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diff --git a/doc/update/README.md b/doc/update/README.md index 974982da5d0..42c43110a19 100644 --- a/doc/update/README.md +++ b/doc/update/README.md @@ -135,6 +135,30 @@ If you need to downgrade your Enterprise Edition installation back to Community Edition, you can follow [this guide][ee-ce] to make the process as smooth as possible. +## Version specific upgrading instructions + +### 12.2.0 + +In 12.2.0, we enabled Rails' authenticated cookie encryption. Old sessions are +automatically upgraded. + +However, session cookie downgrades are not supported. So after upgrading to 12.2.0, +any downgrades would result to all sessions being invalidated and users are logged out. + +### 12.0.0 + +In 12.0.0 we made various database related changes. These changes require that +users first upgrade to the latest 11.11 patch release. Once upgraded to 11.11.x, +users can upgrade to 12.x. Failure to do so may result in database migrations +not being applied, which could lead to application errors. + +Example 1: you are currently using GitLab 11.11.3, which is the latest patch +release for 11.11.x. You can upgrade as usual to 12.0.0, 12.1.0, etc. + +Example 2: you are currently using a version of GitLab 10.x. To upgrade, first +upgrade to 11.11.3. Once upgraded to 11.11.3 you can safely upgrade to 12.0.0 +or future versions. + ## Miscellaneous - [MySQL to PostgreSQL](mysql_to_postgresql.md) guides you through migrating |