Rails + Nginx + Unicorn -部署时不创建unicorn.sock文件

Question

我得到了一个“我们很抱歉，但有些地方出了问题”的屏幕试图部署。它以前运行良好，但是当我试图更新它时，我遇到了这个问题。这是我第一次部署任何东西，我仍然不确定我在做什么，所以我真的很感激对我所做的错误的一些输入。

我从unicorn.log获得以下错误

I, [2018-10-01T19:54:53.470419 #4905]  INFO -- : unlinking existing
socket=/home/deploy/production/appName/tmp/sockets
/bcrypt_unicorn.todo.sock
I, [2018-10-01T19:54:53.470635 #4905]  INFO -- : listening on addr=/home/deploy/production/appName/tmp/sockets/bcrypt_unicorn.todo.sock fd=10
I, [2018-10-01T19:54:53.470737 #4905]  INFO -- : worker=0 spawning...
I, [2018-10-01T19:54:53.471045 #4905]  INFO -- : worker=1 spawning...
I, [2018-10-01T19:54:53.471397 #4905]  INFO -- : master process ready
I, [2018-10-01T19:54:53.476589 #4908]  INFO -- : worker=0 spawned pid=4908
I, [2018-10-01T19:54:53.476714 #4908]  INFO -- : Refreshing Gem list
I, [2018-10-01T19:54:53.477787 #4910]  INFO -- : worker=1 spawned pid=4910
I, [2018-10-01T19:54:53.477910 #4910]  INFO -- : Refreshing Gem list
I, [2018-10-01T19:54:59.740522 #4908]  INFO -- : worker=0 ready
I, [2018-10-01T19:54:59.744825 #4910]  INFO -- : worker=1 ready

以及来自/var/log/nginx/error.log的以下错误

2018/10/01 20:00:41 [crit] 5067#5067: *2 connect() to unix:/home/deploy
/production/appName/tmp/sockets/bcrypto_unicorn.todo.sock failed
(2: No such file or directory) while connecting to upstream, client:
77.75.77.32, server: , request: "GET /genres/gaming HTTP/1.1", upstream:
"http://unix:/home/deploy/production/appName/tmp/sockets
/bcrypto_unicorn.todo.sock:/genres/gaming", host: "appName.com"

我重新启动Nginx

sudo service nginx restart

重新加载更新的配置

sudo nginx -s reload

然后停止运行Unicorn进程。

ps aux | grep "unicorn master"
kill -9 PID

然后提取更新的代码以进行部署。

git status
git stash save -u quick-fix
git pull origin master
git stash apply

然后迁移到db。

RAILS_ENV=production rake db:migrate
RAILS_ENV=production rake assets:precompile

最后重新启动了Unicorn

bundle exec unicorn -E production -c config/unicorn.rb -D

我的unicorn.rb文件如下：

app_path = "/home/deploy/production/appName"
working_directory app_path
pid app_path + "/tmp/pids/unicorn.pid"
stderr_path app_path + "/log/unicorn.log"
stdout_path app_path + "/log/production.log"
listen app_path + '/tmp/sockets/bcrypt_unicorn.todo.sock'
worker_processes 2
timeout 65

appName/config/nginx.conf

upstream unicorn {
  server unix:/tmp/sockets/bcrypto_unicorn.todo.sock fail_timeout=0;
}

server{
  listen 80 default deferred;
  root /home/deploy/production/appName/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 403 404 /404.html;

  error_page 500 502 503 504 /500.html;

  client_max_body_size 4G;
  keepalive_timeout 10;
}

和/etc/nginx/nginx.conf

user www-data;
worker_processes auto;
pid /run/nginx.pid;

events {
    worker_connections 768;
    # multi_accept on;
}

http {
    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 applicati$

    ##
    # Virtual Host Configs
    ##

    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*;
}

/etc/nginx/sites-enabled/bcrypto

upstream bcrypto_unicorn {
    server unix:/home/deploy/production/appName/tmp/sockets/bcrypto_unicorn.todo.sock fa$
}

server {
    listen 80 default deferred;
    root /home/deploy/production/appName/public;

    location ^~ /assets/ {
        gzip_static on;
        expires max;
        add_header Cache-Control public;
    }

    try_files $uri/index.html $uri @bcrypto_unicorn;

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

    error_page 422 500 502 503 504 /500.html;
    client_max_body_size 4G;
    keepalive_timeout 60;
}

有人能告诉我我在这里做的不对吗？

Answer 1

问题是，Nginx在Unicorn设置的不同地方寻找套接字。

当Unicorn配置将套接字设置为/home/deploy/production/appName/tmp/sockets/byc2-master_unicorn.todo.sock时，Nginx正在尝试在：/tmp/appName_unicorn.todo.sock中查找套接字。

要解决这个问题，这两条路必须是相同的。因此，您需要在/etc/nginx/sites-enabled/bcrypto的上游指令中放置相同的路径，在unicorn.rb中放置由listen指令定义的路径。

然后重新启动Unicorn并重新加载Nginx

Answer 2

首先，检查您的tmp/sockets文件夹，看看它是否存在。如果没有，请使用以下命令创建文件夹

mkdir /home/deploy/production/appName/tmp/sockets

然后，通过修改socket将unicorn.rb更改为与nginx相同的路径。

listen app_path + '/tmp/sockets/bcrypt_unicorn.todo.sock'

最后，重启独角兽

bundle exec unicorn -E production -c config/unicorn.rb -D