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Commit 628c7048 authored by Achilleas Pipinellis's avatar Achilleas Pipinellis Committed by Marcin Sedlak-Jakubowski
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Update the upgrade guide 

- Move relevant information from the maintenance doc
- Rearrange sections
- Merge the specific 12.0 section to the major upgrade section
parent f1bdac24
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doc/policy/maintenance.md
View file @ 628c7048
---
stage: none
group: unassigned
stage: Enablement
group: Distribution
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
type: concepts
---
......@@ -57,21 +57,11 @@ one major version. For example, it is safe to:
- `12.7.5` -> `12.10.5`
- `11.3.4` -> `11.11.1`
- `10.6.6` -> `10.8.3`
- `11.3.4` -> `11.11.8`
- `10.6.6` -> `10.8.7`
- `9.2.3` -> `9.5.5`
- `8.9.4` -> `8.12.3`
- Upgrade the *patch* version. For example:
- `12.0.4` -> `12.0.12`
- `11.11.1` -> `11.11.8`
- `10.6.3` -> `10.6.6`
- `11.11.1` -> `11.11.8`
- `10.6.3` -> `10.6.6`
- `9.5.5` -> `9.5.9`
- `8.9.2` -> `8.9.6`
NOTE: **Note:**
Version specific changes in Omnibus GitLab Linux packages can be found in [the Omnibus GitLab documentation](https://docs.gitlab.com/omnibus/update/README.html#version-specific-changes).
......@@ -82,87 +72,9 @@ Instructions are available for downloading an Omnibus GitLab Linux package local
NOTE: **Note:**
A step-by-step guide to [upgrading the Omnibus-bundled PostgreSQL is documented separately](https://docs.gitlab.com/omnibus/settings/database.html#upgrade-packaged-postgresql-server).
### Upgrading major versions
Upgrading the *major* version requires more attention.
Backward-incompatible changes and migrations are reserved for major versions.
We cannot guarantee that upgrading between major versions will be seamless.
We suggest upgrading to the latest available *minor* version within
your major version before proceeding to the next major version.
Doing this will address any backward-incompatible changes or deprecations
to help ensure a successful upgrade to the next major release.
It's also important to ensure that any background migrations have been fully completed
before upgrading to a new major version. To see the current size of the `background_migration` queue,
[Check for background migrations before upgrading](../update/README.md#checking-for-background-migrations-before-upgrading).
If your GitLab instance has any runners associated with it, it is very
important to upgrade GitLab Runner to match the GitLab minor version that was
upgraded to. This is to ensure [compatibility with GitLab versions](https://docs.gitlab.com/runner/#compatibility-with-gitlab-versions).
### Version 12 onward: Extra step for major upgrades
From version 12 onward, an additional step is required. More significant migrations
may occur during major release upgrades.
NOTE: **Note:**
If you are planning to upgrade from `12.0.x` to `12.10.x`, it is necessary to perform an intermediary upgrade to `12.1.x`
before upgrading to `12.10.x` to avoid [#215141](https://gitlab.com/gitlab-org/gitlab/-/issues/215141).
To ensure these are successful:
1. Increment to the first minor version (`x.0.x`) during the major version jump.
1. Proceed with upgrading to a newer release.
**For example: `11.5.x` -> `11.11.x` -> `12.0.x` -> `12.1.x` -> `12.10.x` -> `13.0.x`**
### Example upgrade paths
Please see the table below for some examples:
## Upgrading major versions
| Target version | Your version | Recommended upgrade path | Note |
| --------------------- | ------------ | ------------------------ | ---- |
| `13.4.3` | `12.9.2` | `12.9.2` -> `12.10.14` -> `13.0.14` -> `13.4.3` | Two intermediate versions are required: the final `12.10` release, plus `13.0`. |
| `13.2.10` | `11.5.0` | `11.5.0` -> `11.11.8` -> `12.0.12` -> `12.1.17` -> `12.10.14` -> `13.0.14` -> `13.2.10` | Five intermediate versions are required: the final `11.11`, `12.0`, `12.1` and `12.10` releases, plus `13.0`. |
| `12.10.14` | `11.3.4` | `11.3.4` -> `11.11.8` -> `12.0.12` -> `12.1.17` -> `12.10.14` | Three intermediate versions are required: the final `11.11` and `12.0` releases, plus `12.1` |
| `12.9.5` | `10.4.5` | `10.4.5` -> `10.8.7` -> `11.11.8` -> `12.0.12` -> `12.1.17` -> `12.9.5` | Four intermediate versions are required: `10.8`, `11.11`, `12.0` and `12.1`, then `12.9.5` |
| `12.2.5` | `9.2.6` | `9.2.6` -> `9.5.10` -> `10.8.7` -> `11.11.8` -> `12.0.12` -> `12.1.17` -> `12.2.5` | Five intermediate versions are required: `9.5`, `10.8`, `11.11`, `12.0`, `12.1`, then `12.2`. |
| `11.3.4` | `8.13.4` | `8.13.4` -> `8.17.7` -> `9.5.10` -> `10.8.7` -> `11.3.4` | `8.17.7` is the last version in version 8, `9.5.10` is the last version in version 9, `10.8.7` is the last version in version 10. |
### Upgrades from versions earlier than 8.12
- `8.11.x` and earlier: you might have to upgrade to `8.12.0` specifically before you can upgrade to `8.17.7`. This was [reported in an issue](https://gitlab.com/gitlab-org/gitlab/-/issues/207259).
- [CI changes prior to version 8.0](https://docs.gitlab.com/omnibus/update/README.html#updating-gitlab-ci-from-prior-540-to-version-714-via-omnibus-gitlab)
when it was merged into GitLab.
### Multi-step upgrade paths with GitLab all-in-one Linux package repository
Linux package managers default to installing the latest available version of a package for installation and upgrades.
Upgrading directly to the latest major version can be problematic for older GitLab versions that require a multi-stage upgrade path.
When following an upgrade path spanning multiple versions, for each upgrade, specify the intended GitLab version number in your package manager's install or upgrade command.
Examples:
```shell
# apt-get (Ubuntu/Debian)
sudo apt-get upgrade gitlab-ee=12.0.12-ee.0
# yum (RHEL/CentOS 6 and 7)
yum install gitlab-ee-12.0.12-ee.0.el7
# dnf (RHEL/CentOS 8)
dnf install gitlab-ee-12.0.12-ee.0.el8
# zypper (SUSE)
zypper install gitlab-ee=12.0.12-ee.0
```
To identify the GitLab version number in your package manager, run the following commands:
```shell
# apt-cache (Ubuntu/Debian)
sudo apt-cache madison gitlab-ee
# yum (RHEL/CentOS 6 and 7)
yum --showduplicates list gitlab-ee
```
Backward-incompatible changes and migrations are reserved for major versions. See the [upgrade guide](../update/README.md#upgrading-to-a-new-major-version).
## Patch releases
......@@ -237,19 +149,6 @@ This decision is made on a case-by-case basis.
## More information
Check [our release posts](https://about.gitlab.com/releases/categories/releases/).
Each month, we publish either a major or minor release of GitLab. At the end
of those release posts, there are three sections to look for: Deprecations, Removals, and Important notes on upgrading. These will include:
- Steps you need to perform as part of an upgrade.
For example [8.12](https://about.gitlab.com/releases/2016/09/22/gitlab-8-12-released/#upgrade-barometer)
required the Elasticsearch index to be recreated. Any older version of GitLab upgrading to 8.12 or higher would require this.
- Changes to the versions of software we support such as
[ceasing support for IE11 in GitLab 13](https://about.gitlab.com/releases/2020/03/22/gitlab-12-9-released/#ending-support-for-internet-explorer-11).
You should check all the major and minor versions you're passing over.
More information about the release procedures can be found in our
[release documentation](https://gitlab.com/gitlab-org/release/docs). You may also want to read our
[Responsible Disclosure Policy](https://about.gitlab.com/security/disclosure/).
doc/update/README.md
View file @ 628c7048
---
stage: none
group: unassigned
stage: Enablement
group: Distribution
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
---
# Updating GitLab
# Upgrading GitLab
Depending on the installation method and your GitLab version, there are multiple
update guides.
Upgrading GitLab is a relatively straightforward process, but the complexity
can increase based on the installation method you have used, how old your
GitLab version is, if you're upgrading to a major version, and so on.
Make sure to read the whole page as it contains information related to every upgrade method.
The [maintenance policy documentation](../policy/maintenance.md)
has additional information about upgrading, including:
There are currently 3 official ways to install GitLab:
- How to interpret GitLab product versioning.
- Recommendations on the what release to run.
- How we use patch and security patch releases.
- When we backport code changes.
## Upgrade based on installation method
Depending on the installation method and your GitLab version, there are multiple
official ways to update GitLab:
- [Omnibus packages](#omnibus-packages)
- [Source installation](#installation-from-source)
- [Docker installation](#installation-using-docker)
- [Linux packages (Omnibus GitLab)](#linux-packages-omnibus-gitlab)
- [Source installations](#installation-from-source)
- [Docker installations](#installation-using-docker)
- [Kubernetes (Helm) installations](#installation-using-helm)
Based on your installation, choose a section below that fits your needs.
### Linux packages (Omnibus GitLab)
## Omnibus Packages
The [Omnibus update guide](https://docs.gitlab.com/omnibus/update/)
contains the steps needed to update a package installed by GitLab's official
repositories.
- The [Omnibus update guide](https://docs.gitlab.com/omnibus/update/README.html)
contains the steps needed to update an Omnibus GitLab package.
There are also instructions when you want to
[update to a specific version](https://docs.gitlab.com/omnibus/update/#multi-step-upgrade-using-the-official-repositories).
## Installation from source
### Installation from source
- [Upgrading Community Edition and Enterprise Edition from
source](upgrading_from_source.md) - The guidelines for upgrading Community
Edition and Enterprise Edition from source.
- [Patch versions](patch_versions.md) guide includes the steps needed for a
patch version, such as 6.2.0 to 6.2.1, and apply to both Community and Enterprise
patch version, such as 13.2.0 to 13.2.1, and apply to both Community and Enterprise
Editions.
In the past we used separate documents for the upgrading instructions, but we
......@@ -38,82 +55,20 @@ can still be found in the Git repository:
- [Old upgrading guidelines for Community Edition](https://gitlab.com/gitlab-org/gitlab-foss/tree/11-8-stable/doc/update)
- [Old upgrading guidelines for Enterprise Edition](https://gitlab.com/gitlab-org/gitlab/tree/11-8-stable-ee/doc/update)
## Installation using Docker
### Installation using Docker
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](https://docs.gitlab.com/omnibus/docker/README.html).
## 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:
- You can only upgrade 1 minor release at a time. So from 9.1 to 9.2, not to
9.3.
- You have to use [post-deployment
migrations](../development/post_deployment_migrations.md) (included in
zero downtime update steps below).
- You are using PostgreSQL. Starting from GitLab 12.1, MySQL is not supported.
- Multi-node GitLab instance. Single-node instances may experience brief interruptions
[as services restart (Puma in particular)](https://docs.gitlab.com/omnibus/update/README.html#single-node-deployment).
Most of the time you can safely upgrade from a patch release to the next minor
release if the patch release is not the latest. For example, upgrading from
9.1.1 to 9.2.0 should be safe even if 9.1.2 has been released. We do recommend
you check the release posts of any releases between your current and target
version just in case they include any migrations that may require you to upgrade
1 release at a time.
### Installation using Helm
Some releases may also include so called "background migrations". These
migrations are performed in the background by Sidekiq and are often used for
migrating data. Background migrations are only added in the monthly releases.
GitLab can be deployed into a Kubernetes cluster using Helm.
Instructions on how to update a cloud-native deployment are in
[a separate document](https://docs.gitlab.com/charts/installation/upgrade.html).
Certain major/minor releases may require a set of background migrations to be
finished. To guarantee this such a release will process any remaining jobs
before continuing the upgrading procedure. While this won't require downtime
(if the above conditions are met) we recommend users to keep at least 1 week
between upgrading major/minor releases, allowing the background migrations to
finish. The time necessary to complete these migrations can be reduced by
increasing the number of Sidekiq workers that can process jobs in the
`background_migration` queue. To see the size of this queue,
[Check for background migrations before upgrading](#checking-for-background-migrations-before-upgrading).
As a rule of thumb, any database smaller than 10 GB won't take too much time to
upgrade; perhaps an hour at most per minor release. Larger databases however may
require more time, but this is highly dependent on the size of the database and
the migrations that are being performed.
### Examples
To help explain this, let's look at some examples.
**Example 1:** You are running a large GitLab installation using version 9.4.2,
which is the latest patch release of 9.4. When GitLab 9.5.0 is released this
installation can be safely upgraded to 9.5.0 without requiring downtime if the
requirements mentioned above are met. You can also skip 9.5.0 and upgrade to
9.5.1 once it's released, but you **can not** upgrade straight to 9.6.0; you
_have_ to first upgrade to a 9.5.x release.
**Example 2:** You are running a large GitLab installation using version 9.4.2,
which is the latest patch release of 9.4. GitLab 9.5 includes some background
migrations, and 10.0 will require these to be completed (processing any
remaining jobs for you). Skipping 9.5 is not possible without downtime, and due
to the background migrations would require potentially hours of downtime
depending on how long it takes for the background migrations to complete. To
work around this you will have to upgrade to 9.5.x first, then wait at least a
week before upgrading to 10.0.
**Example 3:** You use MySQL as the database for GitLab. Any upgrade to a new
major/minor release will require downtime. If a release includes any background
migrations this could potentially lead to hours of downtime, depending on the
size of your database. To work around this you will have to use PostgreSQL and
meet the other online upgrade requirements mentioned above.
### Steps
Steps to [upgrade without downtime](https://docs.gitlab.com/omnibus/update/README.html#zero-downtime-updates).
Use the [version mapping](https://docs.gitlab.com/charts/installation/version_mappings.html)
from the chart version to GitLab version to determine the [upgrade path](#upgrade-paths).
## Checking for background migrations before upgrading
......@@ -136,8 +91,6 @@ puts Sidekiq::Queue.new("background_migration").size
Sidekiq::ScheduledSet.new.select { |r| r.klass == 'BackgroundMigrationWorker' }.size
```
---
**For installations from source**
If using GitLab 12.9 and newer, run:
......@@ -159,7 +112,6 @@ Sidekiq::ScheduledSet.new.select { |r| r.klass == 'BackgroundMigrationWorker' }.
CAUTION: **Warning:**
The following operations can disrupt your GitLab performance.
NOTE: **Note:**
It is safe to re-execute these commands, especially if you have 1000+ pending jobs which would likely overflow your runtime memory.
**For Omnibus installations**
......@@ -186,16 +138,123 @@ pending_job_classes = scheduled_queue.select { |job| job["class"] == "Background
pending_job_classes.each { |job_class| Gitlab::BackgroundMigration.steal(job_class) }
```
## Upgrade paths
Although you can generally upgrade through multiple GitLab versions in one go,
sometimes this can cause issues.
Find where your version sits in the upgrade path below, and upgrade GitLab
accordingly, while also consulting the
[version-specific upgrade instructions](#version-specific-upgrading-instructions):
`8.11.x` -> `8.12.0` -> `8.17.7` -> `9.5.10` -> `10.8.7` -> `11.11.8` -> `12.0.12` -> `12.1.17` -> `12.10.14` -> `13.0.14` -> `13.1.11` - > `13.5.3`
The following table, while not exhaustive, shows some examples of the supported
upgrade paths.
| Target version | Your version | Supported upgrade path | Note |
| --------------------- | ------------ | ------------------------ | ---- |
| `13.4.3` | `12.9.2` | `12.9.2` -> `12.10.14` -> `13.0.14` -> `13.4.3` | Two intermediate versions are required: the final `12.10` release, plus `13.0`. |
| `13.2.10` | `11.5.0` | `11.5.0` -> `11.11.8` -> `12.0.12` -> `12.1.17` -> `12.10.14` -> `13.0.14` -> `13.2.10` | Five intermediate versions are required: the final `11.11`, `12.0`, `12.1` and `12.10` releases, plus `13.0`. |
| `12.10.14` | `11.3.4` | `11.3.4` -> `11.11.8` -> `12.0.12` -> `12.1.17` -> `12.10.14` | Three intermediate versions are required: the final `11.11` and `12.0` releases, plus `12.1` |
| `12.9.5` | `10.4.5` | `10.4.5` -> `10.8.7` -> `11.11.8` -> `12.0.12` -> `12.1.17` -> `12.9.5` | Four intermediate versions are required: `10.8`, `11.11`, `12.0` and `12.1`, then `12.9.5` |
| `12.2.5` | `9.2.6` | `9.2.6` -> `9.5.10` -> `10.8.7` -> `11.11.8` -> `12.0.12` -> `12.1.17` -> `12.2.5` | Five intermediate versions are required: `9.5`, `10.8`, `11.11`, `12.0`, `12.1`, then `12.2`. |
| `11.3.4` | `8.13.4` | `8.13.4` -> `8.17.7` -> `9.5.10` -> `10.8.7` -> `11.3.4` | `8.17.7` is the last version in version 8, `9.5.10` is the last version in version 9, `10.8.7` is the last version in version 10. |
## Upgrading to a new major version
Major versions are reserved for backwards incompatible changes. We recommend that
you first upgrade to the latest available minor version within your major version.
Please follow the [Upgrade Recommendations](../policy/maintenance.md#upgrade-recommendations)
to identify a supported upgrade path.
Upgrading the *major* version requires more attention.
Backward-incompatible changes and migrations are reserved for major versions.
We cannot guarantee that upgrading between major versions will be seamless.
It is suggested to upgrade to the latest available *minor* version within
your major version before proceeding to the next major version.
Doing this will address any backward-incompatible changes or deprecations
to help ensure a successful upgrade to the next major release.
Identify a [supported upgrade path](#upgrade-paths).
More significant migrations may occur during major release upgrades. To ensure these are successful:
Before upgrading to a new major version, you should ensure that any background
migration jobs from previous releases have been completed. To see the current size
of the `background_migration` queue, [check for background migrations before upgrading](#checking-for-background-migrations-before-upgrading).
1. Increment to the first minor version (`x.0.x`) during the major version jump.
1. Proceed with upgrading to a newer release.
It's also important to ensure that any background migrations have been fully completed
before upgrading to a new major version. To see the current size of the `background_migration` queue,
[Check for background migrations before upgrading](#checking-for-background-migrations-before-upgrading).
If your GitLab instance has any runners associated with it, it is very
important to upgrade GitLab Runner to match the GitLab minor version that was
upgraded to. This is to ensure [compatibility with GitLab versions](https://docs.gitlab.com/runner/#compatibility-with-gitlab-versions).
## 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:
- You can only upgrade 1 minor release at a time. So from 9.1 to 9.2, not to
9.3.
- You have to use [post-deployment
migrations](../development/post_deployment_migrations.md) (included in
zero downtime update steps below).
- You are using PostgreSQL. Starting from GitLab 12.1, MySQL is not supported.
- Multi-node GitLab instance. Single-node instances may experience brief interruptions
[as services restart (Puma in particular)](https://docs.gitlab.com/omnibus/update/README.html#single-node-deployment).
Most of the time you can safely upgrade from a patch release to the next minor
release if the patch release is not the latest. For example, upgrading from
9.1.1 to 9.2.0 should be safe even if 9.1.2 has been released. We do recommend
you check the release posts of any releases between your current and target
version just in case they include any migrations that may require you to upgrade
1 release at a time.
Some releases may also include so called "background migrations". These
migrations are performed in the background by Sidekiq and are often used for
migrating data. Background migrations are only added in the monthly releases.
Certain major/minor releases may require a set of background migrations to be
finished. To guarantee this such a release will process any remaining jobs
before continuing the upgrading procedure. While this won't require downtime
(if the above conditions are met) we recommend users to keep at least 1 week
between upgrading major/minor releases, allowing the background migrations to
finish. The time necessary to complete these migrations can be reduced by
increasing the number of Sidekiq workers that can process jobs in the
`background_migration` queue. To see the size of this queue,
[Check for background migrations before upgrading](#checking-for-background-migrations-before-upgrading).
As a rule of thumb, any database smaller than 10 GB won't take too much time to
upgrade; perhaps an hour at most per minor release. Larger databases however may
require more time, but this is highly dependent on the size of the database and
the migrations that are being performed.
### Examples
To help explain this, let's look at some examples.
**Example 1:** You are running a large GitLab installation using version 9.4.2,
which is the latest patch release of 9.4. When GitLab 9.5.0 is released this
installation can be safely upgraded to 9.5.0 without requiring downtime if the
requirements mentioned above are met. You can also skip 9.5.0 and upgrade to
9.5.1 after it's released, but you **can not** upgrade straight to 9.6.0; you
_have_ to first upgrade to a 9.5.x release.
**Example 2:** You are running a large GitLab installation using version 9.4.2,
which is the latest patch release of 9.4. GitLab 9.5 includes some background
migrations, and 10.0 will require these to be completed (processing any
remaining jobs for you). Skipping 9.5 is not possible without downtime, and due
to the background migrations would require potentially hours of downtime
depending on how long it takes for the background migrations to complete. To
work around this you will have to upgrade to 9.5.x first, then wait at least a
week before upgrading to 10.0.
**Example 3:** You use MySQL as the database for GitLab. Any upgrade to a new
major/minor release will require downtime. If a release includes any background
migrations this could potentially lead to hours of downtime, depending on the
size of your database. To work around this you will have to use PostgreSQL and
meet the other online upgrade requirements mentioned above.
### Steps
Steps to [upgrade without downtime](https://docs.gitlab.com/omnibus/update/README.html#zero-downtime-updates).
## Upgrading between editions
......@@ -203,7 +262,7 @@ GitLab comes in two flavors: [Community Edition](https://about.gitlab.com/featur
and [Enterprise Edition](https://about.gitlab.com/features/#enterprise) which builds on top of the Community Edition and
includes extra features mainly aimed at organizations with more than 100 users.
Below you can find some guides to help you change editions easily.
Below you can find some guides to help you change GitLab editions.
### Community to Enterprise Edition
......@@ -226,7 +285,30 @@ If you need to downgrade your Enterprise Edition installation back to Community
Edition, you can follow [this guide](../downgrade_ee_to_ce/README.md) to make the process as smooth as
possible.
## Version specific upgrading instructions
## Version-specific upgrading instructions
Each month, a major or minor release of GitLab is published along with a
[release post](https://about.gitlab.com/releases/categories/releases/).
You should check all the major and minor versions you're passing over.
At the end of those release posts, there are three sections to look for:
- Deprecations
- Removals
- Important notes on upgrading
These will include:
- Steps you need to perform as part of an upgrade.
For example [8.12](https://about.gitlab.com/releases/2016/09/22/gitlab-8-12-released/#upgrade-barometer)
required the Elasticsearch index to be recreated. Any older version of GitLab upgrading to 8.12 or higher would require this.
- Changes to the versions of software we support such as
[ceasing support for IE11 in GitLab 13](https://about.gitlab.com/releases/2020/03/22/gitlab-12-9-released/#ending-support-for-internet-explorer-11).
Apart from the instructions in this section, you should also check the
installation-specific upgrade instructions, based on how you installed GitLab:
- [Linux packages (Omnibus GitLab)](https://docs.gitlab.com/omnibus/update/README.html#version-specific-changes)
- [Helm charts](https://docs.gitlab.com/charts/installation/upgrade.html)
### 13.6.0
......@@ -293,10 +375,16 @@ 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.
### 12.1.0
If you are planning to upgrade from `12.0.x` to `12.10.x`, it is necessary to
perform an intermediary upgrade to `12.1.x` before upgrading to `12.10.x` to
avoid issues like [#215141](https://gitlab.com/gitlab-org/gitlab/-/issues/215141).
### 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 first upgrade to the latest 11.11 patch release. After upgraded to 11.11.x,
users can upgrade to 12.0.x. Failure to do so may result in database migrations
not being applied, which could lead to application errors.
......@@ -308,11 +396,17 @@ release for 11.11.x. You can upgrade as usual to 12.0.x.
Example 2: you are currently using a version of GitLab 10.x. To upgrade, first
upgrade to the last 10.x release (10.8.7) then the last 11.x release (11.11.8).
Once upgraded to 11.11.8 you can safely upgrade to 12.0.x.
After upgraded to 11.11.8 you can safely upgrade to 12.0.x.
See our [documentation on upgrade paths](../policy/maintenance.md#upgrade-recommendations)
for more information.
### Upgrades from versions earlier than 8.12
- `8.11.x` and earlier: you might have to upgrade to `8.12.0` specifically before you can upgrade to `8.17.7`. This was [reported in an issue](https://gitlab.com/gitlab-org/gitlab/-/issues/207259).
- [CI changes prior to version 8.0](https://docs.gitlab.com/omnibus/update/README.html#updating-gitlab-ci-from-prior-540-to-version-714-via-omnibus-gitlab)
when it was merged into GitLab.
## Miscellaneous
- [MySQL to PostgreSQL](mysql_to_postgresql.md) guides you through migrating
......
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