Flow:User ā ELB (ALB Listener) ā Target Group ā EC2 Instances (in different AZs) š Introduction In this guide, you will learn how to: We will use: š¹ Step 1: Launch EC2 Instances (in Different AZs) š ļø Create First Instance (AZ-1) š User Data: #!/bin/bashyum update -yyum install -y httpdsystemctl…
Operators perform operations on variables and values. Python groups them into several types ā below each type I give a short explanation plus runnable examples. 1. Arithmetic operators Used with numeric values for basic math. 2. Assignment operators Used to assign values to variables; augmented forms modify the variable in…
Kubernetes (often abbreviated as K8s) is an open-source container orchestration system for automating the deployment, scaling, and management of containerized applications. š¹ Key Points about Kubernetes: š¹ Why is Kubernetes important? ā In simple words:Kubernetes is like a traffic controller and caretaker for containers. It makes sure your applications always…
EBS is like a hard drive or SSD for your EC2 instances in the cloud. Key Points: Common Use Cases: š In short:EBS = Durable, scalable, and secure storage for EC2 instances. Types of Amazon EBS volumes.AWS offers different EBS volume types based on performance and cost. Great š Letās…
Kubernetes provides several powerful mechanisms for managing application configuration, sensitive information, containers, and access to the Kubernetes API. In this hands-on practice, I worked through: This article documents the complete workflow step by step. 1. Checking Existing ConfigMaps I started by checking the ConfigMaps already available in the namespace. Flow…
Below is the clean and correct command sequence for practicing Kubernetes Deployment, Scaling, Rolling Update, Rollout History, and Rollback. 1. Create a Deployment YAML file Use this YAML: Save and exit: 2. Create the Deployment Check the Deployment: Watch the Deployment: Press: to stop watching. 3. Check all resources Check…
The main topics I practiced were: 1. Checking Kubernetes Nodes I started by checking the nodes in the cluster: kubectl get nodes Example: NAME STATUS ROLES VERSIONcontrolplane Ready control-plane v1.35.1node01 Ready <none> v1.35.1 My practice cluster contains two nodes: controlplanenode01 Both nodes were in the Ready state. 2. Working with…
Google Kubernetes Engine (GKE) provides a managed Kubernetes environment on Google Cloud. In this hands-on class, I created a GKE Standard cluster, explored its nodes and underlying Compute Engine VMs, deployed an NGINX Pod, created a ReplicationController, tested self-healing, and finally simulated node removal. This practical exercise helped me understand…
Category: Kubernetes, CKA, ReplicaSet, Labels, Selectors Introduction One of the biggest improvements of ReplicaSet over the old ReplicationController is its more expressive label selectors. ReplicationController supports only simple equality-based selectors such as: ReplicaSet introduces set-based selectors, allowing you to create much more flexible selection rules using matchExpressions. In this hands-on…
In this blog, I will demonstrate: What is ReplicationController? A ReplicationController (RC) ensures that a specified number of Pod replicas are always running. If a Pod crashes or is deleted accidentally, Kubernetes automatically creates another Pod. Responsibilities Lab-1: Create a Single Pod Create an nginx Pod. Output Check the Pod.…
