kube-wrench

An automated way on troubleshooting Kubernetes deployments. This tool is based on visual guide on troubleshooting Kubernetes deployment.

Pre-requisites

1. python3 and packages

2. pip3 needs to be installed to get required packages. You need to install above packages with command:x

   pip3 install -r requirements.txt

3. KUBECONFIG for the cluster needs to be exported as env. It is read by kube-wrench to connect to the cluster to get details.

How to run kube-wrench

running kube-wrench directly using python

Once above pre-requisites are installed and configured, you are ready to run kube-wrench as below after cloning the repo:

1. Change dir:

   cd kube-wrench

2. Run script:

   python3 kube-wrench.py

running by using docker image

Running through docker image would be much easier than installing dependencies on your machine. The docker image being used is based on python:3.8-slim-buster which is a very light weight version of python in docker.

If you want a ready-made env to run kube-wrench, please check dguyhasnoname/kube-wrench for latest image.

Pulling docker image:

docker pull docker.io/dguyhasnoname/kube-wrench:0.1.0

Running the docker image:

docker run -it --rm -v ~/k8sconfig/ct/:/app/k8sconfig/ -e KUBECONFIG=/app/k8sconfig/kubeconfig.yaml docker.io/dguyhasnoname/kube-wrench:0.1.0

kube-wrench help

python3 kube-wrench.py -h
usage: kube-wrench.py [-h] [-k KUBECONFIG] [-n NAMESPACE] [-o OUTPUT] [--loglevel LOGLEVEL] [--silent]

This script can be debug issues in a namespace in a Kubernetes cluster.

Before running script export KUBECONFIG file as env:
export KUBECONFIG=<kubeconfig file location>

e.g. export KUBECONFIG=/Users/dguyhasnoname/kubeconfig

ALternatively kubeconfig can be passed as argument.

optional arguments:
-h, --help            show this help message and exit
-k KUBECONFIG, --kubeconfig KUBECONFIG
                        pass kubeconfig of the cluster. If not passed, picks KUBECONFIG from env
-n NAMESPACE, --namespace NAMESPACE
                        check resources in specific namespace.
-o OUTPUT, --output OUTPUT
                        output formats json|text. Default is text on stdout.
--loglevel LOGLEVEL   sets logging level WARNING|DEBUG. default is INFO
--silent              silence the logging.

Sample run