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chaostoolkit-istio-0.2.1
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Chaos Toolkit Extension for Istio Fault Injection
| ویژگی | مقدار |
|---|---|
| سیستم عامل | OS Independent |
| نام فایل | chaostoolkit-istio-0.2.1 |
| نام | chaostoolkit-istio |
| نسخه کتابخانه | 0.2.1 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | chaostoolkit Team |
| ایمیل نویسنده | contact@chaostoolkit.org |
| آدرس صفحه اصلی | http://chaostoolkit.org |
| آدرس اینترنتی | https://pypi.org/project/chaostoolkit-istio/ |
| مجوز | Apache License Version 2.0 |
# Chaos Toolkit Extension for Istio Fault Injection
[](https://travis-ci.org/chaostoolkit-incubator/chaostoolkit-istio)
[](https://www.python.org/)
This project is a collection of [actions][] and [probes][], gathered as an
extension to the [Chaos Toolkit][chaostoolkit].
[actions]: http://chaostoolkit.org/reference/api/experiment/#action
[probes]: http://chaostoolkit.org/reference/api/experiment/#probe
[chaostoolkit]: http://chaostoolkit.org
## Install
This package requires Python 3.6+
To be used from your experiment, this package must be installed in the Python
environment where [chaostoolkit][] already lives.
```
$ pip install -U chaostoolkit-istio
```
## Usage
Below is an example of using this extension to inject a delay of 5 seconds to
a specific user.
Note this example can be applied against the
[bookinfo Istio sample application](https://istio.io/docs/examples/bookinfo/).
To run it, simple set the `KUBERNETES_CONTEXT` environment variable to the
target cluster and ensure your local kubeconfig is properly populated for that
context. Set also the `PRODUCT_PAGE_SERVICE_BASE_URL` to the address of the
Istio gateway.
For instance:
```
$ export PRODUCT_PAGE_SERVICE_BASE_URL=$(kubectl get po -l istio=ingressgateway -n istio-system -o 'jsonpath={.items[0].status.hostIP}'):$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="http2")].nodePort}')
```
```json
{
"title": "Network latency does not impact our users",
"description": "Using Istio fault injection capability, let's explore how latency impacts a single user",
"configuration": {
"product_page_url": {
"type": "env",
"key": "PRODUCT_PAGE_SERVICE_BASE_URL"
}
},
"secrets": {
"istio": {
"KUBERNETES_CONTEXT": {
"type": "env",
"key": "KUBERNETES_CONTEXT"
}
}
},
"steady-state-hypothesis": {
"title": "Our service should respond under 1 second",
"probes": [
{
"type": "probe",
"name": "sign-in-as-jason",
"tolerance": 0,
"provider": {
"type": "process",
"path": "curl",
"arguments": "-v -X POST -d 'username=jason&passwd=' -c /tmp/cookie.txt --silent ${product_page_url}/login"
}
},
{
"type": "probe",
"name": "fetch-productpage-for-jason-in-due-time",
"tolerance": 0,
"provider": {
"type": "process",
"path": "curl",
"arguments": "-v --connect-timeout 1 --max-time 1 -b /tmp/cookie.txt --silent ${product_page_url}/productpage"
}
}
]
},
"method": [
{
"type": "action",
"name": "inject-fault-for-jason-only",
"provider": {
"type": "python",
"module": "chaosistio.fault.actions",
"func": "add_delay_fault",
"secrets": ["istio"],
"arguments": {
"virtual_service_name": "reviews",
"fixed_delay": "5s",
"percentage": {
"value": 100.0
},
"routes": [
{
"destination": {
"host": "reviews",
"subset": "v2"
}
}
]
}
},
"pauses": {
"after": 2
}
}
],
"rollbacks": [
{
"type": "action",
"name": "remove-fault-for-jason-only",
"provider": {
"type": "python",
"module": "chaosistio.fault.actions",
"func": "remove_delay_fault",
"secrets": ["istio"],
"arguments": {
"virtual_service_name": "reviews",
"routes": [
{
"destination": {
"host": "reviews",
"subset": "v2"
}
}
]
}
}
}
]
}
```
That's it!
Please explore the code to see existing probes and actions.
## Configuration
This extension needs you specify how to connect to the Kubernetes cluster. This
can be done by setting the `KUBERNETES_CONTEXT` in the `secrets` payload.
## Contribute
If you wish to contribute more functions to this package, you are more than
welcome to do so. Please, fork this project, make your changes following the
usual [PEP 8][pep8] code style, sprinkling with tests and submit a PR for
review.
[pep8]: https://pycodestyle.readthedocs.io/en/latest/
The Chaos Toolkit projects require all contributors must sign a
[Developer Certificate of Origin][dco] on each commit they would like to merge
into the master branch of the repository. Please, make sure you can abide by
the rules of the DCO before submitting a PR.
[dco]: https://github.com/probot/dco#how-it-works
### Develop
If you wish to develop on this project, make sure to install the development
dependencies. But first, [create a virtual environment][venv] and then install
those dependencies.
[venv]: http://chaostoolkit.org/reference/usage/install/#create-a-virtual-environment
```console
$ pip install -r requirements-dev.txt -r requirements.txt
```
Then, point your environment to this directory:
```console
$ python setup.py develop
```
Now, you can edit the files and they will be automatically be seen by your
environment, even when running from the `chaos` command locally.
### Test
To run the tests for the project execute the following:
```
$ pytest
```
نیازمندی
| مقدار | نام |
|---|---|
| ~=1.19 | chaostoolkit-lib |
| ~=1.5 | logzero |
| ~=3.16 | simplejson |
| ~=17.0 | kubernetes |
زبان مورد نیاز
| مقدار | نام |
|---|---|
| >=3.7.* | Python |
نحوه نصب
نصب پکیج whl chaostoolkit-istio-0.2.1:
pip install chaostoolkit-istio-0.2.1.whl
نصب پکیج tar.gz chaostoolkit-istio-0.2.1:
pip install chaostoolkit-istio-0.2.1.tar.gz