In https://gitlab.com/gitlab-org/gitlab/-/issues/32720, we added support for Postgres chart 8.2.1 (let's call this `Postgres version 2`). But Auto DevOps currently defaults to Postgres chart 0.7.1 (Let's call this `Postgres version 1`). In GitLab 13.0, we want to change the default from `Postgres version 1` to `Postgres version 2`. ## Impact With https://gitlab.com/gitlab-org/gitlab/-/issues/211890 implemented, the impact on pipelines utilizing the legacy option is that the pipeline will refuse to proceed. User will have to additionally opt-in to switch from legacy to new option as this actively deletes the legacy DB. ## Impact on GitLab.com As we will implement a stop and fail pipeline solution, I think this is OK to release on GitLab.com whenever it's ready. ## Proposal 1. https://gitlab.com/gitlab-org/gitlab/-/issues/211890 2. Change the default from `Postgres version 1` to `Postgres version 2`. (precisely, change `AUTO_DEVOPS_POSTGRES_CHANNEL` from default `1` to `2`) - This is a safe operation if this is the first Auto DevOps deploy, or they have previously already been using `Postgres version 2`. - Also bump `POSTGRES_VERSION` to `9.6.16` ## Follow-up issue - https://gitlab.com/gitlab-org/gitlab/-/issues/217906