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Andrea 3lixir♏™✍️
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Andrea 3lixir♏™✍️
@robbedfeelings
DevOps•||•Sports and fitness•||•Techie•||• I crave a luv so deep, the ocean would be jealous.
world wide Katılım Eylül 2013
2.4K Takip Edilen2.3K Takipçiler
Andrea 3lixir♏™✍️ retweetledi
Andrea 3lixir♏™✍️ retweetledi

9 GitHub Repos for DevOps Beginners:
1. Cloud-DevOps Learning Resources
github.com/ahmedtariq01/C…
2. System Design Primer
github.com/donnemartin/sy…
3. DevOps Exercises
github.com/bregman-arie/d…
4. Into the DevOps
github.com/NotHarshhaa/in…
5. DevOps Projects
github.com/NotHarshhaa/De…
6. Cloud Native Security
github.com/Hacking-the-Cl…
7. MLOps Basics
github.com/graviraja/MLOp…
8. DevOps Interview Guide
github.com/ramanagali/Int…
9. DevOps Roadmap
github.com/milanm/DevOps-…
Save this. You’ll need it later 🔖

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Andrea 3lixir♏™✍️ retweetledi

You are a genius if you know all of this. If not, tutorials are included!
AI Agents – youtube.com/watch?v=OhI005…
Context – youtube.com/watch?v=4GiqzU…
MCP – youtube.com/watch?v=VfZlgl…
Claude Code – youtube.com/watch?v=SUysp3…
APIs – youtube.com/watch?v=WXsD0Z…
Cursor – youtube.com/watch?v=2aldTx…
Prompts – youtube.com/watch?v=qBlX6F…
OpenClaw – youtube.com/watch?v=n1sfrc…
Free AI agents resources - github.com/avinash201199/… .

YouTube

YouTube

YouTube

YouTube

YouTube

YouTube

YouTube

YouTube
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Andrea 3lixir♏™✍️ retweetledi
Andrea 3lixir♏™✍️ retweetledi
Andrea 3lixir♏™✍️ retweetledi
Andrea 3lixir♏™✍️ retweetledi

Forget TikTok.
Forget YouTube.
Forget Instagram.
Amazon can pay you $3,000/month to start AI publishing.
It’s boring... but if you start today, you could make $3,000 by the end of March.
I’ll send you a free course showing exactly how to do it.
Just like this post and comment “SEND”
(Make sure you follow.)

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Andrea 3lixir♏™✍️ retweetledi

I collected 50 real scenario-based DevOps interview questions from:
- Interviews in my organization
- DevOps engineers in my network
- Friends working in DevOps
- People who shared their interview experiences on LinkedIn
If you're preparing for DevOps roles, this will help.
I have been preparing this doc for over a month in my free time
Devops interviews rarely ask simple questions anymore.
They ask scenarios like:
- A bad commit reached production. What do you do?
- Terraform apply failed halfway. Now what?
- Pod stuck in CrashLoopBackOff. How do you debug it?
Let me know over the comment section if you need it!

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Andrea 3lixir♏™✍️ retweetledi
Andrea 3lixir♏™✍️ retweetledi

🌍 Terraform - Difficulty to Learn 🔥
• 📝 HCL Basics - 🟢 Easy
• 📦 Providers - 🟢 Easy
• 📄 Resources - 🟢 Easy
• 📤 Terraform Commands - 🟢 Easy
◦ init
◦ plan
◦ apply
• 🧪 Workspaces - 🟢 Easy
• 🔗 Variables & Outputs - 🟡 Easy–Medium
• 📁 Modules - 🟡 Easy–Medium
• ⚙️ Provisioners - 🟡 Easy–Medium
• 🔄 Remote State - 🟠 Medium
• 📦 Module Composition - 🟠 Medium
• 🔐 Secrets Handling - 🟠 Medium
• ⚙️ State Management - 🔴 Hard
• 🧩 Dependency Graph Debugging - 🔴 Hard
• 🔒 State Locking & Recovery - 🔴 Hard
• 🌐 Multi-Environment Infrastructure - 🔴 Hard
• 🧬 Building Reusable Terraform Platforms - 🟣 Very Hard
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Andrea 3lixir♏™✍️ retweetledi

Don’t overthink it.
• Learn EC2 → compute
• Learn S3 → storage
• Learn RDS → database
• Learn IAM → security
• Learn VPC → networking
• Learn Lambda → automation
• Learn CloudWatch → monitoring
• Learn Route 53 → DNS & domains
You don’t need every AWS service.
Just master the ones that actually run the cloud. ☁️
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Andrea 3lixir♏™✍️ retweetledi

Kubernetes Explained ☸️
A Kubernetes cluster has two main parts:
🧠 Control Plane
• API Server
• Scheduler
• Controller Manager
• etcd
🖥 Worker Nodes
• Pods
• Container Runtime
• kubelet
• kube-proxy
InShort Simplified 👇
🧠 Control Plane
API Server
• Entry point of the Kubernetes cluster
• All commands and requests go through it
• Communicates with all components
Scheduler
• Watches for new Pods
• Chooses the best worker node
• Assigns Pods to nodes
Controller Manager
• Keeps cluster in the desired state
• Detects failures
• Recreates Pods if needed
etcd
• Distributed key-value database
• Stores cluster configuration
• Stores cluster state
🖥 Worker Nodes
Pods
• Smallest deployable unit
• Runs one or more containers
• Each Pod gets its own IP
Container Runtime
• Runs containers on the node
• Pulls container images
• Manages container lifecycle
kubelet
• Agent running on each node
• Communicates with the API Server
• Ensures containers run as expected
kube-proxy
• Handles network routing
• Enables Pod-to-Pod communication
• Manages service traffic

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Andrea 3lixir♏™✍️ retweetledi

Networking 101: Connect two private networks with a router 🛠️
An easy one today - it's Friday after all. Can you configure a Linux VM to serve as a simple router between two disjoint private networks?
Learning networking by doing 👉 labs.iximiuz.com/challenges/net…

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Andrea 3lixir♏™✍️ retweetledi
Andrea 3lixir♏™✍️ retweetledi

🧱 Dockerfile - How Images Are Actually Built:
A Docker Image doesn’t magically appear.
It is built step by step using a Dockerfile.
Think of a Dockerfile as:
📜 A set of instructions to build your application environment.
🔹 Basic Structure
```dockerfile
FROM node:20-alpine
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 3000
CMD ["npm", "start"]
```
🔍 What Each Instruction Does
🔹 FROM -> Base image (foundation layer)
🔹 WORKDIR -> Sets working directory inside container
🔹 COPY -> Copies code into image
🔹 RUN -> Executes commands during build
🔹 EXPOSE -> Opens application port
🔹 CMD -> Default command when container starts
🧠 Important Concept: Layers
➡️Each instruction creates a layer.
Why does it matter?
✔️ Faster builds
✔️ Smaller rebuilds
✔️ Efficient image reuse

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Andrea 3lixir♏™✍️ retweetledi

#DevOps Interview Pro-Tip: The "3 AM Production Outage" question is a trap. The interviewer isn't testing your Linux skills; they're testing your incident response DNA.
Here is how to answer: What do you do when the site goes down? like Senior Lead.
🧵👇(1/5) #SRE #Kubernetes

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Andrea 3lixir♏™✍️ retweetledi

DevOps is easy.
You just need to master a few tools 😄
Git
npm
Jira
Snyk
Chef
Helm
Asana
Trivy
Falco
Maven
Nomad
Slack
Zabbix
Docker
Kibana
Trello
GitHub
GitLab
Puppet
Pulumi
Nagios
Splunk
Jaeger
Harbor
Tekton
Podman
Bamboo
Argo CD
Flux CD
Ansible
Rancher
Jenkins
Grafana
Datadog
Graylog
Logstash
CircleCI
OpenTofu
TeamCity
Spinnaker
Bitbucket
New Relic
Terraform
SaltStack
Travis CI
OpenShift
Dynatrace
Checkmarx
SonarQube
Kubernetes
Confluence
containerd
Prometheus
Azure Repos
Azure Bicep
GitLab CI/CD
Aqua Security
Elasticsearch
OpenTelemetry
AWS CodeCommit
Sonatype Nexus
CloudFormation
GitHub Actions
Microsoft Teams
HashiCorp Vault
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GIANNIS MY GOODNESS! 😮💨🌋
The Greak Freak saw the lane, went straight through the defenders and BOOM, the powerful slam at the rim!
#NBANigeria
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Andrea 3lixir♏™✍️ retweetledi













