# Mysql2::Error::ConnectionError Can't connect to MySQL server on '185.163.127.177:3306' (111) - **Location:** app/models/notification.rb:31 - **Occurred at:** 2026-06-25 14:44:31 UTC ## Backtrace ### Compact Trace ``` app/models/notification.rb:31:in `block in ' app/jobs/email_notification_job.rb:7:in `perform' ``` ### Full Trace ``` /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/mysql2-0.5.3/lib/mysql2/client.rb:90:in `connect' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/mysql2-0.5.3/lib/mysql2/client.rb:90:in `initialize' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/connection_adapters/mysql2_adapter.rb:24:in `new' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/connection_adapters/mysql2_adapter.rb:24:in `mysql2_connection' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:887:in `new_connection' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:931:in `checkout_new_connection' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:910:in `try_to_checkout_new_connection' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:871:in `acquire_connection' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:593:in `checkout' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:437:in `connection' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:1119:in `retrieve_connection' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/connection_handling.rb:221:in `retrieve_connection' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/connection_handling.rb:189:in `connection' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/delegation.rb:92:in `connection' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/query_methods.rb:1298:in `preprocess_order_args' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/query_methods.rb:364:in `order!' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/query_methods.rb:359:in `order' /var/www/oblyk/api/releases/20260616071013/app/models/notification.rb:31:in `block in ' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/scoping/default.rb:120:in `instance_exec' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/scoping/default.rb:120:in `block (2 levels) in build_default_scope' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/scoping/default.rb:118:in `each' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/scoping/default.rb:118:in `inject' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/scoping/default.rb:118:in `block in build_default_scope' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/scoping/default.rb:142:in `evaluate_default_scope' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/scoping/default.rb:117:in `build_default_scope' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/scoping/named.rb:58:in `default_scoped' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/scoping/named.rb:44:in `all' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/querying.rb:21:in `find' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/core.rb:160:in `find' /var/www/oblyk/api/releases/20260616071013/app/jobs/email_notification_job.rb:7:in `perform' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/execution.rb:40:in `block in perform_now' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:112:in `block in run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rorvswild-1.6.0/lib/rorvswild/plugin/active_job.rb:18:in `block in around_perform' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rorvswild-1.6.0/lib/rorvswild/agent.rb:71:in `measure_section' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rorvswild-1.6.0/lib/rorvswild/agent.rb:78:in `measure_job' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rorvswild-1.6.0/lib/rorvswild/plugin/active_job.rb:12:in `around_perform' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `instance_exec' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `block in run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/i18n-1.8.10/lib/i18n.rb:314:in `with_locale' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/translation.rb:9:in `block (2 levels) in ' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `instance_exec' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `block in run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/core_ext/time/zones.rb:66:in `use_zone' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/timezones.rb:9:in `block (2 levels) in ' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `instance_exec' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `block in run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/logging.rb:25:in `block (4 levels) in ' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/notifications.rb:180:in `block in instrument' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/notifications/instrumenter.rb:24:in `instrument' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/notifications.rb:180:in `instrument' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/logging.rb:24:in `block (3 levels) in ' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/logging.rb:45:in `block in tag_logger' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/tagged_logging.rb:80:in `block in tagged' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/tagged_logging.rb:28:in `tagged' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/tagged_logging.rb:80:in `tagged' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/logging.rb:45:in `tag_logger' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/logging.rb:21:in `block (2 levels) in ' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `instance_exec' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `block in run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:139:in `run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/execution.rb:39:in `perform_now' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/execution.rb:25:in `block in execute' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:112:in `block in run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/railtie.rb:43:in `block (4 levels) in ' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/execution_wrapper.rb:88:in `wrap' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/reloader.rb:72:in `block in wrap' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/execution_wrapper.rb:84:in `wrap' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/reloader.rb:71:in `wrap' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/railtie.rb:42:in `block (3 levels) in ' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `instance_exec' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `block in run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:139:in `run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/execution.rb:23:in `execute' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activejob-6.0.3.6/lib/active_job/queue_adapters/sidekiq_adapter.rb:42:in `perform' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:196:in `execute_job' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:164:in `block (2 levels) in process' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/middleware/chain.rb:138:in `block in invoke' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rorvswild-1.6.0/lib/rorvswild/agent.rb:82:in `measure_job' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rorvswild-1.6.0/lib/rorvswild/plugin/sidekiq.rb:15:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/middleware/chain.rb:140:in `block in invoke' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/middleware/chain.rb:143:in `invoke' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:163:in `block in process' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:136:in `block (6 levels) in dispatch' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/job_retry.rb:111:in `local' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:135:in `block (5 levels) in dispatch' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/rails.rb:43:in `block in call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/execution_wrapper.rb:88:in `wrap' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/reloader.rb:72:in `block in wrap' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/execution_wrapper.rb:88:in `wrap' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/reloader.rb:71:in `wrap' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/rails.rb:42:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:131:in `block (4 levels) in dispatch' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:257:in `stats' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:126:in `block (3 levels) in dispatch' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/job_logger.rb:13:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:125:in `block (2 levels) in dispatch' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/job_retry.rb:78:in `global' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:124:in `block in dispatch' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/logger.rb:10:in `with' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/job_logger.rb:33:in `prepare' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:123:in `dispatch' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:162:in `process' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:78:in `process_one' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/processor.rb:68:in `run' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/util.rb:15:in `watchdog' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/sidekiq-6.0.7/lib/sidekiq/util.rb:24:in `block in safe_thread' ``` ## Parameters ```json [ { "job_id": "155fc78e-d5f0-4943-b385-93b90dde0aac", "locale": "fr", "priority": null, "timezone": "Paris", "arguments": [ 65408 ], "job_class": "EmailNotificationJob", "executions": 0, "queue_name": "default", "enqueued_at": "2026-06-25T14:38:02Z", "provider_job_id": null, "exception_executions": {} } ] ``` ## Environment | Variable | Value | |----------|-------| | os | Linux 5.10.0-14-cloud-amd64 | | cwd | /var/www/oblyk/api/releases/20260616071013 | | pid | 1358609 | | host | oblyk-api | | ruby | ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-linux] | | user | oblyk | | rails | 6.0.3.6 | | revision | e48468c2220f49700ecd2a9dc76dbb018740404e | [View on RoRvsWild ↗](https://www.rorvswild.com/applications/135627/errors/91526048)