Geekops Jab

Introduction Ansible is a powerful open-source automation tool that simplifies IT tasks such as configuration management, application deployment, and task automation. Its agentless architecture and simple YAML-based playbooks make it a favorite among IT professionals. In this blog post, we’ll explore Ansible’s key components, its working process, and some common use cases. Key Components of Ansible Control Node: This is the machine where Ansible is installed. It controls the entire automation process by executing playbooks on managed nodes.  Managed Nodes: These are the target machines that Ansible manages. They can be servers, cloud instances, or network devices.  Inventory: This is a file that lists all the managed nodes. It can be a simple text file or a dynamic inventory script that fetches the list of nodes from a cloud provider.  Modules: These are small programs that Ansible pushes out from the control node to the managed nodes. They perform specific tasks like...

Amazon ECS (Elastic Container Service) is a highly scalable and fast container management service that allows you to manage containers on a cluster. It’s a powerful tool for deploying and running containerized applications. Here are the essential aspects of Amazon ECS: Key Components: Clusters:  Clusters are logical groupings of container instances. These instances can be either EC2 instances or Fargate tasks. A cluster acts as the compute layer for ECS, providing the resources needed to run your containers. Container Instances: Container instances are either EC2 instances or Fargate serverless compute units. They run your containerized applications. EC2 instances are part of an ECS cluster and can host multiple containers. Fargate tasks are serverless and abstract away the underlying infrastructure. Tasks: Tasks represent units of work defined by a container image, memory/CPU requirements, and other configurations. Each task runs one or more containers. You define tasks using task...

Amazon Lightsail is a cloud-based Virtual Private Server (VPS) service designed for simplicity and cost-effectiveness. It’s an excellent choice for developers, small businesses, and beginners who want to deploy web applications, host websites, or create development environments without the complexity of managing infrastructure directly. Key Components: Instance Plans: Choose from various instance plans based on your workload and budget. These plans determine the resources (CPU, RAM, storage) allocated to your server. Lightsail offers pre-configured development stacks (e.g., LAMP, Nginx, MEAN, Node.js) for quick setup. AWS Region and Availability Zone: Select the region and availability zone where your server will be deployed. Optimize performance by choosing a nearby region. Blueprints: Blueprints are predefined configurations for specific use cases (e.g., WordPress, Joomla, GitLab). Pick a blueprint that aligns with your project. Networking: Configure networking settings, including fi...

Amazon DynamoDB is designed for applications that require low-latency data access, flexible data models, and seamless scalability. It provides fast and predictable performance, making it ideal for internet-scale applications.  Here are some key features: Managed Service: DynamoDB is fully managed by AWS, which means you don’t need to worry about infrastructure provisioning, scaling, or maintenance. NoSQL Database: It follows a NoSQL data model, allowing you to store and retrieve data without the constraints of a fixed schema. Seamless Scalability: DynamoDB automatically scales to handle varying workloads and traffic spikes. High Availability: Data is replicated across multiple Availability Zones (AZs) for durability and fault tolerance. Flexible Data Models: You can choose between key-value and document data models. Key Components of DynamoDB Tables: The fundamental unit of storage in DynamoDB. Each table consists of items (records) with a primary key. Primary Key: Partition Ke...

Amazon RDS (Relational Database Services) is a powerful web service that streamlines the setup, operation, and scalability of relational databases within the AWS Cloud. Whether you’re building web applications, SaaS platforms, or diving into business analytics, RDS provides a robust foundation for your data needs. Key Components Database Engines: RDS supports various database engines, including MySQL, PostgreSQL, Oracle, Microsoft SQL Server, and Amazon Aurora. Choose the engine that best fits your application requirements. Automated Backups: RDS automatically backs up your database at specified intervals. You can restore to any point in time within your retention window. Monitoring and Metrics: RDS provides performance insights through Amazon CloudWatch with cases like monitoring CPU utilization, data storage, and query performances. Security and Encryption: RDS encrypts data at rest using keys managed by AWS Key Management Service (KMS). How It Works Database Creation: Create an RDS...

Amazon Route 53 is a highly available and scalable Domain Name System (DNS) service that plays a crucial role in connecting user requests to various services running in the AWS cloud. Whether you’re managing domain names, optimizing traffic flow, or ensuring high availability, Route 53 has got you covered. Key Components DNS Management: Route 53 allows you to register domain names and manage DNS records (like A, CNAME, and MX records). You can create hosted zones to organize your DNS records for different domains. Health checks monitor the availability of your resources (e.g., EC2 instances, S3 buckets) and automatically route traffic away from unhealthy endpoints. Traffic Management: Routing Policies: Simple Routing: Directs traffic to a single resource (e.g., an EC2 instance). Weighted Routing: Distributes traffic based on assigned weights (useful for A/B testing). Latency-Based Routing: Routes users to the lowest-latency endpoint. Geolocation Routing: Routes traffic based on user lo...

As you know my everyday driver is a Windows 10 PC and I usually can't go for another system which is as smooth and user-friendly as it gets. But I have few unpleasant quirks with my daily driver which does not allow me to experiment with opensource software packages and builds, which usually oriented towards Linux gear. Previously my dependency was with Vagrant, cause its easily available boxes, configuration management abilities and cli mode approach. But from recent days, I started to feel a bit distanced with the Vagrant tool, that became a bit sloth on its own. So, we got an alternate tool to handle my VM jobs. Introducing VMWare Workstation 16 Player (works well with Windows Hyper-V platform) which comes with GUI features. Compared to Vagrant, VMWare Workstation is not a CLI only tool and has more towards UI approach. So, in this blogs lets dive into the steps, I took to setup Concourse CI on top of Rocky Linux for my Devops CI/CD lab experiments. Prerequisite: Get the VMWare ...

Amazon Web Services (AWS) provides a powerful networking service called Amazon Virtual Private Cloud (VPC). In this blog post, we’ll delve into what VPC is, explore its functions, and provide practical examples to illustrate its capabilities. What is Amazon VPC? Amazon VPC is a virtual network dedicated to your AWS account. It allows you to create isolated network environments within the AWS cloud. Here are the key features of VPC: Custom IP Address Range: You can define your own IP address range for your VPC. Subnets: Divide your VPC into subnets to organize resources and control network traffic. Routing: Configure route tables to direct traffic between subnets and to external networks. Security Groups: Set up security rules to control inbound and outbound traffic. Connectivity Options: VPCs can be connected to the internet, other VPCs, or on-premises networks. Components of Amazon VPC 1. Subnet Function: A subnet is a defined range of IP addresses within your VPC. Purpose: Organize r...

In the dynamic world of cloud computing, Elastic Load Balancers (ELBs) play a crucial role in ensuring high availability, scalability, and efficient distribution of incoming traffic across backend servers. In this blog post, we’ll delve into the fundamentals of AWS ELBs, explore their types, and provide practical examples. What is Elastic Load Balancing? Elastic Load Balancing is a service provided by Amazon Web Services (AWS) that automatically distributes incoming traffic across a group of backend servers. Here’s why it matters: Scalability: ELBs allow your application to handle increased traffic by distributing it efficiently. Fault Tolerance: If any backend server fails, ELBs automatically route traffic away from the unhealthy target. Security: ELBs enhance security by acting as a single entry point for incoming requests. Types of AWS Load Balancers 1. Classic Load Balancer (CLB) The traditional form of load balancer. Distributes traffic among instances. Operates at both the connec...

Amazon CloudWatch is a powerful monitoring and observability service provided by Amazon Web Services (AWS). It allows you to track and analyze the performance of your AWS resources in real-time. Whether you’re a developer, DevOps engineer, or IT manager, CloudWatch provides valuable insights to optimize your applications and infrastructure. In this blog post, we’ll explore what CloudWatch is, its features, and provide straightforward examples to help you understand its usage. What is Amazon CloudWatch? Amazon CloudWatch collects and stores operational data in the form of logs, metrics, and events. Here are some key points: Metrics: CloudWatch Metrics represent time-ordered data points related to your AWS resources. These metrics can be CPU utilization, memory usage, disk I/O, and more. Metrics are uniquely defined by a name, namespace, and dimensions. Logs: CloudWatch Logs allow you to collect, monitor, and analyze log files from your applications and services. You can use custom fil...

AWS CloudTrail is a powerful service offered by Amazon Web Services (AWS) that allows you to track and document activities within your AWS infrastructure. Whether you’re managing resources, services, or user accounts, CloudTrail provides a detailed event history of every action taken. In this blog post, we’ll explore what CloudTrail is, its benefits, and provide straightforward examples to help you understand its usage. What is AWS CloudTrail? AWS CloudTrail records API calls and actions made within your AWS account. Here are some key points: Event History:  By default, your AWS account has CloudTrail activated, and you have immediate access to the CloudTrail Event history. This history provides a viewable, searchable, printable, and immutable record of the last 90 days’ worth of management events in an AWS Region. These events include actions performed via the AWS Management Console, AWS Command Line Interface (CLI), and AWS SDKs and APIs. CloudTrail Lake: For more advanced use c...

AWS Lambda is a serverless compute service provided by Amazon Web Services (AWS). It allows you to run code without provisioning or managing servers. You only pay for the compute time you consume, making it cost-effective and efficient. In simple words, AWS Lambda lets you execute code in response to events, such as file uploads, scheduled tasks, or messages published to an SNS topic. Let’s dive deeper into how it works and explore some practical examples. How AWS Lambda Works Event Triggers : Lambda functions are triggered by events. Some examples include: A file uploaded to Amazon S3 (cloud storage service). A cron job that runs your function at regular intervals. A message published to an SNS topic (a publish-subscribe service). Function Execution : When an event occurs, AWS Lambda automatically provisions compute resources to run your code. It executes your function in an isolated environment. Scaling : Lambda scales automatically based on the incoming workload. If many events occ...

Amazon S3 (Simple Storage Service) is a powerful cloud-based storage solution provided by Amazon Web Services ( AWS ). It allows you to store and retrieve data securely from anywhere on the web. Whether you’re a developer, a business owner, or just curious about cloud storage, this guide will help you understand the basics of Amazon S3. Key Concepts Buckets: Think of an Amazon S3 bucket as a virtual container for your files. It’s like a folder in the cloud where you can organize and store your data. Buckets have unique names (similar to domain names) and are globally accessible. Objects: Objects are the files you store in an S3 bucket. These can be anything: documents, images, videos, backups, or even cat memes!. Each object has a unique key (similar to a file path) within the bucket. Scalability and Durability: Amazon S3 is highly scalable. You can store as little as a single file or as much as petabytes of data. It’s also incredibly durable. Your data is redundantly stored across mu...

Amazon Web Services (AWS) offers a plethora of services, and Identity and Access Management (IAM) is a critical component for securing your AWS resources. In this blog post, we’ll demystify IAM, explore its features, and provide straightforward examples to help you grasp its importance. What is IAM? IAM stands for Identity and Access Management . Let’s break it down: Identity : IAM helps you manage users, groups, and roles within your AWS account. These identities are essential for controlling access to AWS resources. Access Management : IAM allows you to define who can do what in your AWS environment. You can grant or restrict permissions based on roles and policies. Why Do We Need IAM? Before IAM, managing access was chaotic: Shared Passwords : People shared passwords over insecure channels like email or phone calls. Single Admin Password : Only one admin password existed, stored in a vulnerable location. Lack of Security : Anyone could eavesdrop and gain unauthorized access. IAM s...