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All Projects → adhorn → aws-chaos-scripts

adhorn / aws-chaos-scripts

Licence: MIT license
DEPRECATED Collection of python scripts to run failure injection on AWS infrastructure

Programming Languages

python
139335 projects - #7 most used programming language

Labels

awsdeprecatedchaos-monkeysoftware-engineeringsreamazon-web-serviceschaos-engineering

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DEPRECATED in favor of AWS Fault Injection Simulator (FIS)

https://docs.aws.amazon.com/fis/latest/userguide/fis-actions-reference.html#fis-actions-reference-fis

All scripts here have been ported to AWS FIS - See https://github.com/adhorn/aws-fis-templates-cdk

⚠️USE AT YOUR OWN RISK⚠️

Using these scripts may create an unreasonable risk. If you choose to use the scripts provided here in your own activities, you do so at your own risk. None of the authors or contributors, or anyone else connected with these scripts, in any way whatsoever, can be responsible for your use of the scripts contained in this repository. Use these scripts only if you understand what the code does

Collection of python scripts to inject failure in the AWS Infrastructure

  1. script-fail-az: simulate the lose of an Availability Zone (AZ) in a VPC.

       ❯ script-fail-az --help
   usage: script-fail-az   [-h] --region REGION --vpc-id VPC_ID --az-name AZ_NAME
             [--duration DURATION] [--limit-asg] [--failover-rds]
             [--failover-elasticache] [--log-level LOG_LEVEL]

    Simulate AZ failure: associate subnet(s) with a Chaos NACL that deny ALL
    Ingress and Egress traffic - blackhole

    optional arguments:
    -h, --help            show this help message and exit
    --region REGION       The AWS region of choice (default: None)
    --vpc-id VPC_ID       The VPC ID of choice (default: None)
    --az-name AZ_NAME     The name of the availability zone to blackout
                            (default: None)
    --duration DURATION   The duration, in seconds, of the blackout (default:
                            60)
    --limit-asg           Remove "failed" AZ from Auto Scaling Group (ASG)
                            (default: False)
    --failover-rds        Failover RDS if master in the blackout subnet
                            (default: False)
    --failover-elasticache
                         Failover Elasticache if primary in the blackout subnet
                            (default: False)
    --log-level LOG_LEVEL
                            Python log level. INFO, DEBUG, etc. (default: INFO)

  2. script-stop-instance: randomly kill an instance in a particular AZ if proper tags.

         ❯ script-stop-instance --help
     usage: script-stop-instance [-h] [--log-level LOG_LEVEL] --region REGION
                             --az-name AZ_NAME [--tag TAG]
                             [--duration DURATION]

     Script to randomly stop instance in AZ filtered by tag

     optional arguments:
     -h, --help            show this help message and exit
     --log-level LOG_LEVEL
                             Python log level. INFO, DEBUG, etc. (default: INFO)
     --region REGION       The AWS region of choice (default: None)
     --az-name AZ_NAME     The name of the availability zone of choice (default:
                             None)
     --tag TAG             Filter instances by tag name:value (default:
                             SSMTag:chaos-ready)
     --duration DURATION   Duration (s) before restarting the instance (default:
                             60)

  3. script-fail-rds: force RDS failover if master is in a particular AZ or if database ID provided.

         ❯ script-fail-rds --help
     script-fail-rds [-h] --region REGION --rds-id RDS_ID --vpc-id VPC_ID
                 --az-name AZ_NAME [--log-level LOG_LEVEL]

     Force RDS failover if master is in a particular AZ or if database ID provided

     optional arguments:
     -h, --help            show this help message and exit
     --region REGION       The AWS region of choice. (default: None)
     --rds-id RDS_ID       The Id of the RDS database to failover. (default:
                             None)
     --vpc-id VPC_ID       The VPC ID of where the DB is. (default: None)
     --az-name AZ_NAME     The name of the AZ where the DB master is. (default:
                             None)
     --log-level LOG_LEVEL
                             Python log level. INFO, DEBUG, etc. (default: INFO)

  4. script-fail-elasticache: force elasticache failover if primary node is in a particular AZ or if cluster name provided.

        ❯ script-fail-elasticache --help
    usage: script-fail-elasticache  [-h] --region REGION --elasticache-cluster-name
                       ELASTICACHE_CLUSTER_NAME --vpc-id VPC_ID --az-name
                       AZ_NAME [--log-level LOG_LEVEL]

     Force ElastiCache failover if master is in a particular AZ or if master node
     ID provided

     optional arguments:
     -h, --help            show this help message and exit
     --region REGION       The AWS region of choice. (default: None)
     --elasticache-cluster-name ELASTICACHE_CLUSTER_NAME
                             The cache cluster name to failover. (default: None)
     --vpc-id VPC_ID       The VPC ID where the primary node (master) is.
                             (default: None)
     --az-name AZ_NAME     The AZ where the primary node (master) is. (default:
                             None)
     --log-level LOG_LEVEL
                             Python log level. INFO, DEBUG, etc. (default: INFO)

Install and build the scripts

You have two options. Choose one of the options below

  • Building and using for production using Python Wheel
  • Building and using for dev or test (does not require Python Wheel)

Building and using for production

  1. Build a wheel.

    pip install wheel
python setup.py bdist_wheel

  2. The wheel file chaos_aws-1.0.0-py3-none-any.whl is in the the dist folder:

    cd dist

  3. Install the wheel with pip.

    pip install chaos_aws-1.0.0-py3-none-any.whl

  4. Run the script with its console script:

    script-fail-az --region eu-west-3 --vpc-id vpc-2719dc4e --az-name eu-west-3a --duration 60 --limit-asg --failover-rds --failover-elasticache
script-stop-instance --region eu-west-3 --az-name eu-west-3a --tag "chaos:ready"
script-fail-rds --region eu-west-3 --rds-id database-1
script-fail-rds --region eu-west-3 --vpc-id vpc-2719dc4e --az-name eu-west-3c
script-fail-elasticache --region eu-west-3 --vpc-id vpc-2719dc4e --az-name eu-west-3c
script-fail-elasticache --region eu-west-3 --elasticache-cluster-name chaoscluster

Building and using for dev or test

  1. Install requirements

    pip install -r requirements.txt

  2. Run the script with its console script:

    python scripts/fail_az.py --region eu-west-3 --vpc-id vpc-2719dc4e --az-name eu-west-3c --duration 60 --limit-asg --failover-rds --failover-elasticache
python scripts/stop_random_instance.py --region eu-west-3 --az-name eu-west-3a --tag "chaos:ready"
python scripts/fail_rds.py --region eu-west-3 --rds-id database-1
python scripts/fail_rds.py --region eu-west-3 --vpc-id vpc-2719dc4e --az-name eu-west-3c
python scripts/fail_elasticache.py --region eu-west-3 --vpc-id vpc-2719dc4e --az-name eu-west-3c
python scripts/fail_elasticache.py --region eu-west-3 --elasticache-cluster-name chaoscluster
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