debugging502错误的网关错误 – Ubuntu，Nginx，Unicorn

我有一个EC2实例，试图运行与Nginx和独angular兽的Rails应用程序。

大约60秒后，我不断收到502错误的网关错误：

这是我在nginx错误日志中得到的：

2017/02/10 18:03:38 [error] 13208＃13208：* 1上游过早closures连接，同时从上游读取响应头，客户端：174.25.146.24，服务器：_，请求：“GET / welcome HTTP / 1.1” ，上游：“ http：// unix：/home/rails/myapp/shared/sockets/unicorn.sock：/ welcome ”，主机：“mydomain.com”

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unicorn.stderr.log

E，[2017-02-13T00：58：12.456504＃13149] ERROR – ：worker = 0 PID：16535 timeout（31s> 30s），E，[2017-02-13T00：58：12.459388＃13149] – ：收割＃工人= 0我，[2017-02-13T00：58：12.459499＃13149]信息 – ：工人= 0产卵…我，[2017-02-13T00：58：12.461390＃16810]信息 – – ：worker = 0派生pid = 16810我，[2017-02-13T00：58：12.461829＃16810]信息 – ：工人= 0准备

nginx.conf

user rails; worker_processes auto; pid /run/nginx.pid; events { worker_connections 1024; # multi_accept on; } http { ## # Basic Settings ## sendfile on; tcp_nopush on; tcp_nodelay on; keepalive_timeout 65; types_hash_max_size 2048; # server_tokens off; # server_names_hash_bucket_size 64; # server_name_in_redirect off; include /etc/nginx/mime.types; default_type application/octet-stream; ## # SSL Settings ## ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE ssl_prefer_server_ciphers on; ## # Logging Settings ## access_log /var/log/nginx/access.log; error_log /var/log/nginx/error.log; ## # Gzip Settings ## gzip on; gzip_disable "msie6"; # gzip_vary on; # gzip_proxied any; # gzip_comp_level 6; # gzip_buffers 16 8k; # gzip_http_version 1.1; # gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript; # upstream unicorn { # server unix:/home/rails/myapp/shared/sockets/unicorn.sock fail_timeout=0; # } ## # Virtual Host Configs ## include /etc/nginx/conf.d/*.conf; include /etc/nginx/sites-enabled/*; } 

unicorn.rb

 # set path to application app_dir = File.expand_path("../..", __FILE__) shared_dir = "#{app_dir}" working_directory app_dir print shared_dir # Set unicorn options worker_processes 2 preload_app true timeout 30 print '1' # Set up socket location listen "#{shared_dir}/shared/sockets/unicorn.sock", :backlog => 64 print '2' # Logging stderr_path "#{shared_dir}/shared/log/unicorn.stderr.log" stdout_path "#{shared_dir}/shared/log/unicorn.stdout.log" print '3' # Set master PID location pid "#{shared_dir}/shared/pids/unicorn.pid" print '4' 

网站可用/默认

 upstream app { # Path to Unicorn SOCK file, as defined previously server unix:/home/rails/myapp/shared/sockets/unicorn.sock fail_timeout=0; } server { listen 80; server_name _; root /home/rails/myapp/public; try_files $uri/index.html $uri @app; location @app { proxy_pass http://app; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; } error_page 500 502 503 504 /500.html; client_max_body_size 4G; keepalive_timeout 10; } 

在套接字上的权限：

 srwxrwxrwx 1 rails rails 0 Feb 10 18:00 unicorn.sock 

任何想法如何我可以跟踪这个呢？