Security considerations for Kubernetes

You must make sure that the Kubernetes cluster is secured according to network policies.

Network policy

Make sure that the Kubernetes cluster where you plan to install is configured securely. To help harden the security for your cluster, you can consider implementing a restrictive ingress and egress network policy that strictly controls the inbound and outbound traffic, but allows the applications within the namespace to communicate with each other.

For general information about network policies in Kubernetes, see https://kubernetes.io/docs/concepts/services-networking/network-policies/.
For Red Hat OpenShift specific information about creating your ingress and egress network policy, see Red Hat documentation: Creating a network policy.