# Rebake 失败：如何诊断和修复？

**URL:** <https://meta.discourse.org/t/rebake-failing-how-to-diagnose-and-fix/389064>\
**Category:** Product Support\
**Created:** [2025 年11 月 19 日 17:12 UTC](https://meta.discourse.org/t/rebake-failing-how-to-diagnose-and-fix/389064 "2025-11-19T17:12:14Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

作者： ![Canapin](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/canapin/32/119591_2.png) [@Canapin](https://meta.discourse.org/u/Canapin)\
发布日期： [2025 年11 月 19 日 17:12 UTC](https://meta.discourse.org/t/rebake-failing-how-to-diagnose-and-fix/389064/1 "2025-11-19T17:12:14Z")

</div>

你好，

在禁用论坛的 CDN 后，我运行了 `rake posts:rebake` 命令。  
在重新烘焙了几万条帖子后，该命令失败了。

搜索其中一条错误消息（“PQsocket() can’t get socket descriptor”）后，我找到了 [Rake:rebake crashes with errors: PG::ConnectionBad: PQsocket - #8 by j127](https://meta.discourse.org/t/rake-rebake-crashes-with-errors-pg-pqsocket/256344/8?u=canapin) 这个链接，其中提到增加交换空间（swap）可以解决问题。  
我不确定是否属于同样的问题，但我尝试了该方法，重新烘焙仍然失败。增加交换空间后，也许在失败前能处理的帖子数量比以前更多，但我没有记录之前失败时具体处理了多少条帖子。

具体情况如下：

1. 重新烘焙开始后，在处理约 20 万条帖子（总共 160 万条）后崩溃。

```plaintext
root@Unicyclist-app:/var/www/discourse# rake posts:rebake
Rebaking post markdown for 'default'
   202930 / 1634878 ( 12.4%)
Failed to rebake (topic_id: 196639, post_id: 1470519)
PQconsumeInput() server closed the connection unexpectedly
        This probably means the server terminated abnormally
        before or while processing the request.

```

2. 出现该消息后，随后的数百条帖子会立即显示以下错误：

```plaintext
   202931 / 1634878 ( 12.4%)
Failed to rebake (topic_id: 196638, post_id: 1470518)
PQsocket() can't get socket descriptor
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in `exec'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in `async_exec'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/postgresql/database_statements.rb:167:in `perform_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:556:in `block (2 levels) in raw_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:1017:in `block in with_raw_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/concurrency/null_lock.rb:9:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:986:in `with_raw_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:555:in `block in raw_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/notifications/instrumenter.rb:58:in `instrument'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:1137:in `log'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:554:in `raw_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:591:in `internal_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:547:in `internal_exec_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:693:in `select'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:73:in `select_all'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/query_cache.rb:262:in `select_all'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/querying.rb:68:in `_query_by_sql'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/querying.rb:53:in `block in find_by_sql'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:416:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_handling.rb:312:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/querying.rb:52:in `find_by_sql'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/statement_cache.rb:152:in `execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/core.rb:454:in `block in cached_find_by'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:416:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_handling.rb:312:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/core.rb:442:in `cached_find_by'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/core.rb:327:in `find_by'
/var/www/discourse/lib/pretty_text/helpers.rb:20:in `avatar_template'
/var/www/discourse/lib/pretty_text.rb:255:in `call'
/var/www/discourse/lib/pretty_text.rb:255:in `eval'
/var/www/discourse/lib/pretty_text.rb:255:in `block in markdown'
/var/www/discourse/lib/pretty_text.rb:695:in `block in protect'
/var/www/discourse/lib/pretty_text.rb:695:in `synchronize'
/var/www/discourse/lib/pretty_text.rb:695:in `protect'
/var/www/discourse/lib/pretty_text.rb:192:in `markdown'
/var/www/discourse/lib/pretty_text.rb:318:in `cook'
/var/www/discourse/app/models/post_analyzer.rb:30:in `cook'
/var/www/discourse/app/models/post.rb:359:in `cook'
/var/www/discourse/app/models/post.rb:836:in `rebake!'
/var/www/discourse/lib/tasks/posts.rake:145:in `rebake_post'
/var/www/discourse/lib/tasks/posts.rake:132:in `block (2 levels) in rebake_posts'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation/delegation.rb:101:in `each'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation/delegation.rb:101:in `each'
/var/www/discourse/lib/tasks/posts.rake:131:in `block in rebake_posts'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/core_ext/range/each.rb:14:in `step'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/core_ext/range/each.rb:14:in `step'
/var/www/discourse/lib/tasks/posts.rake:126:in `rebake_posts'
/var/www/discourse/lib/tasks/posts.rake:111:in `block in rebake_posts_all_sites'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rails_multisite-7.0.0/lib/rails_multisite/connection_management/null_instance.rb:49:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rails_multisite-7.0.0/lib/rails_multisite/connection_management/null_instance.rb:36:in `each_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rails_multisite-7.0.0/lib/rails_multisite/connection_management.rb:17:in `each_connection'
/var/www/discourse/lib/tasks/posts.rake:111:in `rebake_posts_all_sites'
/var/www/discourse/lib/tasks/posts.rake:7:in `block in <main>'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/task.rb:281:in `block in execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/task.rb:281:in `each'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/task.rb:281:in `execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/task.rb:219:in `block in invoke_with_call_chain'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/task.rb:199:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/task.rb:199:in `invoke_with_call_chain'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/task.rb:188:in `invoke'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/application.rb:188:in `invoke_task'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/application.rb:138:in `block (2 levels) in top_level'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/application.rb:138:in `each'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/application.rb:138:in `block in top_level'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/application.rb:147:in `run_with_threads'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/application.rb:132:in `top_level'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/application.rb:83:in `block in run'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/application.rb:214:in `standard_exception_handling'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.3.1/lib/rake/application.rb:80:in `run'
bin/rake:13:in `<top (required)>'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/lib/bundler/cli/exec.rb:59:in `load'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/lib/bundler/cli/exec.rb:59:in `kernel_load'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/lib/bundler/cli/exec.rb:23:in `run'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/lib/bundler/cli.rb:452:in `exec'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/lib/bundler/vendor/thor/lib/thor/command.rb:28:in `run'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/lib/bundler/vendor/thor/lib/thor.rb:538:in `dispatch'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/lib/bundler/cli.rb:35:in `dispatch'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/lib/bundler/vendor/thor/lib/thor/base.rb:584:in `start'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/lib/bundler/cli.rb:29:in `start'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/exe/bundle:28:in `block in <top (required)>'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/lib/bundler/friendly_errors.rb:117:in `with_friendly_errors'
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.6.4/exe/bundle:20:in `<top (required)>'
/usr/local/bin/bundle:25:in `load'
/usr/local/bin/bundle:25:in `<main>'

```

3. 最终多次出现以下错误并结束：

```plaintext
Caused by:
ActiveRecord::ConnectionNotEstablished: PQsocket() can't get socket descriptor (ActiveRecord::ConnectionNotEstablished)
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in `exec'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in `async_exec'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/postgresql/database_statements.rb:167:in `perform_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:556:in `block (2 levels) in raw_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:1017:in `block in with_raw_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/concurrency/null_lock.rb:9:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:986:in `with_raw_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:555:in `block in raw_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/notifications/instrumenter.rb:58:in `instrument'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:1137:in `log'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:554:in `raw_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:591:in `internal_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:547:in `internal_exec_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:693:in `select'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:73:in `select_all'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/query_cache.rb:262:in `select_all'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/querying.rb:68:in `_query_by_sql'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1459:in `block (2 levels) in exec_main_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:416:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_handling.rb:312:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1458:in `block in exec_main_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1480:in `skip_query_cache_if_necessary'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1442:in `exec_main_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1420:in `block in exec_queries'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1480:in `skip_query_cache_if_necessary'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1414:in `exec_queries'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/goldiloader-6.0.0/lib/goldiloader/active_record_patches.rb:40:in `exec_queries'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1191:in `load'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:353:in `records'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation/delegation.rb:101:in `each'
/var/www/discourse/lib/tasks/posts.rake:131:in `block in rebake_posts'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/core_ext/range/each.rb:14:in `step'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/core_ext/range/each.rb:14:in `step'
/var/www/discourse/lib/tasks/posts.rake:126:in `rebake_posts'
/var/www/discourse/lib/tasks/posts.rake:111:in `block in rebake_posts_all_sites'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rails_multisite-7.0.0/lib/rails_multisite/connection_management/null_instance.rb:49:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rails_multisite-7.0.0/lib/rails_multisite/connection_management/null_instance.rb:36:in `each_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rails_multisite-7.0.0/lib/rails_multisite/connection_management.rb:17:in `each_connection'
/var/www/discourse/lib/tasks/posts.rake:111:in `rebake_posts_all_sites'
/var/www/discourse/lib/tasks/posts.rake:7:in `block in <main>'
/usr/local/bin/bundle:25:in `load'
/usr/local/bin/bundle:25:in `<main>'

Caused by:
PG::ConnectionBad: PQsocket() can't get socket descriptor (PG::ConnectionBad)
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in `exec'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in `async_exec'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/postgresql/database_statements.rb:167:in `perform_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:556:in `block (2 levels) in raw_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:1017:in `block in with_raw_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/concurrency/null_lock.rb:9:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:986:in `with_raw_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:555:in `block in raw_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/notifications/instrumenter.rb:58:in `instrument'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:1137:in `log'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:554:in `raw_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:591:in `internal_execute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:547:in `internal_exec_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:693:in `select'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:73:in `select_all'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/query_cache.rb:262:in `select_all'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/querying.rb:68:in `_query_by_sql'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1459:in `block (2 levels) in exec_main_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:416:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/connection_handling.rb:312:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1458:in `block in exec_main_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1480:in `skip_query_cache_if_necessary'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1442:in `exec_main_query'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1420:in `block in exec_queries'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1480:in `skip_query_cache_if_necessary'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1414:in `exec_queries'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/goldiloader-6.0.0/lib/goldiloader/active_record_patches.rb:40:in `exec_queries'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:1191:in `load'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation.rb:353:in `records'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-8.0.4/lib/active_record/relation/delegation.rb:101:in `each'
/var/www/discourse/lib/tasks/posts.rake:131:in `block in rebake_posts'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/core_ext/range/each.rb:14:in `step'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-8.0.4/lib/active_support/core_ext/range/each.rb:14:in `step'
/var/www/discourse/lib/tasks/posts.rake:126:in `rebake_posts'
/var/www/discourse/lib/tasks/posts.rake:111:in `block in rebake_posts_all_sites'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rails_multisite-7.0.0/lib/rails_multisite/connection_management/null_instance.rb:49:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rails_multisite-7.0.0/lib/rails_multisite/connection_management/null_instance.rb:36:in `each_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rails_multisite-7.0.0/lib/rails_multisite/connection_management.rb:17:in `each_connection'
/var/www/discourse/lib/tasks/posts.rake:111:in `rebake_posts_all_sites'
/var/www/discourse/lib/tasks/posts.rake:7:in `block in <main>'
/usr/local/bin/bundle:25:in `load'
/usr/local/bin/bundle:25:in `<main>'
Tasks: TOP => posts:rebake
(See full trace by running task with --trace)
root@Unicyclist-app:/var/www/discourse#

```

以下是重新烘焙期间 `free -h` 的输出（重新烘焙过程中任何时刻的数值大致相同）：

```plaintext
               total used free shared buff/cache available
Mem: 7.6Gi 4.6Gi 231Mi 2.1Gi 2.8Gi 709Mi
Swap: 2.0Gi 1.8Gi 194Mi

```

我还有大量可用空间（之前几次没有，但我特意释放了一些空间以防万一，但这并未改变任何情况）。

过去几年里，我曾多次对该论坛的所有帖子进行过重新烘焙，从未遇到过任何问题。论坛规模增长不大，服务器规格也与之前相同。

---

_[View the full topic](https://meta.discourse.org/t/rebake-failing-how-to-diagnose-and-fix/389064)._