generate_k8s_diagram.sh

generate_k8s_diagram.sh

#!/bin/sh

# Configuration
namespace="bitwarden"
label="app.kubernetes.io/name=self-host"
output_file="bitwarden-diagram.png"

# Generate YAML for all namespaced resources with the given label
# and pipe them into kube-diagrams for visualization.
{
  for resource in $(kubectl api-resources --namespaced -o name); do
    # Skip endpoints and endpointslices
    if [ "$resource" = "endpoints" ] || [ "$resource" = "endpointslices" ] || [ "$resource" = "replicasets" ] || [ "$resource" = "replicaset" ] || [ "$resource" = "replicasets.apps" ] || [ "$resource" = "endpointslices.discovery.k8s.io" ]; then
      continue
    fi

    count=$(kubectl get "$resource" -n "$namespace" -l "$label" -o json 2>/dev/null | jq '.items | length')
    if [ "$count" -gt 0 ]; then
      echo "# Resource: $resource" >&2
      kubectl get "$resource" -n "$namespace" -l "$label" -o yaml
      echo "---"
    fi
  done
} | /opt/homebrew/bin/kube-diagrams -o "$output_file" -

echo "✅ Diagram saved as $output_file"