当mina部署运行时，在迁移期间发生错误，pg gem未加载。问题是gem已加载到我的gem文件中但在mina的bundle安装期间pg gem没有安装
如何解决此问题？
-----> Migrating database
$ RAILS_ENV="production" bundle exec rake db:migrate
rake aborted!
Gem::LoadError: Specified 'postgresql' for database adapter, but the gem is not loaded. Add `gem 'pg'` to your Gemfile (and ensure its version is at the minimum required by ActiveRecord).
的Gemfile
gem 'mail_form'
gem 'devise'
gem 'cancancan'
group :production do
gem 'pg'
gem 'therubyracer'
end
的database.yml
production:
adapter: postgresql
encoding: unicode
database: tech
username: admin
password: PASSWORD
host: localhost
mina deploy --verbose
-----> Loading rbenv
$ export RBENV_ROOT="$HOME/.rbenv"
$ export PATH="$HOME/.rbenv/bin:$PATH"
$ eval "$(rbenv init -)"
-----> Creating a temporary build path
$ touch "deploy.lock"
$ mkdir -p "$build_path"
$ cd "$build_path"
-----> Fetching new git commits
$ (cd "/home/deployer/tech/scm" && git fetch "git@bitbucket.org:gns/tech.git" "master:m
$ (cd "/home/deployer/tech/scm" && git fetch "git@bitbucket.org:gns/tech.git" "master:master" --force)
-----> Using git branch 'master'
$ git clone "/home/deployer/tech/scm" . --recursive --branch "master"
Cloning into '.'...
done.
-----> Using this git commit
$ git --no-pager log --format='%aN (%h):%n> %s' -n 1
yiannis (4ef997e):
> Gemfile
$ rm -rf .git
-----> Symlinking shared paths
$ mkdir -p "./config"
$ mkdir -p "."
$ rm -rf "./config/database.yml"
$ ln -s "/home/deployer/tech/shared/config/database.yml" "./config/database.yml"
$ rm -rf "./log"
$ ln -s "/home/deployer/tech/shared/log" "./log"
$ rm -rf "./config/secrets.yml"
$ ln -s "/home/deployer/tech/shared/config/secrets.yml" "./config/secrets.yml"
-----> Installing gem dependencies using Bundler
$ mkdir -p "/home/deployer/tech/shared/bundle"
$ mkdir -p "./vendor"
$ ln -s "/home/deployer/tech/shared/bundle" "./vendor/bundle"
$ bundle install --without development:test --path "./vendor/bundle" --deployment
Fetching gem metadata from http://rubygems.org/........
Using rake 10.4.2
Using i18n 0.6.11
Using json 1.8.1
Using minitest 5.5.0
Using thread_safe 0.3.4
Using tzinfo 1.2.2
Using activesupport 4.1.8
Using builder 3.2.2
Using erubis 2.7.0
Using actionview 4.1.8
Using rack 1.5.2
Using rack-test 0.6.2
Using actionpack 4.1.8
Using mime-types 2.4.3
Using mail 2.6.3
Using actionmailer 4.1.8
Using activemodel 4.1.8
Using arel 5.0.1.20140414130214
Using activerecord 4.1.8
Using bundler 1.8.0.pre
Using thor 0.19.1
Using railties 4.1.8
Using hike 1.2.3
Using multi_json 1.10.1
Using tilt 1.4.1
Using sprockets 2.12.3
Using sprockets-rails 2.2.2
Using rails 4.1.8
Using animate-rails 1.0.7
Using aws-sdk-v1 1.59.1
Using aws-sdk 1.59.1
Using cancancan 1.9.2
Using chronic 0.10.2
Using climate_control 0.0.3
Using cocaine 0.5.5
Using coffee-script-source 1.8.0
Using execjs 2.2.2
Using coffee-script 2.3.0
Using coffee-rails 4.0.1
Using orm_adapter 0.5.0
Using responders 1.1.2
Using warden 1.2.3
Using devise 3.4.1
Using figaro 1.0.0
Using font-awesome-rails 4.2.0.0
Using foundation-datetimepicker-rails 0.1.3
Using sass 3.2.19
Using foundation-rails 5.4.5.0
Using friendly_id 5.0.4
Using google-webfonts-rails 0.0.4
Using jbuilder 2.2.6
Using jquery-rails 3.1.2
Using kaminari 0.16.1
Using libv8 3.16.14.7
Using mail_form 1.5.0
Using newrelic_rpm 3.9.8.273
Using paperclip 4.2.1
Using pg_search 0.7.8
Using rdoc 4.2.0
Using ref 1.0.5
Using sass-rails 4.0.5
Using sdoc 0.4.1
Using therubyracer 0.12.1
Using uglifier 2.6.0
Using whenever 0.9.4
Bundle complete! 25 Gemfile dependencies, 65 gems now installed.
Gems in the groups development and test were not installed.
Bundled gems are installed into ./vendor/bundle.
-----> Migrating database
$ RAILS_ENV="production" bundle exec rake db:migrate
rake aborted!
Gem::LoadError: Specified 'postgresql' for database adapter, but the gem is not loaded. Add `gem 'pg'` to your Gemfile (and ensure its version is at the minimum required by ActiveRecord).
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activerecord-4.1.8/lib/active_record/connection_adapters/connection_specification.rb:190:in `rescue in spec'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activerecord-4.1.8/lib/active_record/connection_adapters/connection_specification.rb:187:in `spec'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activerecord-4.1.8/lib/active_record/connection_handling.rb:50:in `establish_connection'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activerecord-4.1.8/lib/active_record/railtie.rb:129:in `block (2 levels) in <class:Railtie>'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/lazy_load_hooks.rb:28:in `block in on_load'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/lazy_load_hooks.rb:27:in `each'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/lazy_load_hooks.rb:27:in `on_load'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activerecord-4.1.8/lib/active_record/railtie.rb:118:in `block in <class:Railtie>'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:30:in `instance_exec'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:30:in `run'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:55:in `block in run_initializers'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:54:in `run_initializers'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/application.rb:300:in `initialize!'
/home/deployer/tech/tmp/build-142229948411279/config/environment.rb:5:in `<top (required)>'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `block in require'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:232:in `load_dependency'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/application.rb:276:in `require_environment!'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/application.rb:389:in `block in run_tasks_blocks'
Gem::LoadError: pg is not part of the bundle. Add it to Gemfile.
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activerecord-4.1.8/lib/active_record/connection_adapters/postgresql_adapter.rb:13:in `<top (required)>'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `block in require'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:232:in `load_dependency'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activerecord-4.1.8/lib/active_record/connection_adapters/connection_specification.rb:188:in `spec'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activerecord-4.1.8/lib/active_record/connection_handling.rb:50:in `establish_connection'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activerecord-4.1.8/lib/active_record/railtie.rb:129:in `block (2 levels) in <class:Railtie>'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/lazy_load_hooks.rb:28:in `block in on_load'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/lazy_load_hooks.rb:27:in `each'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/lazy_load_hooks.rb:27:in `on_load'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activerecord-4.1.8/lib/active_record/railtie.rb:118:in `block in <class:Railtie>'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:30:in `instance_exec'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:30:in `run'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:55:in `block in run_initializers'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:54:in `run_initializers'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/application.rb:300:in `initialize!'
/home/deployer/tech/tmp/build-142229948411279/config/environment.rb:5:in `<top (required)>'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `block in require'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:232:in `load_dependency'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/application.rb:276:in `require_environment!'
/home/deployer/tech/tmp/build-142229948411279/vendor/bundle/ruby/2.1.0/gems/railties-4.1.8/lib/rails/application.rb:389:in `block in run_tasks_blocks'
Tasks: TOP => db:migrate => environment
(See full trace by running task with --trace)
! ERROR: Deploy failed.
-----> Cleaning up build
$ rm -rf "$build_path"
Unlinking current
$ rm -f "deploy.lock"
OK
! Command failed.
Failed with status 19
答案 0 :(得分：0)
我确定set :rails_env, 'production'仅为rake和rails命令设置了环境，因此请尝试bundle_prefix。
在最坏的情况下，将gem 'pg'移动到Gemfile的公共部分。