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Setting up ChaosToolkit Execution Environment

mikotian
not your usual QA guy
・1 min read

Base Setup

Install Python 3.5 on your execution machine.

Windows : Download the latest binary installer from the Python website.

Linux: https://www.python.org/download/other/

Create a virtual environment. Virtual environments help us encapsulate our changes away from the larger system.

python3 -m venv ~/.venvs/resilient

source ~/.venvs/resilient/bin/activate
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Install chaostoolkit

pip install chaostoolkit
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Verify version

chaos --version
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This will install the base version of chaostoolkit with its inbuilt probes, tolerances & actions.

Install AWS Drivers

pip install -U chaostoolkit-aws
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Passing Credentials to ChaosToolkit.

For AWS actions/probes to work as expected we need to place a credentials file like below in the following location. ~/.aws

The credentials can be added in the experiment itself, like so

{
  "secrets": {
    "aws": {
      "aws_access_key_id": "your key",
      "aws_secret_access_key": "access key",
      "aws_session_token": "token"
    }
  }
}
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Thats it, you're all set to run AWS Chaos/resiliency experiments!

Install Toxiproxy Drivers

Install Toxiproxy Server from here: (https://github.com/Shopify/toxiproxy/releases)

Install the toxiproxy CLI (https://github.com/Shopify/toxiproxy/releases)

These are required in order to make the network changes work.

Install the chaos toolkit drivers:

pip install -U chaostoolkit-toxiproxy
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Add the following configuration to your experiment.

"configuration": {
    "toxiproxy_host" : "10.124.23.183",
    "some_environment_variable": {
      "type": "environment",
      "key": "ENVIRONMENT_VARIABLE"
    }
  }
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Start the toxiproxy server.

Now you are ready to run the experiment.

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