Red Hat SummitChapter 6. Catalog selection by labels or expressions
You can add metadata to a catalog by using labels in the custom resource (CR) of a cluster catalog. You can then filter catalog selection by specifying the assigned labels or using expressions in the CR of the cluster extension.
The following cluster catalog CR adds the example.com/support label with the value of true to the catalog-a cluster catalog:
Example cluster catalog CR with labels
apiVersion: olm.operatorframework.io/v1
kind: ClusterCatalog
metadata:
name: catalog-a
labels:
example.com/support: "true"
spec:
source:
type: Image
image:
ref: quay.io/example/content-management-a:latest
The following cluster extension CR uses the matchLabels selector to select catalogs with the example.com/support label and the value of true:
Example cluster extension CR with matchLabels selector
apiVersion: olm.operatorframework.io/v1
kind: ClusterExtension
metadata:
name: <example_extension>
spec:
namespace: <example_namespace>
serviceAccount:
name: <example_extension>-installer
source:
sourceType: Catalog
catalog:
packageName: <example_extension>-operator
selector:
matchLabels:
example.com/support: "true"
You can use the matchExpressions field to perform more complex filtering for labels. The following cluster extension CR selects catalogs with the example.com/support label and a value of production or supported:
Example cluster extension CR with matchExpression selector
apiVersion: olm.operatorframework.io/v1
kind: ClusterExtension
metadata:
name: <example_extension>
spec:
namespace: <example_namespace>
serviceAccount:
name: <example_extension>-installer
source:
sourceType: Catalog
catalog:
packageName: <example_extension>-operator
selector:
matchExpressions:
- key: example.com/support
operator: In
values:
- "production"
- "supported"
If you use both the matchLabels and matchExpressions fields, the selected catalog must satisfy all specified criteria.
