Initial checkin of v1.1 -- does not build
This commit is contained in:
@@ -0,0 +1,60 @@
|
||||
---
|
||||
layout: docwithnav
|
||||
title: "Downward API example"
|
||||
---
|
||||
<!-- BEGIN MUNGE: UNVERSIONED_WARNING -->
|
||||
|
||||
|
||||
<!-- END MUNGE: UNVERSIONED_WARNING -->
|
||||
|
||||
# Downward API example
|
||||
|
||||
Following this example, you will create a pod with a container that consumes the pod's name and
|
||||
namespace using the [downward API](../downward-api.html).
|
||||
|
||||
## Step Zero: Prerequisites
|
||||
|
||||
This example assumes you have a Kubernetes cluster installed and running, and that you have
|
||||
installed the `kubectl` command line tool somewhere in your path. Please see the [getting
|
||||
started](../../../docs/getting-started-guides/) for installation instructions for your platform.
|
||||
|
||||
## Step One: Create the pod
|
||||
|
||||
Containers consume the downward API using environment variables. The downward API allows
|
||||
containers to be injected with the name and namespace of the pod the container is in.
|
||||
|
||||
Use the [`examples/downward-api/dapi-pod.yaml`](dapi-pod.yaml) file to create a Pod with a container that consumes the
|
||||
downward API.
|
||||
|
||||
{% highlight console %}
|
||||
{% raw %}
|
||||
$ kubectl create -f docs/user-guide/downward-api/dapi-pod.yaml
|
||||
{% endraw %}
|
||||
{% endhighlight %}
|
||||
|
||||
### Examine the logs
|
||||
|
||||
This pod runs the `env` command in a container that consumes the downward API. You can grep
|
||||
through the pod logs to see that the pod was injected with the correct values:
|
||||
|
||||
{% highlight console %}
|
||||
{% raw %}
|
||||
$ kubectl logs dapi-test-pod | grep POD_
|
||||
2015-04-30T20:22:18.568024817Z MY_POD_NAME=dapi-test-pod
|
||||
2015-04-30T20:22:18.568087688Z MY_POD_NAMESPACE=default
|
||||
2015-04-30T20:22:18.568092435Z MY_POD_IP=10.0.1.6
|
||||
{% endraw %}
|
||||
{% endhighlight %}
|
||||
|
||||
|
||||
|
||||
|
||||
<!-- BEGIN MUNGE: IS_VERSIONED -->
|
||||
<!-- TAG IS_VERSIONED -->
|
||||
<!-- END MUNGE: IS_VERSIONED -->
|
||||
|
||||
|
||||
<!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
|
||||
[]()
|
||||
<!-- END MUNGE: GENERATED_ANALYTICS -->
|
||||
|
||||
Reference in New Issue
Block a user