Mi foro autoalojado (https://intfiction.org/) ha comenzado a ser muy lento en las últimas semanas, y frecuentemente presenta errores 502 y 503.
Estoy en la rama estable, versión 2026.1.5.
Buscar esos errores aquí no ha revelado ninguna causa probable:
- el foro se compila y lanza correctamente
- el servidor parece tener suficiente capacidad (13,5 GB de espacio en disco libre, 1,6/1,9 GB de RAM, 1,7/2,2 GB de swap)
Al revisar htop, el promedio de carga sí parece alto: 1.67, 1.55, 3.12. Este proceso a veces usa más del 40% de la CPU: unicorn worker[0] -E production -c config/unicorn.conf.rb.
En los registros del foro estoy viendo muchos errores como estos:
Job exception: execution expired
net-smtp-0.5.1/lib/net/smtp.rb:663:in 'TCPSocket#initialize'
net-smtp-0.5.1/lib/net/smtp.rb:663:in 'IO.open'
net-smtp-0.5.1/lib/net/smtp.rb:663:in 'Net::SMTP#tcp_socket'
net-smtp-0.5.1/lib/net/smtp.rb:672:in 'block in Net::SMTP#do_start'
timeout-0.5.0/lib/timeout.rb:222:in 'block in Timeout.timeout'
timeout-0.5.0/lib/timeout.rb:229:in 'Timeout.timeout'
net-smtp-0.5.1/lib/net/smtp.rb:671:in 'Net::SMTP#do_start'
net-smtp-0.5.1/lib/net/smtp.rb:642:in 'Net::SMTP#start'
mail-2.9.0/lib/mail/network/delivery_methods/smtp.rb:154:in 'Mail::SMTP#start_smtp_session'
mail-2.9.0/lib/mail/network/delivery_methods/smtp.rb:108:in 'Mail::SMTP#deliver!'
mail-2.9.0/lib/mail/message.rb:269:in 'Mail::Message#deliver!'
/usr/local/lib/ruby/3.4.0/delegate.rb:87:in 'Delegator#method_missing'
/var/www/discourse/lib/email/sender.rb:296:in 'Email::Sender#send'
/var/www/discourse/lib/email/processor.rb:151:in 'Email::Processor#handle_failure'
/var/www/discourse/lib/email/processor.rb:31:in 'Email::Processor#process!'
/var/www/discourse/lib/email/processor.rb:13:in 'Email::Processor.process!'
/var/www/discourse/app/jobs/regular/process_email.rb:8:in 'Jobs::ProcessEmail#execute'
/var/www/discourse/app/jobs/base.rb:318:in 'block (2 levels) in Jobs::Base#perform'
rails_multisite-7.0.0/lib/rails_multisite/connection_management/null_instance.rb:49:in 'RailsMultisite::ConnectionManagement::NullInstance#with_connection'
rails_multisite-7.0.0/lib/rails_multisite/connection_management.rb:17:in 'RailsMultisite::ConnectionManagement.with_connection'
/var/www/discourse/app/jobs/base.rb:305:in 'block in Jobs::Base#perform'
/var/www/discourse/app/jobs/base.rb:301:in 'Array#each'
/var/www/discourse/app/jobs/base.rb:301:in 'Jobs::Base#perform'
sidekiq-7.3.9/lib/sidekiq/processor.rb:220:in 'Sidekiq::Processor#execute_job'
sidekiq-7.3.9/lib/sidekiq/processor.rb:185:in 'block (4 levels) in Sidekiq::Processor#process'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:180:in 'Sidekiq::Middleware::Chain#traverse'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:183:in 'block in Sidekiq::Middleware::Chain#traverse'
/var/www/discourse/lib/sidekiq/suppress_user_email_errors.rb:6:in 'Sidekiq::SuppressUserEmailErrors#call'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:182:in 'Sidekiq::Middleware::Chain#traverse'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:183:in 'block in Sidekiq::Middleware::Chain#traverse'
/var/www/discourse/lib/sidekiq/discourse_event.rb:6:in 'Sidekiq::DiscourseEvent#call'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:182:in 'Sidekiq::Middleware::Chain#traverse'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:183:in 'block in Sidekiq::Middleware::Chain#traverse'
/var/www/discourse/lib/sidekiq/pausable.rb:131:in 'Sidekiq::Pausable#call'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:182:in 'Sidekiq::Middleware::Chain#traverse'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:183:in 'block in Sidekiq::Middleware::Chain#traverse'
sidekiq-7.3.9/lib/sidekiq/job/interrupt_handler.rb:9:in 'Sidekiq::Job::InterruptHandler#call'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:182:in 'Sidekiq::Middleware::Chain#traverse'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:183:in 'block in Sidekiq::Middleware::Chain#traverse'
sidekiq-7.3.9/lib/sidekiq/metrics/tracking.rb:26:in 'Sidekiq::Metrics::ExecutionTracker#track'
sidekiq-7.3.9/lib/sidekiq/metrics/tracking.rb:134:in 'Sidekiq::Metrics::Middleware#call'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:182:in 'Sidekiq::Middleware::Chain#traverse'
sidekiq-7.3.9/lib/sidekiq/middleware/chain.rb:173:in 'Sidekiq::Middleware::Chain#invoke'
sidekiq-7.3.9/lib/sidekiq/processor.rb:184:in 'block (3 levels) in Sidekiq::Processor#process'
sidekiq-7.3.9/lib/sidekiq/processor.rb:145:in 'block (6 levels) in Sidekiq::Processor#dispatch'
sidekiq-7.3.9/lib/sidekiq/job_retry.rb:118:in 'Sidekiq::JobRetry#local'
sidekiq-7.3.9/lib/sidekiq/processor.rb:144:in 'block (5 levels) in Sidekiq::Processor#dispatch'
sidekiq-7.3.9/lib/sidekiq/config.rb:39:in 'block in <class:Config>'
sidekiq-7.3.9/lib/sidekiq/processor.rb:139:in 'block (4 levels) in Sidekiq::Processor#dispatch'
sidekiq-7.3.9/lib/sidekiq/processor.rb:281:in 'Sidekiq::Processor#stats'
sidekiq-7.3.9/lib/sidekiq/processor.rb:134:in 'block (3 levels) in Sidekiq::Processor#dispatch'
sidekiq-7.3.9/lib/sidekiq/job_logger.rb:15:in 'Sidekiq::JobLogger#call'
sidekiq-7.3.9/lib/sidekiq/processor.rb:133:in 'block (2 levels) in Sidekiq::Processor#dispatch'
sidekiq-7.3.9/lib/sidekiq/job_retry.rb:85:in 'Sidekiq::JobRetry#global'
sidekiq-7.3.9/lib/sidekiq/processor.rb:132:in 'block in Sidekiq::Processor#dispatch'
sidekiq-7.3.9/lib/sidekiq/job_logger.rb:40:in 'Sidekiq::JobLogger#prepare'
sidekiq-7.3.9/lib/sidekiq/processor.rb:131:in 'Sidekiq::Processor#dispatch'
sidekiq-7.3.9/lib/sidekiq/processor.rb:183:in 'block (2 levels) in Sidekiq::Processor#process'
sidekiq-7.3.9/lib/sidekiq/processor.rb:182:in 'Thread.handle_interrupt'
sidekiq-7.3.9/lib/sidekiq/processor.rb:182:in 'block in Sidekiq::Processor#process'
sidekiq-7.3.9/lib/sidekiq/processor.rb:181:in 'Thread.handle_interrupt'
sidekiq-7.3.9/lib/sidekiq/processor.rb:181:in 'Sidekiq::Processor#process'
sidekiq-7.3.9/lib/sidekiq/processor.rb:86:in 'Sidekiq::Processor#process_one'
sidekiq-7.3.9/lib/sidekiq/processor.rb:76:in 'Sidekiq::Processor#run'
sidekiq-7.3.9/lib/sidekiq/component.rb:10:in 'Sidekiq::Component#watchdog'
sidekiq-7.3.9/lib/sidekiq/component.rb:19:in 'block in Sidekiq::Component#safe_thread'
También estoy viendo un montón de mensajes sobre Redis:
Job exception: Connection timed out - user specified timeout: 1.0s (redis://localhost:6379)
Your Redis network connection is performing extremely poorly.
Last RTT readings were [403941, 62224, 151840, 1536008, 3440226], ideally these should be < 1000.
Ensure Redis is running in the same AZ o
Pero no sé si esto indica que Redis es la causa o simplemente un síntoma.
Acabo de ejecutar ./launcher rebuild app, y no es mejor. ¿Alguna idea sobre cómo diagnosticar qué está fallando en este servidor?
