Configuration language

go-chaos uses HCL for the configuration language.

Why HCL was chosen

• Unlike other formats, HCL is easily readable by machines and people.
• It doesn’t have such problems with indenting like yaml does.
• It can be parsed by several languages.

Simple config

app = "my awesome prod app"
description = "This app runs over EC2, experiment consists on terminate 5 instances in us-east-1 region" 
    
job "aws" "ec2" {
    region = "us-east-1"
    config "chaos" {
        tag = "Name:app-prod"
        chaos = "terminate"
        count = 5
    }
}

go-chaos will look for EC2 instances in the region us-east-1 with the tag Name:app-prod, randomly select 5 and terminate those them.