InfraClaude

Instructions

Implementation Reference

• src/tools/kubernetes/nodes.ts:86-103 (handler)

  The handler function `cordonNode` that performs the actual K8s API call to cordon a node.

  export async function cordonNode(args: Record<string, unknown>): Promise<string> {
    const api = getCoreV1Api();
    const name = args.name as string;
    if (!name) throw new Error("Node name is required");
  
    await api.patchNode(
      name,
      { spec: { unschedulable: true } },
      undefined,
      undefined,
      undefined,
      undefined,
      undefined,
      { headers: { "Content-Type": "application/strategic-merge-patch+json" } }
    );
  
    return `Node '${name}' cordoned — no new pods will be scheduled on this node.`;
  }

• src/tools/kubernetes/index.ts:166-175 (registration)

  Registration of the `k8s_cordon_node` tool definition in the Kubernetes toolset.

    name: "k8s_cordon_node",
    description: "Mark a node as unschedulable (cordon) — prevents new pods from being scheduled",
    inputSchema: {
      type: "object" as const,
      properties: {
        name: { type: "string", description: "Node name" },
      },
      required: ["name"],
    },
  },