<p>Kubernetes assigns an IP address for each container, but how can I acquire the IP address from a container in the Pod? I couldn't find the way from documentations.</p>

<p>Edit: I'm going to run Aerospike cluster in Kubernetes. and the config files need its own IP address. And I'm attempting to use confd to set the hostname. I would use the environment variable if it was set.</p>

<p>The simplest answer is to ensure that your pod or replication controller yaml/json files add the pod IP as an environment variable by adding the config block defined below. (the block below additionally makes the name and namespace available to the pod)</p>
<pre><code>env:
- name: MY_POD_NAME
  valueFrom:
    fieldRef:
      fieldPath: metadata.name
- name: MY_POD_NAMESPACE
  valueFrom:
    fieldRef:
      fieldPath: metadata.namespace
- name: MY_POD_IP
  valueFrom:
    fieldRef:
      fieldPath: status.podIP
</code></pre>
<p>Recreate the pod/rc and then try</p>
<pre><code>echo $MY_POD_IP
</code></pre>
<p>also run <code>env</code> to see what else kubernetes provides you with.</p>
