如何解决Barman地理冗余配置错误
我试图在男服务员设置上配置地理冗余，但是当我尝试从主备份复制到辅助备份时出现错误，我的配置是：
服务器1
- Ubuntu 18在Virtual Box上
- Postgres 12
- 192.168.0.103
- /etc/barman.conf
backup_method = rsync
archiver = on
compression = gzip
reuse_backup = link
backup_options = concurrent_backup
parallel_jobs = 2
network_compression = true
basebackup_retry_times = 20
basebackup_retry_sleep = 120
- /etc/barman.d/comauto_20200921_95
[comauto_20200921_95]
description = "Comauto Local Postgres 9.5 - 21/09/2020"
conninfo = host=192.168.0.102 user=barman dbname=postgres
ssh_command = ssh postgres@192.168.0.102
retention_policy = RECOVERY WINDOW OF 2 WEEKS
backup_options = exclusive_backup
服务器2
backup_method = rsync
archiver = on
compression = gzip
reuse_backup = link
backup_options = concurrent_backup
parallel_jobs = 2
network_compression = true
basebackup_retry_times = 20
basebackup_retry_sleep = 120
; the only difference
primary_ssh_command = barman@192.168.0.103
- /etc/barman.d/comauto_20200921_95
[comauto_20200921_95]
description = "Comauto Local Postgres 9.5 - 21/09/2020"
conninfo = host=192.168.0.102 user=barman dbname=postgres
ssh_command = ssh postgres@192.168.0.102
retention_policy = RECOVERY WINDOW OF 2 WEEKS
backup_options = exclusive_backup
在服务器1上：
sudo su barman
ssh barman@192.168.0.102 -C true
# OK
barman check comauto_20200921_95
# All OK
barman backup comauto_20200921_95
# OK
barman list-backup comauto_20200921_95
# comauto_20200921_95 20201111T172643 - Wed Nov 11 17:26:50 2020 - Size: 6.2 GiB - WAL Size: 0 B
# comauto_20200921_95 20201111T114656 - Wed Nov 11 11:47:08 2020 - Size: 6.2 GiB - WAL Size: 79.9 KiB
# comauto_20200921_95 20201111T112906 - Wed Nov 11 11:33:10 2020 - Size: 6.2 GiB - WAL Size: 96.4 KiB
此处发生错误
在服务器2上：
sudo su barman
ssh barman@192.168.0.103 -C true
# OK
barman check comauto_20200921_95
# WAL archive: Failed
# ssh: Failed (Connection Failed using 'barman@192.168.0.103 -o BatchMode=yes -o StrictHostKeyChecking=no' return code 127)
barman cron
# ERROR: Failed to retrieve the primary node status: sync-info execution on remote primary server comauto_20200921_95 Failed: /bin/sh: 1: barman@192.168.0.103: not found
barman list-backup comauto_20200921_95
#
解决方法
一个明显的问题是primary_ssh_command缺少实际的ssh；大概应该是：
; the only difference
primary_ssh_command = ssh barman@192.168.0.103
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