gitlab-org--gitlab-foss/doc/administration/raketasks/praefect.md

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---
stage: Create
group: Gitaly
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
type: reference
---
# Praefect Rake tasks **(FREE SELF)**
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/28369) in GitLab 12.10.
Rake tasks are available for projects that have been created on Praefect storage. See the
[Praefect documentation](../gitaly/praefect.md) for information on configuring Praefect.
## Replica checksums
`gitlab:praefect:replicas` prints out checksums of the repository of a given `project_id` on:
- The primary Gitaly node.
- Secondary internal Gitaly nodes.
**Omnibus Installation**
```shell
sudo gitlab-rake "gitlab:praefect:replicas[project_id]"
```
**Source Installation**
```shell
sudo -u git -H bundle exec rake "gitlab:praefect:replicas[project_id]" RAILS_ENV=production
```