Kubesurveyor

Good enough Kubernetes namespace visualization tool.
No provisioning to a cluster required, only Kubernetes API is scrapped.

Installation

sudo apt-get install graphviz
pip install kubesurveyor

Usage

Export path to a custom certification authority, if you use one for your Kubernetes cluster API

export REQUESTS_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crt

Alternatively, ignore K8S API certificate errors using --insecure or -k

kubesurveyor <namespace> --insecure

Show <namespace> namespace as a dot language graph, using currently active K8S config context

kubesurveyor <namespace>

Specify context to be used, if there are multiple in the K8S config file

kubesurveyor <namespace> --context <context>

Dump crawled namespace data to a YAML format for later processing

kubesurveyor <namespace> --context <context> --save > namespace.yaml

Load from YAML file, show as dot language graph

cat namespace.yaml | kubesurveyor <namespace> --load

Load from YAML file and render as png visualization to a current working directory

cat namespace.yaml | kubesurveyor <namespace> --load --out png

If you want to generate architecture image from dot definition by hand, use dot directly

dot -Tpng k8s.dot > k8s.png

Limitations:

• unconnected pods, services are not shown
• could have problems with deployments created by Tiller
• number of replicas is not tracked