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Chapter 8. Network Policy

As an administrator, you can create a network policy for the 

netobserv
namespace. This policy secures inbound and outbound access to the Network Observability Operator.

You can set up ingress and egress network policies to control pod traffic. This enhances security and collects only the network flow data you need. This reduces noise, supports compliance, and improves visibility into network communication.

You can configure the 

FlowCollector
custom resource (CR) to deploy an egress and ingress network policy for network observability. By default, the 
spec.NetworkPolicy.enable
specification is set to 
true
.

If you have installed Loki, Kafka or any exporter in a different namespace that also has a network policy, you must ensure that the network observability components can communicate with them. Consider the following about your setup:

  • Connection to Loki (as defined in the 
    FlowCollector
    CR 
    spec.loki
    parameter)
  • Connection to Kafka (as defined in the 
    FlowCollector
    CR 
    spec.kafka
    parameter)
  • Connection to any exporter (as defined in FlowCollector CR 
    spec.exporters
    parameter)
  • If you are using Loki and including it in the policy target, connection to an external object storage (as defined in your 
    LokiStack
    related secret)

Procedure

  1. In the web console, go to Operators Installed Operators page.
  2. Under the Provided APIs heading for Network Observability, select Flow Collector.
  3. Select cluster then select the YAML tab.

  4. Configure the 

    FlowCollector
    CR. A sample configuration is as follows:

    Example FlowCollector CR for network policy

    apiVersion: flows.netobserv.io/v1beta2
kind: FlowCollector
metadata:
  name: cluster
spec:
  namespace: netobserv
  networkPolicy:
    enable: true
    1 
    
    additionalNamespaces: ["openshift-console", "openshift-monitoring"]
    2 
    
# ...

    1
    By default, the enable value is true.
    2
    Default values are ["openshift-console", "openshift-monitoring"].
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