusters: A set of worker machines, called nodes, that run containerized applications.
May 24 18 tweets 2 min read
Troubleshooting Jenkins - 15 Common Issues and Solutions! 🚀

#Jenkins #DevOps Image 1/ Issue: Jenkins Out of Memory Errors

Solution: Increase Java heap size in Jenkins. Go to /etc/default/jenkins and set JAVA_ARGS="-Xmx2g" (adjust the size as needed).
Apr 29 9 tweets 2 min read
🔍 AIOps vs. DevOps
Can AIOps Replace the Whole DevOps? 🔄

A thread🧵👇 Image 1/ 💡 Culture Matters:

DevOps isn't just about tools; it's about teamwork and making things better together. AIOps helps with some tasks, but it can't fix team dynamics.

Example: In DevOps, developers and IT folks work closely to solve problems faster.
Apr 27 11 tweets 4 min read
Is Linux🐧a must have skill for high-paying #DevOps jobs!

Here is the answer 👇 🧵 Image Absolutely! Linux is a cornerstone skill for high-paying #DevOps jobs. Here's why 👇 Image
Apr 24 25 tweets 5 min read
🚨Interview Guide!

AWS☁️Networking Interview Questions & Answers👇

#AWS #Cloud #networking #interview #Guide 1/15 Q: What is the difference b/n an Internet Gateway (IGW) & a NAT Gateway in AWS networking?

A: An IGW allows communication b/n instances in a VPC & the internet, while a NAT Gateway enables outbound internet traffic from private subnets without exposing their IP addresses.
Apr 22 19 tweets 3 min read
🚨Kubernetes Interview Guide!

A thread with 15 interview questions & answers for new/intermediate administrators ⚓️👇 1/15: Question: What is a Kubernetes Pod, and why is it used?

Answer: A Pod is the smallest deployable unit in Kubernetes, representing one or more containers that share resources. It's used to deploy, manage, and scale containers.
Apr 20 18 tweets 3 min read
🚨Linux Interview Guide!🚨

A thread with 15 advanced questions &answers 🐧👇 Image 1️⃣ Q: How do you optimize disk I/O performance in Linux?

A: Utilize techniques like RAID striping, I/O schedulers (e.g., deadline, noop), and file system optimizations (e.g., tuning journaling options).
Apr 18 18 tweets 3 min read
🚨🚨Interview Guide!

15 Docker scenario-based interview questions and answers 👇🛳️ Q1: U r tasked with deploying a multi-container app on Docker. How would u orchestrate these containers effectively?

A: Utilize Docker Compose, defining services, networks, & volumes in a YAML file. It simplifies multi-container deployments, ensuring consistency & scalability.
Apr 16 21 tweets 3 min read
🚨🚨 Interview Tip!

What happens at the backend when you launch a Pod in Kubernetes!

A Thread 👇 Image 🐳 Step 1: YAML Configuration

To kick things off, you create a YAML file defining your Pod's configuration. This includes details like container images, ports, volumes, etc. #Kubernetes #YAML
Apr 13 18 tweets 2 min read
Docker Master Class in 15 practical examples 🛳️

A Thread 👇 1/ Hello Docker!

docker run hello-world

Experience the magic of Docker with the simplest container ever.
Apr 7 18 tweets 2 min read
Parsing Linux Log files effectively!

15 examples that DevOps or Linux admins might use on a daily basis 👇 1/ Search for specific text in a log file:

grep "error" /var/log/syslog

This command searches for the term "error" in the syslog file.
Apr 4 18 tweets 3 min read
Mastering TCPDUMP!

A thread on Linux packet analyzer tool👇🐧 📡 What is tcpdump?

🕵️‍♂️ tcpdump is a powerful command-line packet analyzer. It allows you to capture and analyze network traffic in real-time or save it to a file for later inspection.
Apr 3 22 tweets 3 min read
Mastering Linux Access Control List (ACL)!

A Thread 👇🐧 Image What is Linux ACL?

🐧 Linux ACL (Access Control List) is a powerful feature for fine-tuning file permissions beyond traditional owner, group, and other categories.
Apr 2 18 tweets 3 min read
Docker vs. Containerd! 🛳️

Why doesn't Kubernetes support Docker anymore? 🚨

How to install Containerd and Integrate with Kubernetes!🧑‍💻

An all in one thread 👇⚓️🐧 Image 1/7: Docker and Containerd are both container runtimes, but they serve different purposes in the container ecosystem.

Let's delve into the differences between them and why Kubernetes doesn't support Docker today.