由于 systemid 错误，无法使用 barman 进行备份

Question

我正在尝试使用 barman 命令进行备份：barman backup pg 但它显示了类似的错误

ERROR: Impossible to start the backup. Check the log for more details, or run 'barman check pg'

后来我使用barman命令检查：barman check pg我发现另一个错误 systemid coherence: FAILED 。接下来我在酒保检查 postgres 的 systemid，我发现 systemdid 不同。 在这种情况下需要做什么？

我删除了identity.json 文件形式的酒保。虽然它以某种方式解决了我的问题。但我不确定解决这个问题是否正确？

identity.json 的实际用途是什么？我正在寻找专家意见。

Server pg:
        PostgreSQL: OK
        superuser or standard user with backup privileges: OK
        PostgreSQL streaming: OK
        wal_level: OK
        replication slot: OK
        directories: OK
        retention policy settings: OK
        backup maximum age: OK (interval provided: 1 day, latest backup age: 2 hours, 57 minutes, 55 seconds)
        backup minimum size: OK (876.1 MiB)
        wal maximum age: OK (no last_wal_maximum_age provided)
        wal size: OK (31.5 KiB)
        compression settings: OK
        failed backups: OK (there are 0 failed backups)
        minimum redundancy requirements: OK (have 3 backups, expected at least 1)
        ssh: OK (PostgreSQL server)
        systemid coherence: FAILED (the system Id of the connected PostgreSQL server changed, stored in "/var/lib/barman/pg/identity.json")
        pg_receivexlog: OK
        pg_receivexlog compatible: OK
        receive-wal running: OK
        archive_mode: OK
        archive_command: OK
        continuous archiving: OK
        archiver errors: FAILED (duplicates: 50)

Answer 1

没有文档解释这个错误“systemid coherence: FAILED (the system Id of the connected PostgreSQL server changed, stored in "/var/lib/barman/pg/identity.json")”

谢谢，解决方案奏效了。 IT 会自动创建身份文件。