How to backup and restore a server in Azure Database for PostgreSQL - Single Server using the Azure portal

Článek
06/24/2022

APPLIES TO: Azure Database for PostgreSQL - Single Server

Important

Azure Database for PostgreSQL - Single Server is on the retirement path. We strongly recommend that you upgrade to Azure Database for PostgreSQL - Flexible Server. For more information about migrating to Azure Database for PostgreSQL - Flexible Server, see What's happening to Azure Database for PostgreSQL Single Server?.

Backup happens automatically

Azure Database for PostgreSQL servers are backed up periodically to enable Restore features. Using this feature you may restore the server and all its databases to an earlier point-in-time, on a new server.

Set backup configuration

You make the choice between configuring your server for either locally redundant backups or geographically redundant backups at server creation, in the Pricing Tier window.

Note

After a server is created, the kind of redundancy it has, geographically redundant vs locally redundant, can't be switched.

While creating a server through the Azure portal, the Pricing Tier window is where you select either Locally Redundant or Geographically Redundant backups for your server. This window is also where you select the Backup Retention Period - how long (in number of days) you want the server backups stored for.

For more information about setting these values during create, see the Azure Database for PostgreSQL server quickstart.

The backup retention period of a server can be changed through the following steps:

Sign in to the Azure portal.
Select your Azure Database for PostgreSQL server. This action opens the Overview page.
Select Pricing Tier from the menu, under SETTINGS. Using the slider you can change the Backup Retention Period to your preference between 7 and 35 days.
Select OK to confirm the change.

The backup retention period governs how far back in time a point-in-time restore can be retrieved, since it's based on backups available. Point-in-time restore is described further in the following section.

Point-in-time restore

Azure Database for PostgreSQL allows you to restore the server back to a point-in-time and into to a new copy of the server. You can use this new server to recover your data, or have your client applications point to this new server.

For example, if a table was accidentally dropped at noon today, you could restore to the time just before noon and retrieve the missing table and data from that new copy of the server. Point-in-time restore is at the server level, not at the database level.

The following steps restore the sample server to a point-in-time:

In the Azure portal, select your Azure Database for PostgreSQL server.
In the toolbar of the server's Overview page, select Restore.
Fill out the Restore form with the required information:
- Restore point: Select the point-in-time you want to restore to.
- Target server: Provide a name for the new server.
- Location: You cannot select the region. By default it is same as the source server.
- Pricing tier: You cannot change these parameters when doing a point-in-time restore. It is same as the source server.
Select OK to restore the server to restore to a point-in-time.
Once the restore finishes, locate the new server that is created to verify the data was restored as expected.

The new server created by point-in-time restore has the same server admin login name and password that was valid for the existing server at the point-in-time chose. You can change the password from the new server's Overview page.

The new server created during a restore does not have the firewall rules or VNet service endpoints that existed on the original server. These rules need to be set up separately for this new server.

If your source PostgreSQL server is encrypted with customer-managed keys, please see the documentation for additional considerations.

Geo restore

If you configured your server for geographically redundant backups, a new server can be created from the backup of that existing server. This new server can be created in any region that Azure Database for PostgreSQL is available.

Select the Create a resource button (+) in the upper-left corner of the portal. Select Databases > Azure Database for PostgreSQL.
Select the Single server deployment option.
Provide the subscription, resource group, and name of the new server.
Select Backup as the Data source. This action loads a dropdown that provides a list of servers that have geo redundant backups enabled.

Note

When a server is first created it may not be immediately available for geo restore. It may take a few hours for the necessary metadata to be populated.
Select the Backup dropdown.
Select the source server to restore from.
The server will default to values for number of vCores, Backup Retention Period, Backup Redundancy Option, Engine version, and Admin credentials. Select Continue.
Fill out the rest of the form with your preferences. You can select any Location.

After selecting the location, you can select Configure server to update the Compute Generation (if available in the region you have chosen), number of vCores, Backup Retention Period, and Backup Redundancy Option. Changing Pricing Tier (Basic, General Purpose, or Memory Optimized) or Storage size during restore is not supported.
Select Review + create to review your selections.
Select Create to provision the server. This operation may take a few minutes.

The new server created by geo restore has the same server admin login name and password that was valid for the existing server at the time the restore was initiated. The password can be changed from the new server's Overview page.