You can use the kn CLI to list and manage available event sources or event source types for use with Knative Eventing.

Currently, kn supports management of the following event source types:

ApiServerSource

Connects a sink to the Kubernetes API server.

PingSource

Periodically sends ping events with a constant payload. It can be used as a timer.

Listing available event source types using kn

You can list the available event source types in the terminal by using the following command:

$ kn source list-types

The default output for this command will look like:

TYPE              NAME                                            DESCRIPTION
ApiServerSource   apiserversources.sources.knative.dev            Watch and send Kubernetes API events to a sink
PingSource        pingsources.sources.knative.dev                 Periodically send ping events to a sink
SinkBinding       sinkbindings.sources.knative.dev                Binding for connecting a PodSpecable to a sink

It is also possible to list available event source types in YAML format:

$ kn source list-types -o yaml

Listing available event sources using kn

You can list available event sources by using the following command:

$ kn source list

Here is an example output:

NAME   TYPE              RESOURCE                               SINK         READY
a1     ApiServerSource   apiserversources.sources.knative.dev   svc:eshow2   True
b1     SinkBinding       sinkbindings.sources.knative.dev       svc:eshow3   False
p1     PingSource        pingsources.sources.knative.dev        svc:eshow1   True

Listing event sources of a specific type only

You can list event sources of a specific type only, by using the --type flag. For example, to list all event sources of type PingSource:

$ kn source list --type PingSource

Here is an example output:

NAME   TYPE              RESOURCE                               SINK         READY
p1     PingSource        pingsources.sources.knative.dev        svc:eshow1   True
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