Red Hat Summit第2章 Event sources
2.1. Event sources
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A Knative event source can be any Kubernetes object that generates or imports cloud events, and relays those events to another endpoint, known as a sink. Sourcing events is critical to developing a distributed system that reacts to events.
You can create and manage Knative event sources in the OpenShift Container Platform web console, the Knative (kn) CLI, or by applying YAML files.
Currently, OpenShift Serverless supports the following event source types:
- API server source
- Brings Kubernetes API server events into Knative. The API server source sends a new event each time a Kubernetes resource is created, updated or deleted.
- Ping source
- Produces events with a fixed payload on a specified cron schedule.
- Kafka event source
- Connects an Apache Kafka cluster to a sink as an event source.
You can also create a custom event source.
2.1.1. Creating an event source
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A Knative event source can be any Kubernetes object that generates or imports cloud events, and relays those events to another endpoint, known as a sink.
Prerequisites
- The OpenShift Serverless Operator and Knative Eventing are installed on your OpenShift Container Platform cluster.
- You have logged in to the web console.
-
You have
cluster-adminprivileges on OpenShift Container Platform, or you have cluster or dedicated administrator permissions on Red Hat OpenShift Service on AWS or OpenShift Dedicated.
Procedure
-
In the OpenShift Container Platform web console, navigate to Serverless
Eventing. - In the Create list, select Event Source. You will be directed to the Event Sources page.
- Select the event source type that you want to create.
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