81 lines
2.1 KiB
Markdown
81 lines
2.1 KiB
Markdown
---
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---
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{% capture overview %}
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This page shows how to assign a Kubernetes Pod to a particular node in a
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Kubernetes cluster.
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{% endcapture %}
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{% capture prerequisites %}
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{% include task-tutorial-prereqs.md %}
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{% endcapture %}
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{% capture steps %}
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### Adding a label to a node
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1. List the nodes in your cluster:
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kubectl get nodes
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The output is similar to this:
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NAME STATUS AGE
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worker0 Ready 1d
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worker1 Ready 1d
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worker2 Ready 1d
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1. Chose one of your nodes, and add a label to it:
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kubectl label nodes <your-node-name> disktype=ssd
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where `<your-node-name>` is the name of your chosen node.
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1. Verify that your chosen node has a `disktype=ssd` label:
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kubectl get nodes --show-labels
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The output is similar to this:
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NAME STATUS AGE LABELS
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worker0 Ready 1d ...,disktype=ssd,kubernetes.io/hostname=worker0
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worker1 Ready 1d ...,kubernetes.io/hostname=worker1
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worker2 Ready 1d ...,kubernetes.io/hostname=worker2
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In the preceding output, you can see that the `worker0` node has a
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`disktype=ssd` label.
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### Creating a pod that gets scheduled to your chosen node
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This pod configuration file describes a pod that has a node selector,
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`disktype: ssd`. This means that the pod will get scheduled on a node that has
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a `disktype=ssd` label.
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{% include code.html language="yaml" file="pod.yaml" ghlink="/docs/tasks/administer-cluster/pod.yaml" %}
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1. Use the configuration file to create a pod that will get scheduled on your
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chosen node:
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kubectl create -f http://k8s.io/docs/tasks/administer-cluster/pod.yaml
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1. Verify that the pod is running on your chosen node:
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kubectl get pods --output=wide
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The output is similar to this:
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NAME READY STATUS RESTARTS AGE IP NODE
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nginx 1/1 Running 0 13s 10.200.0.4 worker0
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{% endcapture %}
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{% capture whatsnext %}
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Learn more about
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[labels and selectors](/docs/user-guide/labels/).
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{% endcapture %}
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{% include templates/task.md %}
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