Adding a catalog of operators
Operator authors have the mechanisms to offer their product as part of a curated catalog of operators, that they can push updates to over-the-air (eg publish new versions, publish patched versions with CVEs, etc). Cluster admins can sign up to receive these updates on clusters, by adding the catalog to the cluster. When a catalog is added to a cluster, the kubernetes extension packages (operators, or any other extension package) in that catalog become available on cluster for installation and receiving updates.
For example, the k8s-operatorhub/community-operators is a catalog of curated operators that contains a list of operators being developed by the community. The list of operators can be viewed in Operatorhub.io. This catalog is distributed as an image quay.io/operatorhubio/catalog for consumption on clusters.
To consume this catalog on cluster, create a Catalog Custom Resource(CR) with the image specified in the spec.source.image field:
$ kubectl apply -f - <<EOF
apiVersion: catalogd.operatorframework.io/v1alpha1
kind: Catalog
metadata:
name: operatorhubio
spec:
source:
type: image
image:
ref: quay.io/operatorhubio/catalog:latest
EOF
The packages made available for installation/receiving updates on cluster can then be explored by querying the Package and BundleMetadata CRs:
$ kubectl get packages
NAME AGE
operatorhubio-ack-acm-controller 3m12s
operatorhubio-ack-apigatewayv2-controller 3m12s
operatorhubio-ack-applicationautoscaling-controller 3m12s
operatorhubio-ack-cloudtrail-controller 3m12s
operatorhubio-ack-dynamodb-controller 3m12s
operatorhubio-ack-ec2-controller 3m12s
operatorhubio-ack-ecr-controller 3m12s
operatorhubio-ack-eks-controller 3m12s
operatorhubio-ack-elasticache-controller 3m12s
operatorhubio-ack-emrcontainers-controller 3m12s
operatorhubio-ack-eventbridge-controller 3m12s
operatorhubio-ack-iam-controller 3m12s
operatorhubio-ack-kinesis-controller 3m12s
operatorhubio-ack-kms-controller 3m12s
operatorhubio-ack-lambda-controller 3m12s
operatorhubio-ack-memorydb-controller 3m12s
operatorhubio-ack-mq-controller 3m12s
operatorhubio-ack-opensearchservice-controller 3m12s
.
.
.
$ kubectl get bundlemetadata
NAME AGE
operatorhubio-ack-acm-controller.v0.0.1 3m58s
operatorhubio-ack-acm-controller.v0.0.2 3m58s
operatorhubio-ack-acm-controller.v0.0.4 3m58s
operatorhubio-ack-acm-controller.v0.0.5 3m58s
operatorhubio-ack-acm-controller.v0.0.6 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.10 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.11 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.12 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.13 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.14 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.15 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.16 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.17 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.18 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.19 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.20 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.21 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.22 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.0.9 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.1.0 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.1.1 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.1.2 3m58s
operatorhubio-ack-apigatewayv2-controller.v0.1.3 3m58s
.
.
.