Kueue MCP Server

Overview

Kueue MCP Server is a Go application that provides a set of Mark3 Labs MCP tools for OpenShift and Kueue troubleshooting and support automation. It exposes tools via an MCP server, allowing automated collection of cluster diagnostics and explanations for job and queue scheduling issues.

Features

• Must-Gather Tool: Runs oc adm must-gather with custom arguments to collect comprehensive cluster diagnostics.
• Explain Job Scheduling: (Stub) Intended to explain why a specific job is not scheduled.
• Local Queue Status: (Stub) Intended to provide information about workloads in a LocalQueue.
• Cluster Queue Status: Explains why no workloads are admitted in a ClusterQueue by running kubectl describe clusterqueue.

Usage

Building

To build the server binary:

make
# or manually:
go build -o kueue-mcp-server main.go

Running

Start the server (by default, it uses stdio for communication):

./kueue-mcp-server

The server will listen for MCP tool requests via stdio.

Code Structure

• main.go: Entry point. Registers tools and starts the MCP server.
• pkg/openshift/openshift.go: Implements the must-gather logic using oc.
• pkg/kueue/kueue.go: Implements cluster queue description using kubectl.
• pkg/mcp/mcp.go: (If present) May contain additional MCP tool definitions and handlers.

Extending

• Add new tools by defining them with mcp.NewTool and registering them in RegisterTools.
• Implement handlers to execute logic and return results via mcp.CallToolResult.

Requirements

• Go 1.20+
• Access to oc and kubectl CLIs in the environment where the server runs.
• OpenShift/Kubernetes cluster access (for must-gather and describe commands).

Example Tools

Must-Gather

Collects cluster data for support:

• Parameters:
  • dest_dir: Directory to write gathered data.
  • extra_args: Additional arguments for oc adm must-gather.

Cluster Queue Status

Explains why no workloads are admitted in a ClusterQueue:

• Parameters:
  • cluster_queue_name: Name of the ClusterQueue.

Integration With Claude Desktop

To use the Kueue MCP Server as a custom MCP tool in your Claude Desktop configuration:

1. Build and run the server
   Make sure the kueue-mcp-server binary is built and available on your system. Start the server so it listens for stdio requests:

   ./kueue-mcp-server
   

2. Add the tool to your Claude Desktop config

   • For Fedora, the following yaml could be used: I found the config in ~/.config/Claude/claude_desktop_config.json

   {
        "mcpServers": {
                "kubernetes": {
                        "command": "npx",
                        "args": [
                                "-y",
                                "kubernetes-mcp-server@latest"
                        ]
        },
        "kueue-mcp-server": {
            "command": "/path/to/kueue-mcp-server"
  }
  
}

• Replace /path/to/kueue-mcp-server with the full path to your built binary.
• Ensure stdin and stdout are enabled so Claude Desktop can communicate with the server.

3. Restart Claude Desktop
   After updating the configuration, restart Claude Desktop to load the new tool.

4. Use the tool
   The Kueue MCP Server tools (such as must-gather and cluster queue status) will now be available in Claude Desktop’s tool palette.