Disabling multicast for a project¶

In OpenShift Container Platform with OVN-Kubernetes, you can disable IP multicast on a per-project basis so pods no longer receive multicast traffic.

Disable multicast between pods¶

To disable multicast between pods in a project, you can remove the k8s.ovn.org/multicast-enabled annotation from the namespace by using the oc annotate command or a namespace manifest.

Prerequisites

Install the OpenShift CLI (oc).
You must log in to the cluster with a user that has the cluster-admin role.

Procedure

Disable multicast by running the following command:
```
$ oc annotate namespace <namespace> \
    k8s.ovn.org/multicast-enabled-
```
For <namespace>, specify the namespace for the project you want to disable multicast for.
Tip

You can alternatively apply the following YAML to delete the annotation:
```
apiVersion: v1
kind: Namespace
metadata:
  name: <namespace>
  annotations:
    k8s.ovn.org/multicast-enabled: null
```