connect() 到 unix:/var/run/unicorn.sock 在连接到上游时失败（111：连接被拒绝）答案

【问题标题】：connect() to unix:/var/run/unicorn.sock failed (111: Connection refused) while connecting to upstreamconnect() 到 unix:/var/run/unicorn.sock 在连接到上游时失败（111：连接被拒绝）
【发布时间】：2017-07-17 20:54:48
【问题描述】：

我遵循 ruby on rails 一键式部署。数据库做得很好，即使我检查 rails 控制台一切正常

017/02/26 15:34:17 [error] 18564#0: *31 connect() to unix:/var/run/unicorn.sock failed (111: Connection refused) while connecting to upstream, client: 121.52.156.57, server: _, request: "GET / HTTP/1.1", upstream: "http://unix:/var/run/unicorn.sock:/", host: "188.166.157.124"
2017/02/26 15:35:42 [error] 32360#0: *1 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 119.155.34.115, server: _, request: "GET / HTTP/1.1", upstream: "http://unix:/var/run/unicorn.sock/", host: "188.166.157.124"
2017/02/26 15:42:38 [error] 6296#0: *1 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 119.152.140.90, server: _, request: "GET / HTTP/1.1", upstream: "http://unix:/var/run/unicorn.sock/", host: "188.166.157.124"

uncorn.conf 是

listen "unix:/var/run/unicorn.sock"
worker_processes 4
user "rails"
working_directory "/home/rails/company_startup"
pid "/var/run/unicorn.pid"
stderr_path "/var/log/unicorn/unicorn.log"
stdout_path "/var/log/unicorn/unicorn.log"

nginx 是

upstream app_server {
server unix:/var/run/unicorn.sock fail_timeout=0;
}

server {
listen   80;
root /home/rails/nehbor-webserver/public;
server_name _;
index index.htm index.html;
client_max_body_size 1M;
location / {
        try_files $uri/index.html $uri.html $uri @app;
}

location ~* ^.+\.(jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|pdf|ppt|txt|tar|mid|midi|wav|bmp|rtf|mp3|flv|mpeg|avi)$ {
                try_files $uri @app;
        }

 location @app {
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_redirect off;
        proxy_pass http://app_server;
}
}

【问题讨论】：

标签： ruby-on-rails ruby nginx digital-ocean unicorn

【解决方案1】：

根据unicorn documentation，我觉得你应该把配置中listen方法中的unix部分去掉，改成listen "/var/run/unicorn.sock"。

listen 3000 # listen to port 3000 on all TCP interfaces
listen "127.0.0.1:3000"  # listen to port 3000 on the loopback interface
listen "/path/to/.unicorn.sock" # listen on the given Unix domain socket
listen "[::1]:3000" # listen to port 3000 on the IPv6 loopback interface

【讨论】：

检查这个nginx.org/en/docs/http/ngx_http_upstream_module.html，上面写着要添加unix

【解决方案2】：

简而言之，nginx 正在尝试重定向到您的应用程序，但它不能。除了基本的配置和结构之外，我认为最常见的问题与：

端口
套接字
对我来说（使用 aws ec2），我使用的域是通过我的 dns 注册器上的 cname 记录链接的。 ip改变了，改变了域服务器名称，我的记录没有更新。我只是将它从 cname 记录名称更改为我的新弹性域名。

【讨论】：