Running Commands on EC2 On Demand
Building on the Systems Manager Session Manager setup, this guide covers how to run commands on EC2 instances using Run Command.
Cloud Magician
Cloud Magician
Using Patch Manager to Auto-Patch EC2 Instances
Following the Systems Manager Session Manager setup, this guide covers Patch Manager to automatically scan and install OS patches on EC2 instances on a schedule.
Managing EC2 on AWS with Systems Manager
This guide walks through the core concepts and setup steps for AWS Systems Manager, so you can securely manage EC2 instances without opening SSH ports.
Using Switch Role After Signing In to AWS
This article introduces AWS Console Switch Role for cross-account access, and shows how to configure Trust Relationship and Policy for safer daily operations.
Deep Dive: Understanding AWS IAM Role Permission Design
Deconstructing Policy and Trust Relationship: the division of responsibility in IAM Role
S3 Vector Bucket Hands-On: Turn the Latest Lingerie Catalog into a Searchable Vector Knowledge Base with Amazon Nova
S3 Vector Bucket Hands-On: Turn the Latest Lingerie Catalog into a Searchable Vector Knowledge Base with Amazon Nova
How to Choose a Primary Key: Auto Increment vs UUID vs Natural Keys
Should a database primary key use auto increment, UUID, or a natural key? This article compares the trade-offs from performance, security, and scalability perspectives.
AWS EKS IRSA Tutorial: How Pods Assume IAM Roles via Service Accounts
Learn how to configure IRSA in AWS EKS so Pods can assume IAM Roles through Kubernetes Service Accounts and securely access S3 and Secrets Manager without long-lived AWS credentials.
Java Date and Time Guide: Date, Calendar, and java.time Explained
A practical guide to handling date and time in Java, from the legacy Date, Calendar, and SimpleDateFormat APIs to Java 8 java.time, Instant, LocalDate, and ZonedDateTime.
AWS Trivia: Why Do IAM Policies Almost Always Use Version 2012-10-17?
Why do AWS IAM policies almost always use Version 2012-10-17? This post explains what that version actually means, how it differs from service API versions, and what happens if you leave it out.