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56 lines
1.8 KiB
Plaintext
56 lines
1.8 KiB
Plaintext
// Module included in the following assemblies:
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//
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// * migrating_from_ocp_3_to_4/troubleshooting-3-4.adoc
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// * migration_toolkit_for_containers/troubleshooting-mtc
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:_mod-docs-content-type: PROCEDURE
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[id="migration-rolling-back-migration-cli_{context}"]
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= Rolling back a migration from the command-line interface
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You can roll back a migration by creating a `MigMigration` custom resource (CR) from the command-line interface.
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[NOTE]
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====
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The following resources remain in the migrated namespaces for debugging after a failed direct volume migration (DVM):
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* Config maps (source and destination clusters)
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* `Secret` objects (source and destination clusters)
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* `Rsync` CRs (source cluster)
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These resources do not affect rollback. You can delete them manually.
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If you later run the same migration plan successfully, the resources from the failed migration are deleted automatically.
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====
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If your application was stopped during a failed migration, you must roll back the migration to prevent data corruption in the persistent volume.
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Rollback is not required if the application was not stopped during migration because the original application is still running on the source cluster.
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.Procedure
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. Create a `MigMigration` CR based on the following example:
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+
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[source,yaml]
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----
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$ cat << EOF | oc apply -f -
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apiVersion: migration.openshift.io/v1alpha1
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kind: MigMigration
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metadata:
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labels:
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controller-tools.k8s.io: "1.0"
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name: <migmigration>
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namespace: openshift-migration
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spec:
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...
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rollback: true
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...
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migPlanRef:
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name: <migplan> <1>
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namespace: openshift-migration
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EOF
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----
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<1> Specify the name of the associated `MigPlan` CR.
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. In the {mtc-short} web console, verify that the migrated project resources have been removed from the target cluster.
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. Verify that the migrated project resources are present in the source cluster and that the application is running.
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