当我运行命令
时，我正在尝试部署我的应用程序rails server -b $IP -p $PORT
我得到了一个错误的
PG :: ConnectionBad
无法连接到服务器：连接被拒绝服务器是否在本地运行并接受Unix域套接字“/var/run/postgresql/.s.PGSQL.5432”上的连接？
提取的来源（第56行）：
### Convenience alias for PG::Connection.new.
def self::connect( *args )
return PG::Connection.new( *args )
end
我的database.yml是
# SQLite version 3.x
# gem install sqlite3
#
# Ensure the SQLite 3 gem is defined in your Gemfile
# gem 'sqlite3'
#
default: &default
adapter: postgresql
encoding: unicode
# For details on connection pooling, see rails configuration guide
# http://guides.rubyonrails.org/configuring.html#database-pooling
pool: 5
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
=======更新=====
我现在收到一条错误，上面写着ActiveRecord :: NoDatabaseError， 致命：数据库“sale_development”不存在
当我将database.yml更新为
时# SQLite version 3.x
# gem install sqlite3
#
# Ensure the SQLite 3 gem is defined in your Gemfile
# gem 'sqlite3'
#
default: &default
adapter: postgresql
encoding: unicode
# For details on connection pooling, see rails configuration guide
# http://guides.rubyonrails.org/configuring.html#database-pooling
pool: 5
development:
adapter: postgresql
encoding: unicode
database: sale_development
pool: 5
test: &test
adapter: postgresql
encoding: unicode
database: sale_test
pool: 5
production:
adapter: postgresql
encoding: unicode
database: sale_production
pool: 5
host: localhost
username: sale
password: <%= ENV['SALE_DATABASE_PASSWORD'] %>
=＆GT;引导美洲狮
CKOUT”
web-console（3.5.1）lib / web_console / middleware.rb:135：在call_app'actionpack (5.1.1) lib/action_dispatch/middleware/request_id.rb:25:in调用'
rack（2.0.3）lib / rack / method_override.rb:22:in call'
rack (2.0.3) lib/rack/runtime.rb:22:in call'
activesupport（5.1.1）lib / active_support / cache / strategy / local_cache_middleware.rb:27:in call'
puma (3.8.2) lib/puma/thread_pool.rb:120:in block in spawn_thread'
ActiveRecord :: StatementInvalid：PG :: InvalidParameterValue：ERROR：new encoding（UTF8）iscompat17：in create'
/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/tasks/database_tasks.rb:303:in each'
/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/tasks/database_tasks.rb:3Tasks：TOP =＆gt; DB：创建
ActiveRecord :: StatementInvalid：PG :: InvalidParameterValue：ERROR：new encoding（UTF8）iscompat17：in create'
/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/tasks/database_tasks.rb:303:in each'
/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/tasks/database_tasks.rb:303:in each_current_configuration'
/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/tasks/database_tasks.rb:136:in create_current'
/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/railties/databases.rake:2/usr/local/rvm/gems/ruby-2.3.0/bin / ruby_executable_hooks：15：eval'
/usr/local/rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in'
/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/migration.rb:1007:in up'
/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/tasks/database_tasks.rb:303:in每个'
/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/tasks/database_tasks.rb:3/usr/local/rvm/gems/ruby-2.3.0/gems /activesupport-5.1.1/lib/active_support/dependencies/interlock./usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/tasks/database_tasks.rb:303：在each'/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/tasks/database_tasks.rb:303:in each_current_configuration'/ usr / local / rvm / gems / ruby-2.3.0 / gems / activerecord-5.1.1 / lib / active_record / tasks / database_tasks.rb：136：in create_current'/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.1.1/lib/active_record/railties/databases.rake:27:in block （2级）在'/usr/local/rvm/gems/ruby-2.3.0/gems/rake-12.0.0/exe/rake:27:in <top (required)>'
/usr/local/rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in eval'
/usr/local/rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in`'
任务：TOP =＆gt; DB：创建
（通过使用--trace运行任务查看完整跟踪）
=====更新====
的Gemfile
source 'https://rubygems.org'
git_source(:github) do |repo_name|
repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/")
"https://github.com/#{repo_name}.git"
end
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.1.1'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
gem 'pg'
# Use Puma as the app server
gem 'puma', '~> 3.7'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 3.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'
gem 'bootstrap-sass'
gem "paperclip", "~> 5.0.0"
gem 'devise', '~> 4.3'
gem 'will_paginate', '~> 3.0'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
end
group :development do
# Access an IRB console on exception pages or by using <%= console %> anywhere in the code.
gem 'web-console', '>= 3.3.0'
gem 'listen', '>= 3.0.5', '< 3.2'
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring'
gem 'spring-watcher-listen', '~> 2.0.0'
end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
答案 0 :(得分：0)
我认为它显示了与sqlite3的连接，如果它是生产，那么你必须输入用户名和密码
如果使用postgresql
，这是供您参考的development:
adapter: postgresql
encoding: unicode
database: your_database_name
pool: 5
test: &test
adapter: postgresql
encoding: unicode
database: your_database_name_test
pool: 5
production:
adapter: postgresql
encoding: unicode
database: your_database_name_production
pool: 5
host: localhost
username: some_user_name
password: some_password