Improve Gitaly HA setup docs
Problem to solve
The docs are not very clear. These need to be improved.
Proposal
- Not clear how many servers needed. Can the components be run on the same box
- Not explicit that Gitaly steps need to be completed 3 times. What should be the same? What should be different?
- Routing of GitLab storage to Praefect to GitLab isn’t clear. What storage maps to which. Every Gitaly should have a unique storage location.
- You can have all the storage locations in every Gitaly config, and then rely on Praefect.
- Victory step. It’s all working now.
- Migration docs for existing projects