StepUpDevOps

Sharing simplified tech concepts on DevOps! Follow for easy-to-digest insights on Linux, Containers, Cloud, Kubernetes, CI/CD, IaC

[StepUpDevOps @StepUpDevOps]

The DevOps field is an ocean 🌊

Don't get overwhelmed by so many new tools. 🤔

Try to be strong in the basics 💪

- Linux
- Git
- Container
- Networking
- Security
- Cloud concepts
- Problem solving
- General DevOps

You'll learn the rest as you work on projects 💻

#DevOps

[StepUpDevOps @StepUpDevOps]

How to troubleshoot the deployments in kubernetes ?
Excellent read!

https://t.co/gqe8OXNVfH

[StepUpDevOps @StepUpDevOps]

CI/CD using AWS, Jenkins, Docker, and Kubernetes

https://t.co/sO7mTz3g4N

[StepUpDevOps @StepUpDevOps]

Deploy a Dockerized Flask Application to AWS ECS using CircleCI and Terraform

https://t.co/BSck5RbM3J

[StepUpDevOps @StepUpDevOps]

How do you rollback deployments in Kubernetes?

- Learn about critical difference between Deployment and ReplicaSets
- Internal working of how kubernetes handles the rollback ?
- What is --record command ?

https://t.co/Nzyus4EDiz

[StepUpDevOps @StepUpDevOps]

#AWS Learning roadmap that you can't miss!!

Follow this step-by-step roadmap to learn #AWS

[StepUpDevOps @StepUpDevOps]

It's poll time!

Which Kubernetes object ensures the desired number of pod replicas are running?

[StepUpDevOps @StepUpDevOps]

You have nicely explained!

Blue-Green is an important deployment strategy to know and understand when (not)to use!

[Nikki Siapno @NikkiSiapno]

Blue-Green Deployment Pattern Explained.

Renowned for "zero downtime", blue-green deployment involves maintaining two identical production environments, called "blue" and "green".

At any given time, only one environment is live (let's say blue), serving all production traffic. When a new version of software is ready, it's deployed to the inactive environment (green).

After comprehensive testing without affecting live traffic, users are transitioned to the green environment, which becomes the live environment, while the blue environment becomes idle, ready for the next update.

This minimizes downtime and reduces the risk of deployment failures.

If an issue is discovered after switching environments, it's relatively easy to switch back.

The main challenge is the cost and complexity of managing two environments.

So how can blue-green deployment be implemented?

1) Set up two identical environments: Ensure you have two environments that mirror each other.

2) Deploy the new version to the inactive environment

3) Test extensively: Conduct comprehensive testing in the inactive environment to ensure everything functions correctly.

4) Switch traffic: Once satisfied, redirect user traffic from the active environment to the inactive environment. The state of the environments switch.

5) Monitor and roll back if necessary: Monitor the now active environment and be prepared to switch back to previous environment if issues are detected.

Blue-green deployment is particularly beneficial when zero downtime, quick rollback capabilities, thorough pre-deployment testing, and a seamless user experience are top priorities.

It’s an excellent choice for high-traffic applications, complex systems, and industries with stringent compliance requirements.

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[StepUpDevOps @StepUpDevOps]

Checkout the official terraform guide by Hashicorp!
https://t.co/kTVj5fwzID

[StepUpDevOps @StepUpDevOps]

Learn #Terraform quickly on AWS cloud!

Check the thread for the link 🔗

[StepUpDevOps @StepUpDevOps]

An essential concept to understand for a DevOps engineer!

[Bytebytego @bytebytego]

Linux Boot Process Illustrated

The diagram below shows the steps.

Step 1 - When we turn on the power, BIOS (Basic Input/Output System) or UEFI (Unified Extensible Firmware Interface) firmware is loaded from non-volatile memory, and executes POST (Power On Self Test).

Step 2 - BIOS/UEFI detects the devices connected to the system, including CPU, RAM, and storage.

Step 3 - Choose a booting device to boot the OS from. This can be the hard drive, the network server, or CD ROM.

Step 4 - BIOS/UEFI runs the boot loader (GRUB), which provides a menu to choose the OS or the kernel functions.

Step 5 - After the kernel is ready, we now switch to the user space. The kernel starts up systemd as the first user-space process, which manages the processes and services, probes all remaining hardware, mounts filesystems, and runs a desktop environment.

Step 6 - systemd activates the default. target unit by default when the system boots. Other analysis units are executed as well.

Step 7 - The system runs a set of startup scripts and configure the environment.

Step 8 - The users are presented with a login window. The system is now ready.

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Subscribe to our weekly newsletter to get a Free System Design PDF (158 pages): https://t.co/FIzCeaWsZV

[StepUpDevOps @StepUpDevOps]

Understanding Kubernetes networking: ingress

https://t.co/JsbtISqtQS

[StepUpDevOps @StepUpDevOps]

Understanding #Kubernetes networking can be hard!!

But knowing these is important if you are working on Kubernetes!!

Go through these blogs to demystify the networking in #Kubernetes in terms of Pods, Services, and Ingress.

[StepUpDevOps @StepUpDevOps]

Understanding Kubernetes networking: services

https://t.co/nsryUx7hNa

[StepUpDevOps @StepUpDevOps]

Complete docker course by @sidpalas - Beginner to Pro!

https://t.co/5Np61HWZah

[StepUpDevOps @StepUpDevOps]

Learn docker for FREE! 🚢

Take some time and learn docker now!

Checkout the thread for some of the best courses you can quickly go through and understand docker in detail.

[StepUpDevOps @StepUpDevOps]

Docker Course for beginners ~ 3 hours by @Njuchi_

Make sure to use docker-desktop instead of docker toolbox.
https://t.co/tOBevLfgZd

[StepUpDevOps @StepUpDevOps]

Are you a beginner who wants to understand #Kubernetes and get your hands dirty?

The easy guide to learning Kubernetes under an hour and doing a demo project in your local Kubernetes cluster.

Check out!
https://t.co/RrSyYPzFNP

[StepUpDevOps @StepUpDevOps]

Do yourself a favor!

Start learning 👇

- Linux and shell scripting
- Networking and security basics
- Git
- CI/CD
- Docker
- One Cloud provider

Learn DevOps and Thank me later!

[StepUpDevOps @StepUpDevOps]

@ProgressiveCod2 Very interesting and unique share!