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This suggested edit was approved and applied to the post over 3 years ago by Gate_sprit‭.

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How to solve Lost connection to MySQL server at 'reading initial communication packet', system error: 0
  • ![image](https://collab.codidact.org/uploads/H3C5Xdr7W1D5KAwp3P48MobZ)
  • after
  • `rails db:create`
  • ![Image alt text](https://collab.codidact.org/uploads/iZXDFk7j9FcLiveRmGuukTTP)
  • Lost connection to MySQL server at 'reading initial communication packet', syste m error: 0
  • Couldn't create 'qpixel_dev' database. Please check your configuration.
  • rails aborted!
  • Mysql2::Error::ConnectionError: Lost connection to MySQL server at 'reading init ial communication packet', system error: 0
  • /usr/share/rvm/gems/ruby-2.6.6/gems/mysql2-0.5.3/lib/mysql2/client.rb:90:in `con nect'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/mysql2-0.5.3/lib/mysql2/client.rb:90:in `ini tialize'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/mysql2_adapter.rb:22:in `new'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/mysql2_adapter.rb:22:in `mysql2_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:830:in `new_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:874:in `checkout_new_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:853:in `try_to_checkout_new_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:814:in `acquire_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:538:in `checkout'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:382:in `connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:1033:in `retrieve_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_handling.rb:118:in `retrieve_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_handling.rb:90:in `connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/m ysql_database_tasks.rb:6:in `connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/m ysql_database_tasks.rb:14:in `create'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:119:in `create'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:139:in `block in create_current'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:316:in `block in each_current_configuration'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:313:in `each'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:313:in `each_current_configuration'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:138:in `create_current'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/railtie s/databases.rake:29:in `block (2 levels) in <top (required)>'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/railties-5.2.6/lib/rails/commands/rake/rake_ command.rb:23:in `block in perform'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/railties-5.2.6/lib/rails/commands/rake/rake_ command.rb:20:in `perform'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/railties-5.2.6/lib/rails/command.rb:48:in `i nvoke'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/railties-5.2.6/lib/rails/commands.rb:18:in ` <top (required)>'
  • /root/qpixel/bin/rails:9:in `require'
  • /root/qpixel/bin/rails:9:in `<top (required)>'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/client/rails.rb:28:i n `load'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/client/rails.rb:28:i n `call'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/client/command.rb:7: in `call'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/client.rb:30:in `run '
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/bin/spring:49:in `<top (require d)>'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `lo ad'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `<t op (required)>'
  • /root/qpixel/bin/spring:13:in `require'
  • /root/qpixel/bin/spring:13:in `<top (required)>'
  • bin/rails:3:in `load'
  • bin/rails:3:in `<main>'
  • ![screenshot of text](https://collab.codidact.org/uploads/H3C5Xdr7W1D5KAwp3P48MobZ)
  • after
  • `rails db:create`
  • ![screenshot of text](https://collab.codidact.org/uploads/iZXDFk7j9FcLiveRmGuukTTP)
  • ```
  • Lost connection to MySQL server at 'reading initial communication packet', syste m error: 0
  • Couldn't create 'qpixel_dev' database. Please check your configuration.
  • rails aborted!
  • Mysql2::Error::ConnectionError: Lost connection to MySQL server at 'reading init ial communication packet', system error: 0
  • /usr/share/rvm/gems/ruby-2.6.6/gems/mysql2-0.5.3/lib/mysql2/client.rb:90:in `con nect'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/mysql2-0.5.3/lib/mysql2/client.rb:90:in `ini tialize'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/mysql2_adapter.rb:22:in `new'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/mysql2_adapter.rb:22:in `mysql2_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:830:in `new_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:874:in `checkout_new_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:853:in `try_to_checkout_new_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:814:in `acquire_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:538:in `checkout'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:382:in `connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_adapters/abstract/connection_pool.rb:1033:in `retrieve_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_handling.rb:118:in `retrieve_connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/connect ion_handling.rb:90:in `connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/m ysql_database_tasks.rb:6:in `connection'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/m ysql_database_tasks.rb:14:in `create'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:119:in `create'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:139:in `block in create_current'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:316:in `block in each_current_configuration'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:313:in `each'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:313:in `each_current_configuration'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/tasks/d atabase_tasks.rb:138:in `create_current'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/activerecord-5.2.6/lib/active_record/railtie s/databases.rake:29:in `block (2 levels) in <top (required)>'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/railties-5.2.6/lib/rails/commands/rake/rake_ command.rb:23:in `block in perform'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/railties-5.2.6/lib/rails/commands/rake/rake_ command.rb:20:in `perform'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/railties-5.2.6/lib/rails/command.rb:48:in `i nvoke'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/railties-5.2.6/lib/rails/commands.rb:18:in ` <top (required)>'
  • /root/qpixel/bin/rails:9:in `require'
  • /root/qpixel/bin/rails:9:in `<top (required)>'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/client/rails.rb:28:i n `load'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/client/rails.rb:28:i n `call'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/client/command.rb:7: in `call'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/client.rb:30:in `run '
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/bin/spring:49:in `<top (require d)>'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `lo ad'
  • /usr/share/rvm/gems/ruby-2.6.6/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `<t op (required)>'
  • /root/qpixel/bin/spring:13:in `require'
  • /root/qpixel/bin/spring:13:in `<top (required)>'
  • bin/rails:3:in `load'
  • bin/rails:3:in `<main>'
  • ```
tests
installation

Suggested over 3 years ago by Canina‭