I installed barman 1.4.0-alpha.1, thank you for that suggestion. I attempted another backup using this latest barman version and got the same password error, but note that barman was able to archive WAL files:
barman@myserver:~#> barman diagnose
{
"global": {
"config": {
"barman_home": "/mnt/zfs/backup/barman",
"barman_user": "barman",
"log_file": "/var/log/barman/barman.log"
},
"system_info": {
"barman_ver": "1.4.0-alpha.1",
"kernel_ver": "Linux myserver 2.6.32-358.23.2.el6.x86_64 #1 SMP Sat Sep 14 05:32:37 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux",
"python_ver": "Python 2.6.6",
"release": "LSB Version:\t:base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch\nDistributor ID:\tRedHatEnterpriseServer\nDescription:\tRed Hat Enterprise Linux Server release 6.4 (Santiago)\nRelease:\t6.4\nCodename:\tSantiago",
"rsync_ver": "rsync version 3.0.6 protocol version 30",
"ssh_ver": "OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010"
}
},
"servers": {
"myserver": {
"backups": {
"20150120T164533": {
"backup_id": "20150120T164533",
"backup_label": "None",
"begin_offset": null,
"begin_time": null,
"begin_wal": null,
"begin_xlog": null,
"config_file": null,
"deduplicated_size": null,
"end_offset": null,
"end_time": null,
"end_wal": null,
"end_xlog": null,
"error": "failure detecting data directory (fe_sendauth: no password supplied)",
"hba_file": null,
"ident_file": null,
"mode": "default",
"pgdata": null,
"server_name": "myserver",
"size": null,
"status": "FAILED",
"tablespaces": null,
"timeline": null,
"version": null
},
"20150120T165559": {
"backup_id": "20150120T165559",
"backup_label": "None",
"begin_offset": null,
"begin_time": null,
"begin_wal": null,
"begin_xlog": null,
"config_file": null,
"deduplicated_size": null,
"end_offset": null,
"end_time": null,
"end_wal": null,
"end_xlog": null,
"error": "failure detecting data directory (fe_sendauth: no password supplied)",
"hba_file": null,
"ident_file": null,
"mode": "default",
"pgdata": null,
"server_name": "myserver",
"size": null,
"status": "FAILED",
"tablespaces": null,
"timeline": null,
"version": null
},
"20150121T114552": {
"backup_id": "20150121T114552",
"backup_label": "None",
"begin_offset": null,
"begin_time": null,
"begin_wal": null,
"begin_xlog": null,
"config_file": null,
"deduplicated_size": null,
"end_offset": null,
"end_time": null,
"end_wal": null,
"end_xlog": null,
"error": "failure issuing start backup command (Cannot connect to postgres: fe_sendauth: no password supplied)",
"hba_file": null,
"ident_file": null,
"mode": "default",
"pgdata": null,
"server_name": "myserver",
"size": null,
"status": "FAILED",
"tablespaces": null,
"timeline": null,
"version": null
}
},
"config": {
"active": true,
"backup_directory": "/mnt/zfs/backup/barman/myserver",
"backup_options": "exclusive_backup",
"bandwidth_limit": null,
"barman_home": "/mnt/zfs/backup/barman",
"basebackup_retry_sleep": 30,
"basebackup_retry_times": 0,
"basebackups_directory": "/mnt/zfs/backup/barman/myserver/base",
"compression": null,
"conninfo": "host=myserver port=5432 user=postgres",
"custom_compression_filter": null,
"custom_decompression_filter": null,
"description": "PostgreSQL Database",
"immediate_checkpoint": false,
"incoming_wals_directory": "/mnt/zfs/backup/barman/myserver/incoming",
"last_backup_maximum_age": null,
"lock_file": "/mnt/zfs/backup/barman/myserver/myserver.lock",
"minimum_redundancy": 2,
"name": "myserver",
"network_compression": false,
"post_archive_script": null,
"post_backup_script": null,
"pre_archive_script": null,
"pre_backup_script": null,
"retention_policy": "window 4 w",
"retention_policy_mode": "auto",
"reuse_backup": null,
"ssh_command": "ssh postgres@myserver",
"tablespace_bandwidth_limit": null,
"wal_retention_policy": "simple-wal 4 w",
"wals_directory": "/mnt/zfs/backup/barman/myserver/wals"
},
"status": {
"archive_command": null,
"archive_mode": null,
"current_xlog": null,
"data_directory": null,
"pgespremnt_installed": null,
"server_txt_version": null
},
"system_info": {
"kernel_ver": "Linux myserver 2.6.32-358.23.2.el6.x86_64 #1 SMP Sat Sep 14 05:32:37 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux",
"python_ver": "Python 2.6.6",
"release": "LSB Version:\t:base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch\nDistributor ID:\tRedHatEnterpriseServer\nDescription:\tRed Hat Enterprise Linux Server release 6.4 (Santiago)\nRelease:\t6.4\nCodename:\tSantiago",
"rsync_ver": "rsync version 3.0.6 protocol version 30",
"ssh_ver": "OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010"
}
}
}
}