Fora do ar após atualização do Docker

Just tried to update Docker in the Discourse admin area. I got an error and now my site is down. I haven’t made any changes to the site recently, so I’m a little confused as to what happend. What is the best way to recover in this situation? I have automated Discourse backups saved in the cloud, should I just reinstall Discourse and load my backup or is there an easier way to fix this?

Using message_bus 3.3.2
Using mini_racer 0.3.1
Using redis 4.2.2
Using sidekiq 6.1.2
Using mini_scheduler 0.12.2
Using mini_sql 0.3
Using mini_suffix 0.3.0
Using multi_json 1.15.0
Using multi_xml 0.6.0
Using mustache 1.1.1
Using nio4r 2.5.4
Using nokogumbo 2.0.2
Using oauth 0.5.4
Using oauth2 1.4.4
Using oj 3.10.14
Using omniauth 1.9.1
Using omniauth-oauth2 1.7.0
Using omniauth-facebook 7.0.0
Using omniauth-github 1.4.0
Using omniauth-google-oauth2 0.8.0
Using omniauth-instagram 1.3.0
Using omniauth-oauth 1.1.0
Using omniauth-twitter 1.4.0
Using sanitize 5.2.1
Using onebox 2.1.3
Using optimist 3.0.1
Using pg 1.2.3
Using pry 0.13.1
Using pry-byebug 3.9.0
Using pry-rails 0.3.9
Using puma 5.0.2
Using r2 0.2.7
Using rack-mini-profiler 2.1.0
Using rack-protection 2.1.0
Using rails_failover 0.5.7
Using rails_multisite 2.5.0
Using raindrops 0.19.1
Using rbtrace 0.4.14
Using rchardet 1.8.0
Using redis-namespace 1.8.0
Using rinku 2.0.6
Using rotp 6.2.0
Using rqrcode_core 0.1.2
Using rqrcode 1.1.2
Using rtlit 0.0.5
Using ruby-readability 0.7.0
Using rubyzip 2.3.0
Using sassc 2.0.1
Using sprockets-rails 3.2.2
Using tilt 2.0.10
Using sassc-rails 2.1.2
Using seed-fu 2.3.9
Using sshkey 2.0.0
Using stackprof 0.2.15
Using uglifier 4.2.0
Using unf_ext 0.0.7.7
Using unf 0.1.4
Using unicorn 5.7.0
Using webpush 1.0.0
Using xorcist 1.1.2
Bundle complete! 124 Gemfile dependencies, 161 gems now installed.
Gems in the groups test and development were not installed.
Bundled gems are installed into `./vendor/bundle`
$ bundle exec rake plugin:pull_compatible_all
discourse-locations is already at latest compatible version
discourse-ratings is already at latest compatible version
discourse-topic-previews is already at latest compatible version
discourse-affiliate is already at latest compatible version
discourse-adplugin is already at latest compatible version
discourse-akismet is already at latest compatible version
discourse-subscriptions is already at latest compatible version
discourse-sitemap is already at latest compatible version
docker_manager is already at latest compatible version
$ SKIP_POST_DEPLOYMENT_MIGRATIONS=1 bundle exec rake multisite:migrate
Multisite migrator is running using 1 threads

Migrating default
Seeding default
*** Bundling assets. This will take a while *** 
$ RUBY_GC_MALLOC_LIMIT_MAX=20971520 RUBY_GC_OLDMALLOC_LIMIT_MAX=20971520 RUBY_GC_HEAP_GROWTH_MAX_SLOTS=50000 RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR=0.9  bundle exec rake assets:precompile
Purging temp files
Bundling assets
I, [2020-11-06T00:16:24.441035 #2323256]  INFO -- : Writing /var/www/discourse/public/assets/locales/ro-eca9e9f1db0dabc6cc21151ac965087420e53357ffe195d0ce0857f74e4c59b3.js
Killed
Docker Manager: FAILED TO UPGRADE
#<RuntimeError: RuntimeError>
/var/www/discourse/plugins/docker_manager/lib/docker_manager/upgrader.rb:178:in `run'
/var/www/discourse/plugins/docker_manager/lib/docker_manager/upgrader.rb:86:in `upgrade'
/var/www/discourse/plugins/docker_manager/app/controllers/docker_manager/admin_controller.rb:95:in `block in upgrade'
/var/www/discourse/plugins/docker_manager/app/controllers/docker_manager/admin_controller.rb:91:in `fork'
/var/www/discourse/plugins/docker_manager/app/controllers/docker_manager/admin_controller.rb:91:in `upgrade'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/abstract_controller/base.rb:195:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/rendering.rb:30:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/abstract_controller/callbacks.rb:42:in `block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.3.3/lib/active_support/callbacks.rb:135:in `run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/abstract_controller/callbacks.rb:41:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/rescue.rb:22:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/instrumentation.rb:33:in `block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.3.3/lib/active_support/notifications.rb:180:in `block in instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.3.3/lib/active_support/notifications/instrumenter.rb:24:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.3.3/lib/active_support/notifications.rb:180:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/instrumentation.rb:32:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/params_wrapper.rb:245:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.3.3/lib/active_record/railties/controller_runtime.rb:27:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/abstract_controller/base.rb:136:in `process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionview-6.0.3.3/lib/action_view/rendering.rb:39:in `process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-2.1.0/lib/mini_profiler/profiling_methods.rb:78:in `block in profile_method'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal.rb:190:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal.rb:254:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/route_set.rb:50:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/route_set.rb:33:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/mapper.rb:18:in `block in <class:Constraints>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/mapper.rb:48:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:49:in `block in serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:32:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:32:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/route_set.rb:834:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/engine.rb:527:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/railtie.rb:190:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/railtie.rb:190:in `method_missing'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/mapper.rb:19:in `block in <class:Constraints>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/mapper.rb:48:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:49:in `block in serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:32:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:32:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/route_set.rb:834:in `call'
/var/www/discourse/lib/middleware/omniauth_bypass_middleware.rb:68:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/tempfile_reaper.rb:15:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/conditional_get.rb:40:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/head.rb:12:in `call'
/var/www/discourse/lib/content_security_policy/middleware.rb:12:in `call'
/var/www/discourse/lib/middleware/anonymous_cache.rb:336:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/session/abstract/id.rb:266:in `context'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/session/abstract/id.rb:260:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/cookies.rb:648:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/callbacks.rb:27:in `block in call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.3.3/lib/active_support/callbacks.rb:101:in `run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/callbacks.rb:26:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/actionable_exceptions.rb:17:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/debug_exceptions.rb:32:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/show_exceptions.rb:33:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/logster-2.9.4/lib/logster/middleware/reporter.rb:43:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/rack/logger.rb:37:in `call_app'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/rack/logger.rb:28:in `call'
/var/www/discourse/config/initializers/100-quiet_logger.rb:23:in `call'
/var/www/discourse/config/initializers/100-silence_logger.rb:31:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/remote_ip.rb:81:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/request_id.rb:27:in `call'
/var/www/discourse/lib/middleware/enforce_hostname.rb:22:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/method_override.rb:24:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/executor.rb:14:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/sendfile.rb:110:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/host_authorization.rb:76:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-2.1.0/lib/mini_profiler/profiler.rb:235:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/message_bus-3.3.2/lib/message_bus/rack/middleware.rb:61:in `call'
/var/www/discourse/lib/middleware/request_tracker.rb:176:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/engine.rb:527:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/railtie.rb:190:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/railtie.rb:190:in `method_missing'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/urlmap.rb:74:in `block in call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/urlmap.rb:58:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/urlmap.rb:58:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.7.0/lib/unicorn/http_server.rb:632:in `process_client'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.7.0/lib/unicorn/http_server.rb:728:in `worker_loop'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.7.0/lib/unicorn/http_server.rb:548:in `spawn_missing_workers'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.7.0/lib/unicorn/http_server.rb:144:in `start'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.7.0/bin/unicorn:128:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/bin/unicorn:23:in `load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/bin/unicorn:23:in `<main>'
Spinning up 1 Unicorn worker(s) that were stopped initially
********************************************************
*** Please be patient, next steps might take a while ***
********************************************************
ABORTING, you do not have enough unicorn workers running
Docker Manager: FAILED TO UPGRADE
#<RuntimeError: Not enough workers>
/var/www/discourse/plugins/docker_manager/lib/docker_manager/upgrader.rb:40:in `upgrade'
/var/www/discourse/plugins/docker_manager/app/controllers/docker_manager/admin_controller.rb:95:in `block in upgrade'
/var/www/discourse/plugins/docker_manager/app/controllers/docker_manager/admin_controller.rb:91:in `fork'
/var/www/discourse/plugins/docker_manager/app/controllers/docker_manager/admin_controller.rb:91:in `upgrade'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/abstract_controller/base.rb:195:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/rendering.rb:30:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/abstract_controller/callbacks.rb:42:in `block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.3.3/lib/active_support/callbacks.rb:135:in `run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/abstract_controller/callbacks.rb:41:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/rescue.rb:22:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/instrumentation.rb:33:in `block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.3.3/lib/active_support/notifications.rb:180:in `block in instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.3.3/lib/active_support/notifications/instrumenter.rb:24:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.3.3/lib/active_support/notifications.rb:180:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/instrumentation.rb:32:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal/params_wrapper.rb:245:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.3.3/lib/active_record/railties/controller_runtime.rb:27:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/abstract_controller/base.rb:136:in `process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionview-6.0.3.3/lib/action_view/rendering.rb:39:in `process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-2.1.0/lib/mini_profiler/profiling_methods.rb:78:in `block in profile_method'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal.rb:190:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_controller/metal.rb:254:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/route_set.rb:50:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/route_set.rb:33:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/mapper.rb:18:in `block in <class:Constraints>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/mapper.rb:48:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:49:in `block in serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:32:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:32:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/route_set.rb:834:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/engine.rb:527:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/railtie.rb:190:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/railtie.rb:190:in `method_missing'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/mapper.rb:19:in `block in <class:Constraints>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/mapper.rb:48:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:49:in `block in serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:32:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/journey/router.rb:32:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/routing/route_set.rb:834:in `call'
/var/www/discourse/lib/middleware/omniauth_bypass_middleware.rb:68:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/tempfile_reaper.rb:15:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/conditional_get.rb:40:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/head.rb:12:in `call'
/var/www/discourse/lib/content_security_policy/middleware.rb:12:in `call'
/var/www/discourse/lib/middleware/anonymous_cache.rb:336:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/session/abstract/id.rb:266:in `context'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/session/abstract/id.rb:260:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/cookies.rb:648:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/callbacks.rb:27:in `block in call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.3.3/lib/active_support/callbacks.rb:101:in `run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/callbacks.rb:26:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/actionable_exceptions.rb:17:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/debug_exceptions.rb:32:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/show_exceptions.rb:33:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/logster-2.9.4/lib/logster/middleware/reporter.rb:43:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/rack/logger.rb:37:in `call_app'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/rack/logger.rb:28:in `call'
/var/www/discourse/config/initializers/100-quiet_logger.rb:23:in `call'
/var/www/discourse/config/initializers/100-silence_logger.rb:31:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/remote_ip.rb:81:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/request_id.rb:27:in `call'
/var/www/discourse/lib/middleware/enforce_hostname.rb:22:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/method_override.rb:24:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/executor.rb:14:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/sendfile.rb:110:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.3/lib/action_dispatch/middleware/host_authorization.rb:76:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-2.1.0/lib/mini_profiler/profiler.rb:235:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/message_bus-3.3.2/lib/message_bus/rack/middleware.rb:61:in `call'
/var/www/discourse/lib/middleware/request_tracker.rb:176:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/engine.rb:527:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/railtie.rb:190:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.3.3/lib/rails/railtie.rb:190:in `method_missing'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/urlmap.rb:74:in `block in call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/urlmap.rb:58:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/urlmap.rb:58:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.7.0/lib/unicorn/http_server.rb:632:in `process_client'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.7.0/lib/unicorn/http_server.rb:728:in `worker_loop'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.7.0/lib/unicorn/http_server.rb:548:in `spawn_missing_workers'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.7.0/lib/unicorn/http_server.rb:562:in `maintain_worker_count'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.7.0/lib/unicorn/http_server.rb:295:in `join'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.7.0/bin/unicorn:128:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/bin/unicorn:23:in `load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/bin/unicorn:23:in `<main>'

Suspeito fortemente que você ficou sem memória aqui. Tente aumentar o tamanho da instância ou adicionar algum swap.

Tente atualizar primeiro pelo console:

Definitivamente, estamos vendo vários problemas de suporte relacionados a processos “killed” por falta de memória devido às últimas alterações no Docker Manager em relação ao forking, @sam. Como você quer lidar com isso?

Ah, eu deveria ter pensado nisso. Acabei de reconstruir e meu site voltou ao ar, obrigado!

cd /var/discourse
./launcher rebuild app

Talvez sim, mas nunca tive esse problema antes. Tenho esse site há mais de um ano com 1024 MB de memória.

Verifique o dmesg para ver se o oom-killer foi acionado; isso lhe dará certeza.

Que tal tornarmos o novo comportamento de atualização controlado por uma variável de ambiente, definida pelo ./discourse-setup para sistemas com >3GB de RAM?

templates/web.template.yml:
env:
  DISCOURSE_GRACEFUL_UPGRADE: false

containers/app.yml:
env:
  # Defina como true em sistemas com pelo menos 3GB de RAM.
  DISCOURSE_GRACEFUL_UPGRADE: false