Create task page: Assigning Pods to Nodes.

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steveperry-53 2016-09-29 13:43:54 -07:00
parent 9706528d8d
commit 53933e1738
5 changed files with 108 additions and 1 deletions

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@ -10,4 +10,8 @@ toc:
section:
- title: Using an HTTP Proxy to Access the Kubernetes API
path: /docs/tasks/access-kubernetes-api/http-proxy-access-api/
- title: Administering a Cluster
section:
- title: Assigning Pods to Nodes
path: /docs/tasks/administer-cluster/assign-pods-nodes/

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@ -0,0 +1,87 @@
---
---
{% capture overview %}
This page shows how to use an HTTP proxy to access the Kubernetes API.
{% endcapture %}
{% capture prerequisites %}
* Install [kubectl](http://kubernetes.io/docs/user-guide/prereqs).
* Create a Kubernetes cluster, including a running Kubernetes
API server. One way to create a new cluster is to use
[Minikube](/docs/getting-started-guides/minikube).
* Configure `kubectl` to communicate with your Kubernetes API server. This
configuration is done automatically if you use Minikube.
{% 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
1. 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.
1. Verify that your chosen node has a `disktype=ssd` label:
kubectl get nodes --showlabels
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:
export REPO=https://raw.githubusercontent.com/kubernetes/kubernetes.github.io/master
kubectl create -f $REPO/docs/tasks/administer-cluster/pod.yaml
1. 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](/docs/user-guide/labels/).
{% endcapture %}
{% include templates/task.md %}

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@ -0,0 +1,13 @@
apiVersion: v1
kind: Pod
metadata:
name: nginx
labels:
env: test
spec:
containers:
- name: nginx
image: nginx
imagePullPolicy: IfNotPresent
nodeSelector:
disktype: ssd

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@ -11,6 +11,9 @@ The Tasks section of the Kubernetes documentation is a work in progress
* [Using an HTTP Proxy to Access the Kubernetes API](/docs/tasks/access-kubernetes-api/http-proxy-access-api)
#### Administering a Cluster
* [Assigning Pods to Nodes](/docs/tasks/administer-cluster/assign-pods-nodes/)
### What's next

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@ -7,7 +7,7 @@ The Tutorials section of the Kubernetes documentation is a work in progress.
* [Running a Stateless Application Using a Deployment](/docs/tutorials/stateless-application/run-stateless-application-deployment/)
* [Exposing an External IP Address Using a Service](/docs/tutorials/stateless-application/expose-external-ip-address-service/)
* [Using a Service to Access an Application in a Cluster](/docs/tutorials/stateless-application/expose-external-ip-address-service/)
### What's next