BARMAN-CLOUD-WAL-RESTORE(1)

NAME
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 ]
                    [ --addressing-style { auto | virtual | path } ]
                    [ { -P | --aws-profile } AWS_PROFILE ]
                    [ --profile AWS_PROFILE ]
                    [ --read-timeout READ_TIMEOUT ]
                    [ { --azure-credential | --credential } { azure-cli | managed-identity
                      | default } ]
                    [ --no-partial ]
                    SOURCE_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.

SOURCE_URL
    URL of the cloud source, 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.

--addressing-style
    The addressing style to use for S3 requests. This is useful when connecting to S3-compatible services that require a specific addressing style.

    Allowed options are:

•   auto (default): Uses the addressing style determined by the underlying library.

•   virtual: Uses virtual-hosted style addressing (e.g., bucket-name.s3.amazonaws.com).

•   path: Uses path-style addressing (e.g., s3.amazonaws.com/bucket-name).

-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.

•   default.

AUTHOR
EnterpriseDB

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