remove_node_taint
Remove taints from Kubernetes nodes to allow pod scheduling by specifying context, node name, and taint key for cluster management.
Instructions
Remove a taint from a node.
Args: context_name: The Kubernetes context name node_name: The name of the node to modify taint_key: The taint key to remove
Returns: JSON string containing the updated node taints
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| context_name | Yes | ||
| node_name | Yes | ||
| taint_key | Yes |
Implementation Reference
- tools/node.py:280-352 (handler)The remove_node_taint tool handler function. It removes a specified taint from a Kubernetes node by patching the node's spec taints list after filtering out the matching taint key. Includes decorators for MCP tool registration (@mcp.tool()) and context usage (@use_current_context). Returns JSON with updated taints or messages if not found/no taints.
@mcp.tool() @use_current_context def remove_node_taint(context_name: str, node_name: str, taint_key: str): """ Remove a taint from a node. Args: context_name: The Kubernetes context name node_name: The name of the node to modify taint_key: The taint key to remove Returns: JSON string containing the updated node taints """ core_v1: CoreV1Api = get_api_clients(context_name)["core"] # Get the current node node = core_v1.read_node(node_name) # Check if the node has taints if not node.spec.taints: result = { "name": node_name, "taints": [], "message": "Node has no taints" } return json.dumps(result) # Filter out the taint to remove updated_taints = [taint for taint in node.spec.taints if taint.key != taint_key] # Check if taint was found if len(updated_taints) == len(node.spec.taints): result = { "name": node_name, "taints": [{"key": taint.key, "value": taint.value, "effect": taint.effect} for taint in node.spec.taints], "message": f"Taint with key '{taint_key}' not found" } return json.dumps(result) # Apply the patch body = { "spec": { "taints": [ { "key": taint.key, "value": taint.value, "effect": taint.effect } for taint in updated_taints ] } } patched_node = core_v1.patch_node(node_name, body) # Format the taints for response response_taints = [] if patched_node.spec.taints: response_taints = [ { "key": taint.key, "value": taint.value, "effect": taint.effect } for taint in patched_node.spec.taints ] result = { "name": patched_node.metadata.name, "taints": response_taints } return json.dumps(result)