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Comments on How to solve Lost connection to MySQL server at 'reading initial communication packet', system error: 0

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How to solve Lost connection to MySQL server at 'reading initial communication packet', system error: 0 Question

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screenshot of text after rails db:create

screenshot of text

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>'

installation

posted over 3 years ago

CC BY-SA 4.0

3y ago by Canina‭

Gate_sprit‭

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not constructive

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You forgot to turn on mysql.

sudo systemctl enable mysql

systemctl doesn't work for every distro. If your system doesn't have systemctl then, you have to use service

sudo service mysql enable

Sometimes only enabling mysql service isn't helpful. Then, you have to login to mysql once.

mysql -u root -p

It will request you to enter password. Then, enter your password. Then, you can exit if you want. Then, try creating database again.

rails db:create

posted over 3 years ago

CC BY-SA 4.0

3y ago

deleted user

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nothing change ! I try everthing. (15 comments)

installation (3 comments)

Gate_sprit‭ wrote over 3 years ago

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I'm stuck at:https://github.com/codidact/qpixel/blob/develop/config/database.sample.yml my domain name is bimberspot.com CREATE USER qpixel@localhost IDENTIFIED BY 'choose_a_password_here'; GRANT ALL ON qpixel_dev.* TO qpixel@localhost; GRANT ALL ON qpixel_test.* TO qpixel@localhost; GRANT ALL ON qpixel.* TO qpixel@localhost;

My domain IP is 104.238.145.139 ?? any suggestions. everything is correct: errors message

deleted user wrote over 3 years ago · edited over 3 years ago

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host: 104.238.145.139 #(not sure if you have to use domain ip instead of 127.0.0.1)
  port: 3306
  # Change these credentials to match your own environment
  username: yourdatabaseusername (e.g. root)
  password: yourdatabasepassword

redis_default: &redis_default
  host: 104.238.145.139 #(not sure if you have to use domain ip instead of 127.0.0.1)
  port: 6379
  # Also supported: db, url, path, password. See https://github.com/redis/redis-rb for docs.

Maybe they should be 127.0.0.1 by default for any server either. I don't have any experience with working on manual server.