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# Uploads Migrate Rake Task
## Migrate to Object Storage
After [configuring the object storage](../../uploads.md#using-object-storage) for GitLab's uploads, you may use this task to migrate existing uploads from the local storage to the remote storage.
>**Note:**
All of the processing will be done in a background worker and requires **no downtime**.
This tasks uses 3 parameters to find uploads to migrate.
>**Note:**
These parameters are mainly internal to GitLab's structure, you may want to refer to the task list instead below.
Parameter | Type | Description
--------- | ---- | -----------
`uploader_class` | string | Type of the uploader to migrate from
`model_class` | string | Type of the model to migrate from
`mount_point` | string/symbol | Name of the model's column on which the uploader is mounted on.
This task also accepts some environment variables which you can use to override
certain values:
Variable | Type | Description
-------- | ---- | -----------
`BATCH` | integer | Specifies the size of the batch. Defaults to 200.
** Omnibus Installation**
```bash
# gitlab-rake gitlab:uploads:migrate[uploader_class, model_class, mount_point]
# Avatars
gitlab-rake "gitlab:uploads:migrate[AvatarUploader, Project, :avatar]"
gitlab-rake "gitlab:uploads:migrate[AvatarUploader, Group, :avatar]"
gitlab-rake "gitlab:uploads:migrate[AvatarUploader, User, :avatar]"
# Attachments
gitlab-rake "gitlab:uploads:migrate[AttachmentUploader, Note, :attachment]"
gitlab-rake "gitlab:uploads:migrate[AttachmentUploader, Appearance, :logo]"
gitlab-rake "gitlab:uploads:migrate[AttachmentUploader, Appearance, :header_logo]"
# Markdown
gitlab-rake "gitlab:uploads:migrate[FileUploader, Project]"
gitlab-rake "gitlab:uploads:migrate[PersonalFileUploader, Snippet]"
gitlab-rake "gitlab:uploads:migrate[NamespaceFileUploader, Snippet]"
gitlab-rake "gitlab:uploads:migrate[FileUploader, MergeRequest]"
```
**Source Installation**
>**Note:**
Use `RAILS_ENV=production` for every task.
```bash
# sudo -u git -H bundle exec rake gitlab:uploads:migrate
# Avatars
sudo -u git -H bundle exec rake "gitlab:uploads:migrate[AvatarUploader, Project, :avatar]"
sudo -u git -H bundle exec rake "gitlab:uploads:migrate[AvatarUploader, Group, :avatar]"
sudo -u git -H bundle exec rake "gitlab:uploads:migrate[AvatarUploader, User, :avatar]"
# Attachments
sudo -u git -H bundle exec rake "gitlab:uploads:migrate[AttachmentUploader, Note, :attachment]"
sudo -u git -H bundle exec rake "gitlab:uploads:migrate[AttachmentUploader, Appearance, :logo]"
sudo -u git -H bundle exec rake "gitlab:uploads:migrate[AttachmentUploader, Appearance, :header_logo]"
# Markdown
sudo -u git -H bundle exec rake "gitlab:uploads:migrate[FileUploader, Project]"
sudo -u git -H bundle exec rake "gitlab:uploads:migrate[PersonalFileUploader, Snippet]"
sudo -u git -H bundle exec rake "gitlab:uploads:migrate[NamespaceFileUploader, Snippet]"
sudo -u git -H bundle exec rake "gitlab:uploads:migrate[FileUploader, MergeRequest]"
```
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