Configure Sugar Controller¶

This topic describes how to configure the Sugar Controller. You can configure the Sugar controller to create a Broker when a Namespace or Trigger is created with configured labels. See Knative Eventing Sugar Controller for an example.

The default config-sugar ConfigMap disables Sugar Controller, by setting namespace-selector and trigger-selector to an empty string.

To enable the Sugar Controller

for Namespaces, the LabelSelector namespace-selector can be configured.
for Triggers, the LabelSelector trigger-selector can be configured.

Sample configuration to enable Sugar Controller on selected Namespaces and Triggers

apiVersion: v1
kind: ConfigMap
metadata:
name: config-sugar
namespace: knative-eventing
labels:
    eventing.knative.dev/release: devel
data:
  namespace-selector: |
    matchExpressions:
    - key: "eventing.knative.dev/injection"
      operator: "In"
      values: ["enabled"]

  trigger-selector: |
    matchExpressions:
    - key: "eventing.knative.dev/injection"
      operator: "In"
      values: ["enabled"]

The Sugar Controller will only operate on Namespaces or Triggers with the label eventing.knative.dev/injection: enabled. This also emulates the legacy Sugar Controller behavior for Namespaces.

You can edit this ConfigMap by running the command:

kubectl edit cm config-sugar -n knative-eventing