Cuttlefish SMTP 进程在邮件发送测试时崩溃

Question

我正在像这样启动 Cuttlefish (https://cuttlefish.io/) SMTP 进程：

bundle exec rake cuttlefish:smtp RAILS_ENV=production

但是当我尝试通过 Cuttlefish 的网络发送测试邮件时，此过程崩溃并显示最后一条消息：

Redis::CannotConnectError: Error connecting to Redis on 127.0.0.1:6379 (ECONNREFUSED)

我错过了什么？ Cuttlefish 连接到 MySQL 数据库，这似乎没问题。另外，我在同一台机器上安装了 Postfix，也已测试 OK。如何使这个 SMTP 进程工作？

这是完整的崩溃堆栈：

I'm listening for emails via SMTP on 0.0.0.0 port 2525
I'm in the production environment
rake aborted!
Redis::CannotConnectError: Error connecting to Redis on 127.0.0.1:6379 (ECONNREFUSED)
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:320:in `rescue in establish_connection'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:311:in `establish_connection'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:91:in `block in connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:273:in `with_reconnect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:90:in `connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:337:in `ensure_connected'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:204:in `block in process'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:286:in `logging'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:203:in `process'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:174:in `call_pipelined'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:146:in `block in call_pipeline'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:273:in `with_reconnect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:144:in `call_pipeline'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:2147:in `block in multi'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:37:in `block in synchronize'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:37:in `synchronize'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:2139:in `multi'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/client.rb:180:in `block in raw_push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/connection_pool-2.1.0/lib/connection_pool.rb:58:in `with'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/client.rb:179:in `raw_push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/client.rb:68:in `push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/worker.rb:85:in `client_push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/worker.rb:40:in `perform_async'
/soft/wordpress/home/tupromail/cuttlefish-master/lib/cuttlefish_smtp_server.rb:117:in `receive_message'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/em/protocols/smtpserver.rb:539:in `process_data_line'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/em/protocols/smtpserver.rb:196:in `receive_line'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/em/protocols/linetext2.rb:64:in `receive_data'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run_machine'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run'
/soft/wordpress/home/tupromail/cuttlefish-master/lib/cuttlefish_control.rb:22:in `smtp_start'
/soft/wordpress/home/tupromail/cuttlefish-master/lib/tasks/cuttlefish.rake:6:in `block (2 levels) in <top (required)>'
/soft/wordpress/home/tupromail/.gem/ruby/gems/rake-11.3.0/exe/rake:27:in `<top (required)>'
Errno::ECONNREFUSED: Connection refused - connect(2) for 127.0.0.1:6379
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:129:in `rescue in connect_addrinfo'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:121:in `connect_addrinfo'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:162:in `block in connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:160:in `each'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:160:in `each_with_index'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:160:in `connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:211:in `connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:316:in `establish_connection'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:91:in `block in connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:273:in `with_reconnect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:90:in `connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:337:in `ensure_connected'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:204:in `block in process'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:286:in `logging'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:203:in `process'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:174:in `call_pipelined'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:146:in `block in call_pipeline'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:273:in `with_reconnect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:144:in `call_pipeline'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:2147:in `block in multi'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:37:in `block in synchronize'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:37:in `synchronize'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:2139:in `multi'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/client.rb:180:in `block in raw_push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/connection_pool-2.1.0/lib/connection_pool.rb:58:in `with'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/client.rb:179:in `raw_push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/client.rb:68:in `push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/worker.rb:85:in `client_push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/worker.rb:40:in `perform_async'
/soft/wordpress/home/tupromail/cuttlefish-master/lib/cuttlefish_smtp_server.rb:117:in `receive_message'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/em/protocols/smtpserver.rb:539:in `process_data_line'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/em/protocols/smtpserver.rb:196:in `receive_line'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/em/protocols/linetext2.rb:64:in `receive_data'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run_machine'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run'
/soft/wordpress/home/tupromail/cuttlefish-master/lib/cuttlefish_control.rb:22:in `smtp_start'
/soft/wordpress/home/tupromail/cuttlefish-master/lib/tasks/cuttlefish.rake:6:in `block (2 levels) in <top (required)>'
/soft/wordpress/home/tupromail/.gem/ruby/gems/rake-11.3.0/exe/rake:27:in `<top (required)>'
IO::EINPROGRESSWaitWritable: Operation now in progress - connect(2) would block
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:122:in `connect_addrinfo'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:162:in `block in connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:160:in `each'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:160:in `each_with_index'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:160:in `connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/connection/ruby.rb:211:in `connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:316:in `establish_connection'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:91:in `block in connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:273:in `with_reconnect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:90:in `connect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:337:in `ensure_connected'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:204:in `block in process'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:286:in `logging'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:203:in `process'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:174:in `call_pipelined'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:146:in `block in call_pipeline'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:273:in `with_reconnect'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis/client.rb:144:in `call_pipeline'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:2147:in `block in multi'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:37:in `block in synchronize'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:37:in `synchronize'
/soft/wordpress/home/tupromail/.gem/ruby/gems/redis-3.2.0/lib/redis.rb:2139:in `multi'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/client.rb:180:in `block in raw_push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/connection_pool-2.1.0/lib/connection_pool.rb:58:in `with'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/client.rb:179:in `raw_push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/client.rb:68:in `push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/worker.rb:85:in `client_push'
/soft/wordpress/home/tupromail/.gem/ruby/gems/sidekiq-3.3.0/lib/sidekiq/worker.rb:40:in `perform_async'
/soft/wordpress/home/tupromail/cuttlefish-master/lib/cuttlefish_smtp_server.rb:117:in `receive_message'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/em/protocols/smtpserver.rb:539:in `process_data_line'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/em/protocols/smtpserver.rb:196:in `receive_line'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/em/protocols/linetext2.rb:64:in `receive_data'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run_machine'
/soft/wordpress/home/tupromail/.gem/ruby/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run'
/soft/wordpress/home/tupromail/cuttlefish-master/lib/cuttlefish_control.rb:22:in `smtp_start'
/soft/wordpress/home/tupromail/cuttlefish-master/lib/tasks/cuttlefish.rake:6:in `block (2 levels) in <top (required)>'
/soft/wordpress/home/tupromail/.gem/ruby/gems/rake-11.3.0/exe/rake:27:in `<top (required)>'
Tasks: TOP => cuttlefish:smtp

Answer 1

您的应用由于 redis 连接而失败，请检查您是否在某些模块中使用 redis 并安装 redis 或删除 redis 依赖项

Answer 2

我通过启动 Redis 服务器解决了这个问题：

redis-server&