<p>This is what i am trying to do:Get nginx pod's ip created in previous step, use a temp busybox image to wget its '/'</p>
<p>Find the link for your reference:
<a href="https://github.com/dgkanatsios/CKAD-exercises/blob/main/a.core_concepts.md#get-nginx-pods-ip-created-in-previous-step-use-a-temp-busybox-image-to-wget-its-" rel="nofollow noreferrer">https://github.com/dgkanatsios/CKAD-exercises/blob/main/a.core_concepts.md#get-nginx-pods-ip-created-in-previous-step-use-a-temp-busybox-image-to-wget-its-</a></p>
<p>Now my question is when I run this command it works:</p>
<pre><code>kubectl run busybox --image=busybox --rm -it --restart=Never -- wget -O- $(kubectl get pod nginx -o jsonpath='{.status.podIP}:{.spec.containers[0].ports[0].containerPort}')
</code></pre>
<p>but when I do this it does not work. Cam someone explain me why is that ?</p>
<pre><code>kubectl get po -o wide # get the IP, will be something like '10.1.1.131'
# create a temp busybox pod
kubectl run busybox --image=busybox --rm -it --restart=Never -- wget -O- 10.1.1.131:80
</code></pre>

<p>You have to first create an Nginx pod. This is what is referred as &quot;previous step&quot;.</p>
<pre><code>$ kubectl run nginx --image=nginx --restart=Never --port=80

pod/nginx created
</code></pre>
<p>You can then run wget inside a BusyBox pod:</p>
<pre><code>$  kubectl run BusyBox --image=busybox --rm -it --restart=Never -- wget -O- $(kubectl get pod nginx -o jsonpath='{.status.podIP}:{.spec.containers[0].ports[0].containerPort}')

Connecting to 10.42.0.52:80 (10.42.0.52:80)
writing to stdout
&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;Welcome to nginx!&lt;/title&gt;
&lt;style&gt;
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
&lt;/style&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;h1&gt;Welcome to nginx!&lt;/h1&gt;
&lt;p&gt;If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.&lt;/p&gt;

&lt;p&gt;For online documentation and support please refer to
&lt;a href=&quot;http://nginx.org/&quot;&gt;nginx.org&lt;/a&gt;.&lt;br/&gt;
Commercial support is available at
&lt;a href=&quot;http://nginx.com/&quot;&gt;nginx.com&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&lt;em&gt;Thank you for using nginx.&lt;/em&gt;&lt;/p&gt;
&lt;/body&gt;
&lt;/html&gt;
-                    100% |********************************|   615  0:00:00 ETA
written to stdout
pod &quot;busybox&quot; deleted
</code></pre>
