Ubuntu/Rails PG :: InsufficientPrivilege：错误：权限被拒绝创建数据库

Question

我在我的Ubuntu 16.04 Droplet上托管一个Rails应用程序。我已经配置了Apache和我得到FATAL: database "MyAppName_development" does not exist，raise ActiveRecord::NoDatabaseError.new(error.message, error)

的database.yml

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: MyAppName_development 

test: 
    <<: *default 
    database: MyAppName_test 

production: 
    <<: *default 
    database: MyAppName_production 
    username: myusername 
    password: <%= ENV['MYAPPNAME_DATABASE_PASSWORD'] %> 

我跑从我的液滴中的以下命令：

sudo -i -u postgres 

psql 

# Inside psql: 
CREATE USER myusername WITH PASSWORD mypassword 
CREATE DATABASE MyAppName_production 
CREATE DATABASE MyAppName_test 
CREATE DATABASE MyAppName_development 
GRANT ALL PRIVILEGES ON DATABASE MyAppName_production to myusername 
GRANT ALL PRIVILEGES ON DATABASE MyAppName_test to myusername 
GRANT ALL PRIVILEGES ON DATABASE MyAppName_development to myusername 
ALTER USER myusername CREATEDB 
\q 

exit 

从里面MyAppName根目录我的滴我跑了bundle exec rake db:drop，然后bundle exec rake db:create:all并拿回了以下内容：

PG::InsufficientPrivilege: ERROR: permission denied to create database 
: CREATE DATABASE "MyAppName_development" ENCODING = 'unicode' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:155:in `async_exec' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:155:in `block in execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract_adapter.rb:472:in `block in log' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activesupport-4.2.6/lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract_adapter.rb:466:in `log' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:154:in `execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/schema_statements.rb:78:in `create_database' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/postgresql_database_tasks.rb:15:in `create' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:93:in `create' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:102:in `block in create_all' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:284:in `block in each_local_configuration' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:280:in `each_value' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:280:in `each_local_configuration' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:102:in `create_all' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/railties/databases.rake:11:in `block (3 levels) in <top (required)>' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:248:in `block in execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:243:in `each' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:243:in `execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:187:in `block in invoke_with_call_chain' 
/home/myusername/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:180:in `invoke_with_call_chain' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:173:in `invoke' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:150:in `invoke_task' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:106:in `block (2 levels) in top_level' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:106:in `each' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:106:in `block in top_level' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:115:in `run_with_threads' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:100:in `top_level' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:78:in `block in run' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:176:in `standard_exception_handling' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:75:in `run' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/bin/rake:33:in `<top (required)>' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/rake:23:in `load' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/rake:23:in `<main>' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `eval' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `<main>' 
Couldn't create database for {"username"=>"myusername", "adapter"=>"postgresql", "encoding"=>"unicode", "pool"=>5, "database"=>"MyAppName_development", "password"=>nil} 
PG::InsufficientPrivilege: ERROR: permission denied to create database 
: CREATE DATABASE "MyAppName_test" ENCODING = 'unicode' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:155:in `async_exec' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:155:in `block in execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract_adapter.rb:472:in `block in log' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activesupport-4.2.6/lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract_adapter.rb:466:in `log' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:154:in `execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/schema_statements.rb:78:in `create_database' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/postgresql_database_tasks.rb:15:in `create' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:93:in `create' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:102:in `block in create_all' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:284:in `block in each_local_configuration' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:280:in `each_value' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:280:in `each_local_configuration' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:102:in `create_all' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/railties/databases.rake:11:in `block (3 levels) in <top (required)>' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:248:in `block in execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:243:in `each' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:243:in `execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:187:in `block in invoke_with_call_chain' 
/home/myusername/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:180:in `invoke_with_call_chain' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:173:in `invoke' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:150:in `invoke_task' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:106:in `block (2 levels) in top_level' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:106:in `each' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:106:in `block in top_level' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:115:in `run_with_threads' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:100:in `top_level' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:78:in `block in run' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:176:in `standard_exception_handling' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:75:in `run' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/bin/rake:33:in `<top (required)>' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/rake:23:in `load' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/rake:23:in `<main>' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `eval' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `<main>' 
Couldn't create database for {"username"=>"myusername", "adapter"=>"postgresql", "encoding"=>"unicode", "pool"=>5, "database"=>"MyAppName_test", "password"=>nil} 
PG::InsufficientPrivilege: ERROR: permission denied to create database 
: CREATE DATABASE "MyAppName_production" ENCODING = 'unicode' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:155:in `async_exec' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:155:in `block in execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract_adapter.rb:472:in `block in log' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activesupport-4.2.6/lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract_adapter.rb:466:in `log' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:154:in `execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/schema_statements.rb:78:in `create_database' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/postgresql_database_tasks.rb:15:in `create' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:93:in `create' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:102:in `block in create_all' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:284:in `block in each_local_configuration' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:280:in `each_value' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:280:in `each_local_configuration' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/tasks/database_tasks.rb:102:in `create_all' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/activerecord-4.2.6/lib/active_record/railties/databases.rake:11:in `block (3 levels) in <top (required)>' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:248:in `block in execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:243:in `each' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:243:in `execute' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:187:in `block in invoke_with_call_chain' 
/home/myusername/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:180:in `invoke_with_call_chain' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/task.rb:173:in `invoke' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:150:in `invoke_task' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:106:in `block (2 levels) in top_level' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:106:in `each' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:106:in `block in top_level' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:115:in `run_with_threads' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:100:in `top_level' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:78:in `block in run' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:176:in `standard_exception_handling' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/lib/rake/application.rb:75:in `run' 
/home/myusername/.rvm/gems/ruby-2.3.1/gems/rake-11.1.2/bin/rake:33:in `<top (required)>' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/rake:23:in `load' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/rake:23:in `<main>' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `eval' 
/home/myusername/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `<main>' 
Couldn't create database for {"username"=>"myusername", "adapter"=>"postgresql", "encoding"=>"unicode", "pool"=>5, "database"=>"MyAppName_production", "password"=>nil} 

Answer 1

我建议你可以在迁移之前重置postgres中的db。

pg:reset DATABASE_NAME 

，并在以后的项目目录

rake db:schema:load 
rake db:migrate 

，如果你有种子数据

rake db:seed