MCP Server Deployment for Todo AI Chatbot

This solution addresses the 500 errors occurring in the Todo AI Chatbot UI by deploying the missing MCP (Model Context Protocol) server to your Kubernetes cluster.

Problem

• Backend is running fine and returning 200 responses internally
• Chatbot UI shows 500 errors
• Backend cannot reach its MCP server (MCP_SERVER_URL: http://mcp-server:8002)
• MCP service is not deployed in the cluster

Solution

Deploy MCP server with Kubernetes Deployment and Service that:

• Uses Docker image: my-org/mcp-server:latest
• Exposes port 8002 internally
• Can be reached by backend pod at http://mcp-server:8002
• Is scalable with 2 replicas
• Has resource requests: cpu=100m, memory=128Mi; limits: cpu=200m, memory=256Mi
• Includes liveness and readiness probes

Files Created

mcp-server-deployment.yaml

Contains the Deployment configuration for the MCP server with:

• 2 replicas for high availability
• Resource requests and limits
• Environment variables
• Liveness and readiness probes

mcp-server-service.yaml

Contains the Service configuration that exposes the MCP server internally within the cluster at http://mcp-server:8002

deploy-mcp-server.sh

Script with commands to deploy and verify the MCP server in your Minikube cluster

Deployment Steps

1. Ensure your Minikube cluster is running:

   minikube start
   

2. Create the namespace and deploy the MCP server:

   kubectl create namespace todo-chatbot --dry-run=client -o yaml | kubectl apply -f -
   kubectl apply -f mcp-server-deployment.yaml
   

3. Verify the deployment:

   kubectl get deployments -n todo-chatbot
   kubectl get pods -n todo-chatbot
   kubectl get services -n todo-chatbot
   kubectl rollout status deployment/mcp-server -n todo-chatbot
   

4. Check the logs to ensure the MCP server is running properly:

   kubectl logs -l app=mcp-server -n todo-chatbot
   

Expected Result

After deploying the MCP server, the backend should be able to connect to it at http://mcp-server:8002, and the 500 errors in the chatbot UI should be resolved.