Gitlab 7.14.3, upgrade and keys

I;m going to migrate gitlab 7.14.3 to a new server, after that we will make needed steps to upgrade upgrade to 8.x.
Now I migrate gitlab 7.14.3 to new server (installed froim source to installed from Centos packages).

In /home/git/gitlab/.secret I’ve found only one secret - is it a gitlab_rails token gitlab_rails ?
In /home/git/gitlab/.gitlab_shell_secret I’ve found one secret, is it a gitlab_shell?
I’ve moved this keys to /etc/gitlab/gitlab-secrets.json, but my old installation, doesn’t have /home/git/gitlab/config/secret.yml file. Where can I find secrets from this file?

Thank you.

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