Sagar Kakkala's World

Welcome to Sagar Kakkala's World, your go-to destination for learning DevOps and mastering personal finance. Dive into topics like Kubernetes, GitOps, investment tips, and insurance planning. Whether you're advancing your career or securing your financial future, we simplify complex ideas for your growth. To explore specific topics, click on "Contents of Blog" to navigate directly to the content of your choice.

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Session-7 on Finances | Awareness on Scams | Sagar Kakkala's World

December 27, 2024

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Investment Suggestions 2026 | Sagar Kakkala's World

December 23, 2024

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Day-0 | DevOps Overview and Guidance | Sagar Kakkala's World

For Telugu: For English: We will discuss an Overview of DevOps in very simple and Basic Overview Let us say, A Person is running Painting business with Alex Paints and he wants to expand his Business in online, He wants to have his own website and application for his business, And also let us assume that he has very Big Company of his Own. Generally since he has the Product, his company is said to be Product Based Company and now he approaches companies like TCS, Accenture ,Infosys, etc..which will be here called as Service Based Companies. Now the Traditional Method is said to be Waterfall Method. What happens in this Method? Lets say Alex Paints asks for Website, Service Based Company Develops website and then ask for Review for Client (Client is Alex Paints). In Case, the client asks for changes, Entire Website application code has to be changed. This makes challenging to Develop code and also Lot of Time Taking Process, to counter attack this, Most companies...

Enforce Kubernetes Policies Easily with Kyverno

Enforce Kubernetes Policies Easily with Kyverno Kubernetes natively validates resource manifests like deployments to ensure they are syntactically correct. For example, if you try to create a deployment with a syntax error in your deployment.yaml , Kubernetes will reject it. However, once syntax is correct, Kubernetes doesn’t prevent you from deploying applications into the wrong namespace or without proper labels — things that can break your app connectivity or organizational standards. This is where Kyverno comes in. Kyverno is a powerful Kubernetes policy engine that helps enforce policies and best practices across your cluster — validating, mutating, and generating resources automatically. Why Kyverno? Imagine these scenarios: What if an application gets deployed into the wrong namespace? What if a deployment is missing essential labels to connect to a service? What if your organization requires strict policies but you can’t manually monitor all de...

Docker Interview Questions

1. Explain Docker Architecture Before understanding architecture, lets understand how docker works in a simple way.. When you want to run a docker container, using command something like docker run -d -p 8080:80 --name mynginx nginx this actually tries to fetch nginx image that is not present in local, download nginx image from Docker Registry like Docker Hub and then runs container what exactly happened here?. when command was run, it actually was run in docker client, which actually uses REST API´s to call Docker Daemon, and this docker daemon uses service called containerd, which runs the container either by pulling local image or from Docker Hub/Docker Registry Here DockerDaemon manages core services like containers, volumes, images , networks and listens for API requests And here REST API allows communication between server and client containerd - manages lifecycle of container 2.What is Container Lifecycle? lets understand container lifecyle by commands docker...

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