k8s-pilot

Instructions

Implementation Reference

• tools/namespace.py:205-258 (handler)

  The main handler function for the 'remove_namespace_label' MCP tool. It removes a specified label from a Kubernetes namespace using the CoreV1Api. Includes decorators for MCP tool registration (@mcp.tool()), context usage (@use_current_context), and permission checks (@check_readonly_permission). Returns JSON with updated labels or error messages.

  @mcp.tool()
  @use_current_context
  @check_readonly_permission
  def remove_namespace_label(context_name: str, namespace: str, label_key: str):
      """
      Remove a label from a namespace.
  
      Args:
          context_name: The Kubernetes context name
          namespace: The name of the namespace
          label_key: The label key to remove
  
      Returns:
          JSON string containing the updated namespace labels
      """
      core_v1: CoreV1Api = get_api_clients(context_name)["core"]
  
      try:
          # Get the current namespace
          ns = core_v1.read_namespace(namespace)
  
          # Check if the namespace has labels
          if not ns.metadata.labels or label_key not in ns.metadata.labels:
              result = {
                  "name": namespace,
                  "labels": ns.metadata.labels,
                  "message": f"Label '{label_key}' not found on namespace"
              }
              return json.dumps(result)
  
          # Update the labels
          labels = dict(ns.metadata.labels)
          del labels[label_key]
  
          # Apply the patch
          body = {
              "metadata": {
                  "labels": labels
              }
          }
  
          patched_ns = core_v1.patch_namespace(namespace, body)
  
          result = {
              "name": patched_ns.metadata.name,
              "labels": patched_ns.metadata.labels
          }
  
          return json.dumps(result)
      except ApiException as e:
          if e.status == 404:
              return json.dumps({"error": f"Namespace '{namespace}' not found"})
          else:
              return json.dumps({"error": f"Failed to remove label: {str(e)}"})