👾 DevOps Real-time scenarios 👾

🔴 Scenario 1: Service Outage

Issue: A critical service experiences an outage, impacting users and business operations.

😀 Resolution:

✔️ Incident Response: Quickly activate the incident response plan to diagnose and address the root cause of the outage.

✔️ Rollback Plan: If possible, execute a rollback plan to restore the service to a stable state.

✔️ Failover and Redundancy: Implement failover mechanisms and redundancy to minimize the impact of single points of failure.

✔️ Monitoring and Alerting: Enhance monitoring and alerting systems to proactively detect and respond to potential outages.

---------------------------------------------

🔴 Scenario 2: Cross-Functional Collaboration

Issue: Communication breakdowns between development and operations teams lead to misunderstandings and delays.

😀 Resolution:

✔️ Cross-Functional Teams: Foster a culture of collaboration by having mixed teams with members from development, operations, and other relevant departments.

✔️ Shared Tools: Use tools that are accessible and understandable by both developers and operations teams.

✔️ Continuous Communication: Encourage regular meetings, stand-ups, and knowledge-sharing sessions to align goals and expectations.

✔️ Blameless Post-Mortems: Conduct blameless post-mortems to analyze failures, identify improvements, and avoid assigning blame.


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📢 Docker Full Notes 📁 2023


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👾 DevOps Notes 🔥


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🔥 Free resources
🔥 Exam AZ-900: Microsoft Azure Fundamentals

Credit: Microsoft Learn

Skills measured:

✔️ Describe cloud concepts
https://lnkd.in/gNKy9r3J

✔️ Describe Azure architecture and services
https://lnkd.in/gJBMgbDg

✔️ Describe Azure management and governance
https://lnkd.in/gaH4RxvW


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⚡️ Linux Complete Notes 2023 ⚡️


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🎤 Frequently Asked Questions ‼️

🔢. How to become a DevOps Engineer?
➡️ To become a DevOps Engineer, you need to have technical skills in areas such as development, automation, containerization, cloud, CI/CD pipelines etc. Some sample tools and technologies to learn may include any programming language, AWS, Ansible, Terraform, Docker, Kubernetes, Jenkins, Git, and monitoring and logging tools. Gain experience by working on DevOps projects, develop a DevOps mindset, get certified, and apply for DevOps Engineer positions by highlighting your skills and experience in your resume.

🔢. What are some misconceptions about DevOps?
➡️ Some common misconceptions about DevOps include:

🟢 DevOps is just automation: While automation is an important part of DevOps, it's not the only thing. DevOps is a culture that emphasizes collaboration, communication, and integration between development and operations teams to improve the quality and speed of software delivery.

🟢 DevOps is just a job title: DevOps is a mindset and set of practices, not a specific job title. Anyone involved in the software development and delivery process can adopt a DevOps mindset and apply DevOps practices in their work, including developers, testers, operations engineers, and others.

🟢 DevOps eliminates the need for IT operations: DevOps does not eliminate the need for IT operations. Instead, it changes the way that operations teams work by promoting collaboration with development teams and introducing new tools and processes for deployment, monitoring, and maintenance.


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♾ Optimizing Financial Technology with DevOps: A Whitepaper on Fintech’s Digital Transformation 🔥


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♾ Top Programming Languages for Streamlining DevOps Workflows 🚀 :

✅ Python: Python is often considered the Swiss army knife of programming languages for DevOps. It's known for its readability and simplicity, making it an ideal choice for various automation tasks. Python is frequently used for scripting, infrastructure as code (IaC) with tools like Ansible.

✅ Bash/Shell Scripting: Shell scripting is a fundamental skill for DevOps engineers. Bash and other shell scripts are used for automating system tasks, managing server configurations, and orchestrating complex processes in Unix-based environments.

✅ PowerShell: In Windows-centric DevOps environments, PowerShell is the go-to scripting language. It's used for tasks like Windows server management, automation, and configuration.

✅ Ruby: Ruby is known for its elegance and developer-friendliness. DevOps engineers often use Ruby in tools like Capistrano for automating deployment and configuration management tasks.

✅ Go (Golang): Go is a statically typed language developed by Google, designed for simplicity, efficiency, and speed. It's commonly used in DevOps for building microservices, creating lightweight applications


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😀 A Kubernetes service is a 𝗹𝗼𝗴𝗶𝗰𝗮𝗹 𝗰𝗼𝗹𝗹𝗲𝗰𝘁𝗶𝗼𝗻 𝗼𝗳 𝗽𝗼𝗱𝘀 in a Kubernetes cluster and 𝗲𝗮𝘀𝗶𝗹𝘆 𝗲𝘅𝗽𝗼𝘀𝗲 𝗮𝗻 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 deployed on a set of pods using a single endpoint.

➡️ If a service is keeping track of pods 𝘂𝘀𝗶𝗻𝗴 𝗹𝗮𝗯𝗲𝗹𝘀 𝗶𝗻𝘀𝘁𝗲𝗮𝗱 𝗼𝗳 𝗜𝗣 𝗮𝗱𝗱𝗿𝗲𝘀𝘀 and the label is always the same.

➡️ Labels are the 𝗽𝗿𝗼𝗽𝗲𝗿𝘁𝗶𝗲𝘀 attached to each item/object. Selector helps us to 𝗳𝗶𝗹𝘁𝗲𝗿 𝘁𝗵𝗲 𝗶𝘁𝗲𝗺𝘀/objects which have labels attached to them.

➡️ Each Pod gets its 𝗼𝘄𝗻 𝗶𝗻𝘁𝗲𝗿𝗻𝗮𝗹 𝗜𝗣 𝗮𝗱𝗱𝗿𝗲𝘀𝘀, but the Pods in K8s are ephemeral, meaning that they are destroyed frequently.

➡️ Pod restarts or when old one dies and the new one gets started in its place it 𝗴𝗲𝘁𝘀 𝗮 𝗻𝗲𝘄 𝗜𝗣 𝗮𝗱𝗱𝗿𝗲𝘀𝘀.

➡️ YAML is a human-friendly language. In the context of Kubernetes, YAML files are 𝗺𝗮𝗶𝗻𝗹𝘆 𝘂𝘀𝗲𝗱 𝗳𝗼𝗿 𝘁𝗵𝗲 𝗰𝗼𝗻𝗳𝗶𝗴𝘂𝗿𝗮𝘁𝗶𝗼𝗻 of K8 pods, services, and deployments.

In Kubernetes, YAML is a manifest file.

➡️ 𝗣𝗼𝗿𝘁 --> exposes the Kubernetes service on the 𝘀𝗽𝗲𝗰𝗶𝗳𝗶𝗲𝗱 𝗽𝗼𝗿𝘁 𝘄𝗶𝘁𝗵𝗶𝗻 𝘁𝗵𝗲 𝗰𝗹𝘂𝘀𝘁𝗲𝗿. Other pods within the cluster can communicate with this server on the specified port.

➡️ 𝗧𝗮𝗿𝗴𝗲𝘁𝗣𝗼𝗿𝘁 --> This is the port on the pod that the request gets 𝘀𝗲𝗻𝘁 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗻𝗲𝗲𝗱𝘀 𝘁𝗼 𝗯𝗲 𝗹𝗶𝘀𝘁𝗲𝗻𝗶𝗻𝗴 𝗳𝗼𝗿 𝗻𝗲𝘁𝘄𝗼𝗿𝗸 𝗿𝗲𝗾𝘂𝗲𝘀𝘁𝘀 𝗼𝗻 𝘁𝗵𝗶𝘀 𝗽𝗼𝗿𝘁 for the service to work.

💢 Services 💢
☑️ Load Balancing
☑️ Service Discovery
☑️ Expose to external world --> Outside K8's cluster

💢 Service types 💢
☑️ Cluster IP - Only accessible from within the cluster
☑️ Node port - Static port on each node’s IP
☑️ Load balancer - Cloud provider’s load balancer


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🔥 AZURE DEVOPS NOTES 2023


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📢 AWS Projects

📎 Link : https://drive.google.com/drive/folders/1XE1IPS2N0ValL8sImojb8VuWscymclzD?usp=drive_link


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☑️ Free Resources
☑️ eBook: Azure DevOps Security Checklist


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🔥 YOUTUBE CHANNELS TO LEARN DEVOPS 🔥

❓ Note: This tutorial should be followed, the way I numbered it.

⚡️ COMPLETE DEVOPS TUTORIAL:

➡️ 1. DevOps Pre-requisite
https://lnkd.in/dD9Z_5qA

➡️ 2. Networking
https://lnkd.in/dEmZ8zhY

https://lnkd.in/dwfmwmA9

➡️ 3. Linux
https://lnkd.in/d7gzxH5z

https://lnkd.in/dr4pjCV3

https://lnkd.in/dzTQE4b7

➡️ 4. Shell scripting
https://lnkd.in/dKrD_up7

https://lnkd.in/dJVqMt3Y

https://lnkd.in/d7VVbbNJ

➡️ 5. Git & GitHub
https://lnkd.in/dEp3KrTJ

https://lnkd.in/d6aM7Ek7

https://lnkd.in/duksFRgG

https://lnkd.in/ddpKXxqt

➡️ 6. Databases
https://lnkd.in/duMVr4bn

https://lnkd.in/dnUQ_uGe

➡️ 7. Artifact Repository Manager
https://lnkd.in/dgNHs7WD

➡️ 8. Docker
https://lnkd.in/dPddbJTf

https://lnkd.in/dnjHdxPR

➡️ 9. Jenkins
https://lnkd.in/dMHv9T8U

https://lnkd.in/dcynPYYH

➡️ 10. AWS
https://lnkd.in/dz7d5qEc

https://lnkd.in/dmi-TMv9

https://lnkd.in/dx-iqVNe

➡️ 11. SSH
🟢 Mobaxterm :
https://lnkd.in/ds7nUhbx

🟢 Putty :
https://lnkd.in/gGgW7Ns9

➡️ 12. Yaml
https://lnkd.in/dNqrXjmV

https://lnkd.in/dNqrXjmV

➡️ 13. Kubernetes
https://lnkd.in/duGZwHYX

https://lnkd.in/de84ESNv

➡️ 14. Helm
https://lnkd.in/ds_8WB7G

➡️ 15. Terraform
https://lnkd.in/dvpzNT5M

https://lnkd.in/dRs3YFu3

https://lnkd.in/d8nkTj3n

➡️ 16. Python
https://lnkd.in/d-EhshQz

https://lnkd.in/dYjay9ia

https://lnkd.in/dFtNz_9D

https://lnkd.in/dcYq8nE2

➡️ 17. Ansible
https://lnkd.in/dGKkrXrA

https://lnkd.in/dNugwtVW

https://lnkd.in/dhknHJXp

➡️ 18. Prometheus
https://lnkd.in/dpXhmVqs

https://lnkd.in/dStQbpRX

➡️ 19. Grafana
https://lnkd.in/ddAV7_-p

https://lnkd.in/dRwfE7A4

HAPPY LEARNING 📌

©: @prodevopsguy

➡️ 𝗚𝗶𝘁, a fundamental tool that is indispensable for managing the complexities of modern codebases.
As a distributed version control system, Git offers unparalleled flexibility, robustness, and efficiency in handling code revisions, branches, and merges, making it the de facto standard for both open-source contributors and enterprise developers.

➡️ 𝗧𝗵𝗲 𝗽𝗼𝘄𝗲𝗿 𝗼𝗳 𝗚𝗶𝘁 lies not only in its capability to track changes and coordinate work among multiple contributors but also in its ability to facilitate a non-linear development process.
It enables developers to branch out, experiment, collaborate, and converge, thereby fostering innovation and speed in software development.

👉 This extensive list includes the most useful operations one can perform with Git, from basic setup and file handling to advanced repository management and automation.

While there are many more Git commands and options available, these operations form the core toolkit that most users will require for efficient version control with Git.


©: @prodevopsguy

🔥 SITE TO LEARN DEVOPS:

➡️ https://kodekloud.com/
➡️ https://lnkd.in/dVeX_UVV
➡️ https://lnkd.in/ddVE2r-3
➡️ https://www.edureka.co/
➡️ https://theitern.com/
➡️ https://intellipaat.com/
➡️ https://lnkd.in/dKZHTEce
➡️ https://www.udacity.com/
➡️ https://cloudacademy.com/

NOTE : WHEN YOU COPY TO PASTE ON YOUR PAGE, GIVE CREDIT


©: @prodevopsguy