Skip to content

Add documentation to sinkbinding modes #3101

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Dec 17, 2020
Merged

Add documentation to sinkbinding modes #3101

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 7 additions & 0 deletions docs/eventing/sources/sinkbinding.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,13 @@ For example, `Deployment`, `Job`, `DaemonSet`, or `StatefulSet` objects, or Knat

Sink binding injects environment variables into the `PodTemplateSpec` of the event sink, so that the application code does not need to interact directly with the Kubernetes API to locate the event destination.

Sink binding operates in one of two modes; `Inclusion` or `Exclusion`.
You can set the mode by modifying the `SINK_BINDING_SELECTION_MODE` of the `eventing-webhook` deployment accordingly. The mode determines the default scope of the webhook.

By default, the webhook is set to `exclusion` mode, which means that any namespace that does not have the label `bindings.knative.dev/exclude: true` will be subject to mutation evalutation.

If `SINK_BINDING_SELECTION_MODE` is set to `inclusion`, only the resources in a namespace labelled with `bindings.knative.dev/include: true` will be considered. In `inclusion` mode, any SinkBinding resource created will automatically label the `subject` namespace with `bindings.knative.dev/include: true` for inclusion in the potential environment variable inclusions.

## Getting started

The following procedures show how you can create a sink binding and connect it to a service and event source in your cluster.
Expand Down