# PostgreSQL 18 备份失败

**URL:** https://meta.discourse.org/t/backup-fails-with-postgres-18/403289
**Category:** Support
**Created:** [2026年五月19日 06:32 UTC](https://meta.discourse.org/t/backup-fails-with-postgres-18/403289 "2026-05-19T06:32:20Z")
**Posts on this page:** 1
**Showing post:** 1

<div class="post-metadata">

### Author: ![Thomas\_Rother](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/thomas_rother/32/423597_2.png) [@Thomas\_Rother](https://meta.discourse.org/u/Thomas_Rother)
#### Post date: [2026年五月19日 06:32 UTC](https://meta.discourse.org/t/backup-fails-with-postgres-18/403289/1 "2026-05-19T06:32:21Z")

</div>

我们 Discourse 实例的数据库并非本地容器，而是使用了一个集中式数据库集群。最近，中央 PostgreSQL 已更新至 18.3 版本。我注意到现在的 Discourse 备份失败了：

```plaintext
[2026-05-19 03:37:37] [STARTED]
[2026-05-19 03:37:37] 'system' 已启动备份！
[2026-05-19 03:37:37] 将备份标记为运行中...
[2026-05-19 03:37:37] 确保 '/var/www/discourse/tmp/backups/default/2026-05-19-033737' 存在...
[2026-05-19 03:37:37] 确保 '/var/www/discourse/public/backups/default' 存在...
[2026-05-19 03:37:37] 更新元数据...
[2026-05-19 03:37:37] 转储数据库的公共架构...
[2026-05-19 03:37:37] pg_dump: 错误：因服务器版本不匹配而中止
[2026-05-19 03:37:37] pg_dump: 详情：服务器版本：18.3 (Ubuntu 18.3-1.pgdg24.04+1)；pg_dump 版本：15.15 (Debian 15.15-1.pgdg12+1)
[2026-05-19 03:37:37] 异常：pg_dump 失败
[2026-05-19 03:37:37] /var/www/discourse/lib/backup_restore/creator.rb:173:in 'BackupRestore::Creator#dump_public_schema'
/var/www/discourse/lib/backup_restore/creator.rb:36:in 'BackupRestore::Creator#run'
/var/www/discourse/lib/backup_restore.rb:13:in 'BackupRestore.backup!'
/var/www/discourse/app/jobs/regular/create_backup.rb:10:in 'Jobs::CreateBackup#execute'

```

有什么修复建议吗？

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