最近のアップデートでいくつか問題に気づきました。3.4.0 beta1 から最新の (3.4.0.beta2-dev) にアップデートしたところ、サイトは動作していましたが、しばらくすると (2時間以内) サイトが応答しなくなりました (Cloudflare 経由でホストエラーが発生します)。古い Docker はまだ稼働中 (app/db を分割) なので、プロキシを古い Docker コンテナに戻したところ、まだ動作しています。
デバッグ方法を検討中です。データベースを新しいエントリに書き換えることなく、インスタンスを個別にデバッグするために、一時的に異なるホスト名を Docker に割り当てる方法はありますか？
コマンドラインからログを表示する方法はありますか？
はい、/var/discourse/shared/standalone/log/rails を確認してください。
Redisのエラーが多数発生しているようです。古いDockerコンテナに戻しても、これらのエラーは現在も発生しています。
E, [2024-08-29T13:47:47.112726 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `public_send'
E, [2024-08-29T13:47:47.112738 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (3 levels) in <class:DiscourseRedis>'
E, [2024-08-29T13:47:47.112748 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:29:in `ignore_readonly'
E, [2024-08-29T13:47:47.112768 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (2 levels) in <class:DiscourseRedis>'
E, [2024-08-29T13:47:47.112781 #74] ERROR -- : /var/www/discourse/app/jobs/regular/run_heartbeat.rb:16:in `last_heartbeat'
E, [2024-08-29T13:47:47.112790 #74] ERROR -- : config/unicorn.conf.rb:182:in `check_sidekiq_heartbeat'
E, [2024-08-29T13:47:47.112799 #74] ERROR -- : config/unicorn.conf.rb:269:in `master_sleep'
E, [2024-08-29T13:47:47.112807 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:295:in `join'
E, [2024-08-29T13:47:47.112815 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/bin/unicorn:128:in `<top (required)>'
E, [2024-08-29T13:47:47.112823 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load'
E, [2024-08-29T13:47:47.112831 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `<main>'
E, [2024-08-29T13:47:57.124969 #74] ERROR -- : master loop error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) (Redis::CannotConnectError)
E, [2024-08-29T13:47:57.125051 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:398:in `rescue in establish_connection'
E, [2024-08-29T13:47:57.125063 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:379:in `establish_connection'
E, [2024-08-29T13:47:57.125072 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:115:in `block in connect'
E, [2024-08-29T13:47:57.125080 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:344:in `with_reconnect'
E, [2024-08-29T13:47:57.125088 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:114:in `connect'
E, [2024-08-29T13:47:57.125109 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:409:in `ensure_connected'
E, [2024-08-29T13:47:57.125118 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:269:in `block in process'
E, [2024-08-29T13:47:57.125132 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:356:in `logging'
E, [2024-08-29T13:47:57.125142 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:268:in `process'
E, [2024-08-29T13:47:57.125150 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:161:in `call'
E, [2024-08-29T13:47:57.125159 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/mini_profiler/profiling_methods.rb:89:in `block in profile_method'
E, [2024-08-29T13:47:57.125167 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:270:in `block in send_command'
E, [2024-08-29T13:47:57.125181 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:269:in `synchronize'
E, [2024-08-29T13:47:57.125190 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:269:in `send_command'
E, [2024-08-29T13:47:57.125198 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/commands/strings.rb:191:in `get'
E, [2024-08-29T13:47:57.125207 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `public_send'
E, [2024-08-29T13:47:57.125216 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (3 levels) in <class:DiscourseRedis>'
E, [2024-08-29T13:47:57.125224 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:29:in `ignore_readonly'
E, [2024-08-29T13:47:57.125232 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (2 levels) in <class:DiscourseRedis>'
E, [2024-08-29T13:47:57.125241 #74] ERROR -- : /var/www/discourse/app/jobs/regular/run_heartbeat.rb:16:in `last_heartbeat'
E, [2024-08-29T13:47:57.125264 #74] ERROR -- : config/unicorn.conf.rb:182:in `check_sidekiq_heartbeat'
E, [2024-08-29T13:47:57.125272 #74] ERROR -- : config/unicorn.conf.rb:269:in `master_sleep'
E, [2024-08-29T13:47:57.125283 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:295:in `join'
E, [2024-08-29T13:47:57.125291 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/bin/unicorn:128:in `<top (required)>'
E, [2024-08-29T13:47:57.125299 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load'
E, [2024-08-29T13:47:57.125308 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `<main>'
E, [2024-08-29T13:48:07.136412 #74] ERROR -- : master loop error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) (Redis::CannotConnectError)
E, [2024-08-29T13:48:07.136504 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:398:in `rescue in establish_connection'
E, [2024-08-29T13:48:07.136517 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:379:in `establish_connection'
E, [2024-08-29T13:48:07.136526 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:115:in `block in connect'
E, [2024-08-29T13:48:07.136534 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:344:in `with_reconnect'
E, [2024-08-29T13:48:07.136542 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:114:in `connect'
E, [2024-08-29T13:48:07.136550 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:409:in `ensure_connected'
E, [2024-08-29T13:48:07.136559 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:269:in `block in process'
E, [2024-08-29T13:48:07.136567 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:356:in `logging'
E, [2024-08-29T13:48:07.136590 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:268:in `process'
E, [2024-08-29T13:48:07.136599 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:161:in `call'
E, [2024-08-29T13:48:07.136607 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/mini_profiler/profiling_methods.rb:89:in `block in profile_method'
E, [2024-08-29T13:48:07.136615 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:270:in `block in send_command'
E, [2024-08-29T13:48:07.136626 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:269:in `synchronize'
E, [2024-08-29T13:48:07.136638 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:269:in `send_command'
E, [2024-08-29T13:48:07.136646 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/commands/strings.rb:191:in `get'
E, [2024-08-29T13:48:07.136656 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `public_send'
E, [2024-08-29T13:48:07.136665 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (3 levels) in <class:DiscourseRedis>'
E, [2024-08-29T13:48:07.136674 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:29:in `ignore_readonly'
E, [2024-08-29T13:48:07.136682 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (2 levels) in <class:DiscourseRedis>'
E, [2024-08-29T13:48:07.136690 #74] ERROR -- : /var/www/discourse/app/jobs/regular/run_heartbeat.rb:16:in `last_heartbeat'
E, [2024-08-29T13:48:07.136698 #74] ERROR -- : config/unicorn.conf.rb:182:in `check_sidekiq_heartbeat'
E, [2024-08-29T13:48:07.136707 #74] ERROR -- : config/unicorn.conf.rb:269:in `master_sleep'
E, [2024-08-29T13:48:07.136716 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:295:in `join'
E, [2024-08-29T13:48:07.136735 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/bin/unicorn:128:in `<top (required)>'
E, [2024-08-29T13:48:07.136744 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load'
E, [2024-08-29T13:48:07.136752 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `<main>'
サーバーを再起動する価値があるかどうか疑問に思っています。
私の理解では、各「app」コンテナは独自のRedisサーバーをホストしているため、あるDockerコンテナが別のDockerコンテナのRedisサーバーを「汚染」する方法はないはずです。
ログを確認したところ、古いログはすべて非常に単純で、一部はわずか20バイトしかありません。
本日だけで、unicorn.stdout.log-20240829 には8.1MBのエラーメッセージがあり、これはローテーションされたもので、unicorn.stdout.log にはもう8MB近くになりそうです。
stderr.log に対応するエラーがあります。
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Job exception: Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
sidekiq-exception
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Job exception: Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
sidekiq-exception
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 2 [default] Unexpected error in MiniSchedulerLongRunningJobLogger thread : Redis::CannotConnectError : Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
discourse-exception
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Job exception: Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
sidekiq-exception
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] heartbeat: Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Job exception: Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
sidekiq-exception
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Job exception: Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
sidekiq-exception
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 2 [default] Unexpected error in MiniSchedulerLongRunningJobLogger thread : Redis::CannotConnectError : Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
discourse-exception
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] heartbeat: Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
```
タイミングはアップデートと一致しているようです。おやおや、ログが継続的にエラーを出していたのは、更新されたDockerインスタンスがまだ実行されていたからでした！更新されたDockerインスタンスを停止したところ、ログは再び静かになりました。
再起動して同じエラーが発生するかどうか確認してみます。
これと同じエラーだと思います: Error connecting to Redis
起動時の競合状態の一種でしょうか？
ちなみに、unicorn.stderr.log にタイムスタンプを追加することは可能でしょうか？デバッグに役立ちます！
ランチャーの再構築ログはどこかに保存されますか？何が原因だったのかの手がかりがないか、ログを確認したいと思っていました。
いいえ、コンソールに出力しているだけだと思います。
次回は次のようにすることができます。
./launcher rebuild app > buildlog.txt
しかし、それらは同じストレージを共有しているため、新しいものを停止しないと、悪いことが起こります。
残念ながら、半日稼働した後に同じ問題が発生しました。
ここでは Docker が再起動され、Thu Aug 29 15:58:34 UTC 2024 の行でライブ移行が行われました。
I, [2024-08-29T14:13:32.515947 #68] INFO -- : Refreshing Gem list
I, [2024-08-29T14:13:36.905305 #68] INFO -- : listening on addr=127.0.0.1:3000 fd=15
I, [2024-08-29T14:13:42.283988 #68] INFO -- : starting 1 supervised sidekiqs
I, [2024-08-29T14:13:46.693381 #317] INFO -- : Loading Sidekiq in process id 317
I, [2024-08-29T14:13:47.963367 #356] INFO -- : worker=0 ready
I, [2024-08-29T14:13:49.811765 #420] INFO -- : worker=1 ready
I, [2024-08-29T14:13:50.990474 #68] INFO -- : master process ready
I, [2024-08-29T14:13:51.394171 #538] INFO -- : worker=2 ready
I, [2024-08-29T14:13:52.632528 #688] INFO -- : worker=3 ready
I, [2024-08-29T14:13:53.468952 #824] INFO -- : worker=4 ready
I, [2024-08-29T14:13:54.848829 #945] INFO -- : worker=5 ready
I, [2024-08-29T14:13:55.276090 #1084] INFO -- : worker=6 ready
I, [2024-08-29T14:13:55.663733 #1206] INFO -- : worker=7 ready
*****Thu Aug 29 15:58:34 UTC 2024*****
I, [2024-08-29T16:19:42.701388 #2847461] INFO -- : Loading Sidekiq in process id 2847461
[STARTED]
'system' has started the backup!
Marking backup as running...
Loading Sidekiq in process id 2847461 の後に同じ INFO worker= の行が表示されなかった理由、そしてこれが重要かどうかはわかりません。
コンテナはバックアップが開始される午前 0 時頃まで正常に動作していました。バックアップ完了後のログは以下の通りです（メモリーとディスク容量には余裕があります）。
Finalizing backup...
Creating archive: discourse-2024-08-29-033737-v20240731190511.tar.gz
Making sure archive does not already exist...
Creating empty archive...
Archiving data dump...
Archiving uploads...
Removing tmp '/var/www/discourse/tmp/backups/default/2024-08-29-033737' directory...
Gzipping archive, this may take a while...
Executing the after_create_hook for the backup...
Deleting old backups...
Cleaning stuff up...
Removing '.tar' leftovers...
Marking backup as finished...
Refreshing disk stats...
Finished!
[SUCCESS]
I, [2024-08-29T07:39:13.994558 #74] INFO -- : Refreshing Gem list
I, [2024-08-29T07:39:22.139288 #74] INFO -- : listening on addr=127.0.0.1:3000 fd=15
I, [2024-08-29T07:39:28.538100 #74] INFO -- : starting 1 supervised sidekiqs
I, [2024-08-29T07:39:32.817733 #338] INFO -- : Loading Sidekiq in process id 338
I, [2024-08-29T07:39:33.888697 #377] INFO -- : worker=0 ready
I, [2024-08-29T07:39:35.956335 #449] INFO -- : worker=1 ready
I, [2024-08-29T07:39:37.233970 #74] INFO -- : master process ready
I, [2024-08-29T07:39:37.437223 #575] INFO -- : worker=2 ready
I, [2024-08-29T07:39:38.974154 #718] INFO -- : worker=3 ready
I, [2024-08-29T07:39:39.789086 #842] INFO -- : worker=4 ready
I, [2024-08-29T07:39:40.417719 #960] INFO -- : worker=5 ready
I, [2024-08-29T07:39:40.993249 #1084] INFO -- : worker=6 ready
I, [2024-08-29T07:39:41.395415 #1236] INFO -- : worker=7 ready
I, [2024-08-29T07:43:38.285891 #74] INFO -- : master reopening logs...
I, [2024-08-29T07:43:38.288650 #2790085] INFO -- : Sidekiq reopening logs...
I, [2024-08-29T07:43:38.658839 #454] INFO -- : worker=1 reopening logs...
I, [2024-08-29T07:43:53.315240 #845] INFO -- : worker=4 reopening logs...
I, [2024-08-29T07:43:53.315258 #1121415] INFO -- : worker=0 reopening logs...
I, [2024-08-29T07:43:53.318146 #720] INFO -- : worker=3 reopening logs...
I, [2024-08-29T07:43:53.318152 #1256] INFO -- : worker=7 reopening logs...
I, [2024-08-29T07:43:53.319042 #586] INFO -- : worker=2 reopening logs...
I, [2024-08-29T07:43:53.322139 #960] INFO -- : worker=5 reopening logs...
I, [2024-08-29T07:43:53.330282 #1109] INFO -- : worker=6 reopening logs...
E, [2024-08-29T09:24:44.381913 #377] ERROR -- : app error: Connection timed out (Redis::TimeoutError)
E, [2024-08-29T09:24:44.382304 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/connectio
n/ruby.rb:58:in `block in _read_from_socket'
E, [2024-08-29T09:24:44.382516 #377] ERROR -- : <internal:kernel>:187:in `loop'
E, [2024-08-29T09:24:44.382536 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/connectio
n/ruby.rb:54:in `_read_from_socket'
E, [2024-08-29T09:24:44.382687 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/connectio
n/ruby.rb:47:in `gets'
E, [2024-08-29T09:24:44.382782 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/connection/ruby.rb:382:in `read'
E, [2024-08-29T09:24:44.383064 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:311:in `block in read'
E, [2024-08-29T09:24:44.383269 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:299:in `io'
E, [2024-08-29T09:24:44.383293 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:310:in `read'
E, [2024-08-29T09:24:44.383304 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:161:in `block in call'
E, [2024-08-29T09:24:44.383313 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:279:in `block (2 levels) in process'
E, [2024-08-29T09:24:44.383323 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:411:in `ensure_connected'
E, [2024-08-29T09:24:44.383332 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:269:in `block in process'
E, [2024-08-29T09:24:44.383341 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:356:in `logging'
E, [2024-08-29T09:24:44.383349 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:268:in `process'
E, [2024-08-29T09:24:44.383358 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:161:in `call'
E, [2024-08-29T09:24:44.383366 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/mini_profiler/profiling_methods.rb:89:in `block in profile_method'
E, [2024-08-29T09:24:44.383375 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:270:in `block in send_command'
E, [2024-08-29T09:24:44.383384 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:269:in `synchronize'
E, [2024-08-29T09:24:44.383407 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:269:in `send_command'
E, [2024-08-29T09:24:44.383416 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/commands/lists.rb:11:in `llen'
E, [2024-08-29T09:24:44.383425 #377] ERROR -- : /var/www/discourse/lib/rate_limiter.rb:192:in `is_under_limit?'
E, [2024-08-29T09:24:44.383434 #377] ERROR -- : /var/www/discourse/lib/rate_limiter.rb:72:in `can_perform?'
E, [2024-08-29T09:24:44.383443 #377] ERROR -- : /var/www/discourse/lib/middleware/request_tracker.rb:488:in `rate_limit'
E, [2024-08-29T09:24:44.383453 #377] ERROR -- : /var/www/discourse/lib/middleware/request_tracker.rb:322:in `call'
E, [2024-08-29T09:24:44.383461 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/actionpack-7.1.4/lib/action_dispatch/middleware/remote_ip.rb:92:in `call'
E, [2024-08-29T09:24:44.383470 #377] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rails_multisite-6.1.0/lib/rails_multisite/middleware.rb:26:in `call'
E, [2024-08-30T05:11:44.698172 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/railties-7.1.4/lib/rails/engine.rb:536:in `call'
E, [2024-08-30T05:11:44.698180 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/railties-7.1.4/lib/rails/railtie.rb:226:in `public_send'
E, [2024-08-30T05:11:44.698189 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/railties-7.1.4/lib/rails/railtie.rb:226:in `method_missing'
E, [2024-08-30T05:11:44.698199 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-2.2.9/lib/rack/urlmap.rb:74:in `block in call'
E, [2024-08-30T05:11:44.698207 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-2.2.9/lib/rack/urlmap.rb:58:in `each'
E, [2024-08-30T05:11:44.698216 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-2.2.9/lib/rack/urlmap.rb:58:in `call'
E, [2024-08-30T05:11:44.698225 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:634:in `process_client'
E, [2024-08-30T05:11:44.698233 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:739:in `worker_loop'
E, [2024-08-30T05:11:44.698241 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:547:in `spawn_missing_workers'
E, [2024-08-30T05:11:44.698261 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:143:in `start'
E, [2024-08-30T05:11:44.698270 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/bin/unicorn:128:in `<top (required)>'
E, [2024-08-30T05:11:44.698291 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load'
E, [2024-08-30T05:11:44.698300 #420] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `<main>'
バックアップ後に Sidekiq が再起動してから 2 時間以内に Redis のタイムアウトエラーが発生します。なぜ 2 時間以内なのかはわかりません。おそらく、朝にサイトを最初に読み込んだことが原因かもしれません。
何かアイデアはありますか？コンテナの起動を監視すれば十分だと思っていましたが、バックアップ後の Sidekiq の再起動後にエラーが再発する可能性があるなら、別の戦略が必要です。
また、以下も発見しました。
26 E, [2024-08-29T09:25:58.612452 #74] ERROR -- : worker=3 PID:718 running too long (29s), sending USR2 to dump thread backtraces
27 E, [2024-08-29T09:25:58.612563 #74] ERROR -- : worker=4 PID:842 running too long (29s), sending USR2 to dump thread backtraces
28 E, [2024-08-29T09:25:58.612587 #74] ERROR -- : worker=5 PID:960 running too long (29s), sending USR2 to dump thread backtraces
29 E, [2024-08-29T09:25:59.613766 #74] ERROR -- : worker=3 PID:718 running too long (30s), sending USR2 to dump thread backtraces
30 E, [2024-08-29T09:25:59.613874 #74] ERROR -- : worker=4 PID:842 running too long (30s), sending USR2 to dump thread backtraces
31 E, [2024-08-29T09:25:59.613897 #74] ERROR -- : worker=5 PID:960 running too long (30s), sending USR2 to dump thread backtraces
32 E, [2024-08-29T09:25:59.613931 #74] ERROR -- : worker=6 PID:1084 running too long (29s), sending USR2 to dump thread backtraces
Redisがストレージに別の場所（たとえば、/var/log/redis）を使用できるようにして、「ホットスタンバイ」コンテナを配置できるようにする方法はありますか？
スタンバイ状態のコンテナには、データコンテナとWebコンテナを分離します。これにより、複数のコンテナが同じデータベースとRedisに対して実行できます。
外部データベースはすでに使用しているので、現在はWebとRedisのコンテナを、個別のWebコンテナとRedisコンテナに分割し、Webのホットバックアップを行います。
したがって、実質的には共有DBとRedisコンテナ、そして複数のWebコンテナということになります。
Redis の分離に関する経験はありますか？また、それは推奨できる設定ですか、それとも注意が必要な設定ですか？標準からあまりかけ離れることに少し懸念があり、落とし穴に陥るのではないかと心配しています。
データベースはすでに分離されています。
はい、マネージドRedisとRedis専用コンテナの両方を使用して、以前に実行しました。