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mig-e2e

End to end tests for OCP 3 to 4 Migration

Pre-requisites

  • OCP3 v3.7 (or higher) and OCP4 clusters, these would be the source and destination clusters used to migrate workloads
  • mig-controller must be deployed on one of the two clusters
  • Velero must be deployed on both clusters and will be driven by mig-controller (see instructions here)
  • S3 temporary migration storage must be provisioned on AWS for mig-controller to consume
  • NFS or other compatible volume storage must be provisioned on both clusters for PVC based test

Mig-controller config variables

A number of parameters need to be set with the correct environment in order to create the CRs for migration purposes. A sample file is supplied, please make changes as necessary.

See below for a decription of these paremeters :

Parameter Purpose
mig_controller_remote_cluster_url Endpoint of remote cluster mig-controller will connect to
mig_controller_aws_access_key Base64 encoded AWS access key to auth with AWS services
mig_controller_aws_secret_key Base64 encoded AWS secret access key to auth with AWS services
mig_controller_sa_token Base64 encoded SA token used to authenticate with remote cluster
mig_controller_aws_bucket_name Name of the S3 bucket to be used for temporary Migration storage
mig_controller_aws_bucket_region Region of S3 bucket to be used for temporary Migration storage

Other considerations

  • You must active sessions on the source and destination clusters before attempting to run any tests
  • By default, the destination cluster (OCP4) is assumed to be the host for mig-controller
  • Stateful applications tests such as nfs-pv require PVs to allocated on source and destination clusters

Running mig-controller sample tests

On the source cluster, deploy all sample tests

$ ansible-playbook e2e_mig_samples.yml -e "with_migrate=false"

On the destination cluster (mig-controller host) , migrate all sample tests

$ ansible-playbook e2e_mig_samples.yml -e "with_deploy=false"

Alternatively you can deploy (or migrate) a single or multiple sample tests by using tags

ansible-playbook e2e_mig_samples.yml --tags=sock-shop -e "with_migrate=false"
ansible-playbook e2e_mig_samples.yml --tags=sock-shop,parks-app -e "with_deploy=false"

The migrations will be tracked to completion, you can also check the status of each phase of the migration using :

$ oc -n mig describe migmigration nginx-mig-1560432273
Name:         nginx-mig-1560432273
Namespace:    mig
Labels:       controller-tools.k8s.io=1.0
Annotations:  touch=ac3a02d7-3249-4d19-9978-53b39cd2f93a
API Version:  migration.openshift.io/v1alpha1
Kind:         MigMigration
Metadata:
  Creation Timestamp:  2019-06-13T13:24:56Z
  Generation:          1
  Resource Version:    16515215
  Self Link:           /apis/migration.openshift.io/v1alpha1/namespaces/mig/migmigrations/nginx-mig-1560432273
  UID:                 a2d9e866-8dde-11e9-8678-0e0ae8a21422
Spec:
  Mig Plan Ref:
    Name:       nginx-migplan-1560432273
    Namespace:  mig
  Stage:        false
Status:
  Completion Timestamp:  2019-06-13T13:28:06Z
  Conditions:
    Category:              Critical
    Last Transition Time:  2019-06-13T13:28:06Z
    Message:               The referenced `migPlanRef` does not have a `Ready` condition.
    Status:                True
    Type:                  PlanNotReady
  Migration Completed:     true
  Phase:                   Completed
  Start Timestamp:         2019-06-13T13:24:57Z
Events:                    <none>

Note: The migration name will be printed during the ansible playbook run