<p>When I run <code>oc get netnamespaces</code>, I get the following lines, among others:</p>

<pre><code>NAME                                        NETID      EGRESS IPS
default                                     0          []
kube-service-catalog                        0          []
sandbox-foo                                 9175549    []
</code></pre>

<p>What is the meaning of <code>NETID = 0</code>? Is this a global network, that is accessible for all other projects?</p>

<p>We're running OpenShift 3.9.</p>

Patrick Bucher
<p>As OpenShift uses  <strong>redhat/openshift-ovs-multitenant</strong> network plugin which means you can control the overlay networks.</p>

<p>All of Pods inside the Project <strong>Default</strong> with <strong>NETID=0</strong>  can access other pods inside the cluster. for example, Router can access the pods from all of the projects  to send the requests. </p>

<p>another example is all of project can list the related images from the docker-registry pod which lives in default project with <strong>NETID=0</strong></p>

<p>it allow project <strong>Default</strong> to access all pods in the cluster and vice versa</p>

<p><code>oc adm pod-network make-projects-global &lt;project1&gt;</code></p>

<blockquote>
  <p>In the above example, all the pods and services in  and  can now access any pods and services in the cluster and vice versa.</p>
</blockquote>

<p>Here is the instruction, how you can make any project a global project <a href="https://docs.openshift.com/container-platform/3.11/admin_guide/managing_networking.html#making-project-networks-global" rel="nofollow noreferrer">making-project-networks-global</a></p>
