kraph

THIS IS a PoC

kraph

kraph is an experimental Go module that allows to build a graph of API objects. The resulting graph can be represented as gonum.Graph which allows for advanced graph analysis!

You can query the resulting graph nodes and edges based on various attributes. Equally, you can also retrieve a subgraph of the graph starting with a chosen node and perform further analysis on it.

At the moment only kubernetes API object graph is implemented, but the module [hopefully] defines pluggable interfaces which should allow for adding the support for arbitrary APIs, such as AWS etc.

Getting started

The project provides a simple Makefile which makes basic tasks, such as running tests and building the module simple:

Get dependencies:

make dep

Run tests:

make test

Build module:

make build

kctl

There is also a simple command line utility which allows to build and query API object graphs in-memory and display the results.

At the moment it only provides build command with kubernetes/k8s subcommand which allows to build and query the kubernetes API object graph.

HOWTO

Run kctl make task to build the kctl binary:

Build:

make kctl

kctl command line options:

$ ./kctl help
NAME:
   kctl - build and query API object graphs

USAGE:
   kctl [global options] command [command options] [arguments...]

COMMANDS:
   build    build a graph
   help, h  Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --help, -h  show help (default: false)

kctl allows to dump the graph in DOT GraphViz format. This can be piped into GraphViz tool for further processing. kctl is in the pre-alpha state (if it can be called that at all!) and it's more of a debugging help tool at the moment as the focus of the project is the API graph mapping.

NOTE: You must have kubeconfig properly configured.

$ ./kctl build k8s -format "dot" | dot -Tsvg > cluster.svg && open cluster.svg

NOTE: dot format is the only available and default format so you can get the same results as above by running the command below, too:

$ ./kctl build k8s | dot -Tsvg > cluster.svg && open cluster.svg