BARMAN(1) Barman User manuals | Version 1.5.0

NAME

barman - Backup and Recovery Manager for PostgreSQL

SYNOPSIS

barman [OPTIONS] COMMAND

DESCRIPTION

barman is an administration tool for disaster recovery of PostgreSQL servers written in Python. barman can perform remote backups of multiple servers in business critical environments and helps DBAs during the recovery phase.

OPTIONS

-v, –version

Show program version number and exit.

-q, –quiet

Do not output anything. Useful for cron scripts.

-h, –help

Show a help message and exit.

-c CONFIG, –config CONFIG

Use the specified configuration file.

COMMANDS

Important: every command has a help option

cron

Perform maintenance tasks, such as moving incoming WAL files to the appropriate directory.

list-server

Show all the configured servers, and their descriptions.

show-server SERVER_NAME

Show information about SERVER_NAME, including: conninfo, backup_directory, wals_directory and many more. Specify all as SERVER_NAME to show information about all the configured servers.

status SERVER_NAME

Show information about the status of a server, including: number of available backups, archive_command, archive_status and many more. For example:

Server quagmire:
  Description: The Giggity database
  Passive node: False
  PostgreSQL version: 9.3.9
  pgespresso extension: Not available
  PostgreSQL Data directory: /srv/postgresql/9.3/data
  PostgreSQL 'archive_command' setting: rsync -a %p barman@backup:/var/lib/barman/quagmire/incoming
  Last archived WAL: 0000000100003103000000AD
  Current WAL segment: 0000000100003103000000AE
  Retention policies: enforced (mode: auto, retention: REDUNDANCY 2, WAL retention: MAIN)
  No. of available backups: 2
  First available backup: 20150908T003001
  Last available backup: 20150909T003001
  Minimum redundancy requirements: satisfied (2/1)
check SERVER_NAME

Show diagnostic information about SERVER_NAME, including: ssh connection check, PostgreSQL version, configuration and backup directories. Specify all as SERVER_NAME to show diagnostic information about all the configured servers.

–nagios
Nagios plugin compatible output
diagnose

Collect diagnostic information about the server where barman is installed and all the configured servers, including: global configuration, SSH version, Python version, rsync version, as well as current configuration and status of all servers.

backup SERVER_NAME

Perform a backup of SERVER_NAME using parameters specified in the configuration file. Specify all as SERVER_NAME to perform a backup of all the configured servers.

–immediate-checkpoint

forces the initial checkpoint to be done as quickly as possible. Overrides value of the parameter immediate_checkpoint, if present in the configuration file.

–no-immediate-checkpoint

forces to wait for the checkpoint. Overrides value of the parameter immediate_checkpoint, if present in the configuration file.

–reuse-backup [INCREMENTAL_TYPE]

Overrides reuse_backup option behaviour. Possible values for INCREMENTAL_TYPE are:

  • off: do not reuse the last available backup;
  • copy: reuse the last available backup for a server and create a copy of the unchanged files (reduce backup time);
  • link: reuse the last available backup for a server and create a hard link of the unchanged files (reduce backup time and space);

link is the default target if --reuse-backup is used and INCREMENTAL_TYPE is not explicited.

–retry-times

Number of retries of base backup copy, after an error. Used during both backup and recovery operations. Overrides value of the parameter basebackup_retry_times, if present in the configuration file.

–no-retry

Same as --retry-times 0

–retry-sleep

Number of seconds of wait after a failed copy, before retrying. Used during both backup and recovery operations. Overrides value of the parameter basebackup_retry_sleep, if present in the configuration file.

list-backup SERVER_NAME

Show available backups for SERVER_NAME. This command is useful to retrieve a backup ID. For example:

servername 20111104T102647 - Fri Nov  4 10:26:48 2011 - Size: 17.0 MiB - WAL Size: 100 B
In this case, *20111104T102647* is the backup ID.
show-backup SERVER_NAME BACKUP_ID
Show detailed information about a particular backup, identified by the server name and the backup ID. See the Backup ID shortcuts section below for available shortcuts. For example: 
Backup 20150828T130001:
  Server Name            : quagmire
  Status                 : DONE
  PostgreSQL Version     : 90402
  PGDATA directory       : /srv/postgresql/9.4/main/data

  Base backup information:
    Disk usage           : 12.4 TiB (12.4 TiB with WALs)
    Incremental size     : 4.9 TiB (-60.02%)
    Timeline             : 1
    Begin WAL            : 0000000100000CFD000000AD
    End WAL              : 0000000100000D0D00000008
    WAL number           : 3932
    WAL compression ratio: 79.51%
    Begin time           : 2015-08-28 13:00:01.633925+00:00
    End time             : 2015-08-29 10:27:06.522846+00:00
    Begin Offset         : 1575048
    End Offset           : 13853016
    Begin XLOG           : CFD/AD180888
    End XLOG             : D0D/8D36158

  WAL information:
    No of files          : 35039
    Disk usage           : 121.5 GiB
    WAL rate             : 275.50/hour
    Compression ratio    : 77.81%
    Last available       : 0000000100000D95000000E7

  Catalog information:
    Retention Policy     : not enforced
    Previous Backup      : 20150821T130001
    Next Backup          : - (this is the latest base backup)
list-files [OPTIONS] SERVER_NAME BACKUP_ID

List all the files in a particular backup, identified by the server name and the backup ID. See the Backup ID shortcuts section below for available shortcuts.

–target TARGET_TYPE

Possible values for TARGET_TYPE are:

  • data: lists just the data files;
  • standalone: lists the base backup files, including required WAL files;
  • wal: lists all the WAL files between the start of the base backup and the end of the log / the start of the following base backup (depending on whether the specified base backup is the most recent one available);
  • full: same as data + wal.

The default value is standalone.

rebuild-xlogdb SERVER_NAME

Perform a rebuild of the WAL file metadata for SERVER_NAME (or every server, using the all shortcut) guessing it from the disk content. The metadata of the WAL archive is contained in the xlog.db file, and every Barman server has its own copy.

recover [OPTIONS] SERVER_NAME BACKUP_ID DESTINATION_DIRECTORY

Recover a backup in a given directory (local or remote, depending on the --remote-ssh-command option settings). See the Backup ID shortcuts section below for available shortcuts.

–target-tli TARGET_TLI

Recover the specified timeline.

–target-time TARGET_TIME

Recover to the specified time.

You can use any valid unambiguous representation (e.g: “YYYY-MM-DD HH:MM:SS.mmm”).

–target-xid TARGET_XID

Recover to the specified transaction ID.

–target-name TARGET_NAME

Recover to the named restore point previously created with the pg_create_restore_point(name) (for PostgreSQL 9.1 and above users).

–exclusive

Set target xid to be non inclusive.

–tablespace NAME:LOCATION

Specify tablespace relocation rule.

–remote-ssh-command SSH_COMMAND

This options activates remote recovery, by specifying the secure shell command to be launched on a remote host. This is the equivalent of the “ssh_command” server option in the configuration file for remote recovery. Example: ‘ssh postgres@db2’.

–retry-times

Number of retries of data copy during base backup after an error. Overrides value of the parameter basebackup_retry_times, if present in the configuration file.

–no-retry

Same as --retry-times 0

–retry-sleep

Number of seconds of wait after a failed copy, before retrying. Overrides value of the parameter basebackup_retry_sleep, if present in the configuration file.

get-wal [OPTIONS] SERVER_NAME WAL_ID

Retrieve a WAL file from the xlog archive of a given server. By default, the requested WAL file, if found, is returned as uncompressed content to STDOUT. The following options allow users to change this behaviour:

-o OUTPUT_DIRECTORY

destination directory where the get-wal will deposit the requested WAL

-j

output will be compressed using gzip

-x

output will be compressed using bzip2

delete SERVER_NAME BACKUP_ID

Delete the specified backup. Backup ID shortcuts section below for available shortcuts.

BACKUP ID SHORTCUTS

Rather than using the timestamp backup ID, you can use any of the following shortcuts/aliases to identity a backup for a given server:

first

Oldest available backup for that server, in chronological order.

last

Latest available backup for that server, in chronological order.

latest

same ast last.

oldest

same ast first.

EXIT STATUS

0

Success

Not zero

Failure

SEE ALSO

barman (5).

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 Sourceforge bug tracker. Along the bug submission, users can provide developers with diagnostics information obtained through the barman diagnose command.

AUTHORS

In alphabetical order:

  • Gabriele Bartolini (project leader)
  • Stefano Bianucci (developer)
  • Giuseppe Broccolo (QA/testing)
  • Giulio Calacoci (developer)
  • Francesco Canovai (QA/testing)
  • Gianni Ciolli (QA/testing)
  • Marco Nenciarini (lead developer)

Past contributors:

  • Carlo Ascani

RESOURCES

COPYING

Barman is the exclusive property of 2ndQuadrant Italia and its code is distributed under GNU General Public License v3.

Copyright (C) 2011-2015 2ndQuadrant Italia Srl - http://www.2ndQuadrant.it/.