# Infrastructure for Kubernetes: Nodes

## What are Nodes?

Nodes are the worker machines in a Kubernetes cluster. Each node runs container workloads and includes components like the container runtime, kubelet, and kube-proxy.

In Kloudfuse, the **Nodes** screen helps you monitor the health, capacity, and performance of all Kubernetes nodes. Use it to check CPU and memory usage, scheduling status, roles, and node-level failures.

## Access the nodes screen

Go to **Infrastructure** \> **Kubernetes** \> **Nodes**.

## Node Table Columns

Each column in the table displays key node attributes:

1. **Cluster** – Cluster where the node is deployed  
2. **Node** – Unique name of the node  
3. **Status** – Node condition indicators:  
   - `Ready`: Node is healthy and accepting workloads  
   - `NotReady`: Node is unreachable or unhealthy  
   - `Unknown`: Node state cannot be determined  
4. **Schedulable** – Indicates whether the node is currently accepting new pods (cordoned or not)  
5. **Age** – Time since the node joined the cluster  
6. **Kubelet Version** – Version of the kubelet process running on the node  
7. **Roles** – Node roles such as `control-plane`, `worker`, or `infra`  
8. **CPU**  
   - **Total** – Total number of CPU cores on the node  
   - **Allocable** – CPU capacity available for scheduling pods  
   - **Used** – Real-time CPU usage by active workloads  
9. **Memory**  
   - **Total** – Total memory capacity on the node (GiB)  
   - **Allocable** – Memory available to pods after system reservations  
   - **Used** – Real-time memory consumption by pods and system processes

## Filters

Kloudfuse provides three categories of filters to scope your results precisely.

- [Kubernetes Filter](https://docs.kloudfuse.com/platform/3.5.0/infrastructure-kubernetes-filters/#resources)
- [Facets Filter](https://docs.kloudfuse.com/platform/3.5.0/infrastructure-kubernetes-filters/#facets)
- [Additional Filter](https://docs.kloudfuse.com/platform/3.5.0/infrastructure-kubernetes-filters/#additional)

## Search, group, and sort

Use the following options to refine your search view:

### 1. Search

Use the **Search** bar to filter resources such as pods, nodes, clusters, and namespaces using key-value pairs—just like filtering logs in Kloudfuse.
   - Auto-suggestions simplify input with live facet and value suggestions.
   - Example:
     1. Type `cluster` — autocomplete lists matching field names.
     2. Select `cluster` — a new dropdown appears with current cluster names.
     3. Choose one or more cluster names to apply the filter.
       This scoped search helps you quickly locate relevant pods by matching attributes such as:
       - `cluster`
       - `namespace`
       - `status`
       - `node`
       - `deployment`
       - and more.

### 2. Group By

Group resources—such as Pods, Clusters, Namespaces, or Nodes—by shared attributes to simplify analysis and troubleshooting. Common groupings include:
- **Cluster** – See how resources are distributed across clusters.
- **Namespace** – Organize by logical boundaries within the cluster.
- **Node** – Identify which node is hosting the resource.
- **Status** – Group by lifecycle status (Running, Pending, etc.)

### 3. Sort

Use sorting to identify highest resource usage, longest-running pods, or newest deployments. Click any row to open the node detail pane.

## Node Detail pane

You can filter directly from visible fields in the pane, including:
- **Cluster**, **Namespace**, and **Node**
- Pod **IP address** and **QoS Class**
- **Restart count** and **Container readiness**

All fields are clickable and filterable.

### YAML

Use the **YAML** tab to inspect the live configuration of your Kubernetes resource.

### Logs

Use the **Logs** tab to inspect real-time application and system logs for a selected Kubernetes resource.

### Metrics

The **Metrics** tab displays real-time CPU, memory, network, and disk usage for the selected resource.

### Events

Use the **Events** tab to view scheduled updates, restarts, warnings, or failed operations for a Kubernetes resource.