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Chapter 7. Invoking functions
You can test a deployed function by invoking it. You can do it using the kn func tool.
7.1. Invoking a deployed function with a test event
You can use the kn func invoke CLI command to send a test request to invoke a function either locally or on your OpenShift Container Platform cluster. You can use this command to test that a function is working and able to receive events correctly. Invoking a function locally is useful for a quick test during function development. Invoking a function on the cluster is useful for testing that is closer to the production environment.
Prerequisites
- The OpenShift Serverless Operator and Knative Serving are installed on the cluster.
-
You have installed the Knative (
kn) CLI. - You have created a project or have access to a project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
- You must have already deployed the function that you want to invoke.
Procedure
Invoke a function:
$ kn func invoke
-
The
kn func invokecommand only works when there is either a local container image currently running, or when there is a function deployed in the cluster. -
The
kn func invokecommand executes on the local directory by default, and assumes that this directory is a function project.
-
The
