barman-cloud-wal-restore - Man Page

barman-cloud-wal-restore — Barman-cloud Commands

Synopsis

barman-cloud-wal-restore
                [ { -V | --version } ]
                [ --help ]
                [ { -v | --verbose } ]
                [ { -q | --quiet } ]
                [ { -t | --test } ]
                [ --cloud-provider { aws-s3 | azure-blob-storage | google-cloud-storage } ]
                [ --endpoint-url ENDPOINT_URL ]
                [ { -P | --aws-profile } AWS_PROFILE ]
                [ --read-timeout READ_TIMEOUT ]
                [ --azure-credential { azure-cli | managed-identity } ]
                [ --no-partial ]
                DESTINATION_URL SERVER_NAME WAL_NAME WAL_DEST

Description

The barman-cloud-wal-restore script functions as the restore_command for retrieving WAL files from cloud storage and placing them directly into a Postgres standby server, bypassing the Barman server.

This script is used to download WAL files that were previously archived with the barman-cloud-wal-archive command. Disable automatic download of .partial files by calling --no-partial option.

IMPORTANT:

On the target Postgres node, when pg_wal and the spool directory are on the same filesystem, files are moved via renaming, which is faster than copying and deleting. This speeds up serving WAL files significantly. If the directories are on different filesystems, the process still involves copying and deleting, so there's no performance gain in that case.

NOTE:

For GCP, only authentication with GOOGLE_APPLICATION_CREDENTIALS env is supported.

Parameters

SERVER_NAME

Name of the server that will have WALs restored.

DESTINATION_URL

URL of the cloud destination, such as a bucket in AWS S3. For example: s3://bucket/path/to/folder.

WAL_NAME

The value of the '%f' keyword (according to restore_command).

WAL_DEST

The value of the '%p' keyword (according to restore_command).

-V / --version

Show version and exit.

--help

show this help message and exit.

-v / --verbose

Increase output verbosity (e.g., -vv is more than -v).

-q / --quiet

Decrease output verbosity (e.g., -qq is less than -q).

-t / --test

Test cloud connectivity and exit.

--cloud-provider

The cloud provider to use as a storage backend.

Allowed options are:

• aws-s3.
• azure-blob-storage.
• google-cloud-storage.

--no-partial

Do not download partial WAL files

Extra options for the AWS cloud provider

--endpoint-url

Override default S3 endpoint URL with the given one.

-P / --aws-profile

Profile name (e.g. INI section in AWS credentials file).

--profile (deprecated)

Profile name (e.g. INI section in AWS credentials file) — replaced by --aws-profile.

--read-timeout

The time in seconds until a timeout is raised when waiting to read from a connection (defaults to 60 seconds).

Extra options for the Azure cloud provider

--azure-credential / --credential

Optionally specify the type of credential to use when authenticating with Azure. If omitted then Azure Blob Storage credentials will be obtained from the environment and the default Azure authentication flow will be used for authenticating with all other Azure services. If no credentials can be found in the environment then the default Azure authentication flow will also be used for Azure Blob Storage.

Allowed options are:

• azure-cli.
• managed-identity.

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