mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-18 19:10:21 +00:00
36 lines
1.2 KiB
Markdown
36 lines
1.2 KiB
Markdown
|
# Authenticating outside the cluster
|
||
|
|
|
||
|
|
This example shows you how to configure a client with client-go to authenticate
|
||
|
|
to the Kubernetes API from an application running outside the Kubernetes
|
||
|
|
cluster.
|
||
|
|
|
||
|
|
You can use your kubeconfig file that contains the context information
|
||
|
|
of your cluster to initialize a client. The kubeconfig file is also used
|
||
|
|
by the `kubectl` command to authenticate to the clusters.
|
||
|
|
|
||
|
|
## Running this example
|
||
|
|
|
||
|
|
Make sure your `kubectl` is configured and pointed to a cluster. Run
|
||
|
|
`kubectl get nodes` to confirm.
|
||
|
|
|
||
|
|
Run this application with:
|
||
|
|
|
||
|
|
cd out-of-cluster-client-configuration
|
||
|
|
go build -o app .
|
||
|
|
./app
|
||
|
|
|
||
|
|
Running this application will use the kubeconfig file and then authenticate to the
|
||
|
|
cluster, and print the number of nodes in the cluster every 10 seconds:
|
||
|
|
|
||
|
|
$ ./app
|
||
|
|
There are 3 pods in the cluster
|
||
|
|
There are 3 pods in the cluster
|
||
|
|
There are 3 pods in the cluster
|
||
|
|
...
|
||
|
|
|
||
|
|
Press <kbd>Ctrl</kbd>+<kbd>C</kbd> to quit this application.
|
||
|
|
|
||
|
|
> **Note:** You can use the `-kubeconfig` option to use a different config file. By default
|
||
|
|
this program picks up the default file used by kubectl (when `KUBECONFIG`
|
||
|
|
environment variable is not set).
|