Suite of Chaos tools for AWS

 Chaos Monkey is a software tool that was developed by Netflix engineers to test the resiliency and recoverability of their Amazon Web Services (AWS). 

The software simulates failures of instances of services running within Auto Scaling Groups (ASG) by shutting down one or more of the virtual machines.

Chaos Monkey works on the principle that the best way to avoid major failures is to fail constantly.

Chaos Monkey is not alone in the army. Since it was developed and its popularity rose, a whole suite of Chaos tools has been developed to simulate outages and test system response times.

Chaos engineers now have the Simian Army to work with and Chaos Monkey falls in ranks with:

• Chaos Kong drops a whole AWS Region.
• Chaos Gorilla drops a whole AWS Availability Zone.
• Latency Monkey simulates network outages or delays.
• Doctor Monkey performs health checks.
• Janitor Monkey identifies unused resources.
• Conformity Monkey identifies non-conforming instances based on a set of rules.
• Security Monkey tests for known vulnerabilities. End of life in 2020, with alternatives available.
• 10-18 Monkey detects configuration and run-time problems in instances serving customers in multiple geographic regions.