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diff --git a/doc/update/README.md b/doc/update/README.md index 837b31abb97..d024a809f24 100644 --- a/doc/update/README.md +++ b/doc/update/README.md @@ -48,6 +48,20 @@ GitLab provides official Docker images for both Community and Enterprise editions. They are based on the Omnibus package and instructions on how to update them are in [a separate document][omnidocker]. +## Upgrading without downtime + +Starting with GitLab 9.1.0 it's possible to upgrade to a newer major, minor, or patch version of GitLab +without having to take your GitLab instance offline. However, for this to work +there are the following requirements: + +1. You can only upgrade 1 minor release at a time. So from 9.1 to 9.2, not to 9.3. +2. You have to be on the most recent patch release. For example, if 9.1.15 is the last + release of 9.1 then you can safely upgrade from that version to any 9.2.x version. + However, if you are running 9.1.14 you first need to upgrade to 9.1.15. +2. You have to use [post-deployment + migrations](../development/post_deployment_migrations.md). +3. You are using PostgreSQL. If you are using MySQL please look at the release post to see if downtime is required. + ## Upgrading between editions GitLab comes in two flavors: [Community Edition][ce] which is MIT licensed, |