kubernetes-pod-chaos-monkey

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kubernetes-pod-chaos-monkey

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Randomly delete pods in a given namespace

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# Kubernetes Pod Chaos Monkey

This repository contains a `Dockerfile` and associated Kubernetes configuration for a Deployment that will randomly delete pods in a given namespace. This is implemented in Bash mostly because I'm writing it for a lightning talk.

An image built from the `Dockerfile` in this repository is available on Docker Hub as [`jnewland/kubernetes-pod-chaos-monkey`](https://hub.docker.com/r/jnewland/kubernetes-pod-chaos-monkey/).

### Configuration

A few environment variables are available for configuration:

* `DELAY`: seconds between selecting and deleting a pod. Defaults to `30`.
* `NAMESPACE`: the namespace to select a pod from. Defaults to `default`.

Example Kubernetes config is included at [`config/kubernetes/production/deployment.yaml`](./config/kubernetes/production/deployment.yaml)

### Example

```bash
$ kubectl apply -f config/kubernetes/production/deployment.yaml
deployment "kubernetes-pod-chaos-monkey" created
$ kubectl get pods | grep chaos
kubernetes-pod-chaos-monkey-3294408070-6w6oh   1/1       Running       0          19s
$ kubectl logs kubernetes-pod-chaos-monkey-3294408070-6w6oh
+ : 30
+ : default
+ true
+ xargs -t --no-run-if-empty kubectl --namespace default delete pod
+ head -n 1
+ shuf
+ tr ' ' '\n'
+ kubectl --namespace default -o 'jsonpath={.items[*].metadata.name}' get pods
kubectl --namespace default delete pod dd-agent-3hw6w
pod "dd-agent-3hw6w" deleted
+ sleep 30
```

## License

[MIT](./LICENSE.md)

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