Multi Cluster Kubernetes MCP Server

An MCP (Model Context Protocol) server for managing multiple Kubernetes clusters simultaneously. Provides 60+ tools covering cluster operations, resource management, monitoring, RBAC, storage, networking, and more -- all accessible through AI assistants like Claude Desktop.

Quick Start

Installing via Smithery

hljs language-bash

npx -y @smithery/cli install @razvanmacovei/k8s-multicluster-mcp --client claude

Manual Installation

hljs language-bash

git clone https://github.com/razvanmacovei/k8s-multicluster-mcp.git
cd k8s-multicluster-mcp
python3 -m venv .venv && source .venv/bin/activate
pip install -r requirements.txt
python3 app.py

Docker

hljs language-bash

docker build -t k8s-mcp .
docker run -v ~/.kube:/root/.kube k8s-mcp

Configuration

Claude Desktop / MCP Client

Add to your MCP client configuration:

hljs language-json

{
  "mcpServers": {
    "kubernetes": {
      "command": "python3",
      "args": ["/path/to/k8s-multicluster-mcp/app.py"],
      "env": {
        "KUBECONFIG_DIR": "/path/to/your/kubeconfigs"
      }
    }
  }
}

Environment Variables

Variable	Default	Description
`KUBECONFIG_DIR`	`~/.kube`	Directory containing kubeconfig files. Each file can contain one or more contexts.

Place your kubeconfig files in the configured directory. The server discovers all contexts across all files automatically.

Prerequisites

Python 3.11 or higher
One or more kubeconfig files with valid cluster credentials
metrics-server installed in clusters for k8s_top_* and k8s_cluster_info tools

Multi-Cluster Management

This server is purpose-built for managing multiple Kubernetes clusters:

Automatic Discovery: Scans all kubeconfig files in KUBECONFIG_DIR and aggregates contexts
Partial Name Matching: Use prod instead of arn:aws:eks:us-east-1:123456:cluster/prod-cluster
Cross-Cluster Operations: Compare resources, health, and configurations across clusters
Context Caching: Efficient 30-second TTL cache avoids re-reading kubeconfig files on every call
Centralized Management: Manage dev, staging, and production from a single interface

Tools Reference (60+ tools)

Cluster & Context Management (6 tools)

Tool	Description
`k8s_get_contexts`	List all available contexts across all kubeconfig files
`k8s_get_namespaces`	List all namespaces in a cluster
`k8s_create_ns`	Create a new namespace with optional labels/annotations
`k8s_delete_ns`	Delete a namespace (protects system namespaces)
`k8s_get_nodes`	List all nodes with status, roles, capacity, and version
`k8s_cluster_info`	Comprehensive cluster health summary (nodes, pods, deployments, warnings)

Resource Discovery & Inspection (7 tools)

Tool	Description
`k8s_get_resources`	List resources of any kind (pods, deployments, services, ingress, etc.)
`k8s_get_resource`	Get the complete definition of a single resource
`k8s_get_pod_logs`	Get pod logs with duration filtering and container selection
`k8s_get_events`	List cluster events in a namespace, sorted by most recent
`k8s_describe`	Detailed resource description similar to `kubectl describe`
`k8s_apis`	List all available API groups and resources in the cluster
`k8s_crds`	List all Custom Resource Definitions with versions and scope

Metrics & Monitoring (3 tools)

Tool	Description
`k8s_top_nodes`	Display node CPU/memory usage alongside capacity
`k8s_top_pods`	Display pod/container CPU/memory usage
`k8s_diagnose_application`	Comprehensive app diagnostics with issue detection and recommendations

Rollout Management (6 tools)

Tool	Description
`k8s_rollout_status`	Get rollout status for deployment/statefulset/daemonset
`k8s_rollout_history`	Get revision history
`k8s_rollout_undo`	Roll back to a previous revision
`k8s_rollout_restart`	Trigger a rolling restart
`k8s_rollout_pause`	Pause an in-progress rollout
`k8s_rollout_resume`	Resume a paused rollout

Scaling (3 tools)

Tool	Description
`k8s_scale_resource`	Scale deployment/statefulset/replicaset to N replicas
`k8s_autoscale_resource`	Configure Horizontal Pod Autoscaler (HPA)
`k8s_update_resources`	Update CPU/memory requests and limits for a container

Resource CRUD (6 tools)

Tool	Description
`k8s_create_resource`	Create a resource from YAML/JSON content
`k8s_apply_resource`	Apply configuration (create or update, like `kubectl apply`)
`k8s_delete_resource`	Delete any resource type with optional force/grace period
`k8s_patch_resource`	Update specific fields with strategic merge patch
`k8s_label_resource`	Add or update labels on a resource
`k8s_annotate_resource`	Add or update annotations on a resource

Workload Management (3 tools)

Tool	Description
`k8s_expose_resource`	Expose a deployment/pod as a new Service
`k8s_run_pod`	Create and run a pod with a specified image
`k8s_set_resources_for_container`	Set resource limits/requests for containers

Node Management (5 tools)

Tool	Description
`k8s_cordon_node`	Mark a node as unschedulable
`k8s_uncordon_node`	Mark a node as schedulable
`k8s_drain_node`	Drain a node by evicting pods (for maintenance)
`k8s_taint_node`	Add taints to a node
`k8s_untaint_node`	Remove taints from a node

Pod Operations (1 tool)

Tool	Description
`k8s_pod_exec`	Execute a command in a container (supports quoted arguments)

Secrets & ConfigMaps (6 tools)

Tool	Description
`k8s_list_secret`	List secrets with metadata (values hidden for security)
`k8s_get_secret_detail`	Get a secret; optionally decode values
`k8s_create_secret_resource`	Create a new secret (auto base64-encodes values)
`k8s_list_configmap`	List ConfigMaps with their key names
`k8s_get_configmap_detail`	Get a ConfigMap with full data contents
`k8s_create_configmap_resource`	Create a new ConfigMap

RBAC (5 tools)

Tool	Description
`k8s_get_roles`	List RBAC Roles with permission rules
`k8s_get_clusterroles`	List RBAC ClusterRoles
`k8s_get_rolebindings`	List RoleBindings (who has what role)
`k8s_get_clusterrolebindings`	List ClusterRoleBindings
`k8s_get_service_accounts`	List ServiceAccounts

Storage (3 tools)

Tool	Description
`k8s_get_pvcs`	List PersistentVolumeClaims with status, capacity, and storage class
`k8s_get_pvs`	List PersistentVolumes with capacity and bound claims
`k8s_get_storage_classes`	List StorageClasses with provisioner and default status

Networking (1 tool)

Tool	Description
`k8s_get_network_policies`	List NetworkPolicies with pod selectors and rule counts

Job Management (2 tools)

Tool	Description
`k8s_get_jobs`	List Jobs with completion status and timing
`k8s_get_cronjobs`	List CronJobs with schedule, suspend status, and last run

Usage Examples

Cluster Health Check

hljs language-css

Give me a health overview of my production cluster.

Multi-Cluster Comparison

hljs language-arduino

Compare the number of pods running in the 'backend' namespace between my 'prod' and 'staging' contexts.

Diagnose Application Issues

hljs language-arduino

My deployment 'my-app' in the 'production' namespace is having issues. Can you diagnose what's wrong?

Scale Resources

hljs language-arduino

Scale the 'backend' deployment in the 'default' namespace to 5 replicas.

Resource Management

hljs language-arduino

Delete the failed job 'data-migration-v1' in the 'batch' namespace.

hljs language-sql

Create a new namespace called 'staging' with the label environment=staging.

Secret Management

hljs language-sql

List all secrets in the 'production' namespace and show me the keys in the 'api-credentials' secret.

RBAC Inspection

hljs language-sql

Show me all role bindings in the 'default' namespace -- who has access to what?

Storage Overview

hljs language-sql

List all PVCs in the cluster and show which ones are Pending.

Node Maintenance

hljs language-csharp

Cordon node 'worker-3', drain it ignoring DaemonSets, then uncordon when maintenance is complete.

Rollback Deployment

hljs language-arduino

Roll back the 'api-gateway' deployment in the 'services' namespace to the previous version.

Execute in Pod

hljs language-arduino

Run 'ls -la /app/config' inside the 'app' container of pod 'web-app-xyz' in the 'default' namespace.

Create Resources

hljs language-yaml

Create a new deployment with this YAML:
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  namespace: default
spec:
  replicas: 2
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.27
        ports:
        - containerPort: 80

Architecture

hljs language-graphql

k8s-multicluster-mcp/
├── app.py                          # MCP server entry point & tool registration
├── src/
│   ├── utils/
│   │   ├── k8s_client.py           # Multi-cluster client with context caching
│   │   └── pluralize.py            # Kubernetes resource kind pluralization
│   └── tools/
│       ├── contexts.py             # Context listing
│       ├── namespaces.py           # Namespace listing
│       ├── namespace_management.py # Namespace create/delete
│       ├── nodes.py                # Node listing
│       ├── pods.py                 # Resource listing & pod logs
│       ├── resources.py            # Single resource retrieval
│       ├── events.py               # Event listing
│       ├── describe.py             # kubectl describe equivalent
│       ├── api_discovery.py        # API & CRD discovery
│       ├── metrics.py              # Node/pod metrics (top)
│       ├── diagnosis.py            # Application diagnostics
│       ├── cluster_health.py       # Cluster health summary
│       ├── rollouts.py             # Rollout management
│       ├── scaling.py              # Scale & autoscale & resource updates
│       ├── resource_management.py  # Create, apply, patch, label, annotate
│       ├── delete_resource.py      # Resource deletion
│       ├── workload_management.py  # Expose, run pod, set resources
│       ├── node_management.py      # Cordon, drain, taint
│       ├── pod_operations.py       # Exec into pods
│       ├── secret_configmap.py     # Secret & ConfigMap management
│       ├── rbac.py                 # Roles, bindings, service accounts
│       ├── storage_network.py      # PVC, PV, StorageClass, NetworkPolicy
│       └── job_management.py       # Jobs & CronJobs
├── requirements.txt
├── pyproject.toml
├── Dockerfile
└── smithery.yaml

What's New in v2.0.0

20+ new tools: Resource deletion, namespace management, secrets & configmaps, RBAC inspection, storage & network visibility, job management, cluster health summary, pod creation
Bug fixes: Fixed resource pluralization (e.g., Ingress -> ingresses not ingresss), fixed pod exec command splitting to handle quoted arguments, fixed timeout parameter handling
Performance: Context discovery now uses a 30-second TTL cache with direct context-to-file mapping, eliminating redundant file scanning
Improved tool descriptions: All 60+ tools have detailed descriptions for better AI assistant integration
Dependency cleanup: Removed unused fastapi and uvicorn dependencies
Security: Namespace deletion protects system namespaces; secret values hidden by default

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

k8s-multicluster-mcp

Multi Cluster Kubernetes MCP Server

Quick Start

Installing via Smithery

Manual Installation

Docker

Configuration

Claude Desktop / MCP Client

Environment Variables

Prerequisites

Multi-Cluster Management

Tools Reference (60+ tools)

Cluster & Context Management (6 tools)

Resource Discovery & Inspection (7 tools)

Metrics & Monitoring (3 tools)

Rollout Management (6 tools)

Scaling (3 tools)

Resource CRUD (6 tools)

Workload Management (3 tools)

Node Management (5 tools)

Pod Operations (1 tool)

Secrets & ConfigMaps (6 tools)

RBAC (5 tools)

Storage (3 tools)

Networking (1 tool)

Job Management (2 tools)

Usage Examples

Cluster Health Check

Multi-Cluster Comparison

Diagnose Application Issues

Scale Resources

Resource Management

Secret Management

RBAC Inspection

Storage Overview

Node Maintenance

Rollback Deployment

Execute in Pod

Create Resources

Architecture

What's New in v2.0.0

Contributing

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