website/docs/tasks/administer-cluster/assign-pods-nodes.md

title
Assigning Pods to Nodes

{% capture overview %} This page shows how to assign a Kubernetes Pod to a particular node in a Kubernetes cluster. {% endcapture %}

{% capture prerequisites %}

{% include task-tutorial-prereqs.md %}

{% endcapture %}

{% capture steps %}

Adding a label to a node

1. List the nodes in your cluster:

    kubectl get nodes
   

   The output is similar to this:

    NAME      STATUS    AGE
    worker0   Ready     1d
    worker1   Ready     1d
    worker2   Ready     1d
   

2. Chose one of your nodes, and add a label to it:

    kubectl label nodes <your-node-name> disktype=ssd
   

   where <your-node-name> is the name of your chosen node.

3. Verify that your chosen node has a disktype=ssd label:

    kubectl get nodes --show-labels
   

   The output is similar to this:

    NAME      STATUS    AGE       LABELS
    worker0   Ready     1d        ...,disktype=ssd,kubernetes.io/hostname=worker0
    worker1   Ready     1d        ...,kubernetes.io/hostname=worker1
    worker2   Ready     1d        ...,kubernetes.io/hostname=worker2
   

   In the preceding output, you can see that the worker0 node has a disktype=ssd label.

Creating a pod that gets scheduled to your chosen node

This pod configuration file describes a pod that has a node selector, disktype: ssd. This means that the pod will get scheduled on a node that has a disktype=ssd label.

{% include code.html language="yaml" file="pod.yaml" ghlink="/docs/tasks/administer-cluster/pod.yaml" %}

1. Use the configuration file to create a pod that will get scheduled on your chosen node:

    kubectl create -f http://k8s.io/docs/tasks/administer-cluster/pod.yaml
   

2. Verify that the pod is running on your chosen node:

    kubectl get pods --output=wide
   

   The output is similar to this:

    NAME     READY     STATUS    RESTARTS   AGE    IP           NODE
    nginx    1/1       Running   0          13s    10.200.0.4   worker0
   

{% endcapture %}

{% capture whatsnext %} Learn more about labels and selectors. {% endcapture %}

{% include templates/task.md %}