106 lines
4.3 KiB
Markdown
106 lines
4.3 KiB
Markdown
---
|
|
stage: none
|
|
group: unassigned
|
|
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
|
|
---
|
|
|
|
# Managing PostgreSQL extensions **(FREE SELF)**
|
|
|
|
This guide documents how to manage PostgreSQL extensions for installations with an external
|
|
PostgreSQL database.
|
|
|
|
You must load the following extensions into the main GitLab database (defaults to `gitlabhq_production`):
|
|
|
|
| Extension | Minimum GitLab version |
|
|
|--------------|------------------------|
|
|
| `pg_trgm` | 8.6 |
|
|
| `btree_gist` | 13.1 |
|
|
| `plpgsql` | 11.7 |
|
|
|
|
If you are using [GitLab Geo](https://about.gitlab.com/solutions/geo/), you must load the following
|
|
extensions into all secondary tracking databases (defaults to `gitlabhq_geo_production`):
|
|
|
|
| Extension | Minimum GitLab version |
|
|
|--------------|------------------------|
|
|
| `plpgsql` | 9.0 |
|
|
|
|
In order to install extensions, PostgreSQL requires the user to have superuser privileges.
|
|
Typically, the GitLab database user is not a superuser. Therefore, regular database migrations
|
|
cannot be used in installing extensions and instead, extensions have to be installed manually
|
|
prior to upgrading GitLab to a newer version.
|
|
|
|
## Installing PostgreSQL extensions manually
|
|
|
|
In order to install a PostgreSQL extension, this procedure should be followed:
|
|
|
|
1. Connect to the GitLab PostgreSQL database using a superuser, for example:
|
|
|
|
```shell
|
|
sudo gitlab-psql -d gitlabhq_production
|
|
```
|
|
|
|
1. Install the extension (`btree_gist` in this example) using [`CREATE EXTENSION`](https://www.postgresql.org/docs/11/sql-createextension.html):
|
|
|
|
```sql
|
|
CREATE EXTENSION IF NOT EXISTS btree_gist
|
|
```
|
|
|
|
1. Verify installed extensions:
|
|
|
|
```shell
|
|
gitlabhq_production=# \dx
|
|
List of installed extensions
|
|
Name | Version | Schema | Description
|
|
------------+---------+------------+-------------------------------------------------------------------
|
|
btree_gist | 1.5 | public | support for indexing common datatypes in GiST
|
|
pg_trgm | 1.4 | public | text similarity measurement and index searching based on trigrams
|
|
plpgsql | 1.0 | pg_catalog | PL/pgSQL procedural language
|
|
(3 rows)
|
|
```
|
|
|
|
On some systems you may need to install an additional package (for example,
|
|
`postgresql-contrib`) for certain extensions to become available.
|
|
|
|
## Typical failure scenarios
|
|
|
|
The following is an example of a new GitLab installation failing because the extension hasn't been
|
|
installed first.
|
|
|
|
```shell
|
|
---- Begin output of "bash" "/tmp/chef-script20210513-52940-d9b1gs" ----
|
|
STDOUT: psql:/opt/gitlab/embedded/service/gitlab-rails/db/structure.sql:9: ERROR: permission denied to create extension "btree_gist"
|
|
HINT: Must be superuser to create this extension.
|
|
rake aborted!
|
|
failed to execute:
|
|
psql -v ON_ERROR_STOP=1 -q -X -f /opt/gitlab/embedded/service/gitlab-rails/db/structure.sql --single-transaction gitlabhq_production
|
|
```
|
|
|
|
The following is an example of a situation when the extension hasn't been installed before running migrations.
|
|
In this scenario, the database migration fails to create the extension `btree_gist` because of insufficient
|
|
privileges.
|
|
|
|
```shell
|
|
== 20200515152649 EnableBtreeGistExtension: migrating =========================
|
|
-- execute("CREATE EXTENSION IF NOT EXISTS btree_gist")
|
|
|
|
GitLab requires the PostgreSQL extension 'btree_gist' installed in database 'gitlabhq_production', but
|
|
the database user is not allowed to install the extension.
|
|
|
|
You can either install the extension manually using a database superuser:
|
|
|
|
CREATE EXTENSION IF NOT EXISTS btree_gist
|
|
|
|
Or, you can solve this by logging in to the GitLab database (gitlabhq_production) using a superuser and running:
|
|
|
|
ALTER regular WITH SUPERUSER
|
|
|
|
This query will grant the user superuser permissions, ensuring any database extensions
|
|
can be installed through migrations.
|
|
```
|
|
|
|
To recover from failed migrations, the extension must be installed manually by a superuser, and the
|
|
GitLab upgrade completed by [re-running the database migrations](../administration/raketasks/maintenance.md#run-incomplete-database-migrations):
|
|
|
|
```shell
|
|
sudo gitlab-rake db:migrate
|
|
```
|