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How to Delete AWS Lambda Logs from CloudWatch Using Python Scripts
Lambda functions create CloudWatch log groups automatically, and they never clean up after themselves. Over time you end … Read more
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Safely Moving Uncommitted Changes to a New Branch in Git
You’re working on something and realize you’re on the wrong branch — maybe you started coding on main … Read more
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How to Build and Deploy Python Libraries for AWS Lambda Layers
Lambda Layers let you package Python libraries once and share them across multiple Lambda functions. Instead of bundling … Read more
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Granting AWS Glue Crawler Access to a Cross-Account S3 Bucket
When your data lives in one AWS account and your Glue Crawler runs in another, you need to … Read more
311 views
Resolving Jenkins SSH Connection Errors for Mac Users
If you’re setting up a Jenkins SSH connection on macOS and getting a “Can’t connect to server” error, … Read more
916 views
How to Copy Files to Amazon EC2 Ubuntu Instance Using Rsync
Rsync is the fastest way to copy files between your local machine and an EC2 instance. Unlike scp, … Read more
475 views
How to Install MongoDB Community Edition on an EC2 Ubuntu 22.04
This guide walks you through how to install MongoDB Community Edition on EC2 Ubuntu 22.04 using MongoDB’s official … Read more
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How to Completely Remove (Purge) MySQL from Ubuntu 22.04
Sometimes you need to completely remove MySQL from Ubuntu — maybe you’re switching to PostgreSQL or MariaDB, fixing … Read more
387 views
Handling IP Address Overlapping in Network Connections
IP address overlapping happens when two or more networks use the same CIDR range. When you try to … Read more
325 views
How to Design IP Addressing for Amazon VPC and Subnets
Getting your VPC IP addressing wrong is painful to fix later — you can’t resize a subnet after … Read more