Docker Cookbook

See Also
• General API 
documentation
5.12 Exploring the Kubernetes API | 161

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• Reaching the Kubernetes 
API
• Detailed API 
conventions
5.13 Running the Kubernetes Dashboard
Problem
You would like to gain visibility into your Kubernetes cluster in order to gain insight
into the various entities that are running (including pods, services, and replication
controllers).
Solution
Starting with version 0.16 of Kubernetes, a web user interface is bundled with the API
server. Therefore, if you bind your API server to an address that you can access from
a browser, you can access the web UI straight away at the 
/static/app
.
For example, in an insecure way, you can open the UI at 
http://:
8080/static/app
. 
Figure 5-4
 shows a screenshot.
At this time, the functionality is limited to a set of views, and you cannot manage
pods, services, or replication controllers. This should change quickly.
Discussion
The Kubernetes dashboard is under heavy development by folks from 
Kismatic
,
except frequent changes to the views and added functionality to manage Kubernetes
components through the web UI.
The 
source
 contains detailed documentation on bringing up a development environ‐
ment. It is possible to write your own 
visualizer
, referred to as a 
component
.
162 | Chapter 5: Kubernetes

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Figure 5-4. Kubernetes dashboard
5.14 Upgrading from an Old API Version
Problem
With the release of the v1 API, you may have configuration files that use an older beta
version of the API. You need a tool to simplify the API version migration of all your
configuration files.
Solution
This recipe is provided as a helper for developers. It may be depre‐
cated and should not be considered for production work. This tool
was used during the development of the API v1 version and may
work only with older versions of the source code.