Create a run-book style doc for what to do in a data loss scenario
We have a couple of diagnostic tools for detecting data loss. We have the rake task for printing out checksums of a project repository: https://gitlab.com/gitlab-org/gitlab/-/blob/master/doc/administration/raketasks/praefect.md
we also have a command for detecting dataloss https://docs.gitlab.com/ee/administration/gitaly/praefect.html#identifying-impact-of-a-primary-node-failure
As well as a reconcile command to sync secondary nodes with a primary: sudo /opt/gitlab/embedded/bin/praefect -config /var/opt/gitlab/praefect/config.toml reconcile -virtual -target
It would be more user friendly for customers if these were all consolidated under a runbook that's close to the praefect docs.