我正在将一个Rails应用程序部署到数字海洋VPS。 我已经按照https://coderwall.com/p/yz8cha 。 所有的事情都做得很好，但是现在浏览器只显示一个空白页面。
Nginx的日志包含：
2014/08/04 03:07:20 [crit] 20550#0: *4 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connectin$ 2014/08/04 03:08:39 [crit] 20550#0: *11 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connecti$ 2014/08/04 03:08:40 [crit] 20550#0: *11 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connecti$ 2014/08/04 03:08:41 [crit] 20550#0: *11 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connecti$ 2014/08/04 03:08:41 [crit] 20550#0: *11 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connecti$ 2014/08/04 03:08:42 [crit] 20550#0: *11 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connecti$ 2014/08/04 03:08:42 [crit] 20550#0: *14 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connecti$ 2014/08/04 03:08:42 [crit] 20550#0: *19 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connecti$ 2014/08/04 04:15:01 [error] 22883#0: *19 connect() failed (111: Connection refused) while connecting to upstream, client: 202.88.237.208, serv$ 2014/08/04 04:40:46 [error] 29378#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 202.88.237.208, serve$ 2014/08/04 04:45:22 [error] 29378#0: *10 connect() failed (111: Connection refused) while connecting to upstream, client: 202.88.237.208, serv$ 2014/08/04 04:49:48 [crit] 31073#0: *1 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connectin$ 2014/08/04 04:58:19 [crit] 31073#0: *4 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connectin$ 2014/08/04 04:58:38 [crit] 31073#0: *7 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connectin$ 2014/08/04 04:59:45 [crit] 32683#0: *1 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connectin$ 2014/08/04 05:00:28 [crit] 32683#0: *4 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connectin$ 2014/08/04 05:00:29 [crit] 32683#0: *4 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connectin$ 2014/08/04 05:08:15 [crit] 32683#0: *8 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connectin$ 2014/08/04 05:09:50 [crit] 32683#0: *11 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connecti$ 2014/08/04 05:30:02 [crit] 32683#0: *14 connect() to unix:/var/run/unicorn.testvpsdo.sock failed (2: No such file or directory) while connecti$ 我已经改变了目录，现在错误显示：
2014/08/04 05:34:18 [emerg] 1985#0: invalid host in upstream "/tmp/unicorn.testvpsdo.sock" in /etc/nginx/sites-enabled/testvpsdo:2 2014/08/04 05:36:35 [emerg] 2459#0: invalid host in upstream "/tmp/unicorn.testvpsdo.sock" in /etc/nginx/sites-enabled/testvpsdo:2
Nginxconfiguration：
upstream unicorn { server unix:/tmp/unicorn.testvpsdo.sock fail_timeout=0; } server { listen 80 default_server deferred; # server_name example.com; root /home/navin/apps/testvpsdo/current/public; location ^~ /assets/ { gzip_static on; expires max; add_header Cache-Control public; } try_files $uri/index.html $uri @unicorn; location @unicorn { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; proxy_pass http://unicorn; } error_page 500 502 503 504 /500.html; client_max_body_size 20M; keepalive_timeout 10; }
即使我通过很多网站search，我也不知道如何解决这个问题。
由于权限，nginx无法访问您的套接字文件。 尝试一下：
sudo mkdir /var/sockets sudo chmod -R 755 /var/sockets sudo mv /tmp/unicorn.testvpsdo.sock /var/sockets/unicorn.testvpsdo.sock
然后在nginx.conf和unicorn.rb文件中指定新的套接字目录。 重新部署，看看会发生什么。