Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs

Dashboard
Notifications
Mark all as read
Q&A
Parent

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

+0
−0

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>'
Why does this post require moderator attention?
You might want to add some details to your flag.
Why should this post be closed?

0 comment threads

Post
+2
−0

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
Why does this post require moderator attention?
You might want to add some details to your flag.

2 comment threads

nothing change ! I try everthing. (15 comments)
installation (3 comments)

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

installation
Gate_sprit‭ wrote 3 months ago:

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

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

Istiak‭ wrote 3 months ago:

everything is correct: errors message Everything is correct. Is that error message? :thinking:

Istiak‭ wrote 3 months ago:
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.

This community is part of the Codidact network. We have other communities too — take a look!

You can also join us in chat!

Want to advertise this community? Use our templates!

Like what we're doing? Support us! Donate