Can we upgrade gitlab version from 12.10 to 15.8

Thanks for the note about tokens, I have edited the post and replaced the token value with REDACTED.

@ravisankar

Formatting tips can be found in https://forum.gitlab.com/t/community-first-steps-code-config-log-block-formatting-in-topics-and-replies/

When I try to import gitlab groups from old to new then I get an SSL error exception. In my old GitLab, we enable SSL. So for this reason I cannot import groups or projects in the new GitLab. Could you suggest to me how I can resolve this.

Please show the exact error message you are seeing on the terminal/UI when running the import commands. This will help make better suggestions on how to proceed (i.e. when it is a self-signed certificate on the new server, let Lets Encrypt obtain a new TLS certificate for the domain first).

We tried to copy users and groups of a specific repo

What is the expected state, and which numbers are we talking about for

  • Users
  • Groups
  • Project repositories

If the environment is too huge, or if there are many customizations, a possible alternative would be a stretched migration plan to not block production longer than needed.

  1. Monthly maintenance window from 12.x to 13.x
  2. Monthly maintenance window for 13.x to 14.x
  3. Monthly maintenance window from 14.x to 15.x