Я использую win 7 с докером, а в докере я использую ruby на рельсах, я сделал приложение, которое очень хорошо работает с sqlite3, но когда я пытаюсь загрузить в Heroku, Heroku выдал ошибку, что он не поддерживается sqlite3 поэтому мне пришлось изменить базу данных приложения на PostgreSQL, и я сделал следующие изменения:
в моем Gemfile я прокомментировал gem sqlite3:
# Use sqlite3 as the database for Active Record
#gem 'sqlite3'
#posgresql
gem 'pg'
Во-вторых, я выполнил "комплектную установку", а затем сборку Docker-Compuse
тогда в моем database.yml:
ДО:
default: &default
adapter: sqlite3
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
timeout: 5000
development:
<<: *default
database: db/development.sqlite3
# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
<<: *default
database: db/test.sqlite3
production:
<<: *default
database: db/production.sqlite3
после изменений:
development:
adapter: postgresql
database: my_database_development
pool: 5
timeout: 5000
test:
adapter: postgresql
database: my_database_test
pool: 5
timeout: 5000
production:
adapter: postgresql
database: my_database_production
pool: 5
timeout: 5000
поэтому, когда я попытался создать новую базу данных с помощью "rake db: create", докер выдал мне следующую ошибку:
$ docker-compose run web rails db:create
Starting grupo43_postgres_1 ... done
could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?
Couldn't create database for {"adapter"=>"postgresql", "database"=>"my_database_
development", "pool"=>5, "timeout"=>5000}
rails aborted!
PG::ConnectionBad: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?
/usr/local/bundle/gems/pg-1.0.0/lib/pg.rb:56:in `initialize'
/usr/local/bundle/gems/pg-1.0.0/lib/pg.rb:56:in `new'
/usr/local/bundle/gems/pg-1.0.0/lib/pg.rb:56:in `connect'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_adapters/
postgresql_adapter.rb:697:in `connect'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_adapters/
postgresql_adapter.rb:221:in `initialize'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_adapters/
postgresql_adapter.rb:38:in `new'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_adapters/
postgresql_adapter.rb:38:in `postgresql_connection'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_adapters/
abstract/connection_pool.rb:759:in `new_connection'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_adapters/
abstract/connection_pool.rb:803:in `checkout_new_connection'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_adapters/
abstract/connection_pool.rb:782:in `try_to_checkout_new_connection'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_adapters/
abstract/connection_pool.rb:743:in `acquire_connection'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_adapters/
abstract/connection_pool.rb:500:in `checkout'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_adapters/
abstract/connection_pool.rb:374:in `connection'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_adapters/
abstract/connection_pool.rb:931:in `retrieve_connection'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_handling.
rb:116:in `retrieve_connection'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/connection_handling.
rb:88:in `connection'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/tasks/postgresql_dat
abase_tasks.rb:10:in `connection'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/tasks/postgresql_dat
abase_tasks.rb:19:in `create'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/tasks/database_tasks
.rb:117:in `create'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/tasks/database_tasks
.rb:137:in `block in create_current'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/tasks/database_tasks
.rb:305:in `block in each_current_configuration'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/tasks/database_tasks
.rb:302:in `each'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/tasks/database_tasks
.rb:302:in `each_current_configuration'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/tasks/database_tasks
.rb:136:in `create_current'
/usr/local/bundle/gems/activerecord-5.1.6/lib/active_record/railties/databases.r
ake:27:in `block (2 levels) in <top (required)>'
/usr/local/bundle/gems/railties-5.1.6/lib/rails/commands/rake/rake_command.rb:21
:in `block in perform'
/usr/local/bundle/gems/railties-5.1.6/lib/rails/commands/rake/rake_command.rb:18
:in `perform'
/usr/local/bundle/gems/railties-5.1.6/lib/rails/command.rb:46:in `invoke'
/usr/local/bundle/gems/railties-5.1.6/lib/rails/commands.rb:16:in `<top (require
d)>'
/example/bin/rails:9:in `require'
/example/bin/rails:9:in `<top (required)>'
/usr/local/bundle/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load'
/usr/local/bundle/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call'
/usr/local/bundle/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
/usr/local/bundle/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
/usr/local/bundle/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
/usr/local/bundle/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
/usr/local/bundle/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)
>'
/example/bin/spring:15:in `require'
/example/bin/spring:15:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'
Tasks: TOP => db:create
(See full trace by running task with --trace)
Я нашел другое решение, но для Linux и Mac все, что я мог сообщить здесь, это то, что, возможно, проблема в том, что мне нужно удалить какой-то файл, который я не знал, где я могу найти с Windows или с Docker :(, все информация, которую я нашел здесь: PG :: ConnectionBad - не удалось подключиться к серверу: соединение отклонено
это мой файл docker-compose.yml:
version: '3'
services:
postgres:
image: postgres:10.3
ports:
- "3000"
web:
build: .
env_file:
- .env
command: bash -c "(bundle check || bundle install) && bundle exec rails s -p 3000 -b '0.0.0.0'"
volumes:
- .:/example
ports:
- "3000:3000"
depends_on:
- postgres