Unknown class Trend, ignoring

Support
1

Problem:
I have noticed this error in production.log of my main foreman server. It seems to come 9 times twice an hour at minutes 00 and 30. I does not seem to affect the system.

Expected outcome:
No errors.

Foreman and Proxy versions:
Foreman 3.1.2, Katello 4.3.1

Distribution and version:
CentOS 7.9

Other relevant data:

2022-04-19T14:30:09 [W|app|] unknown class Trend, ignoring
2022-04-19T14:30:09 [I|app|] Backtrace for 'unknown class Trend, ignoring' error (NameError): uninitialized constant Trend
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/inflector/methods.rb:282:in `const_get'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/inflector/methods.rb:282:in `block in constantize'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/inflector/methods.rb:280:in `each'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/inflector/methods.rb:280:in `inject'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/inflector/methods.rb:280:in `constantize'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/core_ext/string/inflections.rb:68:in `constantize'
 | /usr/share/foreman/app/models/filter.rb:85:in `get_resource_class'
 | /usr/share/foreman/app/models/filter.rb:117:in `resource_class'
 | /usr/share/foreman/app/models/filter.rb:124:in `granular?'
 | /usr/share/foreman/app/models/filter.rb:135:in `resource_taxable_by_organization?'
 | /usr/share/foreman/app/models/filter.rb:181:in `build_taxonomy_search_string'
 | /usr/share/foreman/app/models/filter.rb:173:in `build_taxonomy_search'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:428:in `block in make_lambda'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:200:in `block (2 levels) in halting'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:605:in `block (2 levels) in default_terminator'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:604:in `catch'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:604:in `block in default_terminator'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:201:in `block in halting'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:513:in `block in invoke_before'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:513:in `each'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:513:in `invoke_before'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:134:in `run_callbacks'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:825:in `_run_validation_callbacks'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activemodel-6.0.3.7/lib/active_model/validations/callbacks.rb:117:in `run_validations!'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activemodel-6.0.3.7/lib/active_model/validations.rb:337:in `valid?'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/validations.rb:68:in `valid?'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/validations.rb:84:in `perform_validations'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/validations.rb:47:in `save'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/transactions.rb:314:in `block in save'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/transactions.rb:375:in `block in with_transaction_returning_status'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/connection_adapters/abstract/database_statements.rb:278:in `transaction'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/transactions.rb:212:in `transaction'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/transactions.rb:366:in `with_transaction_returning_status'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/transactions.rb:314:in `save'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/suppressor.rb:44:in `save'
 | /usr/share/foreman/app/models/role.rb:279:in `block in sync_inheriting_filters'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/relation/batches.rb:70:in `block (2 levels) in find_each'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/relation/batches.rb:70:in `each'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/relation/batches.rb:70:in `block in find_each'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/relation/batches.rb:136:in `block in find_in_batches'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/relation/batches.rb:238:in `block in in_batches'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/relation/batches.rb:222:in `loop'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/relation/batches.rb:222:in `in_batches'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/relation/batches.rb:135:in `find_in_batches'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/relation/batches.rb:69:in `find_each'
 | /usr/share/foreman/app/models/role.rb:278:in `sync_inheriting_filters'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:428:in `block in make_lambda'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:238:in `block in halting_and_conditional'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:517:in `block in invoke_after'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:517:in `each'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:517:in `invoke_after'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:136:in `run_callbacks'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:825:in `_run_save_callbacks'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/callbacks.rb:327:in `create_or_update'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/timestamp.rb:128:in `create_or_update'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/persistence.rb:503:in `save!'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/validations.rb:53:in `save!'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/transactions.rb:318:in `block in save!'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/transactions.rb:375:in `block in with_transaction_returning_status'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/connection_adapters/abstract/database_statements.rb:280:in `block in transaction'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/connection_adapters/abstract/transaction.rb:280:in `block in within_new_transaction'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/concurrency/load_interlock_aware_monitor.rb:26:in `block (2 levels) in synchronize'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/concurrency/load_interlock_aware_monitor.rb:25:in `handle_interrupt'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/concurrency/load_interlock_aware_monitor.rb:25:in `block in synchronize'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/concurrency/load_interlock_aware_monitor.rb:21:in `handle_interrupt'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activesupport-6.0.3.7/lib/active_support/concurrency/load_interlock_aware_monitor.rb:21:in `synchronize'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/connection_adapters/abstract/transaction.rb:278:in `within_new_transaction'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/connection_adapters/abstract/database_statements.rb:280:in `transaction'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/transactions.rb:212:in `transaction'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/transactions.rb:366:in `with_transaction_returning_status'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/transactions.rb:318:in `save!'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/activerecord-6.0.3.7/lib/active_record/suppressor.rb:48:in `save!'
 | /usr/share/foreman/app/models/role.rb:209:in `add_permissions!'
 | /usr/share/foreman/app/registries/foreman/plugin/rbac_support.rb:102:in `block (3 levels) in include_permissions_for_role'
 | /usr/share/foreman/app/models/concerns/authorizable.rb:103:in `skip_permission_check'
 | /usr/share/foreman/app/registries/foreman/plugin/rbac_support.rb:101:in `block (2 levels) in include_permissions_for_role'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/audited-4.9.0/lib/audited/auditor.rb:376:in `without_auditing'
 | /usr/share/foreman/app/registries/foreman/plugin/rbac_support.rb:98:in `block in include_permissions_for_role'
 | /usr/share/foreman/app/models/role.rb:237:in `ignore_locking'
 | /usr/share/foreman/app/registries/foreman/plugin/rbac_support.rb:97:in `include_permissions_for_role'
 | /usr/share/foreman/app/registries/foreman/plugin/rbac_support.rb:36:in `block in add_permissions_to_default_roles'
 | /usr/share/foreman/app/registries/foreman/plugin/rbac_support.rb:32:in `each'
 | /usr/share/foreman/app/registries/foreman/plugin/rbac_support.rb:32:in `add_permissions_to_default_roles'
 | /usr/share/foreman/app/registries/foreman/plugin.rb:403:in `block (2 levels) in add_permissions_to_default_roles'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/audited-4.9.0/lib/audited/auditor.rb:376:in `without_auditing'
 | /usr/share/foreman/app/registries/foreman/plugin.rb:402:in `block in add_permissions_to_default_roles'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/audited-4.9.0/lib/audited/auditor.rb:376:in `without_auditing'
 | /usr/share/foreman/app/registries/foreman/plugin.rb:401:in `add_permissions_to_default_roles'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/foreman_remote_execution-5.0.5/lib/foreman_remote_execution/engine.rb:218:in `block (2 levels) in <class:Engine>'
 | /usr/share/foreman/app/registries/foreman/plugin.rb:107:in `instance_eval'
 | /usr/share/foreman/app/registries/foreman/plugin.rb:107:in `register'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/foreman_remote_execution-5.0.5/lib/foreman_remote_execution/engine.rb:49:in `block in <class:Engine>'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/railties-6.0.3.7/lib/rails/initializable.rb:32:in `instance_exec'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/railties-6.0.3.7/lib/rails/initializable.rb:32:in `run'
 | /usr/share/foreman/config/initializers/0_print_time_spent.rb:45:in `block in run'
 | /usr/share/foreman/config/initializers/0_print_time_spent.rb:17:in `benchmark'
 | /usr/share/foreman/config/initializers/0_print_time_spent.rb:45:in `run'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/railties-6.0.3.7/lib/rails/initializable.rb:61:in `block in run_initializers'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:228:in `block in tsort_each'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:422:in `block (2 levels) in each_strongly_connected_component_from'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:431:in `each_strongly_connected_component_from'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:421:in `block in each_strongly_connected_component_from'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/railties-6.0.3.7/lib/rails/initializable.rb:50:in `each'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/railties-6.0.3.7/lib/rails/initializable.rb:50:in `tsort_each_child'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:415:in `call'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:415:in `each_strongly_connected_component_from'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:349:in `block in each_strongly_connected_component'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:347:in `each'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:347:in `call'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:347:in `each_strongly_connected_component'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:226:in `tsort_each'
 | /opt/rh/rh-ruby27/root/usr/share/ruby/tsort.rb:205:in `tsort_each'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/railties-6.0.3.7/lib/rails/initializable.rb:60:in `run_initializers'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/railties-6.0.3.7/lib/rails/application.rb:363:in `initialize!'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/railties-6.0.3.7/lib/rails/railtie.rb:190:in `public_send'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/railties-6.0.3.7/lib/rails/railtie.rb:190:in `method_missing'
 | /usr/share/foreman/config/environment.rb:5:in `<top (required)>'
 | /opt/rh/rh-ruby27/root/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:83:in `require'
 | /opt/rh/rh-ruby27/root/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:83:in `require'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/railties-6.0.3.7/lib/rails/application.rb:339:in `require_environment!'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/railties-6.0.3.7/lib/rails/application.rb:523:in `block in run_tasks_blocks'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:281:in `block in execute'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:281:in `each'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:281:in `execute'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:219:in `block in invoke_with_call_chain'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:199:in `synchronize'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:199:in `invoke_with_call_chain'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:243:in `block in invoke_prerequisites'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:241:in `each'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:241:in `invoke_prerequisites'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:218:in `block in invoke_with_call_chain'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:199:in `synchronize'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:199:in `invoke_with_call_chain'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/task.rb:188:in `invoke'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/application.rb:160:in `invoke_task'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/application.rb:116:in `block (2 levels) in top_level'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/application.rb:116:in `each'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/application.rb:116:in `block in top_level'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/application.rb:125:in `run_with_threads'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/application.rb:110:in `top_level'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/application.rb:83:in `block in run'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/application.rb:186:in `standard_exception_handling'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/lib/rake/application.rb:80:in `run'
 | /opt/rh/rh-ruby27/root/usr/share/gems/gems/rake-13.0.1/exe/rake:27:in `<top (required)>'
 | /opt/rh/rh-ruby27/root/usr/bin/rake:23:in `load'
 | /opt/rh/rh-ruby27/root/usr/bin/rake:23:in `<main>'
2

This is harmless. It seems your database still contains some data from trends, which was extracted to the plugin long time ago. It may be some permissions in custome roles. I actually see some permissions like this too on my setup. You can check that via console

foreman-rake console
Permission.where(:resource_type => 'Trend')
Permission.where(:resource_type => 'Trend').map(&:filterings)

We no longer seed them, but it seems we didn’t cleaned them after the extraction.

if you want to proceed further, make a DB backup at this point

You can delete them from console by

Permission.where(:resource_type => 'Trend').map(&:destroy)

This can leave Filters without any filterings, to get rid of those:

Filter.all.each {|f| f.destroy if f.filterings.empty? }

If you instead want to use Trends, just install the afformentioned plugin.

1 Like
3

Thanks. I can make a snapshot of my vm before changing. I don’t use the plugin.

However, what might go wrong with deleting those, or better: how do I know afterwards it’s working O.K. and no damage is done?

4

Well, the backup is rather for the case, something goes wrong and you delete some more permissions than expected. If you see non-admin users not being able to achieve/perform things they did before, that would be an issue. But I actually think the commands above are quite safe :slight_smile: If it worked, you should not see the logs anymore.

5

O.K. Cleaned it up. I have seen no issues and got no complaints…