barman-cloud-wal-restore(1)

cloud-wal-restore - Restore PostgreSQL WAL files from the

Section 1 barman-cli-cloud bookworm source

Description

BARMAN-CLOUD-WAL-RESTORE

NAME

barman-cloud-wal-restore - Restore PostgreSQL WAL files from the Cloud using restore_command

SYNOPSIS

barman-cloud-wal-restore [OPTIONS] SOURCE_URL SERVER_NAME WAL_NAME WAL_PATH

DESCRIPTION

This script can be used as a restore_command to download WAL files previously archived with barman-cloud-wal-archive command. Currently AWS S3, Azure Blob Storage and Google Cloud Storage are supported.

This script and Barman are administration tools for disaster recovery of PostgreSQL servers written in Python and maintained by EnterpriseDB.

Usage

usage: barman-cloud-wal-restore [-V] [--help] [-v | -q] [-t]
[--cloud-provider {aws-s3,azure-blob-storage,google-cloud-storage}]
[--endpoint-url ENDPOINT_URL] [-P PROFILE]
[--read-timeout READ_TIMEOUT]
[--credential {azure-cli,managed-identity}]
source_url server_name wal_name wal_dest

This script can be used as a ‘restore_command‘ to download WAL files
previously archived with barman-cloud-wal-archive command. Currently AWS S3,
Azure Blob Storage and Google Cloud Storage are supported.

positional arguments:
source_url            URL of the cloud source, such as a bucket in AWS S3.
For example: ‘s3://bucket/path/to/folder‘.
server_name           the name of the server as configured in Barman.
wal_name              The value of the '%f' keyword (according to
'restore_command').
wal_dest              The value of the '%p' keyword (according to
'restore_command').

optional arguments:
-V, --version         show program's version number 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 {aws-s3,azure-blob-storage,google-cloud-storage}
The cloud provider to use as a storage backend

Extra options for the aws-s3 cloud provider:
--endpoint-url ENDPOINT_URL
Override default S3 endpoint URL with the given one
-P PROFILE, --profile PROFILE
profile name (e.g. INI section in AWS credentials
file)
--read-timeout 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-blob-storage cloud provider:
--credential {azure-cli,managed-identity}
Optionally specify the type of credential to use when
authenticating with Azure Blob Storage. If omitted
then the credential will be obtained from the
environment. If no credentials can be found in the
environment then the default Azure authentication flow
will be used

REFERENCES

For Boto:

•

https://boto3.amazonaws.com/v1/documentation/api/latest/guide/configuration.html

For AWS:

	•		https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-set-up.html
	•		https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html.

For Azure Blob Storage:

	•		https://docs.microsoft.com/en-us/azure/storage/blobs/authorize-data-operations-cli#set-environment-variables-for-authorization-parameters
	•		https://docs.microsoft.com/en-us/python/api/azure-storage-blob/?view=azure-python

For Google Cloud Storage: * Credentials: https://cloud.google.com/docs/authentication/getting-started#setting_the_environment_variable

Only authentication with GOOGLE_APPLICATION_CREDENTIALS env is supported at the moment.

DEPENDENCIES

If using --cloud-provider=aws-s3:

•

boto3

If using --cloud-provider=azure-blob-storage:

	•		azure-storage-blob
	•		azure-identity (optional, if you wish to use DefaultAzureCredential)

If using --cloud-provider=google-cloud-storage * google-cloud-storage

EXIT STATUS

	0		Success
	1		The requested WAL could not be found
	2		The connection to the cloud provider failed
	3		There was an error in the command input

Other non-zero codes

Failure

BUGS

Barman has been extensively tested, and is currently being used in several production environments. However, we cannot exclude the presence of bugs.

Any bug can be reported via the GitHub issue tracker.

RESOURCES

	•		Homepage: <https://www.pgbarman.org/>
	•		Documentation: <https://docs.pgbarman.org/>
	•		Professional support: <https://www.enterprisedb.com/>

COPYING

Barman is the property of EnterpriseDB UK Limited and its code is distributed under GNU General Public License v3.

AUTHORS

EnterpriseDB <https://www.enterprisedb.com>.