Missing setting 'admin' in 'pages' section

Summary

We are using 12.6.x (I think, or maybe 12.7.x), and today I want to upgrade to 13.

After uninstall 12 -> install 13, GitLab show a 502 error.

Steps to reproduce

Upgrade from 12.6.x

Example Project

None

What is the current bug behavior?

GitLab CE 502.

Log mainly output MissingSetting: Missing setting 'admin' in 'pages' section in /opt/gitlab/embedded/service/gitlab-rails/config/gitlab.yml.

What is the expected correct behavior?

It will work.

Relevant logs and/or screenshots

==> /var/log/gitlab/gitlab-rails/sidekiq.log <==
Missing setting 'admin' in 'pages' section in /opt/gitlab/embedded/service/gitlab-rails/config/gitlab.yml
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/settingslogic-2.0.9/lib/settingslogic.rb:189:in `missing_key'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/settingslogic-2.0.9/lib/settingslogic.rb:117:in `method_missing'
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:94:in `config'
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:29:in `load_certificate'
/opt/gitlab/embedded/service/gitlab-rails/config/initializers/pages.rb:2:in `<top (required)>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:318:in `load'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:318:in `block in load'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:291:in `load_dependency'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:318:in `load'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:666:in `block in load_config_initializer'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/notifications.rb:182:in `instrument'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:665:in `load_config_initializer'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:625:in `block (2 levels) in <class:Engine>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:624:in `each'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:624:in `block in <class:Engine>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:32:in `instance_exec'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:32:in `run'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:61:in `block in run_initializers'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:228:in `block in tsort_each'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:422:in `block (2 levels) in each_strongly_connected_component_from'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:431:in `each_strongly_connected_component_from'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:421:in `block in each_strongly_connected_component_from'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:50:in `each'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:50:in `tsort_each_child'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:415:in `call'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:415:in `each_strongly_connected_component_from'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:349:in `block in each_strongly_connected_component'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:347:in `each'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:347:in `call'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:347:in `each_strongly_connected_component'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:226:in `tsort_each'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:205:in `tsort_each'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:60:in `run_initializers'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/application.rb:363:in `initialize!'
/opt/gitlab/embedded/service/gitlab-rails/config/environment.rb:5:in `<top (required)>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:324:in `require'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:324:in `block in require'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:291:in `load_dependency'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:324:in `require'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/sidekiq-5.2.7/lib/sidekiq/cli.rb:288:in `boot_system'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/sidekiq-5.2.7/lib/sidekiq/cli.rb:46:in `run'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/sidekiq-5.2.7/bin/sidekiq:12:in `<top (required)>'
/opt/gitlab/embedded/bin/sidekiq:23:in `load'
/opt/gitlab/embedded/bin/sidekiq:23:in `<top (required)>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:74:in `load'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:74:in `kernel_load'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:28:in `run'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli.rb:463:in `exec'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor.rb:387:in `dispatch'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli.rb:27:in `dispatch'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/base.rb:466:in `start'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli.rb:18:in `start'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/exe/bundle:30:in `block in <top (required)>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/friendly_errors.rb:124:in `with_friendly_errors'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/exe/bundle:22:in `<top (required)>'
/opt/gitlab/embedded/bin/bundle:23:in `load'
/opt/gitlab/embedded/bin/bundle:23:in `<main>'

==> /var/log/gitlab/puma/current <==
2020-06-01_13:47:22.97301 {"timestamp":"2020-06-01T13:47:22.972Z","pid":26998,"message":"! Unable to load application: Settingslogic::MissingSetting: Missing setting 'admin' in 'pages' section in /opt/gitlab/embedded/service/gitlab-rails/config/gitlab.yml"}
2020-06-01_13:47:22.97312 bundler: failed to load command: puma (/opt/gitlab/embedded/bin/puma)
2020-06-01_13:47:22.97319 Settingslogic::MissingSetting: Missing setting 'admin' in 'pages' section in /opt/gitlab/embedded/service/gitlab-rails/config/gitlab.yml
2020-06-01_13:47:22.97319   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/settingslogic-2.0.9/lib/settingslogic.rb:189:in `missing_key'
2020-06-01_13:47:22.97320   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/settingslogic-2.0.9/lib/settingslogic.rb:117:in `method_missing'
2020-06-01_13:47:22.97320   /opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:94:in `config'
2020-06-01_13:47:22.97320   /opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:29:in `load_certificate'
2020-06-01_13:47:22.97320   /opt/gitlab/embedded/service/gitlab-rails/config/initializers/pages.rb:2:in `<top (required)>'
2020-06-01_13:47:22.97321   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:318:in `load'
2020-06-01_13:47:22.97321   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:318:in `block in load'
2020-06-01_13:47:22.97321   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:291:in `load_dependency'
2020-06-01_13:47:22.97321   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:318:in `load'
2020-06-01_13:47:22.97322   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:666:in `block in load_config_initializer'
2020-06-01_13:47:22.97322   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/notifications.rb:182:in `instrument'
2020-06-01_13:47:22.97323   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:665:in `load_config_initializer'
2020-06-01_13:47:22.97323   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:625:in `block (2 levels) in <class:Engine>'
2020-06-01_13:47:22.97323   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:624:in `each'
2020-06-01_13:47:22.97325   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:624:in `block in <class:Engine>'
2020-06-01_13:47:22.97325   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:32:in `instance_exec'
2020-06-01_13:47:22.97325   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:32:in `run'
2020-06-01_13:47:22.97325   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:61:in `block in run_initializers'
2020-06-01_13:47:22.97326   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:228:in `block in tsort_each'
2020-06-01_13:47:22.97327   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
2020-06-01_13:47:22.97327   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:422:in `block (2 levels) in each_strongly_connected_component_from'
2020-06-01_13:47:22.97327   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:431:in `each_strongly_connected_component_from'
2020-06-01_13:47:22.97327   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:421:in `block in each_strongly_connected_component_from'
2020-06-01_13:47:22.97328   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:50:in `each'
2020-06-01_13:47:22.97328   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:50:in `tsort_each_child'
2020-06-01_13:47:22.97328   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:415:in `call'
2020-06-01_13:47:22.97328   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:415:in `each_strongly_connected_component_from'
2020-06-01_13:47:22.97328   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:349:in `block in each_strongly_connected_component'
2020-06-01_13:47:22.97330   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:347:in `each'
2020-06-01_13:47:22.97330   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:347:in `call'
2020-06-01_13:47:22.97330   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:347:in `each_strongly_connected_component'
2020-06-01_13:47:22.97331   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:226:in `tsort_each'
2020-06-01_13:47:22.97331   /opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:205:in `tsort_each'
2020-06-01_13:47:22.97332   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:60:in `run_initializers'
2020-06-01_13:47:22.97332   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/application.rb:363:in `initialize!'
2020-06-01_13:47:22.97333   /opt/gitlab/embedded/service/gitlab-rails/config/environment.rb:5:in `<top (required)>'
2020-06-01_13:47:22.97333   /opt/gitlab/embedded/service/gitlab-rails/config.ru:18:in `require'
2020-06-01_13:47:22.97333   /opt/gitlab/embedded/service/gitlab-rails/config.ru:18:in `block in <main>'
2020-06-01_13:47:22.97334   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/rack-2.0.9/lib/rack/builder.rb:55:in `instance_eval'
2020-06-01_13:47:22.97334   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/rack-2.0.9/lib/rack/builder.rb:55:in `initialize'
2020-06-01_13:47:22.97336   /opt/gitlab/embedded/service/gitlab-rails/config.ru:in `new'
2020-06-01_13:47:22.97336   /opt/gitlab/embedded/service/gitlab-rails/config.ru:in `<main>'
2020-06-01_13:47:22.97337   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/rack-2.0.9/lib/rack/builder.rb:49:in `eval'
2020-06-01_13:47:22.97337   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/rack-2.0.9/lib/rack/builder.rb:49:in `new_from_string'
2020-06-01_13:47:22.97337   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/rack-2.0.9/lib/rack/builder.rb:40:in `parse_file'
2020-06-01_13:47:22.97338   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/gitlab-puma-4.3.3.gitlab.2/lib/puma/configuration.rb:321:in `load_rackup'
2020-06-01_13:47:22.97338   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/gitlab-puma-4.3.3.gitlab.2/lib/puma/configuration.rb:246:in `app'
2020-06-01_13:47:22.97339   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/gitlab-puma-4.3.3.gitlab.2/lib/puma/runner.rb:155:in `load_and_bind'
2020-06-01_13:47:22.97340   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/gitlab-puma-4.3.3.gitlab.2/lib/puma/cluster.rb:413:in `run'
2020-06-01_13:47:22.97340   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/gitlab-puma-4.3.3.gitlab.2/lib/puma/launcher.rb:172:in `run'
2020-06-01_13:47:22.97342   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/gitlab-puma-4.3.3.gitlab.2/lib/puma/cli.rb:80:in `run'
2020-06-01_13:47:22.97343   /opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/gitlab-puma-4.3.3.gitlab.2/bin/puma:10:in `<top (required)>'
2020-06-01_13:47:22.97343   /opt/gitlab/embedded/bin/puma:23:in `load'
2020-06-01_13:47:22.97343   /opt/gitlab/embedded/bin/puma:23:in `<top (required)>'
2020-06-01_13:47:23.83238 {"timestamp":"2020-06-01T13:47:23.832Z","pid":27041,"message":"Puma starting in cluster mode..."}
2020-06-01_13:47:23.83241 {"timestamp":"2020-06-01T13:47:23.832Z","pid":27041,"message":"* Version 4.3.3.gitlab.2 (ruby 2.6.6-p146), codename: Mysterious Traveller"}
2020-06-01_13:47:23.83242 {"timestamp":"2020-06-01T13:47:23.832Z","pid":27041,"message":"* Min threads: 4, max threads: 4"}
2020-06-01_13:47:23.83244 {"timestamp":"2020-06-01T13:47:23.832Z","pid":27041,"message":"* Environment: production"}
2020-06-01_13:47:23.83246 {"timestamp":"2020-06-01T13:47:23.832Z","pid":27041,"message":"* Process workers: 8"}
2020-06-01_13:47:23.83248 {"timestamp":"2020-06-01T13:47:23.832Z","pid":27041,"message":"* Preloading application"}

==> /var/log/gitlab/sidekiq/current <==
Missing setting 'admin' in 'pages' section in /opt/gitlab/embedded/service/gitlab-rails/config/gitlab.yml
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/settingslogic-2.0.9/lib/settingslogic.rb:189:in `missing_key'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/settingslogic-2.0.9/lib/settingslogic.rb:117:in `method_missing'
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:94:in `config'
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:29:in `load_certificate'
/opt/gitlab/embedded/service/gitlab-rails/config/initializers/pages.rb:2:in `<top (required)>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:318:in `load'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:318:in `block in load'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:291:in `load_dependency'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:318:in `load'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:666:in `block in load_config_initializer'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/notifications.rb:182:in `instrument'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:665:in `load_config_initializer'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:625:in `block (2 levels) in <class:Engine>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:624:in `each'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/engine.rb:624:in `block in <class:Engine>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:32:in `instance_exec'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:32:in `run'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:61:in `block in run_initializers'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:228:in `block in tsort_each'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:422:in `block (2 levels) in each_strongly_connected_component_from'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:431:in `each_strongly_connected_component_from'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:421:in `block in each_strongly_connected_component_from'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:50:in `each'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:50:in `tsort_each_child'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:415:in `call'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:415:in `each_strongly_connected_component_from'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:349:in `block in each_strongly_connected_component'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:347:in `each'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:347:in `call'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:347:in `each_strongly_connected_component'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:226:in `tsort_each'
/opt/gitlab/embedded/lib/ruby/2.6.0/tsort.rb:205:in `tsort_each'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/initializable.rb:60:in `run_initializers'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/railties-6.0.3/lib/rails/application.rb:363:in `initialize!'
/opt/gitlab/embedded/service/gitlab-rails/config/environment.rb:5:in `<top (required)>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:324:in `require'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:324:in `block in require'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:291:in `load_dependency'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:324:in `require'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/sidekiq-5.2.7/lib/sidekiq/cli.rb:288:in `boot_system'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/sidekiq-5.2.7/lib/sidekiq/cli.rb:46:in `run'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/sidekiq-5.2.7/bin/sidekiq:12:in `<top (required)>'
/opt/gitlab/embedded/bin/sidekiq:23:in `load'
/opt/gitlab/embedded/bin/sidekiq:23:in `<top (required)>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:74:in `load'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:74:in `kernel_load'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:28:in `run'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli.rb:463:in `exec'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor.rb:387:in `dispatch'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli.rb:27:in `dispatch'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/base.rb:466:in `start'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli.rb:18:in `start'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/exe/bundle:30:in `block in <top (required)>'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/friendly_errors.rb:124:in `with_friendly_errors'
/opt/gitlab/embedded/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/exe/bundle:22:in `<top (required)>'
/opt/gitlab/embedded/bin/bundle:23:in `load'
/opt/gitlab/embedded/bin/bundle:23:in `<main>'

Output of checks

rake aborted!
Settingslogic::MissingSetting: Missing setting 'admin' in 'pages' section in /opt/gitlab/embedded/service/gitlab-rails/config/gitlab.yml
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:94:in `config'
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:29:in `load_certificate'
/opt/gitlab/embedded/service/gitlab-rails/config/initializers/pages.rb:2:in `<top (required)>'
/opt/gitlab/embedded/service/gitlab-rails/config/environment.rb:5:in `<top (required)>'
/opt/gitlab/embedded/bin/bundle:23:in `load'
/opt/gitlab/embedded/bin/bundle:23:in `<main>'
Tasks: TOP => gitlab:check => gitlab_environment => environment
(See full trace by running task with --trace)

Results of GitLab environment info

Expand for output related to GitLab environment info

rake aborted!
Settingslogic::MissingSetting: Missing setting 'admin' in 'pages' section in /opt/gitlab/embedded/service/gitlab-rails/config/gitlab.yml
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:94:in `config'
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:29:in `load_certificate'
/opt/gitlab/embedded/service/gitlab-rails/config/initializers/pages.rb:2:in `'
/opt/gitlab/embedded/service/gitlab-rails/config/environment.rb:5:in `'
/opt/gitlab/embedded/bin/bundle:23:in `load'
/opt/gitlab/embedded/bin/bundle:23:in `'
Tasks: TOP => gitlab:env:info => gitlab_environment => environment
(See full trace by running task with --trace)

Results of GitLab application Check

Expand for output related to the GitLab application check

rake aborted!
Settingslogic::MissingSetting: Missing setting 'admin' in 'pages' section in /opt/gitlab/embedded/service/gitlab-rails/config/gitlab.yml
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:94:in config' /opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/pages_client.rb:29:in load_certificate'
/opt/gitlab/embedded/service/gitlab-rails/config/initializers/pages.rb:2:in <top (required)>' /opt/gitlab/embedded/service/gitlab-rails/config/environment.rb:5:in <top (required)>'
/opt/gitlab/embedded/bin/bundle:23:in load' /opt/gitlab/embedded/bin/bundle:23:in '
Tasks: TOP => gitlab:check => gitlab_environment => environment
(See full trace by running task with --trace)

Possible fixes

I can't find pages_client.rb in the source code...

mentioned in issue gitlab-org/quality/triage-reports#151 (closed)

mentioned in issue gitlab-org/quality/triage-reports#152 (closed)

added Category:Omnibus Package devopssystems groupdistribution labels

added priority2 severity2 typebug labels

More details in omnibus-gitlab#5406 (closed), but I fixed it.

Still don't understand why this error shows up, and why automatic database backup failed when the service is up.

mentioned in issue #220741 (closed)

mentioned in issue #222242 (closed)

mentioned in issue #223664 (closed)

mentioned in issue #225141 (closed)

mentioned in issue #226969 (closed)

mentioned in issue #230666 (closed)

mentioned in issue #232389 (closed)

mentioned in issue #233343 (closed)

added SLOMissed label

mentioned in issue #235098 (closed)

mentioned in issue #237836 (closed)

mentioned in issue #240867 (closed)

mentioned in issue #243480 (closed)

added sectioncore platform label

mentioned in issue #246472 (closed)

mentioned in issue #249074 (closed)

mentioned in issue #254175 (closed)

removed SLOMissed label

added SLOMissed label

mentioned in issue #257800 (closed)

mentioned in issue #262006 (closed)

mentioned in issue gitlab-org/quality/triage-reports#503 (closed)

mentioned in issue gitlab-org/quality/triage-reports#561 (closed)

mentioned in issue gitlab-org/quality/triage-reports#637 (closed)

mentioned in issue gitlab-org/quality/triage-reports#702 (closed)

mentioned in issue gitlab-org/quality/triage-reports#735 (closed)

mentioned in issue gitlab-org/quality/triage-reports#823 (closed)

mentioned in issue gitlab-org/quality/triage-reports#864 (closed)

mentioned in issue gitlab-org/quality/triage-reports#935 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1013 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1094 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1200 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1251 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1362 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1400 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1526 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1561 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1674 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1776 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1862 (closed)

mentioned in issue gitlab-org/quality/triage-reports#1972 (closed)

mentioned in issue gitlab-org/quality/triage-reports#2052 (closed)

mentioned in issue gitlab-org/quality/triage-reports#2135 (closed)

mentioned in issue gitlab-org/quality/triage-reports#2198 (closed)

mentioned in issue gitlab-org/quality/triage-reports#2302 (closed)

closed

Closing as this has been fixed: #219750 (comment 356293128)