MCP Server K8s Lab - Unable to connect k8s-mcp-server

shayan.naeem007 · August 10, 2025, 2:36pm

Hi team,

I’m doing the Crash Course: MCP For Beginners. Its going great so far. However, on the last lab i’m unable to implement the same steps that are given in the solution. mcp.json file is given to connect to pre-build k8s-mcp-server however following the same step i’m unable to perform the tasks that are given in the instructions.

Please find the instructions & mcp.json file below:

Configuration Steps:

Click on the kangaroo icon to open Roo-Code
Click on the 3 servers icon at the top of Roo-Code
Go to Edit Project MCP
Add the following configuration to your MCP settings

mcp.json:
{
“mcpServers”: {
“k8s-mcp-server”: {
“command”: “sudo”,
“args”: [
“docker”,
“run”,
“-i”,
“–rm”,
“-v”,
“/home/lab-user/.kube/config:/home/appuser/.kube/config:ro”,
“ginnux/k8s-mcp-server:latest”,
“–mode”,
“stdio”
]
}
}
}

==================================
Error
Error executing MCP tool:
Not connected

Error
Unexpected API Response: The language model did not provide any assistant messages. This may indicate an issue with the API or the model’s output.