AWS Lambda：无法加载 'active_record/connection_adapters/postgresql_adapter'
AWS Lambda: Could not load 'active_record/connection_adapters/postgresql_adapter'
我正在使用 AWS Lambda 运行 一个简单的 ruby 脚本，其中 github project 具有适合我需要的框架。
由于作为堆栈一部分的 Traveling Ruby 的限制，在遇到几个 ruby 和捆绑程序版本冲突之后。
我能够在本地成功 运行 脚本，但是当我打包它并更新 Lambda 函数时，我在测试它时在 AWS 控制台上收到一个奇怪的错误：
START RequestId: feab102b-5da5-11e7-bf18-739c73eb4ef0 Version: $LATEST
2017-06-30T15:08:39.144Z feab102b-5da5-11e7-bf18-739c73eb4ef0 Starting process: ./app
2017-06-30T15:08:51.403Z feab102b-5da5-11e7-bf18-739c73eb4ef0 stderr:
/var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
2017-06-30T15:08:51.403Z feab102b-5da5-11e7-bf18-739c73eb4ef0 stderr:
: Could not load 'active_record/connection_adapters/postgresql_adapter'. Make sure that the adapter in config/database.yml is valid. If you use an adapter other than 'mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile. (LoadError)
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/pg-0.21.0/lib/pg.rb:4:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:17:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord 4.2.9/lib/active_record/connection_adapters/connection_specification.rb:175:in `spec'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord 4.2.9/lib/active_record/connection_handling.rb:50:in `establish_connection'
from /var/task/lib/app/app.rb:12:in `<main>'
2017-06-30T15:08:51.744Z feab102b-5da5-11e7-bf18-739c73eb4ef0 {"errorMessage":"Process \"./app\" exited with code: 1"}
END RequestId: feab102b-5da5-11e7-bf18-739c73eb4ef0
在 db/config.yml（它称为 config/database.yml，因为它应该默认为 rails 树）我已经设置了 adapter: postgresql 和所有其他必需的设置。
代码完全存储在 .zip 文件中，我已经解压它并能够找到 lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb，我猜它是在 Lambda 中的 /var/task 上提取的日志中显示的环境。
我唯一能想到的是，在 require 的那一刻，它在基本路径上迷路了，因此找不到要加载的文件。
对于我可能遗漏的任何内容或解决此问题的任何线索，我将不胜感激。
谢谢！
最终上面的错误具有误导性，因为 activerecord 实际上挽救了异常并引发了自定义错误消息，因此没有反映加载 [=12= 时堆栈中其他地方发生的真实情况] gem。实际错误是这样的：
START RequestId: a9e88496-6005-11e7-924c-e7c37f2df3e0 Version: $LATEST
2017-07-03T15:38:30.977Z a9e88496-6005-11e7-924c-e7c37f2df3e0 Starting process: ./app
2017-07-03T15:38:42.337Z a9e88496-6005-11e7-924c-e7c37f2df3e0 stderr:
/var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
2017-07-03T15:38:42.456Z a9e88496-6005-11e7-924c-e7c37f2df3e0 stderr:
: libpq.so.5: cannot open shared object file: No such file or directory - /var/task/lib/vendor/ruby/2.1.0/extensions/x86_64-linux/2.1.0-static/pg-0.21.0/pg_ext.so - libpq.so.5: cannot open shared object file: No such file or directory - /var/task/lib/vendor/ruby/2.1.0/extensions/x86_64-linux/2.1.0-static/pg-0.21.0/pg_ext.so - Could not load 'active_record/connection_adapters/postgresql_adapter'. Make sure that the adapter in config/database.yml is valid. If you use an adapter other than 'mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile. (LoadError)
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/pg-0.21.0/lib/pg.rb:4:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:17:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/connection_specification.rb:175:in `spec'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_handling.rb:50:in `establish_connection'
from /var/task/lib/app/app.rb:12:in `<main>'
2017-07-03T15:38:42.676Z a9e88496-6005-11e7-924c-e7c37f2df3e0 {"errorMessage":"Process \"./app\" exited with code: 1"}
END RequestId: a9e88496-6005-11e7-924c-e7c37f2df3e0
真正的原因也隐藏在这个错误的背后。并不是找不到 pg_ext.so，因为它就在这条路径中。
经过更多研究，最后一个问题是 libpg.so.5 本身就是缺失的，为了解决这个问题，我必须将它添加到 Traveling Ruby 的库路径中。
希望以后能对别人有所帮助！
我正在使用 AWS Lambda 运行 一个简单的 ruby 脚本，其中 github project 具有适合我需要的框架。
由于作为堆栈一部分的 Traveling Ruby 的限制，在遇到几个 ruby 和捆绑程序版本冲突之后。
我能够在本地成功 运行 脚本，但是当我打包它并更新 Lambda 函数时，我在测试它时在 AWS 控制台上收到一个奇怪的错误：
START RequestId: feab102b-5da5-11e7-bf18-739c73eb4ef0 Version: $LATEST
2017-06-30T15:08:39.144Z feab102b-5da5-11e7-bf18-739c73eb4ef0 Starting process: ./app
2017-06-30T15:08:51.403Z feab102b-5da5-11e7-bf18-739c73eb4ef0 stderr:
/var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
2017-06-30T15:08:51.403Z feab102b-5da5-11e7-bf18-739c73eb4ef0 stderr:
: Could not load 'active_record/connection_adapters/postgresql_adapter'. Make sure that the adapter in config/database.yml is valid. If you use an adapter other than 'mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile. (LoadError)
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/pg-0.21.0/lib/pg.rb:4:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:17:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord 4.2.9/lib/active_record/connection_adapters/connection_specification.rb:175:in `spec'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord 4.2.9/lib/active_record/connection_handling.rb:50:in `establish_connection'
from /var/task/lib/app/app.rb:12:in `<main>'
2017-06-30T15:08:51.744Z feab102b-5da5-11e7-bf18-739c73eb4ef0 {"errorMessage":"Process \"./app\" exited with code: 1"}
END RequestId: feab102b-5da5-11e7-bf18-739c73eb4ef0
在 db/config.yml（它称为 config/database.yml，因为它应该默认为 rails 树）我已经设置了 adapter: postgresql 和所有其他必需的设置。
代码完全存储在 .zip 文件中，我已经解压它并能够找到 lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb，我猜它是在 Lambda 中的 /var/task 上提取的日志中显示的环境。
我唯一能想到的是，在 require 的那一刻，它在基本路径上迷路了，因此找不到要加载的文件。
对于我可能遗漏的任何内容或解决此问题的任何线索，我将不胜感激。
谢谢！
最终上面的错误具有误导性，因为 activerecord 实际上挽救了异常并引发了自定义错误消息，因此没有反映加载 [=12= 时堆栈中其他地方发生的真实情况] gem。实际错误是这样的：
START RequestId: a9e88496-6005-11e7-924c-e7c37f2df3e0 Version: $LATEST
2017-07-03T15:38:30.977Z a9e88496-6005-11e7-924c-e7c37f2df3e0 Starting process: ./app
2017-07-03T15:38:42.337Z a9e88496-6005-11e7-924c-e7c37f2df3e0 stderr:
/var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
2017-07-03T15:38:42.456Z a9e88496-6005-11e7-924c-e7c37f2df3e0 stderr:
: libpq.so.5: cannot open shared object file: No such file or directory - /var/task/lib/vendor/ruby/2.1.0/extensions/x86_64-linux/2.1.0-static/pg-0.21.0/pg_ext.so - libpq.so.5: cannot open shared object file: No such file or directory - /var/task/lib/vendor/ruby/2.1.0/extensions/x86_64-linux/2.1.0-static/pg-0.21.0/pg_ext.so - Could not load 'active_record/connection_adapters/postgresql_adapter'. Make sure that the adapter in config/database.yml is valid. If you use an adapter other than 'mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile. (LoadError)
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/pg-0.21.0/lib/pg.rb:4:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:17:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/connection_specification.rb:175:in `spec'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_handling.rb:50:in `establish_connection'
from /var/task/lib/app/app.rb:12:in `<main>'
2017-07-03T15:38:42.676Z a9e88496-6005-11e7-924c-e7c37f2df3e0 {"errorMessage":"Process \"./app\" exited with code: 1"}
END RequestId: a9e88496-6005-11e7-924c-e7c37f2df3e0
真正的原因也隐藏在这个错误的背后。并不是找不到 pg_ext.so，因为它就在这条路径中。
经过更多研究，最后一个问题是 libpg.so.5 本身就是缺失的，为了解决这个问题，我必须将它添加到 Traveling Ruby 的库路径中。
希望以后能对别人有所帮助！