catalogd

Catalogd is a Kubernetes extension that unpacks file-based catalog (FBC) content for on-cluster clients. Currently, catalogd unpacks FBC content that is packaged and distributed as container images. The catalogd road map includes plans for unpacking other content sources, such as Git repositories and OCI artifacts. For more information, see the catalogd issues page.

Catalogd helps customers discover installable content by hosting catalog metadata for Kubernetes extensions, such as Operators and controllers. For more information on the Operator Lifecycle Manager (OLM) v1 suite of microservices, see the documentation for the Operator Controller.

Quickstart DEMO

Quickstart Steps

Procedure steps marked with an asterisk (*) are likely to change with future API updates.

NOTE: The examples below use the -k flag in curl to skip validating the TLS certificates. This is for demonstration purposes only.

1. To install catalogd, navigate to the releases page, and follow the install instructions included in the release you want to install.

2. Create a ClusterCatalog object that points to the OperatorHub Community catalog by running the following command:

   $ kubectl apply -f - << EOF
   apiVersion: olm.operatorframework.io/v1
   kind: ClusterCatalog
   metadata:
     name: operatorhubio
   spec:
     source:
       type: Image
       image:
         ref: quay.io/operatorhubio/catalog:latest
   EOF

3. Verify the ClusterCatalog object was created successfully by running the following command:

   $ kubectl describe clustercatalog/operatorhubio

   Example output

   Name:         operatorhubio
   Namespace:
   Labels:       olm.operatorframework.io/metadata.name=operatorhubio
   Annotations:  <none>
   API Version:  olm.operatorframework.io/v1
   Kind:         ClusterCatalog
   Metadata:
     Creation Timestamp:  2024-10-17T13:48:46Z
     Finalizers:
       olm.operatorframework.io/delete-server-cache
     Generation:        1
     Resource Version:  7908
     UID:               34eeaa91-9f8e-4254-9937-0ae9d25e92df
   Spec:
     Priority:  0
     Source:
       Image:
         Poll Interval:  10m0s
         Ref:            quay.io/operatorhubio/catalog:latest
       Type:             Image
   Status:
     Conditions:
       Last Transition Time:  2024-10-17T13:48:59Z
       Message:               Successfully unpacked and stored content from resolved source
       Observed Generation:   1
       Reason:                Succeeded
       Status:                False
       Type:                  Progressing
       Last Transition Time:  2024-10-17T13:48:59Z
       Message:               Serving desired content from resolved source
       Observed Generation:   1
       Reason:                Available
       Status:                True
       Type:                  Serving
     Last Unpacked:           2024-10-17T13:48:58Z
     Resolved Source:
       Image:
         Last Successful Poll Attempt:  2024-10-17T14:49:59Z
         Ref:                           quay.io/operatorhubio/catalog@sha256:82be554b15ff246d8cc428f8d2f4cf5857c02ce3225d95d92a769ea3095e1fc7
       Type:                            Image
     Urls:
       Base:  https://catalogd-service.olmv1-system.svc/catalogs/operatorhubio
   Events:    <none>

4. Port forward the catalogd-service service in the olmv1-system namespace:

   $ kubectl -n olmv1-system port-forward svc/catalogd-service 8080:443

5. Access the v1/all service endpoint and filter the results to a list of packages by running the following command:

   $ curl https://localhost:8080/catalogs/operatorhubio/api/v1/all | jq -s '.[] | select(.schema == "olm.package") | .name'

   Example output

     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed
   100  110M  100  110M    0     0   112M      0 --:--:-- --:--:-- --:--:--  112M
   "ack-acm-controller"
   "ack-apigatewayv2-controller"
   "ack-applicationautoscaling-controller"
   "ack-cloudtrail-controller"
   "ack-cloudwatch-controller"
   "ack-dynamodb-controller"
   "ack-ec2-controller"
   "ack-ecr-controller"
   "ack-eks-controller"
   "ack-elasticache-controller"
   "ack-emrcontainers-controller"
   "ack-eventbridge-controller"
   "ack-iam-controller"
   "ack-kinesis-controller"
   ...

6. Run the following command to get a list of channels for the ack-acm-controller package:

   $ curl https://localhost:8080/catalogs/operatorhubio/api/v1/all | jq -s '.[] | select(.schema == "olm.channel") | select(.package == "ack-acm-controller") | .name'

   Example output

     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed
   100  110M  100  110M    0     0   115M      0 --:--:-- --:--:-- --:--:--  116M
   "alpha"

7. Run the following command to get a list of bundles belonging to the ack-acm-controller package:

   $ curl https://localhost:8080/catalogs/operatorhubio/api/v1/all | jq -s '.[] | select(.schema == "olm.bundle") | select(.package == "ack-acm-controller") | .name'

   Example output

     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed
   100  110M  100  110M    0     0   122M      0 --:--:-- --:--:-- --:--:--  122M
   "ack-acm-controller.v0.0.1"
   "ack-acm-controller.v0.0.2"
   "ack-acm-controller.v0.0.4"
   "ack-acm-controller.v0.0.5"
   "ack-acm-controller.v0.0.6"
   "ack-acm-controller.v0.0.7"

Contributing

Thanks for your interest in contributing to catalogd!

catalogd is in the very early stages of development and a more in depth contributing guide will come in the near future.

In the meantime, it is assumed you know how to make contributions to open source projects in general and this guide will only focus on how to manually test your changes (no automated testing yet).

If you have any questions, feel free to reach out to us on the Kubernetes Slack channel #olm-dev or create an issue

Testing Local Changes

Prerequisites

• Install kind

Test it out

make run

This will build a local container image for the catalogd controller, create a new KIND cluster and then deploy onto that cluster.