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fix: rephrase the Postgres PGDATA documentation and add a warning (#2340) 

Signed-off-by: Matthias Riegler <matthias.riegler@ankorstore.com>
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Matthias Riegler 2023-06-26 20:34:36 +02:00 committed by GitHub
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@ -96,7 +96,9 @@ See the PostgreSQL documentation on [`pg_hba.conf`](https://www.postgresql.org/d
### `PGDATA`
This optional variable can be used to define another location - like a subdirectory - for the database files. The default is `/var/lib/postgresql/data`. If the data volume you're using is a filesystem mountpoint (like with GCE persistent disks) or remote folder that cannot be chowned to the `postgres` user (like some NFS mounts), Postgres `initdb` recommends a subdirectory be created to contain the data.
> **Important Note:** when mounting a volume to `/var/lib/posgresql`, the `/var/lib/postgresql/data` path is a local volume from the container runtime, thus data is not persisted on the mounted volume.
This optional variable can be used to define another location - like a subdirectory - for the database files. The default is `/var/lib/postgresql/data`. If the data volume you're using is a filesystem mountpoint (like with GCE persistent disks), or remote folder that cannot be chowned to the `postgres` user (like some NFS mounts), or contains folders/files (e.g. `lost+found`), Postgres `initdb` requires a subdirectory to be created within the mountpoint to contain the data.
For example: