rlister/cadvisor-autoscaling repository overview

⁠cAdvisor Autoscaling

⁠Wut?

So, I had this VPC in AWS, pretty locked-down and minimalist, and inside this VPC ran several microservices from autoscaling groups, and I was all like, what's running?

So this runs inside your VPC, gets a list of instances for your autoscaling groups, and hits cAdvisor on each instance private IP to find out what containers are running. Simples.

⁠Configure

Set env vars:

AWS_REGION
AWS_ACCESS_KEY_ID
AWS_SECRET_ACCESS_KEY

or, actually, don't. Use IAM roles instead like the cool kids. Actually, you probably still have to set AWS_REGION even then. What's up with that, Amazon?

Limit set of autoscaling groups to list by setting CADVISOR_AUTOSCALING_MATCH to a regex to match group name.

⁠Run

bundle exec unicorn -p 3000 -c config/unicorn.rb

⁠Docker

Comes with a Dockerfile. Build your own, or pull from hub.

docker run -d -e CADVISOR_AUTOSCALING_MATCH='^foo-' -p 3000:3000 rlister/cadvisor-autoscaling