Sidekiq无法启动（获得SIGHUP）

Question

我有一个Rails 5 API与Sidekiq和capistrano-sidekiq，在过去几个月一直很高兴地工作。

有一天，Sidekiq停止了处理工作。检查日志，我看到了

bundler: failed to load command: sidekiq (/home/user/project/shared/bundle/ruby/2.2.0/bin/sidekiq) 
SignalException: SIGHUP 
/home/user/project/shared/bundle/ruby/2.2.0/gems/activesupport-5.0.0.1/lib/active_support/core_ext/module/attribute_accessors.rb:119:in `<class:Module>' 
/home/user/project/shared/bundle/ruby/2.2.0/gems/activesupport-5.0.0.1/lib/active_support/core_ext/module/attribute_accessors.rb:6:in `<top (required)>' 
... (snip) 

每当我尝试启动Sidekiq时，上面都会出现在日志中。它使用安静命令（USR1）关闭并正确退出。

INFO: Received USR1, no longer accepting new work 

我正在使用Capistrano进行部署，它一直运行良好，直到发生这种情况。这是Capistrano用来启动Sidekiq的命令：

INFO [2aac3b89] Running $HOME/.rbenv/bin/rbenv exec bundle exec sidekiq --index 0 --pidfile /home/user/project/shared/tmp/pids/sidekiq-0.pid --environment production --logfile /home/user/project/shared/log/sidekiq.log --daemon as user@xxx.xxx.xxx.xxx 
DEBUG [2aac3b89] Command: cd /home/user/project/current && (export RBENV_ROOT="$HOME/.rbenv" RBENV_VERSION="2.2.3" ; $HOME/.rbenv/bin/rbenv exec bundle exec sidekiq --index 0 --pidfile /home/user/project/shared/tmp/pids/sidekiq-0.pid --environment production --logfile /home/user/project/shared/log/sidekiq.log --daemon) 
INFO [2aac3b89] Finished in 1.176 seconds with exit status 0 (successful). 

这是怎么回事？我怎样才能确保它未来不会发生？

Answer 1

在capistrano，我有:pty设置为true。我想这是在它有机会启动之前杀死这个过程。我仍然不确定现在为什么这是一个问题，但设置:pty到false似乎已经做到了。