Articles
AWS RDS - does not create initial database
In mid 2019 AWS changed the Workflow for creating a new RDS Instance on the RDS service.This has caused a number of labs to break as an additional step is now needed to result in the RDS initialization creating the same result as the original workfl...
AWS security groups
Many lab problems stem from a poor understanding of what a Security Group is. This article describes it in basic terms so that students can understand and build from there. What is an AWS security group? A Security group is two things: It is a s...
Lambda troubleshooting
Background Lambda debugging is not significantly different from any debugging process. You need to have a mental model of how the system and application works, and look for the clues that narrow down the cause of the issues. All of our labs, and t...
Problem with AWS MFA setup
We have recently had a number of students report problems with setting up the AWS MFA on Google Authenticator. The problem Some students have reported that when they first try to set up the MFA as part of the course that when they enter the verifi...
SSH on Linux (syntax and passphrases)
SSH is the predominant remote management tool for administering Linux systems. Whether you are working between linux servers or from your Mac (which is basically pretty Linux) you will be using ssh to get a terminal/command line on the remote serve...