jaydipgabani/crane-operator

Migration Toolkit for Kubernetes Operator

Migration Toolkit for Red Hat OpenShift Operator

This operator is the entrypoint for installing the Migration Toolkit for Red Hat OpenShift (crane).

A list of our components

• crane CLI https://github.com/konveyor/crane

• The OpenShift UI Console plugin https://github.com/konveyor/crane-ui-plugin

• A runtime image for the crane cli https://github.com/konveyor/crane-runner/

• Proxy that allows the plugin to communicate with remote clusters https://github.com/konveyor/crane-reverse-proxy

• Service for managing secrets related to remote clusters https://github.com/konveyor/crane-secret-service

Compatibility

Note:

• crane is compatible with OpenShift 4.10.11/4.10.11+ versions.
• Go 1.18 version needed to build operator

Dependencies

1. Crane installs pipeline operator as dependency in <installation> namespace. (Note: This will not impact any existing installation of the pipeline operator. Uninstalling mtRHO later also will not impact the pipeline operator.)
2. Make sure ClusterTask, Pipeline CRDs are available after the installation of Pipeline operator. It might take a minute or two before the CRDs appear.

Default Installation

Making the crane-operator available in your cluster is as simple as creating the CatalogSource:

oc apply -f https://raw.githubusercontent.com/konveyor/crane-operator/main/crane-catalogsource.yaml

Then, using the console UI, from operator hub install the crane Operator.

Note:

• For now crane and MTC are not compatible within a same namespace if installed using OLM and operator hub.

Custom Installation

To build images from the latest code use the below instructions.

Building custom images

1. Set quay org, tag and image base

   export ORG=your-quay-org
   export VERSION=99.0.0
   export IMAGE_TAG_BASE=quay.io/$ORG/crane-operator

2. Run from the root of the crane-operator repo to build container image and push it.

   docker build -f Dockerfile -t quay.io/$ORG/crane-operator-container:$VERSION .
   docker push  quay.io/$ORG/crane-operator-container:$VERSION

3. Update /config/manager/manager.yaml to use your own custom image for container.

   [...]
      containers:
        - command:
          - /manager
          args:
          - --leader-elect
          image: quay.io/$ORG/crane-operator-container:$VERSION
          imagePullPolicy: Always
          name: manager

4. Run from the root of crane-operator repo to build operator bundle.

   make bundle
   make bundle-build
   make bundle-push

5. Run from the root of crane-operator repo to build operator index.

    opm index add --container-tool podman --bundles quay.io/$ORG/crane-operator-bundle:v$VERSION --tag quay.io/$ORG/crane-operator-index:v$VERSION
    podman push quay.io/$ORG/crane-operator-index:v$VERSION
   

Note: Make sure your quay repos are public

Installing Operator

1. Create CatalogSource by running the following command.

   cat << EOF > catalogsource.yaml
   apiVersion: operators.coreos.com/v1alpha1
   kind: CatalogSource
   metadata:
     name: crane-operator
     namespace: openshift-marketplace
   spec:
     image: 'quay.io/$ORG/crane-operator-index:v$VERSION'
     sourceType: grpc
   EOF
   
   oc create -f catalogsource.yaml

2. Install crane operator from operator hub, choose to enable console plugin while installing operator

3. Create operatorConfig CR to initiate installation of proxy, crane-ui-plugin, and cluster tasks needed for migration

   cat << EOF > openshift-migration.yaml
   apiVersion: crane.konveyor.io/v1alpha1
   kind: OperatorConfig
   metadata:
     name: openshift-migration
   spec: {}
   EOF
   
   oc create -f openshift-migration.yaml

Clean up

1. Remove All operatorConfig CR

    oc delete operatorconfigs.crane.konveyor.io --all

2. Delete subscription or uninstall form operator hub.

3. Remove CRD

   oc delete crd operatorconfigs.crane.konveyor.io