Chaos Toolkit experiement to ramdomly stop instances in an AZ (here eu-west-1b)

stop-random-instance-exp.json

{
    "version": "1.0.0",
    "title": "What is the impact of randomly terminating an instance in an AZ",
    "description": "terminating EC2 instance at random should not impact my app from running",
    "tags": ["ec2"],
    "configuration": {
        "aws_region": "eu-west-1"
    },
    "steady-state-hypothesis": {
        "title": "more than 0 instance in region",
        "probes": [
            {
              "provider": {
                "module": "chaosaws.ec2.probes",
                "type": "python",
                "func": "count_instances",
                "arguments": {
                  "filters": [
                    {
                        "Name": "availability-zone",
                        "Values": ["eu-west-1c"]
                    }
                  ]
                }
              },
              "type": "probe",
              "name": "count-instances",
              "tolerance": [0, 1]
            }
        ]
    },
    "method": [
        {
            "type": "action",
            "name": "stop-random-instance",
            "provider": {
                "type": "python",
                "module": "chaosaws.ec2.actions",
                "func": "stop_instance",
                "arguments": {
                    "az": "eu-west-1c"
                },
               "filters": [
                    {
                        "Name": "tag-key",
                        "Values": ["chaos-ready"]
                    }
                ]
            },
            "pauses": {
               "after": 60
             }
        }
    ],
    "rollbacks": [
        {
            "type": "action",
            "name": "start-all-instances",
            "provider": {
                "type": "python",
                "module": "chaosaws.ec2.actions",
                "func": "start_instances",
                "arguments": {
                "az": "eu-west-1c"
                 },
               "filters": [
                    {
                        "Name": "tag-key",
                        "Values": ["chaos-ready"]
                    }
                ]
            }
        }
    ]
}