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# Kubernetes Binaries Versions Inspector
**Kubernetes Binaries Versions Inspector** (`k8s_bin_versions_inspector`) is a
python module for verifying versions of CPython and OpenJDK binaries installed
in the kubernetes cluster containers.
## Commands
### Install dependencies
To install dependencies for normal usage of script, run this command.
```bash
pip3 install -r requirements.txt
```
### Code formatting
```bash
black src tests
```
### Code static analysis
```bash
pylint -d C0330 src
```
### Automatic tests
To running the automated tests is required to have properly configured
kubernetes cluster, which is in the virtual machine, that is containing
development environment.
```bash
PYTHONPATH=src pytest -vv -s tests
```
### Removing caches
```bash
find -name __pycache__ -exec rm -Rf {} +
find -name .pytest_cache -exec rm -Rf {} +
```
## Acceptable format
Example of the acceptable file format:
```yaml
python:
- 3.6.9
- 3.7.3
java:
- 11.0.7
```
## Paths research
Commands to research for the paths
of the software binaries in multiple docker images:
```bash
docker run --entrypoint /bin/sh python:buster -c "which python"
docker run --entrypoint /bin/sh python:alpine -c "which python"
docker run --entrypoint /bin/sh python:slim -c "which python"
docker run --entrypoint /bin/sh python:2-buster -c "which python"
docker run --entrypoint /bin/sh python:2-alpine -c "which python"
docker run --entrypoint /bin/sh python:2-slim -c "which python"
docker run --entrypoint /bin/sh ubuntu:bionic -c "apt-get update && apt-get install -y python && which python"
docker run --entrypoint /bin/sh ubuntu:bionic -c "apt-get update && apt-get install -y python3 && which python3"
docker run --entrypoint /bin/sh openjdk -c "type java"
```
## Todo
List of features, that should be implemented:
- Complete license and copyrights variables.
- Find a way, to safe searching of the container files from Kubernetes API.
- Parallelization of executing binaries on the single container.
- Parallelization of versions determination in multiple containers.
- Support for determination the old versions of OpenJDK (attribute `-version`).
- Deleting namespace from cluster in development environment (for example,
during cluster reset), cause hanging in namespace terminating state.
- Find a nicer way to extracting exit code from execution result.
## Links
- <https://github.com/kubernetes-client/python>
- <https://github.com/kubernetes-client/python/issues/812>
- <https://success.docker.com/article/kubernetes-namespace-stuck-in-terminating>
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