6.2. Instalação do Migration Toolkit for Containers Operator herdado no OpenShift Container Platform 3

Procedimento

1. Faça login em register.redhat.io com suas credenciais do Portal do Cliente da Red Hat:

   $ sudo podman login registry.redhat.io

2. Faça download do arquivo operator.yml:

   $ sudo podman cp $(sudo podman create \
     registry.redhat.io/rhmtc/openshift-migration-legacy-rhel8-operator:v1.5.3):/operator.yml ./

3. Faça download do arquivo controller.yml:

   $ sudo podman cp $(sudo podman create \
     registry.redhat.io/rhmtc/openshift-migration-legacy-rhel8-operator:v1.5.3):/controller.yml ./

4. Faça login no seu cluster do OpenShift Container Platform 3.

5. Verifique se o cluster consegue fazer a autenticação com registry.redhat.io:

   $ oc run test --image registry.redhat.io/ubi8 --command sleep infinity

6. Crie o objeto do Migration Toolkit for Containers Operator:

   $ oc create -f operator.yml

   Exemplo de saída

   namespace/openshift-migration created
   rolebinding.rbac.authorization.k8s.io/system:deployers created
   serviceaccount/migration-operator created
   customresourcedefinition.apiextensions.k8s.io/migrationcontrollers.migration.openshift.io created
   role.rbac.authorization.k8s.io/migration-operator created
   rolebinding.rbac.authorization.k8s.io/migration-operator created
   clusterrolebinding.rbac.authorization.k8s.io/migration-operator created
   deployment.apps/migration-operator created
   Error from server (AlreadyExists): error when creating "./operator.yml":
   rolebindings.rbac.authorization.k8s.io "system:image-builders" already exists 

   1

   
   Error from server (AlreadyExists): error when creating "./operator.yml":
   rolebindings.rbac.authorization.k8s.io "system:image-pullers" already exists

   1

   Você pode ignorar as mensagens Error from server (AlreadyExists). Elas são geradas pelo Migration Toolkit for Containers Operator, que cria recursos para versões anteriores do OpenShift Container Platform 3, fornecidos em versões posteriores.

7. Crie o objeto MigrationController:

   $ oc create -f controller.yml

8. Verifique se os pods do MTC estão em execução:

   $ oc get pods -n openshift-migration