带有 Unicorn 和 Sinatra 的 nginx 服务器不记录崩溃答案

【问题标题】：nginx server with Unicorn and Sinatra not logging crashes带有 Unicorn 和 Sinatra 的 nginx 服务器不记录崩溃
【发布时间】：2017-01-14 15:23:15
【问题描述】：

我有一个使用 Ruby、Sinatra、Unicorn 和 nginx 的服务器。我最近遇到了崩溃，在终端中运行时重新产生了这个问题，我可以看到它产生了这个崩溃日志：

/Users/Andrew/.rvm/gems/ruby-2.3.0/gems/tweetstream-2.6.1/lib/tweetstream/client.rb:449:in `block in connect': Failed to reconnect after 6 tries. (TweetStream::ReconnectError)
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/em-twitter-0.3.5/lib/em-twitter/connection.rb:297:in `invoke_callback'
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/em-twitter-0.3.5/lib/em-twitter/connection.rb:269:in `rescue in schedule_reconnect'
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/em-twitter-0.3.5/lib/em-twitter/connection.rb:264:in `schedule_reconnect'
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/em-twitter-0.3.5/lib/em-twitter/connection.rb:92:in `unbind'
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/eventmachine-1.2.0.1/lib/eventmachine.rb:1483:in `event_callback'
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/eventmachine-1.2.0.1/lib/eventmachine.rb:194:in `run_machine'
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/eventmachine-1.2.0.1/lib/eventmachine.rb:194:in `run'
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/thin-1.7.0/lib/thin/backends/base.rb:73:in `start'
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/thin-1.7.0/lib/thin/server.rb:162:in `start'
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/handler/thin.rb:19:in `run'
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1506:in `start_server'
    from /Users/Andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1444:in `run!'
    from server.rb:234:in `<main>'

但是我之前在找错误日志的时候，找不到像上面这样的东西。

我的 /etc/nginx/nginx.conf 文件将其显示为日志的位置：

    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;

但是我去了这两个目录，访问日志只显示所有请求，正如我所期望的那样，错误日志是空的。

如果我的日志存储在其他地方，我如何确定它在哪里？或者如果由于某种原因没有记录崩溃，我如何确保它是？

【问题讨论】：

标签： ruby nginx server sinatra unicorn

【解决方案1】：

我建议您在unicorn.rb 文件中为独角兽设置stderr 和stdout 日志。

# set path to app that will be used to configure unicorn,
# note the trailing slash in this example
@dir = File.dirname(__FILE__) + '/'

worker_processes 2
working_directory @dir

timeout 30

# Specify path to socket unicorn listens to,
# we will use this in our nginx.conf later
listen "/home/vagrant/sockets/unicorn.sock", :backlog => 64

# Set process id path
pid "#{@dir}tmp/pids/unicorn.pid"

# Set log file paths
stderr_path "/var/log/unicorn/stderr.log"
stdout_path "/var/log/unicorn/stdout.log"

【讨论】：