TIL: Testing an Amazon Cloudwatch alarm
Today I was setting up an application load balancer that sits in front of a test application I have put together. Setting this up was super easy, and very quickly I had my domain pointing to the alias and serving requests.
As part of the setup, I wanted to monitor the application load balancer to let me know when requests were failing to the downstream application (anything other than an HTTP 200) and so I set this up super easily in Amazon Cloudwatch. I now had monitoring and a nice dashboard that gave me the health of the application from the application load balancer perspective.