GenerateArtifactsFlow CRD

For a Linux migration, applying a Migration .yaml creates a migration resource and a GenerateArtifactsFlow .yaml (a Windows migration creates a WindowsGenerateArtifacts .yaml).

You should review and update the GenerateArtifactsFlow .yaml before executing the migration. See Customizing a migration plan for more.

The GenerateArtifactsFlow .yaml has the following format:

apiVersion: anthos-migrate.cloud.google.com/v1beta2
kind: GenerateArtifactsFlow
metadata:
  name: generate-artifacts-flow-id
  namespace: v2k-system
  annotations:
    # See below for an example.
    anthos-migrate.cloud.google.com/always-retake-snapshot: "false"
  ownerReferences:
  - apiVersion: anthos-migrate.cloud.google.com/v1beta2
    blockOwnerDeletion: true
    controller: true
    kind: Migration
    name: migration-name
    uid: id
spec:
  intent: "Image | ImageAndData | Data"
  global:
    filters:
    - '- *.swp'
    - '- /etc/fstab'
    - '- /boot/'
    - '- /tmp/*'
    - '- /var/log/*.log*'
    - '- /var/log/*/*.log*'
    - '- /var/cache/*'
    - '- /var/m4a/*'
  image:
    # imageRepository is optional.
    imageRepository: 
      name: name of image repo spec
    base: "string"
    name: "name"

  systemServices:
    - name: service-name
      enabled: true|false
    - name: service-name
      enabled: true|false
      ...

  dataVolumes:
  - pvc:
      name: "name"
      --or--
      spec: PVC inline Spec
    folders:
    - /folder-name

  deployment:
    appName: app-centos-mini
      # artifactsRepository is optional.
      artifactsRepository: 
        spec:
          bucket: bucket_name
          credentials:
            type: gcs
            secret: secret
    folder: storage-folder-name/
 

Note:

This reference uses the predefined namespace of v2k-system. Migrate for Anthos requires that you use the v2k-system namespace.

Setting the always-retake-snapshot annotation

By default, always-retake-snapshot is set to false. If true, any previous disk snapshots of the migrated VM are deleted, and new snapshots are taken, when you apply a GenerateArtifactsTask .yaml that references this GenerateArtifactsFlow.

This setting can be useful if you want to perform a data sync before the final cut-over to the migrated workload. For example, you might have additional data to sync from the source VM since you last generated the migration artifacts. The always-retake-snapshot annotation lets you take a fresh snapshot to contain that data. Because Migrate for Anthos optimizes the files needed to be copied, files which did not change since the last sync are not be copied again. Only files which have changed are copied.