WAL存档:失败(请确保WAL传送已设置)

Question

我正试着配置Barman作为后援。当我做barman check replica时，我一直得到：

Server replica:
WAL archive: FAILED (please make sure WAL shipping is setup)
PostgreSQL: OK
superuser: OK
wal_level: OK
directories: OK
retention policy settings: OK
backup maximum age: FAILED (interval provided: 1 day, latest backup age: No available backups)
compression settings: OK
failed backups: OK (there are 0 failed backups)
minimum redundancy requirements: FAILED (have 0 backups, expected at least 2)
ssh: OK (PostgreSQL server)
not in recovery: FAILED (cannot perform exclusive backup on a standby)
archive_mode: OK
archive_command: OK
continuous archiving: OK
archiver errors: OK

我正在使用Postgresql 9.6和Barman2.1；我不知道有什么问题需要帮助吗？以下是我的Barman服务器配置：

description = "Database backup"
conninfo = host=<db-ip> user=postgres dbname=db
backup_method = rsync
ssh_command = ssh postgres@<db-ip>
archiver = on

Answer 1

barman check试图通过断言存档中确实存在某种内容来确认归档设置是否正确。但是，WAL段通常只在填充完之后才存档，如果服务器空闲，这是永远不会发生的。

为了解决这个问题，Barman提供了一个命令来强制一个段开关，等待完成的WAL出现，然后立即存档：

barman switch-xlog --force --archive replica

Answer 2

简而言之

酒保的incoming_wals_directory和Postgresql.conf的archive_command不匹配，详见这里

详细信息

另一个原因是没有匹配之间的

• 酒保incoming_wals_directory
• Postgresql.conf's archive_command

Bash检查

barman@backup $ barman show-server pg | grep incoming_wals_directory
# output1
# > incoming_wals_directory: /var/lib/barman/pg/incoming

postgres@pg $ cat /etc/postgresql/10/main/postgresql.conf | grep archive_command
# output2
# > archive_command = 'rsync -a  %p  barman@staging:/var/lib/barman/pg/incoming/%f' 

我们必须在:output2 1和：2中有相同的路径

如果它们不匹配，那么就让它们匹配，并且不要忘记在之后重新启动postgres。