오래된 Discourse 인스턴스 여러 개를 문제없이 오랫동안 운영해 왔습니다. 최근 DO(DigitalOcean)에서 Hetzner로 이전했습니다. 이전 작업의 일환으로 마침내 모니터링을 시작했는데, 현재는 Uptime을 사용하고 있습니다. 서버는 Ubuntu USG를 적용하여 강화했습니다.
7개 인스턴스 중 3개가 매일 비슷한 시각에 5~15분 정도 정기적으로 오프라인 상태가 됩니다. 아마도 DO에서 이런 현상이 있었을 수도 있지만, 모니터링이 없었으니 알 길이 없습니다.
모든 사이트는 동일한 공식 플러그인 세트를 실행하고 있습니다.
메모리 문제를 의심하여 인스턴스 하나를 CPU 2개, RAM 2GB에서 CPU 3개, RAM 4GB로 업그레이드했습니다.
db_shared_buffers: "256MB"는 변경하지 않았습니다.
UNICORN_WORKERS: 4도 변경하지 않았습니다.
성능 향상이 도움이 된 것 같지만, 활동이 매우 적은 사이트에서 이렇게 많은 리소스가 필요한 걸까요?
어떤 의견이나 제안이든 환영합니다.
사건 시퀀스는 항상 Job 예외 오류로 시작됩니다
Message (4 copies reported)
Job exception: Waited 1.0 seconds
Backtrace
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client/ruby_connection/buffered_io.rb:214:in `block in fill_buffer'
<internal:kernel>:187:in `loop'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client/ruby_connection/buffered_io.rb:197:in `fill_buffer'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client/ruby_connection/buffered_io.rb:187:in `ensure_remaining'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client/ruby_connection/buffered_io.rb:152:in `getbyte'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client/ruby_connection/resp3.rb:113:in `parse'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client/ruby_connection/resp3.rb:50:in `load'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client/ruby_connection.rb:96:in `read'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client/connection_mixin.rb:31:in `call'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client.rb:316:in `block (2 levels) in call_v'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client/middlewares.rb:16:in `call'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client.rb:315:in `block in call_v'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client.rb:721:in `ensure_connected'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-client-0.25.0/lib/redis_client.rb:314:in `call_v'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-5.4.0/lib/redis/client.rb:90:in `call_v'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-4.0.0/lib/mini_profiler/profiling_methods.rb:90:in `block in profile_method'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-5.4.0/lib/redis.rb:152:in `block in send_command'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-5.4.0/lib/redis.rb:151:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-5.4.0/lib/redis.rb:151:in `send_command'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-5.4.0/lib/redis/commands/strings.rb:191:in `get'
/var/www/discourse/lib/discourse_redis.rb:144:in `public_send'
/var/www/discourse/lib/discourse_redis.rb:144:in `block (3 levels) in <class:DiscourseRedis>'
/var/www/discourse/lib/discourse_redis.rb:29:in `ignore_readonly'
/var/www/discourse/lib/discourse_redis.rb:144:in `block (2 levels) in <class:DiscourseRedis>'
/var/www/discourse/lib/sidekiq/pausable.rb:19:in `paused?'
/var/www/discourse/lib/sidekiq/pausable.rb:105:in `paused?'
/var/www/discourse/config/initializers/100-sidekiq.rb:98:in `block (3 levels) in <main>'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/mini_scheduler-0.18.0/lib/mini_scheduler.rb:74:in `block (2 levels) in start'
그 직후 다음과 유사한 오류가 발생합니다:
Failed to warm up pretty text: terminated /var/www/discourse/lib/discourse_js_processor.rb:89:in `call' /var/www/discourse/lib/discourse_js_processor.rb:89:in `block in v8_call' /var/www/discourse/lib
Message (2 copies reported)
Failed to warm up pretty text: terminated
/var/www/discourse/lib/discourse_js_processor.rb:89:in `call'
/var/www/discourse/lib/discourse_js_processor.rb:89:in `block in v8_call'
/var/www/discourse/lib/discourse_js_processor.rb:88:in `synchronize'
/var/www/discourse/lib/discourse_js_processor.rb:88:in `v8_call'
/var/www/discourse/lib/discourse_js_processor.rb:113:in `perform'
/var/www/discourse/lib/pretty_text.rb:34:in `apply_es6_file'
/var/www/discourse/lib/pretty_text.rb:41:in `block in ctx_load_directory'
/var/www/discourse/lib/pretty_text.rb:39:in `each'
/var/www/discourse/lib/pretty_text.rb:39:in `ctx_load_directory'
/var/www/discourse/lib/pretty_text.rb:81:in `create_es6_context'
/var/www/discourse/lib/pretty_text.rb:135:in `block in v8'
/var/www/discourse/lib/pretty_text.rb:133:in `synchronize'
/var/www/discourse/lib/pretty_text.rb:133:in `v8'
/var/www/discourse/lib/pretty_text.rb:176:in `block in markdown'
/var/www/discourse/lib/pretty_text.rb:678:in `block in protect'
/var/www/discourse/lib/pretty_text.rb:678:in `synchronize'
/var/www/discourse/lib/pretty_text.rb:678:in `protect'
/var/www/discourse/lib/pretty_text.rb:175:in `markdown'
/var/www/discourse/lib/pretty_text.rb:301:in `cook'
/var/www/discourse/lib/discourse.rb:960:in `after_fork'
config/unicorn.conf.rb:197:in `block in reload'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:684:in `init_worker_process'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:721:in `worker_loop'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:547:in `spawn_missing_workers'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:561:in `maintain_worker_count'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:294:in `join'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/bin/unicorn:128:in `<top (required)>'
/var/w...
Backtrace
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.2.2.1/lib/active_support/broadcast_logger.rb:134:in `block in error'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.2.2.1/lib/active_support/broadcast_logger.rb:231:in `block in dispatch'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.2.2.1/lib/active_support/broadcast_logger.rb:231:in `each'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.2.2.1/lib/active_support/broadcast_logger.rb:231:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.2.2.1/lib/active_support/broadcast_logger.rb:134:in `error'
/var/www/discourse/lib/discourse.rb:962:in `rescue in after_fork'
/var/www/discourse/lib/discourse.rb:958:in `after_fork'
config/unicorn.conf.rb:197:in `block in reload'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:684:in `init_worker_process'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:721:in `worker_loop'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:547:in `spawn_missing_workers'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:561:in `maintain_worker_count'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:294:in `join'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/bin/unicorn:128:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load'
/var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `<main>'
`
``