Upgrading instance class on Aurora cluster with terraform

We recently decided we want to upgrade one of our Aurora RDS clusters from db.r3.large to db.r4.large. Our entire environment is managed by Terraform. It was not clear from Terraform documentation what would happen if we just changed the instance size and applied the changes. Would Terraform be smart enough to upgrade the writer instance […]

AWS Adventures, Part 4 – CloudWatch network monitoring

CloudWatch is a great concept — super-easy to configure and inexpensive. And at first glance, it actually looks pretty nice. But after I spent about 30 minutes with it, I realized it wasn’t easy to use. The units used are especially hard to interpret. This is my best attempt to explain what the network values […]