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.

2/ 💻 From Idea to Reality:

DevOps handles everything from planning to getting the software out there. AIOps helps with some steps, but it doesn't cover everything DevOps does.

Example: In DevOps, everyone works together to build and release software smoothly.

Read 9 tweets

Rakesh Jain

@devops_tech

Apr 24

🚨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.

2/15 Q: Explain the concept of VPC peering in AWS.

A: VPC peering allows connecting two VPCs privately to share resources, like EC2 instances, without traversing the internet. It enables communication using private IP addresses across peered VPCs. #AWSNetworkingInterview

Read 25 tweets

Rakesh Jain

@devops_tech

Apr 22

🚨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.

2/15: Question: How does Kubernetes manage container networking?

Answer: Kubernetes uses the Container Network Interface (CNI) to manage container networking. CNI plugins allow for different network configurations and overlays, enabling communication between pods across nodes.

Read 19 tweets

Rakesh Jain

@devops_tech

Apr 20

🚨Linux Interview Guide!🚨

A thread with 15 advanced questions &answers 🐧👇

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).

2️⃣ Q: Explain the concept of kernel namespaces in Linux.

A: Kernel namespaces isolate and virtualize system resources, enabling processes to have their own view of the system, improving security and resource management.

Read 18 tweets

Rakesh Jain

@devops_tech

Apr 18

🚨🚨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.

Q2: ur team wants to ensure seamless updates without downtime. How would u achieve zero-downtime deployments with Docker?

A: Implement rolling updates with Docker Swarm/ Kubernetes. By gradually updating containers while keeping the app available, u ensure uninterrupted service.

Read 18 tweets

Rakesh Jain

@devops_tech

Apr 16

🚨🚨 Interview Tip!

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

A Thread 👇

🐳 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

🔍 Step 2: API Request

Once you've got your YAML ready, you send an API request to the Kubernetes cluster. This request includes your Pod configuration. #K8s #API

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